7Baggers

Alaska Air Group, Inc
(NYSE:ALK) 

ALK stock logo

Alaska Air Group, Inc., through its subsidiaries, provides passenger and cargo air transportation services. The company operates through three segments: Mainline, Regional, and Horizon. It flies to approximately 115 destinations throughout the United States and North America. The company was founded...

Founded: 1932
Full Time Employees: 18,112
Sector: Industrials
Industry: Airlines

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Quarterly
Annual
    Unit: USD2025-12-31 2025-09-30 2025-06-30 2024-12-31 2024-09-30 2024-06-30 2023-12-31 2023-09-30 2023-06-30 2022-12-31 2022-09-30 2022-06-30 2021-12-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2013-03-31 2010-03-31 2009-08-06 2009-05-08 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 
                                                 
      operating revenue
                                                 
      passenger revenue
    3,248,000,000 3,424,000,000 3,355,000,000 3,178,000,000 2,821,000,000 2,651,000,000 2,326,000,000 2,618,000,000 2,598,000,000 2,264,000,000 2,615,000,000 2,418,000,000  657,000,000 572,000,000 309,000,000 1,481,000,000 2,057,000,000 2,211,000,000 2,111,000,000 1,716,000,000 1,907,000,000 2,043,000,000 1,997,000,000                      
      loyalty program other revenue
    238,000,000 200,000,000 210,000,000 224,000,000 171,000,000                                         
      cargo and other revenue
    146,000,000 142,000,000 139,000,000 132,000,000 80,000,000 72,000,000 62,000,000 62,000,000 70,000,000                                     
      total operating revenue
    3,632,000,000 3,766,000,000 3,704,000,000 3,534,000,000 3,072,000,000 2,897,000,000 2,553,000,000 2,839,000,000 2,838,000,000                                     
      operating expenses
                                                 
      wages and benefits
    1,245,000,000 1,226,000,000 1,165,000,000 1,119,000,000 883,000,000 782,000,000 782,000,000 782,000,000 754,000,000 709,000,000 686,000,000 639,000,000  474,000,000 495,000,000 472,000,000 612,000,000 638,000,000 608,000,000 567,000,000 557,000,000 561,000,000 549,000,000 544,000,000 264,000,000 239,300,000 247,100,000 246,000,000 232,500,000 232,100,000 234,400,000 242,400,000 243,200,000 241,100,000 236,600,000 237,000,000 240,800,000 238,600,000 234,400,000 223,200,000 230,100,000 221,500,000 227,300,000 244,700,000  
      variable incentive pay
    74,000,000 71,000,000 61,000,000 161,000,000 104,000,000 49,000,000 51,000,000 45,000,000 57,000,000 117,000,000 48,000,000 56,000,000  65,000,000 42,000,000 16,000,000 7,000,000 38,000,000 46,000,000 44,000,000 35,000,000 43,000,000 27,000,000 38,000,000 21,000,000 17,900,000 18,900,000 9,300,000 6,400,000 6,300,000 5,100,000 3,600,000 3,600,000 2,900,000 3,800,000 10,500,000 12,700,000 5,000,000 10,600,000 8,500,000      
      aircraft fuel, including hedging gains and losses
    737,000,000 761,000,000 700,000,000 702,000,000 624,000,000 615,000,000 709,000,000 694,000,000 573,000,000 668,000,000 877,000,000 776,000,000  155,000,000 125,000,000 59,000,000 384,000,000 470,000,000 486,000,000 502,000,000 420,000,000 539,000,000 513,000,000 475,000,000 381,000,000 207,300,000 128,400,000 157,700,000 358,800,000 575,600,000 182,000,000 282,000,000 220,500,000 243,100,000 227,800,000 184,900,000 219,800,000 290,800,000 199,800,000 163,100,000      
      aircraft maintenance
    214,000,000 238,000,000 240,000,000 229,000,000 140,000,000 129,000,000 121,000,000 118,000,000 125,000,000 93,000,000 92,000,000 104,000,000  77,000,000 84,000,000 45,000,000 115,000,000 96,000,000 106,000,000 115,000,000 120,000,000 115,000,000 107,000,000 106,000,000 66,000,000 57,000,000 59,600,000 59,700,000 49,200,000 47,400,000 54,200,000 58,000,000 65,100,000 59,200,000 59,000,000 58,500,000 62,100,000 49,600,000 57,800,000 61,200,000 53,900,000 55,200,000 58,200,000 61,200,000  
      aircraft rent
    60,000,000 64,000,000 64,000,000 65,000,000 49,000,000 46,000,000 47,000,000 48,000,000 54,000,000 69,000,000 76,000,000 73,000,000  70,000,000 74,000,000 74,000,000 81,000,000 84,000,000 82,000,000 82,000,000 83,000,000 82,000,000 82,000,000 77,000,000 30,000,000 37,000,000 39,100,000 38,000,000 37,000,000 40,200,000 42,300,000 43,600,000 45,200,000 45,200,000 44,700,000 43,300,000 43,600,000 43,900,000 46,100,000 46,600,000 47,000,000 46,900,000 47,000,000 46,100,000  
      landing fees and other rentals
    284,000,000 305,000,000 278,000,000 249,000,000 194,000,000 173,000,000 178,000,000 183,000,000 167,000,000 146,000,000 161,000,000 136,000,000  94,000,000 109,000,000 83,000,000 131,000,000 143,000,000 143,000,000 113,000,000 132,000,000 128,000,000 135,000,000 110,000,000 60,000,000 55,900,000 54,400,000 54,200,000 54,000,000 56,800,000 56,900,000 56,000,000 56,700,000 58,100,000 56,500,000 54,700,000 51,600,000 52,900,000 52,000,000 49,000,000 51,900,000 52,400,000 51,900,000 52,200,000  
      contracted services
    148,000,000 151,000,000 146,000,000 133,000,000 108,000,000 106,000,000 99,000,000 100,000,000 95,000,000 86,000,000 83,000,000 82,000,000  43,000,000 36,000,000 30,000,000 72,000,000 75,000,000 72,000,000 70,000,000 72,000,000 79,000,000 70,000,000 76,000,000 53,000,000 39,600,000 36,800,000 38,400,000 37,800,000 40,200,000 43,600,000 44,500,000 41,800,000 40,400,000 39,800,000 38,600,000 38,900,000 37,600,000 39,600,000 36,700,000 36,200,000 30,800,000 34,800,000 30,600,000  
      selling expenses
    95,000,000 107,000,000 105,000,000 106,000,000 82,000,000 84,000,000 72,000,000 84,000,000 81,000,000 77,000,000 82,000,000 78,000,000  20,750,000 24,000,000 4,000,000 55,000,000 59,000,000 77,000,000 87,000,000 72,000,000 61,250,000 79,000,000 88,000,000 38,000,000 33,600,000 35,300,000 25,000,000 26,800,000 41,700,000 44,100,000 34,500,000 37,700,000 42,700,000 41,100,000 39,000,000 36,700,000 44,700,000 46,400,000 40,000,000 38,200,000 44,300,000    
      depreciation and amortization
    199,000,000 203,000,000 199,000,000 190,000,000 139,000,000 128,000,000 121,000,000 113,000,000 113,000,000 105,000,000 104,000,000 104,000,000  100,000,000 105,000,000 107,000,000 108,000,000 106,000,000 106,000,000 105,000,000 106,000,000 108,000,000 99,000,000 97,000,000 69,000,000 56,200,000 53,900,000 52,800,000 51,700,000 52,100,000 51,500,000 49,300,000 45,100,000 46,600,000 43,800,000 41,900,000 43,400,000 40,500,000 36,700,000 36,900,000 37,600,000 36,300,000 35,300,000 34,200,000  
      food and beverage service
    101,000,000 100,000,000 97,000,000 93,000,000 69,000,000 67,000,000 65,000,000 62,000,000 60,000,000 54,000,000 52,000,000 50,000,000  20,000,000 14,000,000 7,000,000 49,000,000 55,000,000 57,000,000 53,000,000 49,000,000 53,000,000 53,000,000 55,000,000 20,000,000 12,300,000 12,400,000 11,600,000 11,700,000 13,500,000 13,400,000 12,300,000 12,800,000 12,900,000 12,800,000 11,200,000 12,900,000 13,500,000 12,500,000 11,500,000 13,100,000 13,500,000 12,100,000 11,500,000  
      third-party regional carrier expense
    67,000,000 72,000,000 69,000,000 62,000,000 63,000,000 64,000,000 54,000,000 58,000,000 54,000,000 37,000,000 53,000,000 50,000,000  36,000,000 29,000,000 26,000,000 37,000,000 41,000,000 42,000,000 42,000,000 41,000,000 40,000,000 38,000,000 39,000,000                      
      other
    294,000,000 256,000,000 247,000,000 261,000,000 202,000,000 186,000,000 185,000,000 185,000,000 182,000,000 181,000,000 207,000,000 177,000,000  97,000,000 89,000,000 78,000,000 143,000,000 148,000,000 137,000,000 136,000,000 138,000,000 149,000,000 141,000,000 141,000,000 67,000,000 47,800,000 50,300,000 56,800,000 51,500,000 52,700,000 61,500,000 57,200,000 62,800,000 55,700,000 57,100,000 54,900,000 53,600,000 55,600,000 53,200,000 52,800,000 51,900,000 51,900,000 53,100,000 51,400,000  
      special items - operating
    39,000,000 64,000,000 56,000,000 91,000,000 74,000,000 146,000,000                                        
      total operating expenses
    3,557,000,000 3,618,000,000 3,427,000,000 3,461,000,000 2,731,000,000 2,575,000,000 2,521,000,000 2,628,000,000 2,501,000,000 2,456,000,000 2,766,000,000 2,471,000,000  1,403,000,000 1,272,000,000 709,000,000 1,957,000,000 1,976,000,000 1,967,000,000 1,924,000,000 1,851,000,000 2,018,000,000 1,915,000,000 1,885,000,000 1,069,000,000 803,900,000 777,200,000 754,300,000 933,800,000 1,185,200,000 824,300,000 889,200,000 838,000,000 851,800,000 826,700,000 777,500,000 808,500,000 959,700,000 792,900,000 860,600,000 756,400,000 755,500,000 747,400,000 723,400,000  
      operating income
    75,000,000 148,000,000 277,000,000 73,000,000 341,000,000 322,000,000 32,000,000 211,000,000 337,000,000 23,000,000 62,000,000 187,000,000  -595,000,000 -571,000,000 -288,000,000 -321,000,000 252,000,000 422,000,000 364,000,000 25,000,000 46,000,000 297,000,000 271,000,000 64,000,000 26,000,000 66,700,000 -11,900,000 -106,700,000 -120,000,000 106,500,000 -49,700,000 9,100,000 143,300,000 77,700,000  -18,200,000 -24,000,000 80,100,000 -125,200,000 -25,800,000 90,200,000 9,100,000 -80,900,000  
      yoy
    -78.01% -54.04% 765.63% -65.40% 1.19% 1300.00% -48.39% 12.83%  -103.87% -110.86% -164.93%  -336.11% -235.31% -179.12% -1384.00% 447.83% 42.09% 34.32% -60.94% 76.92% 345.28% -2377.31% -159.98% -121.67% -37.37% -76.06% -1272.53% -183.74% 37.07%  -150.00% -697.08% -3.00%  -29.46% -126.61% 780.22% 54.76%      
      qoq
    -49.32% -46.57% 279.45% -78.59% 5.90% 906.25% -84.83% -37.39% 1365.22% -62.90% -66.84%   4.20% 98.26% -10.28% -227.38% -40.28% 15.93% 1356.00% -45.65% -84.51% 9.59% 323.44% 146.15% -61.02% -660.50% -88.85% -11.08% -212.68% -314.29% -646.15% -93.65% 84.43%   -24.17% -129.96% -163.98% 385.27% -128.60% 891.21% -111.25%   
      non-operating income
                                                 
      interest income
    23,000,000 23,000,000 22,000,000 32,000,000 28,000,000 24,000,000 18,000,000 23,000,000 22,000,000 18,000,000 17,000,000 11,000,000  8,000,000 7,000,000 7,000,000 9,000,000 11,000,000 11,000,000 11,000,000 9,000,000 9,000,000 11,000,000 10,000,000 4,000,000 7,500,000 7,800,000 8,300,000 10,900,000 10,700,000 10,500,000 10,300,000 11,900,000 13,800,000 13,800,000 14,400,000 14,900,000 14,200,000 14,100,000 11,100,000 9,300,000 8,600,000 7,100,000 5,900,000  
      interest expense
    -70,000,000 -70,000,000 -66,000,000 -56,000,000 -44,000,000 -36,000,000 -31,000,000 -34,000,000 -28,000,000 -24,000,000 -31,000,000 -26,000,000  -34,000,000 -34,000,000 -17,000,000 -13,000,000 -18,000,000 -18,000,000 -20,000,000 -22,000,000 -20,000,000 -22,000,000 -25,000,000 -16,000,000 -25,600,000 -25,100,000 -26,800,000 -28,000,000 -25,900,000 -25,000,000 -23,400,000 -21,700,000 -22,800,000 -22,500,000  -20,400,000 -20,400,000 -18,100,000 -19,100,000 -17,500,000 -16,100,000 -15,300,000 -14,100,000  
      interest capitalized
    8,000,000 8,000,000 9,000,000 10,000,000 7,000,000 6,000,000 6,000,000 7,000,000 7,000,000 6,000,000 3,000,000 3,000,000  3,000,000 4,000,000 1,000,000 3,000,000 4,000,000 4,000,000 3,000,000 4,000,000 4,000,000 5,000,000 4,000,000 5,000,000 1,700,000 1,800,000 2,800,000 4,700,000 5,900,000 6,100,000 6,500,000 6,900,000 7,100,000 6,700,000 7,100,000 7,100,000 7,100,000 5,800,000 4,700,000 4,000,000 2,800,000 1,300,000 800,000  
      other - net
    -6,000,000 2,000,000 -4,000,000 -750,000 -3,000,000  -17,000,000 -6,000,000 -7,000,000 12,000,000 14,000,000 10,000,000             129,000,000 58,500,000 61,500,000 38,900,000 30,200,000 39,600,000 39,600,000 41,600,000 31,200,000 41,600,000 40,800,000 42,400,000 27,725,000 37,500,000 38,900,000 34,500,000 41,000,000 42,200,000    
      total non-operating expense
    -45,000,000 -37,000,000 -39,000,000 -7,750,000 -13,000,000 -6,000,000   -12,000,000                                     
      income before income tax
    30,000,000 111,000,000 238,000,000 79,000,000 328,000,000 316,000,000 4,000,000 193,000,000 325,000,000 35,000,000 65,000,000 185,000,000  -643,000,000 -589,000,000 -291,000,000 -317,000,000 243,000,000 416,000,000 351,000,000 6,000,000 36,000,000 284,000,000 259,000,000 59,000,000  47,700,000  -120,000,000 -133,000,000 98,200,000  49,575,000 141,100,000 75,000,000    81,100,000   146,800,000 29,700,000   
      income tax expense
    9,000,000 38,000,000 66,000,000 8,000,000 92,000,000 96,000,000 6,000,000 54,000,000 85,000,000 13,000,000 25,000,000 46,000,000  -196,000,000 -158,000,000 -77,000,000 -85,000,000 62,000,000 94,000,000 89,000,000 2,000,000 13,000,000 67,000,000 66,000,000 22,000,000 4,900,000 18,600,000  -44,800,000 -46,500,000 35,100,000  -100,000 55,300,000 28,900,000  -5,000,000 -5,500,000 25,600,000 -50,300,000 -23,300,000 56,600,000 12,300,000 7,100,000  
      net income
    21,000,000 73,000,000 172,000,000 71,000,000 236,000,000 220,000,000 -2,000,000 139,000,000 240,000,000 22,000,000 40,000,000 139,000,000  -447,000,000 -431,000,000 -214,000,000 -232,000,000 181,000,000 322,000,000 262,000,000 4,000,000 23,000,000 217,000,000 193,000,000 37,000,000 5,300,000 29,100,000 -19,200,000 -75,200,000 -86,500,000 63,100,000 -35,900,000 3,400,000 85,800,000 46,100,000  -11,600,000 -17,400,000 55,500,000 -79,100,000 -33,000,000 90,200,000 17,400,000 -80,500,000  
      yoy
    -91.10% -66.82% -8700.00% -48.92% -1.67% 900.00% -105.00% 0.00%  -104.92% -109.28% -164.95%  -346.96% -233.85% -181.68% -5900.00% 686.96% 48.39% 35.75% -89.19% 333.96% 645.70% -1105.21% -149.20% -106.13% -53.88% -46.52% -2311.76% -200.82% 36.88%  -129.31% -593.10% -16.94%  -64.85% -119.29% 218.97% -1.74%      
      qoq
    -71.23% -57.56% 142.25% -69.92% 7.27% -11100.00% -101.44% -42.08% 990.91% -45.00% -71.22%   3.71% 101.40% -7.76% -228.18% -43.79% 22.90% 6450.00% -82.61% -89.40% 12.44% 421.62% 598.11% -81.79% -251.56% -74.47% -13.06% -237.08% -275.77% -1155.88% -96.04% 86.12%   -33.33% -131.35% -170.16% 139.70% -136.59% 418.39% -121.61%   
      basic earnings per share:
    0.165 0.63 1.45 0.643 1.87 1.74 0.465 1.09 1.88 0.07 0.32 1.1  -1.78 -3.49 -1.74 -1.89 1.19 2.61 2.12 0.03 0.84 1.76 1.57 0.52 0.15 0.8  -2.07 -2.4 1.75  0.753 2.12 1.14           
      diluted earnings per share:
    0.163 0.62 1.42 0.63 1.84 1.71 0.46 1.08 1.86 0.07 0.31 1.09  -1.78 -3.49 -1.73 -1.87 1.185 2.6 2.11 0.03 0.835 1.75 1.56 0.51 0.15 0.79  -2.07 -2.4 1.74  0.743 2.11 1.13           
      weighted-average shares outstanding used for computation:
                                                 
      basic
    118.171 115.287 118.847 126.136 126.189 126.337                                        
      diluted
    119.926 117.5 120.93 128.372 128.59 128.31                                        
      special items - net non-operating
       17,000,000 -1,000,000  -4,000,000 -8,000,000 -6,000,000                                     
      mileage plan other revenue
         174,000,000 165,000,000 159,000,000 170,000,000 157,000,000 146,000,000 175,000,000  108,000,000 84,000,000 73,000,000 109,000,000 119,000,000 118,000,000 118,000,000 110,000,000 105,000,000 114,000,000 108,000,000                      
      special items - fleet transition and other
          37,000,000 156,000,000 186,000,000                                     
      special items - labor and related
                                                 
      total non-operating income
          -28,000,000 -18,000,000  12,000,000 3,000,000 -2,000,000                                  
      shares used for computation:
                                                 
      basic
           127.187 127.44 0.217 126.783 126.543  0.195 123.647 123.296 122.818 -0.051 123.28 123.418 123.291 0.014 123.224 123.268 70.431 35.667 36.354  -0.04 36.069 36.059  -0.308 40.483 40.45  0.767 39.954 38.028 33.464 0.335 27.502 27.2 27.147  
      diluted
          -0.377 129.188 128.919 -0.188 128.37 127.795  0.195 123.647 123.965 124.123 0.238 124.067 124.301 123.915 0.171 123.864 124.036 71.414 36.393 36.591  -0.04 36.069 36.255  -0.475 40.715 40.782  0.767 39.954 40.076 33.464 0.394 33.857 33.273 33.158  
      operating revenues
                                                 
      cargo and other
             47,500,000 67,000,000 65,000,000  43,000,000 45,000,000 39,000,000 46,000,000 52,000,000 60,000,000 59,000,000 50,000,000 52,000,000 55,000,000 51,000,000                      
      total operating revenues
             1,791,750,000 2,828,000,000 2,658,000,000  808,000,000 701,000,000 421,000,000 1,636,000,000 2,228,000,000 2,389,000,000 2,288,000,000 1,876,000,000 2,064,000,000 2,212,000,000 2,156,000,000 1,133,000,000 829,900,000 843,900,000 742,400,000 827,100,000 1,065,200,000 930,800,000 839,500,000 847,100,000 995,100,000 904,400,000 759,400,000 790,300,000 935,700,000 873,000,000 735,400,000 730,600,000 845,700,000 756,500,000 642,500,000  
      payroll support program grant wage offset
                 -22,000,000 -398,000,000 -362,000,000                              
      special items - fleet transition
             94,000,000 155,000,000                                   
      special items - labor ratification bonus
             22,500,000 90,000,000                                   
      special items - restructuring
                                                 
      special items - fleet transition and related charges
               146,000,000                                  
      special items - restructuring charges
                 -102,000,000 322,000,000                               
      special items - merger-related costs
                 1,000,000 1,000,000 1,000,000 3,000,000 5,000,000 5,000,000 8,000,000 26,000,000                         
      special items - impairment charges and other
                 277,000,000 121,000,000 69,000,000 160,000,000                             
      nonoperating income
                                                 
      other—net
                 4,000,000 5,000,000 6,000,000 5,000,000 -5,000,000 -3,000,000 -7,000,000 -10,000,000 -3,000,000 -7,000,000 -1,000,000                      
      total nonoperating income
                 -4,250,000 -18,000,000 -3,000,000 4,000,000 -9,500,000 -6,000,000 -13,000,000 -19,000,000 -12,000,000 -13,000,000 -12,000,000                      
      special items - other
                                                 
      special items—merger-related costs
                         16,750,000 22,000,000 39,000,000                      
      special items—other
                         6,250,000                        
      cash dividend declared per share:
                         0.24 0.32 0.32                      
      passenger
                             748,400,000 757,200,000 684,100,000 763,800,000 952,800,000 863,500,000 775,700,000 778,000,000 926,500,000 836,200,000 695,800,000 724,600,000 871,500,000 807,400,000 679,500,000 666,800,000 777,400,000 697,500,000 587,000,000  
      mainline
                            796,000,000                     
      regional
                            182,000,000                     
      total passenger revenue
                            978,000,000                     
      freight and mail
                            26,000,000 23,000,000 25,200,000 19,400,000 23,200,000 30,500,000 27,700,000 22,200,000 22,200,000 27,000,000 27,400,000 21,200,000 22,500,000 26,700,000 26,700,000 21,400,000 22,800,000 26,100,000 24,900,000 20,300,000  
      fleet transition costs - q200
                              5,200,000 4,800,000 2,425,000 700,000 3,200,000               
      income (loss) before income tax
                             10,200,000                    
      see accompanying notes to condensed consolidated financial statements.
                                                 
      new pilot contract transition costs
                              35,800,000                   
      fleet transition costs - md-80
                                11,875,000 21,500,000 26,000,000               
      fleet transition costs - crj-700
                                1,700,000 700,000 6,100,000               
      loss before income tax
                               -29,600,000    -56,100,000              
      income tax benefit
                               -10,400,000    -20,200,000              
      basic and diluted loss per share:
                               -0.53    -0.97              
      shares used for computation:
                                                 
      basic and diluted
                               36.326    37.024    40.365          
      change in mileage plan terms
                                 42,300,000                
      restructuring charges
                                9,200,000 3,700,000           -300,000 -1,400,000 14,700,000   
      fleet transition costs - horizon
                                   5,800,000 2,650,000 3,900,000 3,700,000           
      fleet transition costs - alaska
                                                 
      restructuring charges and adjustments
                                        -7,600,000 28,600,000 3,800,000       
      fleet transition costs, including impairment charge
                                       3,000,000          
      fleet transition costs
                                         58,400,000        
      income before income tax and accounting change
                                        -16,600,000 -22,900,000  -129,400,000 -56,300,000   17,000,000  
      income before accounting change
                                        -11,600,000 -17,400,000  -79,100,000 -33,000,000   9,900,000  
      cumulative effect of accounting change, net of tax
                                               -90,400,000  
      cumulative effect of accounting change
                                            0.05   -3.33  
      net income per share
                                        -0.29 -0.44  -2.36 0.248   -2.97  
      basic earnings per share
                                          1.46   3.28 0.64   
      diluted earnings per share
                                          1.38   2.71 0.56   
      impairment of aircraft
                                           131,100,000      
      aircraft fuel
                                            196,800,000 204,100,000 175,200,000 146,700,000  
      fuel hedging gains
                                            -24,700,000 62,900,000 27,500,000 108,200,000  
      pro forma results
                                                 
      pro forma net income
                                                 
      pro forma basic earnings per share
                                                 
      pro forma diluted earnings per share
                                                 
      other — net
                                              34,100,000   
      other selling expenses and commissions
                                              37,800,000 37,400,000  
      impairment of aircraft and related spare parts
                                                 
      pro forma basic and diluted income per share
                                                 
      other – net
                                               35,200,000  
      restructuring charges, primarily write-off of oakland leasehold improvements
                                               7,400,000  
      impairment of f-28 aircraft and spare engines
                                                 
      pro forma net loss
                                                 
      pro forma basic and diluted loss per share
                                                 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-09-30 2017-06-30 2017-03-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-06-30 2013-03-31 2012-09-30 2012-06-30 2012-03-31 2011-09-30 2011-06-30 2011-03-31 2010-03-31 2009-08-06 2009-05-08 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 
                                                                                 
        assets
                                                                                 
        cash and cash equivalents
      451,000,000 627,000,000 778,000,000 750,000,000 1,044,000,000 1,201,000,000 1,015,000,000 1,115,000,000 885,000,000 281,000,000 647,000,000 536,000,000 516,000,000 338,000,000 688,000,000 778,000,000 628,000,000 470,000,000 495,000,000 1,025,000,000 1,076,000,000 1,370,000,000 1,855,000,000 1,509,000,000 811,000,000 221,000,000 237,000,000 244,000,000 215,000,000  174,000,000 102,000,000 177,000,000 144,000,000 198,000,000 183,000,000 1,818,000,000 81,000,000 78,000,000 73,000,000 88,000,000 45,000,000 51,000,000 34,000,000 22,000,000 90,000,000 80,000,000 57,000,000 95,000,000 27,500,000 35,400,000 48,200,000 67,500,000 67,000,000 60,200,000 117,700,000 163,300,000 237,100,000 283,100,000 259,200,000 179,100,000 211,900,000 204,300,000 80,300,000 158,200,000 161,000,000 230,700,000 152,300,000 140,500,000 140,500,000 73,600,000 26,700,000 31,200,000 272,400,000 54,300,000 
        restricted cash
      27,000,000 28,000,000 28,000,000 28,000,000 28,000,000 29,000,000 27,000,000                                                                     
        marketable securities
      1,317,000,000 1,496,000,000 1,494,000,000 1,374,000,000 1,420,000,000 1,274,000,000 1,490,000,000 1,394,000,000 1,393,000,000 1,510,000,000 1,804,000,000 1,906,000,000 1,913,000,000 2,079,000,000 2,462,000,000 2,647,000,000 2,262,000,000 2,646,000,000 2,700,000,000 2,926,000,000 2,473,000,000 1,976,000,000 1,904,000,000 1,294,000,000 1,314,000,000 1,300,000,000 1,382,000,000 1,383,000,000 1,221,000,000  1,223,000,000 1,466,000,000 1,351,000,000 1,596,000,000 1,724,000,000 1,527,000,000 1,408,000,000 1,526,000,000 1,486,000,000 1,255,000,000 1,170,000,000 1,147,000,000 1,261,000,000 1,309,000,000 1,488,000,000 1,330,000,000 1,250,000,000 1,372,000,000 1,170,000,000 1,158,100,000 1,150,000,000 1,093,000,000 1,198,300,000 1,086,500,000 982,300,000 1,053,500,000 958,500,000 805,900,000 794,300,000 808,200,000 826,900,000 709,900,000 618,500,000 807,700,000 829,500,000 809,100,000 783,200,000 955,400,000 962,900,000 871,100,000 909,000,000 719,000,000 694,900,000 491,100,000 819,600,000 
        receivables - net
      630,000,000 565,000,000 586,000,000 737,000,000 569,000,000 558,000,000 510,000,000 370,000,000 384,000,000 383,000,000 341,000,000 351,000,000 340,000,000 296,000,000 345,000,000 401,000,000 658,000,000 546,000,000 536,000,000 567,000,000 517,000,000 480,000,000 321,000,000 280,000,000 279,000,000 323,000,000 377,000,000          232,000,000 254,000,000 235,000,000  205,000,000 194,000,000 187,000,000 178,000,000 203,000,000 212,000,000  195,000,000 188,000,000 185,400,000 169,400,000 168,300,000    137,300,000 156,500,000 113,500,000  143,000,000 165,000,000 158,800,000  156,800,000 189,100,000 158,300,000  145,800,000 157,100,000 139,500,000  130,100,000    
        inventories and supplies - net
      232,000,000 203,000,000 229,000,000 218,000,000 206,000,000 199,000,000 202,000,000 106,000,000 104,000,000 116,000,000 122,000,000 107,000,000 105,000,000 104,000,000 94,000,000 93,000,000 78,000,000 62,000,000 62,000,000 52,000,000 57,000,000 57,000,000 57,000,000 56,000,000 68,000,000 72,000,000 63,000,000          44,000,000 45,000,000 45,000,000 51,000,000 52,000,000 58,000,000 52,000,000 64,000,000 61,000,000 58,000,000 60,000,000 59,000,000 61,000,000 52,500,000 47,800,000 45,300,000    49,100,000 43,600,000 43,400,000  83,500,000 59,700,000 47,000,000  51,800,000 55,100,000 47,800,000  52,400,000 43,400,000 44,400,000  48,100,000    
        prepaid expenses
      281,000,000 278,000,000 285,000,000 264,000,000 281,000,000 307,000,000 270,000,000 179,000,000 177,000,000 176,000,000 187,000,000 187,000,000 181,000,000 163,000,000                                                              
        other current assets
      79,000,000 69,000,000 66,000,000 136,000,000 173,000,000 192,000,000 223,000,000 212,000,000 186,000,000 239,000,000 158,000,000 157,000,000 44,000,000 60,000,000                                                              
        total current assets
      3,017,000,000 3,266,000,000 3,466,000,000 3,507,000,000 3,721,000,000 3,760,000,000 3,737,000,000 3,376,000,000 3,129,000,000 2,705,000,000 3,644,000,000 3,244,000,000 3,099,000,000 3,040,000,000 3,810,000,000 4,232,000,000 3,974,000,000 3,920,000,000 4,001,000,000 4,771,000,000 4,284,000,000 4,006,000,000 4,465,000,000 3,244,000,000 2,572,000,000 2,037,000,000 2,202,000,000 2,218,000,000 2,001,000,000  2,056,000,000 2,216,000,000 2,114,000,000 2,214,000,000 2,425,000,000 2,213,000,000 3,600,000,000 2,003,000,000 1,923,000,000 1,663,000,000 1,715,000,000 1,654,000,000 1,776,000,000 1,799,000,000 2,020,000,000 1,934,000,000 1,762,000,000 1,986,000,000 1,839,000,000 1,716,500,000 1,698,400,000 1,656,900,000 1,726,300,000 1,675,700,000 1,596,000,000 1,651,600,000 1,593,900,000 1,465,900,000 1,508,900,000 1,678,700,000 1,734,000,000 1,541,800,000 1,390,300,000 1,468,300,000 1,629,600,000 1,594,100,000 1,572,300,000 1,697,300,000 1,732,300,000 1,601,300,000 1,540,300,000 1,308,100,000 1,199,100,000 1,234,100,000 1,242,300,000 
        property and equipment - net of accumulated depreciation and amortization of 5,080 and 4,945
      12,015,000,000                                                                           
        operating lease assets
      1,300,000,000 1,268,000,000 1,322,000,000 1,279,000,000 1,313,000,000 1,296,000,000 1,346,000,000 1,142,000,000 1,174,000,000 1,195,000,000 1,171,000,000 1,318,000,000 1,534,000,000 1,471,000,000 1,605,000,000 1,669,000,000 1,541,000,000 1,453,000,000 1,370,000,000 1,375,000,000 1,423,000,000 1,400,000,000 1,516,000,000 1,568,000,000 1,584,000,000 1,711,000,000 1,647,000,000 1,696,000,000 1,715,000,000                                               
        goodwill
      2,723,000,000 2,723,000,000 2,723,000,000 2,724,000,000 2,724,000,000 2,724,000,000 2,703,000,000            1,943,000,000 1,943,000,000 1,943,000,000 1,943,000,000 1,943,000,000 1,943,000,000 1,943,000,000 1,943,000,000 1,943,000,000 1,943,000,000 1,943,000,000  1,943,000,000 1,943,000,000 1,943,000,000 1,934,000,000 1,940,000,000 1,942,000,000                                        
        intangible assets - net of accumulated amortization of 88 and 74
      801,000,000                                                                           
        other noncurrent assets
      442,000,000 432,000,000 436,000,000 316,000,000 334,000,000 334,000,000 363,000,000 270,000,000 283,000,000 292,000,000 290,000,000 268,000,000 374,000,000 380,000,000 422,000,000 387,000,000 411,000,000 396,000,000 346,000,000 336,000,000 363,000,000 379,000,000 337,000,000 339,000,000 300,000,000 278,000,000 234,000,000 225,000,000 225,000,000  271,000,000 273,000,000 256,000,000 226,000,000 216,000,000 199,000,000                                        
        total noncurrent assets
      17,281,000,000 17,095,000,000                                                                          
        total assets
      20,298,000,000 20,361,000,000 20,012,000,000 19,885,000,000 19,818,000,000 19,768,000,000 19,559,000,000 15,342,000,000 14,813,000,000 14,613,000,000 15,165,000,000 14,829,000,000 14,296,000,000 14,186,000,000 14,531,000,000 14,800,000,000 14,210,000,000 13,951,000,000 13,882,000,000 14,656,000,000 14,262,000,000 14,046,000,000 14,749,000,000 13,998,000,000 13,363,000,000 12,993,000,000 12,983,000,000 12,951,000,000 12,640,000,000  10,893,000,000 11,055,000,000 10,848,000,000 10,739,000,000 10,720,000,000 10,302,000,000 8,699,000,000 7,035,000,000 6,829,000,000 6,533,000,000 6,564,000,000 6,480,000,000 6,410,000,000 6,236,000,000 6,314,000,000 6,061,000,000 5,838,000,000 5,852,000,000 5,644,000,000 5,436,100,000 5,423,600,000 5,382,000,000 5,260,200,000 5,233,800,000 5,111,400,000 5,015,700,000 4,941,300,000 4,779,000,000 4,835,600,000 5,065,900,000 5,095,500,000 4,777,100,000 4,490,900,000 4,456,900,000 4,479,400,000 4,343,100,000 4,077,100,000 4,139,700,000 4,091,800,000 3,888,200,000 3,792,000,000 3,509,700,000 3,370,500,000 3,300,600,000 3,335,000,000 
        liabilities and shareholders' equity
                                                                                 
        accounts payable
      409,000,000 324,000,000 322,000,000 240,000,000 237,000,000 186,000,000 242,000,000 203,000,000 181,000,000 207,000,000 229,000,000 212,000,000 206,000,000 221,000,000 202,000,000 286,000,000 299,000,000 200,000,000 181,000,000 159,000,000 133,000,000 108,000,000 93,000,000 102,000,000 119,000,000 146,000,000 120,000,000 156,000,000 157,000,000  114,000,000 115,000,000 102,000,000 97,000,000 95,000,000 95,000,000 71,000,000 78,000,000 63,000,000 63,000,000 61,000,000 56,000,000 57,000,000 68,000,000 71,000,000 75,000,000 64,000,000 71,000,000 101,000,000 70,200,000 110,800,000 129,000,000 88,000,000 71,300,000 59,200,000 53,300,000 52,500,000 63,800,000 59,600,000 81,100,000 84,200,000 97,300,000 101,500,000 88,800,000 93,300,000 75,800,000 90,000,000 89,900,000 83,200,000 130,200,000 134,600,000 138,400,000 132,600,000 142,300,000  
        accrued wages, vacation and payroll taxes
      657,000,000 881,000,000 811,000,000 697,000,000 749,000,000 1,001,000,000 822,000,000 513,000,000 481,000,000 584,000,000 561,000,000 463,000,000 431,000,000 619,000,000 583,000,000 416,000,000 367,000,000 457,000,000 426,000,000 439,000,000 456,000,000 527,000,000 541,000,000 284,000,000 316,000,000 470,000,000 391,000,000 371,000,000 301,000,000  334,000,000 345,000,000 299,000,000 345,000,000 308,000,000 281,000,000 257,000,000 239,000,000 213,000,000 298,000,000 218,000,000 179,000,000 160,000,000 201,000,000 166,000,000 146,000,000 211,000,000 140,000,000 132,000,000 163,000,000 134,700,000 123,800,000 147,900,000 136,200,000 116,000,000 113,300,000 124,400,000 100,100,000 119,500,000 100,800,000 104,700,000 97,000,000 112,300,000 102,100,000 104,500,000 108,800,000 144,000,000 133,800,000 107,000,000 92,400,000 105,900,000 93,900,000 111,300,000 112,500,000  
        air traffic liability
      2,378,000,000 1,689,000,000 1,938,000,000 2,127,000,000 2,204,000,000 1,712,000,000 1,878,000,000 1,576,000,000 1,604,000,000 1,136,000,000 1,359,000,000 1,574,000,000 1,613,000,000 1,180,000,000 1,467,000,000 1,778,000,000 1,643,000,000 1,163,000,000 1,225,000,000 1,533,000,000 1,297,000,000 1,073,000,000 1,071,000,000 1,131,000,000 1,110,000,000 900,000,000 1,032,000,000 1,173,000,000 1,116,000,000 937,000,000 950,000,000 1,112,000,000 1,122,000,000 1,103,000,000 1,255,000,000 1,218,000,000 785,000,000 870,000,000 868,000,000 669,000,000 760,000,000 840,000,000 814,000,000 703,000,000 807,000,000 749,000,000 564,000,000 724,000,000 691,000,000 583,600,000 667,200,000 654,000,000 541,100,000 594,500,000 585,400,000 468,900,000 421,500,000 399,600,000 372,700,000 461,200,000 532,200,000 473,600,000 364,500,000 406,000,000 493,100,000 451,300,000 311,200,000 358,200,000 431,000,000 395,700,000 291,800,000 320,500,000 375,600,000 340,300,000  
        other accrued liabilities
      1,121,000,000 1,055,000,000 1,007,000,000 1,096,000,000 1,042,000,000 997,000,000 958,000,000 852,000,000 791,000,000 800,000,000 806,000,000 871,000,000 908,000,000 846,000,000 805,000,000 794,000,000 659,000,000 625,000,000 603,000,000 661,000,000 541,000,000 424,000,000 406,000,000 327,000,000 382,000,000 431,000,000 476,000,000 505,000,000 480,000,000  452,000,000 483,000,000 433,000,000 886,000,000 979,000,000 909,000,000 735,000,000 757,000,000 809,000,000 661,000,000 698,000,000 736,000,000 731,000,000 680,000,000 706,000,000 672,000,000 612,000,000 711,000,000 568,000,000 537,000,000 558,500,000 551,500,000 491,000,000 544,000,000 533,400,000 510,000,000 509,000,000 499,800,000 475,400,000 482,800,000 498,400,000 500,100,000 448,500,000 433,700,000 449,700,000 460,700,000 404,300,000 433,300,000 430,000,000 370,200,000 336,000,000 350,700,000 350,900,000 342,700,000  
        deferred revenue
      1,781,000,000 1,722,000,000 1,837,000,000 1,824,000,000 1,727,000,000 1,592,000,000 1,614,000,000 1,312,000,000 1,313,000,000 1,221,000,000 1,233,000,000 1,207,000,000 1,218,000,000 1,123,000,000 1,068,000,000 1,012,000,000 1,038,000,000 912,000,000 904,000,000 922,000,000 818,000,000 733,000,000 663,000,000 555,000,000 478,000,000 750,000,000 794,000,000 768,000,000 757,000,000 518,000,000 693,000,000 667,000,000 649,000,000 682,000,000 652,000,000 641,000,000 491,000,000 480,000,000 467,000,000 431,000,000 416,000,000 401,000,000 382,000,000 356,000,000 342,000,000 334,000,000 335,000,000 455,000,000 441,000,000 423,400,000 414,000,000 406,200,000 394,000,000 386,700,000 387,700,000 419,100,000 454,300,000 424,700,000 421,300,000 407,800,000 442,500,000 429,300,000 413,600,000 391,300,000 373,300,000 335,600,000 333,000,000 317,700,000 305,300,000 293,700,000 291,100,000 276,500,000 313,800,000 307,400,000  
        current portion of long-term debt and finance leases
      498,000,000 721,000,000     523,000,000 359,000,000 301,000,000 353,000,000 736,000,000 572,000,000                                                                
        current portion of operating lease liabilities
      212,000,000 197,000,000 216,000,000 217,000,000 214,000,000 207,000,000 211,000,000 153,000,000 158,000,000 158,000,000 150,000,000 277,000,000 213,000,000 228,000,000 263,000,000 274,000,000 272,000,000 268,000,000 260,000,000 263,000,000 271,000,000 290,000,000 283,000,000 273,000,000 266,000,000 269,000,000 268,000,000 273,000,000 275,000,000                                               
        total current liabilities
      7,056,000,000 6,589,000,000 6,659,000,000 6,709,000,000 6,700,000,000 6,145,000,000 6,248,000,000 4,968,000,000 4,829,000,000 4,459,000,000 5,074,000,000 5,176,000,000 4,857,000,000 4,493,000,000 4,709,000,000 4,902,000,000 4,570,000,000 3,991,000,000 4,024,000,000 4,846,000,000 4,762,000,000 4,293,000,000 4,207,000,000 4,120,000,000 3,730,000,000 3,201,000,000 3,346,000,000 3,534,000,000 3,386,000,000  2,888,000,000 3,036,000,000 2,992,000,000 2,765,000,000 2,974,000,000 2,835,000,000 2,123,000,000 2,061,000,000 2,069,000,000 1,806,000,000 1,854,000,000 1,927,000,000 1,880,000,000 1,767,000,000 1,864,000,000 1,755,000,000 1,580,000,000 1,756,000,000 1,598,000,000 1,528,800,000 1,664,300,000 1,673,200,000 1,518,300,000 1,628,000,000 1,484,400,000 1,339,500,000 1,340,400,000 1,285,600,000 1,360,600,000 1,540,500,000 1,649,800,000 1,482,400,000 1,388,000,000 1,299,600,000 1,408,500,000 1,380,300,000 1,236,700,000 1,380,500,000 1,423,200,000 1,330,700,000 1,165,600,000 1,101,600,000 1,085,900,000 1,056,100,000  
        long-term debt and finance leases, net of current portion
      4,822,000,000 4,834,000,000     4,159,000,000                                                                     
        operating lease liabilities, net of current portion
      1,136,000,000 1,141,000,000 1,197,000,000 1,157,000,000 1,200,000,000 1,198,000,000                                                                      
        deferred income taxes
      879,000,000 1,004,000,000 976,000,000 938,000,000 871,000,000 934,000,000 889,000,000 746,000,000 649,000,000 695,000,000 662,000,000 606,000,000 523,000,000 574,000,000 571,000,000 552,000,000 509,000,000 578,000,000 501,000,000 439,000,000 365,000,000 407,000,000 499,000,000 619,000,000 665,000,000 715,000,000 708,000,000 582,000,000 520,000,000 454,000,000 494,000,000 437,000,000 372,000,000 682,000,000 598,000,000 509,000,000 733,000,000 721,000,000 678,000,000 682,000,000 126,000,000 123,000,000 123,000,000 114,000,000 112,000,000 120,000,000 113,000,000 175,000,000 172,000,000 141,500,000 152,100,000 142,500,000 130,200,000 126,400,000 116,300,000 133,000,000 158,200,000 170,300,000 164,400,000 130,200,000 63,400,000 105,000,000 84,900,000 91,500,000 144,300,000 139,700,000 134,200,000 122,900,000 103,100,000 98,500,000 91,800,000 61,800,000 75,500,000 80,200,000 74,700,000 
        obligation for pension and post-retirement medical benefits
      360,000,000 369,000,000 439,000,000 452,000,000 457,000,000 460,000,000 505,000,000 358,000,000 365,000,000 362,000,000 368,000,000 362,000,000 355,000,000 348,000,000 296,000,000 299,000,000 302,000,000 305,000,000                                                          
        other liabilities
      614,000,000 595,000,000 586,000,000 548,000,000 531,000,000 457,000,000 452,000,000 352,000,000 311,000,000 295,000,000 361,000,000 327,000,000 297,000,000 305,000,000 345,000,000 353,000,000 363,000,000 378,000,000 391,000,000 422,000,000 482,000,000 524,000,000 476,000,000 373,000,000 253,000,000 232,000,000 213,000,000 197,000,000 210,000,000 451,000,000 428,000,000 417,000,000 423,000,000 429,000,000 427,000,000 438,000,000 355,000,000 366,000,000 359,000,000 362,000,000 341,000,000 339,000,000 332,000,000 312,000,000 315,000,000 309,000,000 308,000,000 318,000,000 332,000,000 213,000,000 204,800,000 184,100,000 170,300,000 148,600,000 108,600,000 131,600,000 159,100,000 165,500,000 174,100,000 427,000,000 420,000,000 395,400,000 408,100,000 461,200,000 462,100,000 478,000,000 475,600,000 375,800,000 353,100,000 368,900,000 382,200,000 285,700,000 253,200,000 241,100,000  
        total noncurrent liabilities
      9,511,000,000 9,654,000,000 9,324,000,000 9,234,000,000 8,981,000,000 9,251,000,000 8,832,000,000 3,835,000,000 3,743,000,000 3,859,000,000 3,870,000,000 3,813,000,000 3,955,000,000 3,994,000,000 4,107,000,000 4,138,000,000 3,925,000,000 3,986,000,000                                                          
        commitments and contingencies
                                                                                 
        shareholders' equity
                                                                                 
        preferred stock, 0.01 par value...
                                                                                 
        common stock, 0.01 par value...
      1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000  1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000  1,000,000 1,000,000 1,000,000 1,000,000 1,000,000                               
        capital in excess of par value
      973,000,000 961,000,000 913,000,000 899,000,000 844,000,000 811,000,000 769,000,000 757,000,000 707,000,000 695,000,000 659,000,000 648,000,000 587,000,000 577,000,000 549,000,000 542,000,000 503,000,000 494,000,000 462,000,000 454,000,000 409,000,000 391,000,000 366,000,000 350,000,000 314,000,000 305,000,000 297,000,000 270,000,000 261,000,000  224,000,000 198,000,000 190,000,000 156,000,000 135,000,000 126,000,000 103,000,000 91,000,000 86,000,000 73,000,000 70,000,000 56,000,000 211,000,000 399,000,000 551,000,000 524,000,000 538,000,000 629,000,000 657,000,000 660,300,000 674,200,000 677,800,000 843,300,000 838,900,000 828,300,000 779,700,000 924,500,000 921,700,000 915,000,000 911,100,000 902,400,000 899,100,000 895,100,000 892,600,000 888,400,000 884,700,000 877,900,000 868,600,000 862,800,000 705,100,000 710,300,000 513,000,000 498,500,000 497,500,000  
        treasury stock
      -1,904,000,000 -1,701,000,000 -1,671,000,000 -1,666,000,000 -1,238,000,000 -1,131,000,000 -882,000,000 -868,000,000 -840,000,000 -819,000,000 -744,000,000 -731,000,000 -692,000,000 -674,000,000 -674,000,000 -674,000,000 -674,000,000 -674,000,000 -674,000,000 -674,000,000 -674,000,000 -674,000,000 -674,000,000 -674,000,000 -674,000,000 -643,000,000 -621,000,000 -593,000,000 -581,000,000  -556,000,000 -544,000,000 -531,000,000 -494,000,000 -466,000,000 -443,000,000 -444,000,000 -444,000,000 -377,000,000 -250,000,000 -127,000,000 -8,000,000 -7,000,000 -5,000,000 -5,000,000 -1,000,000 -2,000,000              -161,400,000 -153,100,000         -56,600,000  -60,400,000 -60,500,000  
        accumulated other comprehensive loss
      -176,000,000 -173,000,000 -223,000,000 -228,000,000 -234,000,000 -239,000,000 -268,000,000 -287,000,000 -294,000,000 -299,000,000 -360,000,000 -365,000,000 -365,000,000 -388,000,000 -328,000,000 -308,000,000 -292,000,000 -262,000,000 -482,000,000 -487,000,000 -494,000,000 -494,000,000 -450,000,000 -458,000,000 -482,000,000 -465,000,000 -421,000,000 -422,000,000 -433,000,000  -428,000,000 -435,000,000 -440,000,000 -289,000,000 -294,000,000 -299,000,000 -284,000,000 -287,000,000 -294,000,000 -303,000,000 -303,000,000 -304,000,000 -305,000,000 -178,000,000 -178,000,000 -181,000,000 -183,000,000 -424,000,000 -429,000,000 -373,600,000 -380,800,000 -382,400,000    -237,000,000 -309,900,000 -320,900,000 -328,300,000 -135,700,000 -132,800,000 -127,800,000 -133,300,000 -181,600,000 -188,400,000  -191,400,000 -130,200,000 -131,900,000 -132,300,000 -132,000,000 -87,700,000 -85,000,000 -82,700,000  
        retained earnings
      4,837,000,000 5,030,000,000 5,009,000,000 4,936,000,000 4,764,000,000 4,930,000,000 4,859,000,000 4,623,000,000 4,403,000,000 4,535,000,000 4,537,000,000 4,398,000,000 4,158,000,000 4,300,000,000 4,278,000,000 4,238,000,000 4,099,000,000 4,242,000,000 4,224,000,000 4,030,000,000 3,633,000,000 3,764,000,000 4,211,000,000 4,642,000,000 4,856,000,000 5,133,000,000 4,996,000,000 4,717,000,000 4,498,000,000 4,454,000,000 4,550,000,000 4,373,000,000 4,219,000,000 4,117,000,000 3,888,000,000 3,629,000,000 3,488,000,000 3,266,000,000 3,039,000,000 2,890,000,000 2,724,000,000 2,474,000,000 2,266,000,000 2,012,000,000 1,831,000,000 1,684,000,000 1,607,000,000 1,268,000,000 1,164,000,000 1,082,300,000 918,900,000 851,400,000 746,600,000 669,100,000 640,300,000 320,300,000 203,300,000 174,200,000 193,400,000 268,600,000 359,100,000 296,000,000 331,900,000 328,500,000 242,700,000 196,600,000 206,900,000 237,100,000 254,500,000 199,000,000 278,100,000 311,100,000 220,900,000 203,500,000  
        total shareholders' equity
      3,731,000,000 4,118,000,000 4,029,000,000 3,942,000,000 4,137,000,000 4,372,000,000 4,479,000,000                                                                     
        total liabilities and shareholders' equity
      20,298,000,000 20,361,000,000 20,012,000,000 19,885,000,000 19,818,000,000 19,768,000,000 19,559,000,000 15,342,000,000 14,813,000,000 14,613,000,000 15,165,000,000 14,829,000,000 14,296,000,000 14,186,000,000 14,531,000,000 14,800,000,000 14,210,000,000 13,951,000,000 13,882,000,000 14,656,000,000 14,262,000,000 14,046,000,000 14,749,000,000 13,998,000,000 13,363,000,000 12,993,000,000 12,983,000,000 12,951,000,000 12,640,000,000  10,893,000,000 11,055,000,000 10,848,000,000 10,739,000,000 10,720,000,000 10,302,000,000 8,699,000,000 7,035,000,000 6,829,000,000 6,533,000,000 6,564,000,000 6,480,000,000 6,410,000,000 6,236,000,000 6,314,000,000 6,061,000,000 5,838,000,000 5,852,000,000 5,644,000,000 5,436,100,000 5,423,600,000 5,382,000,000 5,260,200,000 5,233,800,000 5,111,400,000 5,015,700,000 4,941,300,000 4,779,000,000          4,139,700,000        
        property and equipment - net of accumulated depreciation and amortization of 4,945 and 4,548
       11,857,000,000                                                                          
        intangible assets - net of accumulated amortization of 74 and 16
       815,000,000                                                                          
        current assets
                                                                                 
        total cash, restricted cash, and marketable securities
        2,300,000,000 2,152,000,000 2,492,000,000 2,504,000,000 2,532,000,000                                                                     
        property and equipment
                                                                                 
        aircraft and other flight equipment
        12,953,000,000 13,056,000,000 12,619,000,000 12,273,000,000 12,349,000,000 10,734,000,000 10,363,000,000 10,425,000,000 10,015,000,000 9,918,000,000 9,189,000,000 9,053,000,000 8,811,000,000 8,569,000,000 8,244,000,000 8,127,000,000 8,076,000,000 7,996,000,000 7,933,000,000 7,761,000,000 7,851,000,000 8,257,000,000 8,228,000,000 8,549,000,000 8,492,000,000 8,417,000,000 8,340,000,000  7,911,000,000 7,788,000,000 7,567,000,000 7,590,000,000 7,377,000,000 7,137,000,000 6,398,000,000 6,198,000,000 5,945,000,000 5,690,000,000 5,557,000,000 5,345,000,000 5,204,000,000 5,100,000,000 4,993,000,000 4,855,000,000 4,677,000,000 4,405,000,000 4,361,000,000 4,118,900,000 4,099,500,000 4,113,500,000 4,058,000,000 4,065,800,000 4,002,700,000 3,667,600,000 3,594,600,000 3,481,700,000 3,431,000,000 3,357,800,000 3,219,200,000 3,100,300,000 2,981,200,000 2,822,800,000 2,670,300,000 2,594,000,000 2,296,600,000 2,135,600,000 2,047,300,000 2,004,700,000 2,265,500,000 2,258,800,000 2,236,700,000   
        other property and equipment
        2,367,000,000 2,267,000,000 2,197,000,000 2,173,000,000 2,109,000,000 1,941,000,000 1,839,000,000 1,814,000,000 1,756,000,000 1,714,000,000 1,661,000,000 1,661,000,000 1,589,000,000 1,532,000,000 1,529,000,000 1,489,000,000 1,446,000,000 1,433,000,000 1,407,000,000 1,398,000,000 1,395,000,000 1,381,000,000 1,343,000,000 1,306,000,000 1,272,000,000 1,238,000,000 1,197,000,000  1,322,000,000 1,291,000,000 1,287,000,000 1,187,000,000 1,158,000,000 1,139,000,000 1,021,000,000 994,000,000 967,000,000 955,000,000 936,000,000 915,000,000 899,000,000 883,000,000 867,000,000 853,000,000 838,000,000 867,000,000 862,000,000 848,500,000 857,100,000 851,400,000 730,100,000 621,700,000 614,300,000 635,900,000 627,100,000 618,200,000 608,600,000 603,800,000 590,900,000 578,900,000 574,500,000 561,900,000 558,500,000 541,600,000 530,700,000 518,900,000 504,700,000 488,600,000 481,000,000 473,500,000 471,600,000 467,800,000 471,800,000 
        deposits for future flight equipment
        710,000,000 621,000,000 700,000,000 883,000,000 612,000,000 383,000,000 431,000,000 491,000,000 538,000,000 550,000,000 580,000,000 670,000,000 300,000,000 292,000,000 283,000,000 384,000,000 378,000,000 402,000,000 420,000,000 583,000,000 595,000,000 591,000,000 590,000,000 533,000,000 463,000,000 396,000,000 325,000,000  429,000,000 505,000,000 560,000,000 531,000,000 526,000,000 541,000,000 489,000,000 551,000,000 617,000,000 771,000,000 775,000,000 905,000,000 778,000,000 511,000,000 431,000,000 360,000,000 446,000,000 443,000,000 341,000,000 385,400,000 331,400,000 266,000,000 208,100,000 165,500,000 146,800,000 219,500,000 179,300,000 253,300,000 309,800,000 397,100,000 438,400,000 440,900,000 430,000,000 434,100,000 412,600,000 367,400,000 437,800,000 440,400,000 388,000,000 320,800,000 305,300,000  203,600,000 82,500,000 67,100,000 
        property and equipment - sum
        16,030,000,000 15,944,000,000 15,516,000,000 15,329,000,000 15,070,000,000 13,058,000,000 12,633,000,000 12,730,000,000 12,309,000,000 12,182,000,000 11,430,000,000 11,384,000,000 10,700,000,000  10,056,000,000     9,742,000,000   10,161,000,000                                                   
        less accumulated depreciation and amortization
        -4,794,000,000 -4,729,000,000 -4,649,000,000 -4,548,000,000 -4,548,000,000 4,537,000,000 4,439,000,000 4,342,000,000 4,283,000,000 4,219,000,000 4,178,000,000 4,127,000,000 4,046,000,000 3,922,000,000 3,814,000,000 3,862,000,000 3,780,000,000 3,703,000,000 3,616,000,000 3,531,000,000 3,460,000,000 3,434,000,000 3,307,000,000 3,486,000,000 3,393,000,000 3,307,000,000 3,233,000,000  3,167,000,000 3,091,000,000 3,011,000,000 3,078,000,000 3,059,000,000 3,008,000,000 2,877,000,000 2,784,000,000 2,699,000,000 2,614,000,000 2,534,000,000 2,460,000,000 2,384,000,000 2,250,000,000 2,189,000,000 2,138,000,000 2,068,000,000 1,990,000,000 1,925,000,000 1,805,300,000 1,740,600,000 1,727,200,000 1,646,100,000 1,603,100,000 1,561,600,000 1,387,000,000 1,246,800,000 1,226,000,000 1,181,700,000 1,141,200,000 1,106,700,000 1,063,500,000 1,023,400,000 985,100,000 947,600,000 932,500,000 906,100,000 843,900,000 809,500,000 774,800,000 1,019,600,000 988,000,000 979,900,000 951,800,000 924,900,000 
        total property and equipment - net
        11,236,000,000 11,215,000,000 10,867,000,000 10,781,000,000 10,522,000,000 8,521,000,000 8,194,000,000 8,388,000,000 8,026,000,000 7,963,000,000 7,252,000,000 7,257,000,000 6,654,000,000 6,471,000,000 6,242,000,000 6,138,000,000 6,120,000,000 6,128,000,000 6,144,000,000 6,211,000,000 6,381,000,000 6,795,000,000 6,854,000,000 6,902,000,000 6,834,000,000 6,744,000,000 6,629,000,000        5,031,000,000 4,959,000,000 4,830,000,000 4,802,000,000 4,734,000,000 4,705,000,000 4,497,000,000 4,244,000,000 4,102,000,000 3,930,000,000 3,893,000,000 3,725,000,000 3,639,000,000 3,547,500,000 3,547,400,000 3,503,700,000    3,136,000,000 3,154,200,000 3,127,200,000  3,217,500,000 3,141,800,000 3,056,600,000  2,833,700,000 2,693,800,000 2,570,500,000  2,251,000,000 2,130,500,000 2,039,300,000  1,958,600,000    
        other assets
                        3,761,000,000 3,757,000,000 3,834,000,000  3,903,000,000 3,959,000,000 3,937,000,000  3,947,000,000 3,989,000,000 4,010,000,000  2,342,000,000 2,346,000,000 2,331,000,000 2,295,000,000 2,293,000,000 2,280,000,000 68,000,000 73,000,000 76,000,000 68,000,000 115,000,000 121,000,000 137,000,000 193,000,000 192,000,000 197,000,000 179,000,000 128,000,000 143,000,000 129,000,000 138,500,000 148,600,000 136,600,000 223,300,000 211,600,000 180,000,000 153,300,000 158,400,000 123,100,000 139,800,000 147,800,000 160,400,000 126,500,000 140,400,000 137,200,000 154,500,000 123,100,000 131,300,000 149,000,000 163,900,000 134,000,000 133,300,000 129,900,000 139,300,000 145,800,000 
        intangible assets - net of accumulated amortization of 60 and 16
        829,000,000                                                                         
        total other assets
        5,310,000,000 5,163,000,000 5,230,000,000 5,227,000,000 5,300,000,000 3,445,000,000 3,490,000,000 3,520,000,000 3,495,000,000 3,622,000,000 3,945,000,000 3,889,000,000 4,067,000,000 4,097,000,000 3,994,000,000 3,893,000,000    3,829,000,000    4,054,000,000                                                  
        current liabilities
                                                                                 
        current portion of long-term debt
        519,000,000 500,000,000 519,000,000 442,000,000       268,000,000 276,000,000 321,000,000 342,000,000 292,000,000 366,000,000 425,000,000 869,000,000 1,246,000,000 1,138,000,000 1,150,000,000 1,087,000,000 1,059,000,000 235,000,000 265,000,000 288,000,000 300,000,000  345,000,000 314,000,000 387,000,000 334,000,000 337,000,000 332,000,000 275,000,000 117,000,000 116,000,000 115,000,000 117,000,000 116,000,000 118,000,000 115,000,000 114,000,000 113,000,000 117,000,000 110,000,000 106,000,000 167,200,000 183,400,000 210,100,000 213,600,000 253,900,000 169,800,000 158,200,000 167,300,000 164,400,000 244,900,000 254,500,000 262,200,000 155,000,000 175,900,000 97,200,000 107,300,000 118,000,000 119,100,000 203,600,000 201,200,000 168,300,000      
        current portion of finance lease liabilities
        9,000,000 8,000,000 8,000,000 8,000,000                                                                      
        noncurrent liabilities
                                                                                 
        long-term debt
        4,490,000,000 4,448,000,000 4,290,000,000 4,491,000,000  2,313,000,000 2,264,000,000 2,182,000,000 2,128,000,000 1,889,000,000 1,795,000,000 1,883,000,000 1,889,000,000 1,961,000,000 2,078,000,000 2,173,000,000 2,225,000,000 2,319,000,000 2,325,000,000 2,357,000,000 2,672,000,000 1,549,000,000 1,203,000,000 1,264,000,000 1,444,000,000 1,538,000,000 1,664,000,000  1,684,000,000 1,998,000,000 2,062,000,000 2,367,000,000 2,469,000,000 2,531,000,000 1,861,000,000 509,000,000 531,000,000 571,000,000 593,000,000 629,000,000 650,000,000 710,000,000 745,000,000 721,000,000 754,000,000 814,000,000 840,000,000 898,900,000 957,100,000 1,036,900,000 1,178,800,000 1,154,900,000 1,275,200,000 1,657,200,000 1,669,700,000 1,619,300,000 1,596,300,000 1,613,100,000 1,444,900,000 1,380,000,000 1,124,600,000 1,151,800,000 1,177,000,000 1,171,300,000 1,031,700,000 945,500,000 889,200,000 1,027,400,000      
        finance lease liabilities, net of current portion
        40,000,000 43,000,000 45,000,000 47,000,000                                                                      
        intangible assets - net
         844,000,000 859,000,000 873,000,000 888,000,000            102,000,000 103,000,000 105,000,000 107,000,000 107,000,000 109,000,000 110,000,000 122,000,000 123,000,000 125,000,000 127,000,000                                               
        as of december 31
           2,024,000,000    2,023,000,000    2,022,000,000    2,021,000,000    2,020,000,000    2,019,000,000              2,015,000,000       2,013,000,000            2,008,000,000    2,007,000,000    2,006,000,000    2,005,000,000     
        long-term operating lease liabilities, net of current portion
            1,249,000,000 1,050,000,000 1,098,000,000 1,125,000,000 1,113,000,000 1,148,000,000 1,455,000,000 1,393,000,000 1,482,000,000 1,505,000,000 1,357,000,000 1,279,000,000 1,206,000,000 1,222,000,000 1,283,000,000 1,268,000,000 1,320,000,000 1,376,000,000 1,375,000,000 1,439,000,000 1,376,000,000 1,424,000,000 1,443,000,000                                               
        total cash and marketable securities
             2,509,000,000 2,278,000,000 1,791,000,000 2,451,000,000 2,442,000,000 2,429,000,000 2,417,000,000 3,150,000,000 3,425,000,000 2,890,000,000 3,116,000,000 3,195,000,000 3,951,000,000 3,549,000,000 3,346,000,000 3,759,000,000 2,803,000,000 2,125,000,000 1,521,000,000 1,619,000,000 1,627,000,000 1,436,000,000  1,397,000,000 1,568,000,000 1,528,000,000 1,740,000,000 1,922,000,000 1,710,000,000 3,226,000,000 1,607,000,000 1,564,000,000 1,328,000,000 1,258,000,000 1,192,000,000 1,312,000,000 1,343,000,000 1,510,000,000 1,420,000,000 1,330,000,000 1,429,000,000 1,265,000,000 1,185,600,000 1,185,400,000 1,141,200,000 1,265,800,000 1,153,500,000 1,042,500,000 1,171,200,000 1,121,800,000 1,043,000,000 1,077,400,000 1,067,400,000 1,006,000,000 921,800,000 822,800,000 888,000,000 987,700,000 970,100,000 1,013,900,000         
        goodwill and intangible assets
             2,033,000,000 2,033,000,000 2,033,000,000 2,034,000,000 2,036,000,000 2,037,000,000 2,038,000,000 2,040,000,000 2,041,000,000 2,042,000,000 2,044,000,000                                                          
        shareholders' equity - sum
             4,226,000,000 3,977,000,000 4,113,000,000 4,093,000,000 3,951,000,000 3,689,000,000 3,816,000,000 3,826,000,000  3,637,000,000     2,988,000,000   4,015,000,000                                                   
        assets held for sale
                385,000,000                                                                 
        prepaid expenses and other current assets
                    221,000,000 313,000,000 348,000,000 196,000,000    123,000,000  105,000,000 100,000,000 121,000,000 143,000,000 147,000,000 149,000,000 127,000,000 180,000,000 180,000,000 174,000,000 116,000,000 125,000,000 132,000,000 98,000,000 97,000,000 79,000,000 72,000,000 74,000,000 87,000,000 102,000,000 100,000,000 134,000,000 124,000,000 95,000,000 114,000,000 132,000,000 116,100,000 121,700,000 100,900,000 106,700,000 104,000,000 111,400,000 102,100,000 74,400,000 82,300,000 82,000,000 84,700,000 95,300,000 98,400,000 85,400,000 109,700,000 93,900,000 110,600,000 88,100,000 102,000,000 119,300,000 99,700,000 84,300,000 105,200,000 102,000,000 102,700,000 152,300,000 
        prepaid expenses, assets held-for-sale, and other current assets
                        208,000,000 201,000,000 161,000,000  328,000,000                                                     
        obligation for pension and postretirement medical benefits
                        558,000,000 660,000,000 663,000,000 665,000,000 601,000,000 581,000,000 577,000,000 571,000,000 467,000,000 522,000,000 513,000,000  470,000,000 464,000,000 458,000,000 323,000,000 336,000,000 334,000,000 272,000,000 271,000,000 270,000,000 270,000,000 249,000,000 247,000,000 247,000,000 124,000,000 123,000,000 122,000,000 123,000,000 470,000,000 479,000,000 447,900,000 452,900,000 458,400,000 336,300,000 361,200,000 364,100,000 412,800,000 583,300,000 589,400,000 584,700,000                 
        other liabilities and credits
                                                                                 
        total other liabilities and credits
                           4,408,000,000    4,197,000,000                                                  
        deferred payroll support program grant
                             361,000,000                                                    
        noncurrent liabilities - sum
                              4,415,000,000                                                   
        receivables—net
                                 389,000,000 358,000,000  422,000,000 411,000,000 350,000,000 301,000,000 326,000,000 321,000,000                                        
        inventories and supplies—net
                                 55,000,000 58,000,000  57,000,000 57,000,000 62,000,000 57,000,000 52,000,000 50,000,000                       51,900,000    46,600,000    44,700,000    44,000,000     
        current assets:
                                                                                 
        current liabilities:
                                                                                 
        other liabilities and credits:
                                                                                 
        shareholders' equity:
                                                                                 
        total property and equipment—net
                                    6,495,000,000 6,493,000,000 6,403,000,000 6,230,000,000 6,002,000,000 5,809,000,000                       3,167,700,000    2,962,300,000    2,359,000,000    2,032,200,000     
        intangible assets
                                    128,000,000 130,000,000 132,000,000 135,000,000 137,000,000 139,000,000                                    38,600,000 38,600,000 38,600,000 38,600,000 
        receivables - less allowance for doubtful accounts of 1 and 1
                                             212,000,000                                    
        preferred stock, 0.01 par value authorized: 5,000,000 shares, none issued or outstanding
                                                                                 
        common stock
                                             1,000,000      69,000,000 69,000,000 70,000,000 70,000,000 70,200,000 70,700,000 71,200,000 37,800,000 37,700,000 37,400,000      42,900,000        42,200,000  35,900,000   29,800,000  
        preferred stock, 1 par value authorized: 5,000,000 shares, none issued or outstanding
                                                                                 
        receivables - less allowance for doubtful accounts of 1 and 0
                                                    152,000,000                             
        fuel hedge contracts
                                                    12,000,000 14,000,000 21,000,000 35,400,000 22,000,000 58,700,000 31,000,000 71,400,000 118,900,000 58,900,000 39,400,000 13,400,000 16,500,000 68,800,000 233,300,000 104,100,000 100,700,000 60,600,000 54,600,000 58,000,000 45,900,000 55,100,000 93,800,000 98,900,000 101,400,000 140,700,000 123,600,000 124,400,000  
        accrued aircraft rent
                                                    12,000,000   7,800,000 9,700,000 4,800,000 36,700,000 28,100,000 20,600,000 35,800,000 61,600,000 52,200,000 64,400,000 59,000,000 56,800,000 52,700,000 73,400,000 61,900,000 55,700,000 56,100,000 56,800,000 50,300,000 58,600,000 65,200,000 71,800,000 64,000,000 58,500,000 64,300,000  
        receivables – net
                                                          148,300,000 167,800,000 161,200,000                   119,600,000  
        inventories and supplies – net
                                                          44,300,000 52,600,000 45,700,000                   43,700,000  
        total property and equipment – net
                                                          3,350,100,000 3,249,900,000 3,202,200,000                   1,823,500,000  
        see accompanying notes to condensed consolidated financial statements.
                                                                                 
        condensed consolidated balance sheets
                                                                                 
        alaska air group, inc.
                                                                                 
        preferred stock, 1 par value
                                                                                 
        authorized: 5,000,000 shares, none issued or outstanding
                                                                                 
        authorized: 100,000,000 shares
                                                                                 
        issued: 2010 - 36,174,693 shares
                                                                                 
        2009 - 35,843,092 shares
                                                             36,200,000                    
        2009 - 252,084 shares
                                                             -13,800,000                    
        fuel hedge contracts liability
                                                              4,100,000 5,700,000 24,100,000                 
        issued: 2009 - 43,319,031 shares
                                                                                 
        2008 - 43,171,404 shares
                                                              43,300,000 43,300,000                  
        2008 - 6,896,506 shares
                                                              -172,800,000 -161,000,000                  
        issued: 2009 - 43,263,925 shares
                                                                                 
        securities lending collateral
                                                                 101,100,000 111,300,000 106,700,000 111,900,000 109,900,000 104,900,000 109,600,000 111,300,000 111,400,000 112,200,000 108,700,000 112,000,000     
        receivables—less allowance for doubtful accounts of 1.5 and 1.6
                                                                116,700,000                 
        liabilities and shareholders’ equity
                                                                                 
        securities lending obligation
                                                                 101,100,000 111,300,000 106,700,000 111,900,000 109,900,000 104,900,000 109,600,000 111,300,000 111,400,000 112,200,000 108,700,000 112,000,000 76,500,000    
        shareholders’ equity
                                                                                 
        issued: 2008—43,171,404 shares
                                                                                 
        2007—42,821,986 shares
                                                                43,200,000                 
        2007—4,771,306 shares
                                                                -161,400,000                 
        total liabilities and shareholders’ equity
                                                                4,835,600,000 5,065,900,000 5,095,500,000 4,777,100,000 4,490,900,000 4,456,900,000 4,479,400,000 4,343,100,000 4,077,100,000  4,091,800,000 3,888,200,000 3,792,000,000 3,509,700,000 3,370,500,000 3,300,600,000  
        issued: 2008 - 43,105,423 shares
                                                                                 
        2007 - 42,821,986 shares
                                                                 43,100,000                
        2007 - 4,771,306 shares
                                                                 -161,400,000                
        issued: 2008 - 42,866,235 shares 2007 - 42,821,986 shares
                                                                   42,900,000              
        receivables—less allowance for doubtful accounts of 1.6 and 2.9
                                                                    138,000,000             
        issued: 2007—42,821,986 shares
                                                                                 
        2006—42,501,163 shares
                                                                    42,800,000             
        2006—2,207,474 shares
                                                                    -112,500,000             
        issued: 2007 - 42,699,874 shares
                                                                                 
        2006 - 42,501,163 shares
                                                                     42,700,000 42,700,000           
        2006 - 2,207,474 shares
                                                                     -54,800,000 -49,700,000           
        issued: 2007 - 42,655,368 shares
                                                                                 
        issued: 2007 - 42,616,739 shares 2006 - 42,501,163 shares
                                                                       42,600,000          
        receivables—less allowance for doubtful accounts of 2.9 and 2.7
                                                                        134,200,000         
        intangible asset related to additional minimum pension liability
                                                                          33,600,000 33,600,000      
        issued: 2006—42,501,163 shares
                                                                                 
        2005— 35,932,925 shares
                                                                        42,500,000         
        2005—2,478,779 shares
                                                                        -50,400,000         
        deferred stock-based compensation
                                                                            -8,100,000 -9,200,000 -2,800,000 -3,100,000  
        intangible assets related to additional minimum pension liability
                                                                         33,600,000   33,600,000     
        issued: 2006 - 42,336,784 shares
                                                                                 
        2005 - 35,932,925 shares
                                                                         42,300,000  36,000,000      
        2005 - 2,478,779 shares
                                                                         -52,800,000 -53,400,000 -56,300,000      
        issued: 2006 - 35,972,362 shares
                                                                                 
        receivables—less allowance for doubtful accounts
                                                                            124,200,000     
        current portion of long-term debt and capital lease obligations
                                                                            113,500,000 57,600,000 57,000,000 54,000,000  
        long-term debt and capital lease obligations, net of current portion
                                                                            969,100,000     
        restricted securities lending collateral
                                                                             76,500,000    
        aircraft purchase deposits
                                                                             214,300,000    
        long-term debt and capital lease obligations
                                                                             970,000,000 979,500,000   
        issued: 2005 -30,130,917 shares
                                                                                 
        2004 - 29,777,388 shares
                                                                             30,100,000    
        2004 - 2,651,368 shares
                                                                             -57,700,000    
        receivables — net
                                                                              125,800,000   
        inventories and supplies — net
                                                                              46,100,000  42,000,000 
        total property and equipment — net
                                                                              1,932,000,000  1,908,300,000 
        issued: 2005 -29,880,002 shares 2004 - 29,777,388 shares
                                                                              29,900,000   
        flight equipment
                                                                               2,225,000,000 2,294,300,000 
        long-term debt and capital lease obligations, net of current
                                                                               980,400,000  
        authorized: 100,000,000 shares issued:
                                                                                 
        issued: 2005 - 29,832,756 shares 2004 - 29,777,388 shares
                                                                                 
        receivables — less allowance for doubtful accounts
                                                                                99,400,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-09-30 2017-06-30 2017-03-31 2016-09-30 2016-06-30 2016-03-31 2015-09-30 2015-06-30 2015-03-31 2014-03-31 2013-06-30 2013-03-31 2012-09-30 2012-06-30 2012-03-31 2011-09-30 2011-06-30 2011-03-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-05-08 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 
                                                                                  
          cash flows from operating activities:
                                                                                  
          net loss
        -193,000,000    -166,000,000    -132,000,000    -142,000,000    -143,000,000    -131,000,000                                     -19,200,000    -35,900,000       55,500,000 -79,100,000   17,400,000 -80,500,000 
          adjustments to reconcile net loss to net cash from operating activities:
                                                                                  
          depreciation and amortization
        204,000,000 199,000,000 203,000,000 199,000,000 194,000,000 190,000,000 139,000,000 128,000,000 126,000,000 121,000,000 113,000,000 113,000,000 104,000,000 105,000,000 104,000,000 104,000,000 102,000,000 100,000,000 99,000,000 98,000,000 97,000,000 100,000,000 105,000,000 107,000,000 108,000,000 106,000,000 106,000,000 105,000,000 106,000,000 108,000,000 99,000,000 97,000,000 94,000,000 95,000,000 90,000,000 90,000,000 101,000,000 92,000,000 88,000,000 81,000,000 79,000,000 76,000,000 70,000,000 67,000,000 69,000,000 65,900,000 65,800,000 63,700,000 62,200,000 61,700,000 60,300,000 57,800,000 58,000,000 56,200,000 56,900,000 55,600,000 53,900,000 52,800,000 51,700,000 52,100,000 51,500,000 49,300,000 45,100,000 46,600,000 43,800,000 41,900,000 43,400,000 40,500,000 36,700,000 36,900,000 37,600,000 36,300,000 35,300,000 34,200,000 
          stock-based compensation and other
        25,000,000 19,000,000 -19,000,000 -10,000,000 20,000,000 8,000,000 18,000,000 18,000,000 19,000,000 12,000,000 17,000,000 33,000,000 23,000,000 9,000,000 13,000,000 15,000,000 5,000,000 16,000,000 11,000,000 12,000,000 12,000,000 10,000,000 7,000,000 -2,000,000 9,000,000 9,000,000 4,000,000 5,000,000 11,000,000 13,000,000 17,000,000 9,000,000 8,000,000 18,000,000 12,000,000 13,000,000 6,000,000 4,000,000 9,000,000 8,000,000 5,000,000 9,000,000 4,000,000 3,000,000 14,000,000 2,300,000 200,000 5,300,000                           
          non-cash special items
         -1,000,000 52,000,000                                                                      
          changes in certain assets and liabilities:
                                                                                  
          changes in deferred income taxes
        -124,000,000 10,000,000 36,000,000 66,000,000 -65,000,000 8,000,000 80,000,000 94,000,000 -47,000,000 -9,000,000 63,000,000 83,000,000 -56,000,000                           27,000,000 -38,000,000 -6,000,000 9,000,000 -2,000,000 18,000,000 43,800,000 31,700,000 25,800,000       20,100,000 61,100,000   -34,600,000 -41,200,000 38,600,000 -23,800,000 -14,800,000 51,700,000   -3,600,000 -11,900,000 28,500,000 -47,000,000 -17,100,000 51,800,000 10,600,000 6,300,000 
          increase in accounts receivable
        -65,000,000 22,000,000 145,000,000 -160,000,000 -11,000,000  -30,000,000 -55,000,000  10,000,000 -11,000,000 -44,000,000  56,000,000 -3,000,000 -112,000,000                                                          
          increase in air traffic liability
        689,000,000 -249,000,000 -189,000,000 -77,000,000 492,000,000 -166,000,000 -211,000,000 -28,000,000 468,000,000 -223,000,000 -215,000,000 -39,000,000 433,000,000 -287,000,000 -311,000,000 135,000,000 480,000,000 -62,000,000 -308,000,000 236,000,000 224,000,000 2,000,000 -60,000,000 21,000,000 210,000,000 -132,000,000 -141,000,000 57,000,000 328,000,000 -162,000,000 -162,000,000 -10,000,000 316,000,000 -152,000,000 37,000,000 369,000,000 -85,000,000 2,000,000 199,000,000 -80,000,000 26,000,000 183,000,000 185,000,000 33,000,000 157,000,000 -83,600,000 13,200,000 164,600,000 -53,400,000 9,100,000 163,000,000 -67,000,000 60,100,000 102,600,000 -30,800,000 -24,400,000 21,900,000 26,900,000 -88,500,000 -71,000,000 58,600,000 109,100,000 -41,600,000 -87,900,000 41,800,000 140,100,000 -47,000,000 -72,800,000 35,300,000 103,900,000 -28,700,000 -55,100,000 35,300,000 90,100,000 
          increase in deferred revenue
        48,000,000 -39,000,000 158,000,000 58,000,000 64,000,000 14,000,000 8,000,000 30,000,000 4,000,000 22,000,000 34,000,000 46,000,000 16,000,000 40,000,000 9,000,000 74,000,000 8,000,000 4,000,000 21,000,000 48,000,000 95,000,000 109,000,000 51,000,000 33,000,000 19,000,000 22,000,000 34,000,000 41,000,000 43,000,000 54,000,000 26,000,000 26,000,000 31,000,000 14,000,000 1,000,000 12,000,000 12,000,000 36,000,000 15,000,000 19,000,000 8,000,000 -1,000,000   9,400,000                             
          other - net
        -163,000,000 164,000,000 19,000,000 28,000,000 -115,000,000 216,000,000 68,000,000 163,000,000 -140,000,000 -9,000,000 -35,000,000 -17,000,000 -206,000,000 -47,000,000 63,000,000 99,000,000 -136,000,000 110,000,000 -59,000,000 31,000,000 -73,000,000 -52,000,000 112,000,000 -51,000,000 -211,000,000            11,000,000 -45,000,000 17,000,000 15,000,000 50,000,000 95,000,000 -119,000,000 152,000,000 -106,000,000 8,600,000 40,500,000 -93,800,000                           
          net cash from operating activities
        421,000,000 185,000,000 229,000,000 376,000,000 459,000,000 274,000,000 318,000,000 580,000,000 292,000,000 -53,000,000 271,000,000 610,000,000 222,000,000 9,000,000 174,000,000 948,000,000 287,000,000 129,000,000 -106,000,000 840,000,000 167,000,000 -350,000,000 -205,000,000 288,000,000 33,000,000 341,000,000 348,000,000 565,000,000 468,000,000 209,000,000 260,000,000 420,000,000 306,000,000 273,000,000 614,000,000 470,000,000 307,000,000 374,000,000 525,000,000 340,000,000 375,000,000 514,000,000 242,000,000 380,000,000 212,000,000 181,600,000 272,400,000 183,300,000 240,100,000 249,900,000 118,800,000 172,800,000 279,100,000 54,500,000 -300,000 179,600,000 110,700,000 15,300,000 23,300,000 36,900,000 69,700,000 34,400,000 108,600,000 106,200,000 203,100,000 64,100,000 60,900,000 151,500,000 152,200,000 85,200,000 91,700,000 89,900,000 93,600,000 -3,300,000 
          capital expenditures
          free cash flows
        421,000,000 185,000,000 229,000,000 376,000,000 459,000,000 274,000,000 318,000,000 580,000,000 292,000,000 -53,000,000 271,000,000 610,000,000 222,000,000 9,000,000 174,000,000 948,000,000 287,000,000 129,000,000 -106,000,000 840,000,000 167,000,000 -350,000,000 -205,000,000 288,000,000 33,000,000 341,000,000 348,000,000 565,000,000 468,000,000 209,000,000 260,000,000 420,000,000 306,000,000 273,000,000 614,000,000 470,000,000 307,000,000 374,000,000 525,000,000 340,000,000 375,000,000 514,000,000 242,000,000 380,000,000 212,000,000 181,600,000 272,400,000 183,300,000 240,100,000 249,900,000 118,800,000 172,800,000 279,100,000 54,500,000 -300,000 179,600,000 110,700,000 15,300,000 23,300,000 36,900,000 69,700,000 34,400,000 108,600,000 106,200,000 203,100,000 64,100,000 60,900,000 151,500,000 152,200,000 85,200,000 91,700,000 89,900,000 93,600,000 -3,300,000 
          cash flows from investing activities:
                                                                                  
          property and equipment additions
                                                                                  
          aircraft, aircraft purchase deposits, and other flight equipment
        -308,000,000                                                                          
          other property and equipment
        -30,000,000 -90,000,000 -91,000,000 -86,000,000 -42,000,000 -91,000,000 -58,000,000 -100,000,000 -44,000,000 -73,000,000 -62,000,000 -83,000,000 -24,000,000 -88,000,000 -49,000,000 3,000,000 -57,000,000 -38,000,000 -26,000,000 -21,000,000 -13,000,000 7,000,000 -27,000,000 -40,000,000 -27,000,000 -46,000,000 -38,000,000 -45,000,000 -33,000,000 -40,000,000 -33,000,000 -25,000,000 -71,000,000 -29,000,000 -27,000,000 -36,000,000 -25,000,000 -28,000,000 -13,000,000 -18,000,000 -13,000,000 -13,000,000 -11,000,000 -6,000,000 -7,000,000 -9,600,000 -4,800,000 -14,900,000    -10,100,000 -7,200,000 -6,700,000 -13,400,000 -7,400,000 -10,100,000 -9,700,000 -5,100,000 -12,900,000 -11,400,000 -9,800,000 -15,600,000 -14,200,000   -20,100,000 -23,800,000 -1,000,000 -7,600,000 -8,800,000 -2,500,000   
          purchases of marketable securities
        -332,000,000 -240,000,000 -395,000,000 -374,000,000 -470,000,000 -404,000,000 -265,000,000 -150,000,000 -13,000,000 -17,000,000 -130,000,000 -188,000,000 -201,000,000 -127,000,000 -260,000,000 -858,000,000 -552,000,000 -888,000,000 -889,000,000 -1,281,000,000 -1,243,000,000 -870,000,000 -1,088,000,000 -477,000,000 -527,000,000 -364,000,000 -561,000,000 -534,000,000 -351,000,000 -162,000,000 -143,000,000 -291,000,000 -238,000,000 -398,000,000 -453,000,000 -557,000,000 -165,000,000 -252,000,000 -358,000,000 -165,000,000 -308,000,000 -403,000,000 -305,000,000 -440,000,000 -280,000,000 -273,600,000 -297,100,000 -240,100,000    -218,600,000 -294,100,000 -284,000,000 -174,800,000 -252,800,000 -354,500,000 -160,500,000 -157,600,000 -134,300,000 -214,900,000 -259,200,000 -286,100,000 -183,300,000   -214,900,000 -252,300,000 -231,000,000 -108,300,000 -275,800,000 -310,400,000 -471,300,000 -127,000,000 
          sales and maturities of marketable securities
        504,000,000 242,000,000 282,000,000 429,000,000 336,000,000 608,000,000 865,000,000 155,000,000 133,000,000 346,000,000 232,000,000 186,000,000 388,000,000 521,000,000 408,000,000 443,000,000 880,000,000 926,000,000 1,108,000,000 829,000,000 732,000,000 798,000,000 482,000,000 527,000,000 511,000,000 446,000,000 565,000,000 388,000,000 275,000,000 259,000,000 383,000,000 173,000,000 301,000,000 528,000,000 256,000,000 285,000,000 281,000,000 217,000,000 140,000,000 142,000,000 417,000,000 259,000,000 227,000,000 226,000,000 239,000,000 271,100,000 242,300,000 188,100,000 238,200,000 145,000,000 314,000,000 200,400,000 185,200,000 261,000,000 203,200,000 160,800,000 209,100,000 151,900,000 180,900,000 136,100,000 87,500,000 175,100,000 479,700,000 211,400,000 179,300,000 450,700,000 386,700,000 262,400,000 140,400,000 146,400,000 84,700,000 285,400,000 293,900,000 457,400,000 
          other investing activities
        -3,000,000 -4,000,000 86,000,000 82,000,000 -9,000,000 27,000,000 156,000,000 -61,000,000 93,000,000 -12,000,000 -76,000,000 -27,000,000 -3,000,000 -4,000,000 -1,000,000 -1,000,000 -3,000,000 -4,000,000 -5,000,000 -31,000,000 -1,000,000 2,000,000 8,000,000  12,000,000 20,000,000 5,000,000  26,000,000 2,000,000 8,000,000 28,000,000                                         
          net cash from investing activities
        -169,000,000 -627,000,000 -249,000,000 -366,000,000 -381,000,000 -198,000,000 -301,000,000 -453,000,000 318,000,000 -154,000,000 -331,000,000 -539,000,000 60,000,000 -330,000,000 -167,000,000 -760,000,000 39,000,000 -65,000,000 127,000,000 -527,000,000 -543,000,000 174,000,000 -643,000,000 3,000,000 -127,000,000 -83,000,000 -178,000,000 -344,000,000 -186,000,000 -298,000,000 135,000,000 -304,000,000 -164,000,000 -171,000,000 -483,000,000 -488,000,000 -51,000,000 -254,000,000 -336,000,000 -133,000,000 -173,000,000 -421,000,000 -164,000,000 -361,000,000 -151,000,000 -102,800,000 -237,300,000 -173,400,000    -59,100,000 -192,000,000 -47,900,000 -64,100,000 -130,700,000 -226,800,000 -235,800,000 25,500,000 -118,100,000 -267,100,000 -221,600,000 21,000,000 -144,800,000   6,000,000 -190,300,000 -215,900,000 -132,800,000 -301,100,000 -97,200,000 -311,800,000 229,000,000 
          cash flows from financing activities:
                                                                                  
          proceeds from issuance of long-term debt, net of issuance costs
        110,000,000 430,000,000 210,000,000   1,966,000,000 65,000,000 130,000,000 149,000,000 98,000,000                                                                 
          long-term debt payments
        -340,000,000 -130,000,000 -153,000,000 -80,000,000 -156,000,000 -1,636,000,000 -130,000,000 -47,000,000 -102,000,000 -40,000,000 -93,000,000 -53,000,000 -96,000,000 -52,000,000 -94,000,000 -69,000,000 -170,000,000 -112,000,000 -541,000,000 -566,000,000 -115,000,000 -327,000,000 -113,000,000 -65,000,000 -60,000,000 -306,000,000 -220,000,000 -139,000,000 -393,000,000 -263,000,000 -286,000,000 -138,000,000 -120,000,000 -106,000,000 -58,000,000 -101,000,000 -36,000,000 -21,000,000 -36,000,000 -35,000,000 -23,000,000 -35,000,000 -37,000,000 -21,000,000 -88,000,000 -74,500,000 -106,300,000 -59,100,000    -100,400,000   -34,200,000 -60,000,000   -124,300,000 -95,000,000 -66,800,000 -57,100,000  -35,300,000     -19,900,000 -9,300,000     
          common stock repurchases
        -193,000,000 -30,000,000 -5,000,000 -430,000,000 -105,000,000 -249,000,000 -14,000,000 -29,000,000 -20,000,000 -67,000,000 -13,000,000 -39,000,000 -18,000,000         -31,000,000 -22,000,000 -28,000,000 -12,000,000 -13,000,000 -13,000,000 -12,000,000 -13,000,000 -12,000,000 -28,000,000   -66,000,000 -127,000,000 -119,000,000 -160,000,000 -102,000,000 -30,000,000 -32,000,000 -19,000,000 -25,400,000 -17,500,000 -8,800,000                           
          other financing activities
        -5,000,000 21,000,000 2,000,000 34,000,000 25,000,000 31,000,000 -1,000,000 38,000,000 -32,000,000 -150,000,000 -30,000,000   23,000,000 4,000,000 31,000,000 2,000,000 23,000,000 -3,000,000 29,000,000 8,000,000 39,000,000 -8,000,000 32,000,000 -5,000,000 3,000,000 14,000,000 2,000,000 24,000,000 -4,000,000 18,000,000 15,000,000 15,000,000 1,000,000 11,000,000 5,000,000 4,000,000 13,000,000 16,000,000 1,000,000 14,000,000 16,000,000 -6,000,000 8,000,000 4,700,000 16,400,000 200,000    4,600,000 300,000 -13,900,000                     
          net cash from financing activities
        -428,000,000 291,000,000 54,000,000 -308,000,000 -236,000,000 112,000,000 -80,000,000 92,000,000 -5,000,000 -159,000,000 177,000,000 -51,000,000 -114,000,000 -29,000,000 -90,000,000 -38,000,000 -168,000,000 -89,000,000 -544,000,000 -363,000,000 82,000,000 -305,000,000 1,195,000,000 407,000,000 684,000,000 -275,000,000 -175,000,000 -192,000,000 -171,000,000 19,000,000 -319,000,000 -191,000,000 -156,000,000  -116,000,000 -127,000,000  -117,000,000 -184,000,000 -164,000,000 -208,000,000 -149,000,000 -68,000,000 -57,000,000 -88,000,000 -86,700,000 -47,900,000 -63,900,000    -92,600,000 -96,700,000 -53,100,000 58,600,000 -42,200,000 42,300,000 174,500,000 -25,000,000 161,400,000 164,600,000 194,800,000 -5,600,000 -39,300,000 -4,400,000 142,700,000 11,500,000 50,600,000 63,700,000 114,500,000 256,300,000 2,800,000 3,300,000 -7,600,000 
          net decrease in cash and cash equivalents
        -176,000,000                                           -38,000,000 -27,000,000 -7,900,000 -12,800,000 -54,000,000                           
          cash, cash equivalents, and restricted cash at beginning of period
        684,000,000 1,257,000,000 308,000,000 369,000,000  494,000,000  1,386,000,000                                                      
          cash, cash equivalents, and restricted cash at end of period
        508,000,000                                                                          
          supplemental disclosure:
                                                                                  
          cash paid during the period for:
                                                                                  
          interest, net of amount capitalized
        70,000,000 46,000,000 69,000,000 41,000,000 67,000,000                                                                      
          non-cash transactions:
                                                                                  
          right-of-use assets acquired through operating leases
        78,000,000 6,000,000 93,000,000 12,000,000 62,000,000                                                                      
          property and equipment acquired through the issuance of debt
         46,000,000 23,000,000                                                                      
          reconciliation of cash, cash equivalents, and restricted cash:
                                                                                  
          cash and cash equivalents
        451,000,000 -151,000,000 28,000,000 -294,000,000 1,044,000,000               -51,000,000 1,076,000,000 -485,000,000 346,000,000 698,000,000 811,000,000 -16,000,000 -7,000,000 29,000,000 215,000,000 -69,000,000 72,000,000 -75,000,000 177,000,000                                          
          restricted cash
        27,000,000 28,000,000                                                                      
          restricted cash included in other noncurrent assets
        30,000,000 6,000,000 -4,000,000 27,000,000                                                                      
          total cash, cash equivalents, and restricted cash at end of period
        508,000,000                                                                          
          net income
         21,000,000 73,000,000   71,000,000 236,000,000   -2,000,000 139,000,000   22,000,000 40,000,000   18,000,000 194,000,000   -447,000,000 -431,000,000 -214,000,000 -232,000,000 181,000,000 322,000,000 262,000,000 4,000,000 23,000,000 217,000,000 193,000,000 4,000,000 266,000,000 296,000,000 99,000,000 256,000,000 260,000,000 184,000,000 274,000,000 234,000,000 149,000,000 94,000,000 104,000,000 37,000,000 163,400,000 67,500,000 40,800,000 77,500,000 28,800,000 74,200,000 122,400,000 58,600,000 5,300,000 24,100,000 87,600,000   -75,200,000 -87,900,000   3,400,000 85,800,000       -33,000,000    
          adjustments to reconcile net income to net cash from operating activities:
                                                                                  
          aircraft and aircraft purchase deposits
         -463,000,000 -77,000,000 -381,000,000 -142,000,000 -285,000,000 -152,000,000 -411,000,000 31,000,000 -386,000,000 -255,000,000 -364,000,000 -50,000,000 -584,000,000 -179,000,000 -302,000,000 -207,000,000 -16,000,000 -22,000,000 -27,000,000 -3,000,000 -3,000,000 -3,000,000 -1,000,000 -57,000,000 -70,000,000 -114,000,000 -119,000,000 -53,000,000 -337,000,000 -78,000,000 -136,000,000 -135,000,000 -275,000,000 -244,000,000 -160,000,000 -140,000,000 -177,000,000 -91,000,000 -73,000,000 -245,000,000 -245,000,000 -65,000,000 -143,000,000 -90,000,000 -69,200,000 -147,500,000 -80,900,000    -64,000,000 -40,300,000 -5,000,000 -72,200,000 -25,900,000 -69,600,000 -199,500,000 30,200,000 -104,900,000 -125,000,000 -117,400,000 -138,800,000 -187,200,000   -135,300,000 -191,500,000 -104,000,000 -161,000,000 -91,400,000    
          other flight equipment
         -72,000,000 -54,000,000 -36,000,000 -54,000,000 -53,000,000 -55,000,000 -19,000,000 -44,000,000 -44,000,000 -40,000,000 -63,000,000 -50,000,000 -52,000,000 -87,000,000 -45,000,000 -24,000,000 -48,000,000 -40,000,000 -27,000,000 -11,000,000 -6,000,000 -6,000,000 -8,000,000 -35,000,000 -53,000,000 -42,000,000 -54,000,000 -29,000,000 -29,000,000 -20,000,000 -27,000,000 -29,000,000 -25,000,000 -25,000,000 -20,000,000 -4,000,000 -16,000,000 -15,000,000 -18,000,000 -22,000,000 -21,000,000 -17,000,000 -6,000,000 -6,000,000 -6,100,000 -4,400,000 -2,300,000    32,000,000 -38,400,000 -14,200,000 -5,500,000 -5,500,000 -2,600,000 -17,000,000 -27,400,000 -8,600,000 -3,600,000 -16,900,000 -20,700,000 15,300,000   -10,200,000 -1,000,000 -22,200,000 -4,400,000 -7,000,000   -1,900,000 
          acquisition of hawaiian, net of cash acquired
                                                                                 
          supplier proceeds
             162,000,000                                                                  
          net increase in cash and cash equivalents
         -151,000,000 34,000,000 -298,000,000 -158,000,000 188,000,000 -63,000,000 219,000,000 605,000,000  117,000,000 20,000,000 168,000,000                     -54,000,000 15,000,000 -145,000,000 1,737,000,000 3,000,000 5,000,000 43,000,000 -6,000,000 -56,000,000                                 
          cash paid during the year for:
                                                                                  
          income taxes, net of refunds received
                                 29,000,000                                                 
          operating leases converted to finance leases
                                                                                  
          cash, cash equivalents, and restricted cash at end of the period
          34,000,000 -298,000,000 1,099,000,000  -63,000,000 219,000,000 913,000,000  117,000,000 20,000,000 537,000,000  -83,000,000 150,000,000 652,000,000  -523,000,000 -50,000,000 1,092,000,000  347,000,000 698,000,000 822,000,000  -5,000,000 29,000,000 225,000,000  76,000,000 -75,000,000 183,000,000                                          
          total cash, cash equivalents, and restricted cash at end of the period
          34,000,000 -298,000,000 1,099,000,000               -50,000,000 1,092,000,000 -481,000,000 347,000,000 698,000,000 822,000,000 -17,000,000 -5,000,000 29,000,000 225,000,000 -70,000,000 76,000,000 -75,000,000 183,000,000                                          
          special items
                                                                                  
          decrease in accounts receivable
                                                                                  
          federal income tax refund
                     35,000,000                                                            
          special items - operating
                                                                                  
          fleet transition
                                                                                  
          special items - fleet transition
                23,000,000                                                                  
          special items - labor and other
                                                                                  
          total property and equipment additions
                -57,000,000 -503,000,000 -357,000,000 -510,000,000 -124,000,000                           -109,000,000 -280,000,000 -279,000,000 -93,000,000 -155,000,000 -103,000,000 -84,900,000 -156,700,000 -98,100,000    -42,100,000 -85,900,000 -25,900,000 -91,100,000 -38,800,000 -82,300,000 -226,200,000 -2,300,000 -126,400,000 -140,000,000 -144,100,000             
          special items - fleet transition and other
                 27,000,000 157,000,000 174,000,000 13,000,000                                                              
          special items - labor and related
                 51,000,000                                                              
          special items - restructuring charges
                         2,000,000 -23,000,000 11,000,000 -102,000,000                                                     
          pension contribution
                                                   -11,800,000 -11,800,000 -11,800,000                           
          proceeds from disposition of assets
                                                        7,500,000 11,000,000 1,400,000 1,400,000 1,900,000 1,400,000 1,600,000 900,000 1,900,000 2,300,000 3,300,000 900,000 5,400,000 3,400,000 5,900,000 52,200,000 1,900,000 3,000,000 300,000 100,000 200,000 1,100,000 2,000,000 1,400,000 2,000,000 
          special items - impairment charges and other
                         -6,000,000 -9,000,000 -4,000,000 18,000,000 277,000,000 121,000,000 69,000,000 160,000,000                                                  
          cash dividend paid
                                                                                  
          cash, cash equivalents, and restricted cash at beginning of year
                             232,000,000 114,000,000 197,000,000                                          
          cash, cash equivalents, and restricted cash at end of year
                                                                                  
          special items - restructuring
                                                                                  
          changes in deferred tax provision
                       44,000,000 -58,000,000 9,000,000 62,000,000 72,000,000 -39,000,000 -80,000,000 -122,000,000 -54,000,000 -44,000,000 22,000,000 125,000,000 60,000,000 2,000,000 24,000,000 55,000,000 65,000,000 2,000,000 85,000,000 84,000,000 48,000,000 6,000,000 49,000,000 -8,000,000                                    
          property and equipment additions:
                                                                                  
          total property and equipment additions, including capitalized interest
                      -315,000,000 -344,000,000 -288,000,000  -88,000,000 -75,000,000 -27,000,000  -36,000,000 -49,000,000 -119,000,000  -194,000,000 -218,000,000 -115,000,000  -131,000,000 -188,000,000 -235,000,000 -329,000,000 -296,000,000 -216,000,000 -169,000,000 -221,000,000 -119,000,000                                    
          proceeds from issuance of debt
                          174,000,000 189,000,000  1,316,000,000 440,000,000 825,000,000  102,000,000 254,000,000                                              
          net increase in cash, cash equivalents, and restricted cash
                      -83,000,000 150,000,000 158,000,000 -25,000,000 -523,000,000 -50,000,000 -294,000,000 -481,000,000 347,000,000 698,000,000 590,000,000 -17,000,000 -5,000,000 29,000,000 111,000,000 -70,000,000 76,000,000 -75,000,000 -14,000,000                                          
          adjustments to reconcile net gain to net cash from operating activities:
                                                                                  
          special items - fleet transition and related charges
                       146,000,000 75,000,000                                                          
          dividends paid
                              -45,000,000  -43,000,000 -43,000,000 -43,000,000  -39,000,000 -40,000,000 -39,000,000 -37,000,000 -37,000,000 -37,000,000 -34,000,000 -34,000,000 -34,000,000 -26,000,000 -26,000,000 -26,000,000 -17,000,000                                
          interest
                           11,000,000 50,000,000  13,000,000 16,000,000 9,000,000  14,000,000 16,000,000 18,000,000  21,000,000 15,000,000 24,000,000 26,000,000 16,000,000 26,000,000 4,000,000 8,000,000 1,000,000 1,000,000 7,000,000 11,000,000 6,000,000 15,000,000 15,600,000 9,000,000 15,600,000 26,300,000 14,600,000 25,100,000 33,500,000 20,600,000 29,500,000 17,000,000 29,300,000 19,600,000 28,700,000 18,700,000 21,200,000 16,800,000 14,300,000 16,300,000 15,200,000 17,200,000 9,900,000 13,700,000 10,100,000 13,100,000 11,300,000 16,200,000 9,500,000 16,200,000 9,800,000 
          income taxes
                                         115,000,000         6,000,000 6,000,000 51,800,000 -2,500,000 2,100,000   -100,000   100,000   -400,000 -4,100,000 3,900,000 8,500,000 -900,000   3,300,000 7,000,000   3,300,000 -2,900,000 400,000 700,000 
          reconciliation of cash, cash equivalents, and restricted cash at end of the period
                                                                                  
          restricted cash included in prepaid expenses, assets held-for-sale, and other current assets
                           1,000,000 16,000,000                                                      
          payroll support program grant wage offset
                              -398,000,000                                                    
          payroll support program grant funding
                              30,000,000                                                    
          restricted cash included in prepaid expenses, assets held-for-sale and other current assets
                                                                                  
          restricted cash included in prepaid expenses and other current assets
                               11,000,000  2,000,000 10,000,000  4,000,000 6,000,000                                          
          changes in pension and other postretirement benefits
                                                                                  
          proceeds from disposition of assets and changes in restricted deposits
                                            2,000,000 2,000,000 1,000,000   2,000,000 7,000,000 8,000,000 -7,000,000 -100,000 600,000 300,000                           
          other—net
                                  -25,000,000 42,000,000 -24,000,000 133,000,000 -20,000,000 40,000,000 -144,000,000 -70,000,000 81,000,000 -150,000,000                                       
          acquisition of virgin america, net of cash acquired
                                                                                  
          net cash provided (used) by financing activities
                                                                                  
          cash and cash equivalents at beginning of year
                                         328,000,000 73,000,000 107,000,000 80,000,000 122,000,000 102,200,000 89,500,000 164,200,000 283,100,000 204,300,000 230,700,000   73,600,000    54,300,000 
          cash and cash equivalents at end of the period
                                         -54,000,000 15,000,000 183,000,000 1,737,000,000 3,000,000 78,000,000 43,000,000 -6,000,000 51,000,000 90,000,000 -38,000,000 95,000,000 -7,900,000 -12,800,000 48,200,000                           
          income taxes paid
                                           2,000,000 139,000,000 169,000,000 13,000,000 154,000,000 173,000,000 -65,000,000                                 
          net increase/(decrease) in cash and cash equivalents
                                                  10,000,000                                
          special mileage plan accounting adjustment
                                                                                  
          changes in fair values of open fuel hedge contracts
                                                   15,000,000 24,000,000 -17,200,000 70,200,000 -24,900,000       -38,700,000 -2,000,000   70,400,000 206,500,000 -182,800,000 -9,900,000 -37,400,000 -1,700,000   12,900,000 58,600,000 8,900,000 3,700,000  -20,700,000 -8,600,000 -97,300,000 
          increase in other current liabilities
                                                              1,000,000 -11,200,000     -13,900,000 19,800,000 44,800,000 -20,200,000 -1,700,000 3,100,000 -1,000,000 8,900,000 17,100,000 9,700,000 1,300,000 800,000 -22,300,000 8,700,000 
          increase in other long-term liabilities
                                                   -6,000,000 1,000,000 800,000 -12,700,000 17,600,000                           
          increase in pension and other medical liabilities
                                                                                  
          assets constructed for others
                                                     -15,300,000 -26,400,000 -23,600,000                           
          proceeds from issuance of long-term debt
                                                              83,400,000 29,000,000 98,600,000 64,000,000 97,900,000 255,500,000 238,900,000 291,600,000 85,800,000 32,700,000 163,400,000 163,400,000 58,000,000 64,600,000 122,400,000 73,800,000   
          proceeds from sale-leaseback transactions
                                                                               
          proceeds and tax benefit from issuance of common stock
                                                   2,000,000 11,000,000 8,500,000 10,200,000 3,800,000 1,800,000 6,600,000 8,300,000 8,100,000   9,400,000 800,000   1,400,000 900,000               
          terminal 6 at lax reimbursement
                                                                                  
          cash and cash equivalents at end of year
                                                                                  
          cash paid (received) during the period for:
                                                                                  
          assets constructed related to terminal 6 at lax
                                                     -24,200,000 -25,100,000 50,900,000                           
          decrease in deferred revenue
                                                    -2,000,000   -4,000,000                           
          fleet transition expenses
                                                                                  
          cash paid (refunded) during the period for:
                                                                                  
          adjustments to reconcile net income to net cash
                                                                                  
          fleet transition costs
                                                        2,000,000                         
          stock-based compensation
                                                        2,200,000 2,700,000 4,600,000 1,900,000 3,700,000 5,000,000 1,700,000 2,600,000 2,200,000 5,400,000 2,600,000 5,100,000 2,500,000 3,200,000 2,700,000 3,100,000 2,900,000 2,500,000 2,400,000 1,900,000 2,000,000 1,900,000  500,000 300,000 300,000 
          increase in other assets and liabilities - net
                                                                                  
          construction of terminal 6 at lax
                                                                                  
          restricted deposits and other
                                                        800,000   -200,000 900,000 -400,000 -3,000,000 -800,000 -1,000,000 -3,300,000 1,200,000 5,600,000 300,000 1,200,000 -900,000 7,300,000   -3,200,000 15,600,000 1,800,000 1,900,000 -4,000,000 -4,600,000 -100,000 1,100,000 
          purchase of treasury stock
                                                           -4,900,000 -15,800,000 -10,500,000 -12,000,000   -8,300,000 -40,600,000 -57,800,000            
          net change in cash and cash equivalents
                                                           21,100,000 -9,600,000 -46,500,000 -5,800,000 6,700,000 -73,800,000 -46,000,000 23,800,000 80,200,000 -32,800,000 7,600,000 124,000,000 -77,900,000   78,400,000 11,800,000 66,900,000 46,900,000 -4,500,000 -214,900,000 218,100,000 
          cash and cash equivalents at the end of the period
                                                                                  
          supplemental disclosure
                                                                                  
          relocation credit and assets constructed on account related to terminal 6 at lax
                                                                                  
          decrease in other assets and liabilities – net
                                                                                  
          increase in receivable related to terminal 6 at lax airport
                                                                                  
          cash and cash equivalents at end of period
                                                         6,800,000 60,200,000 21,100,000 -9,600,000 117,700,000  6,700,000 -73,800,000 237,100,000  80,200,000 -32,800,000 211,900,000  -77,900,000 -2,800,000 161,000,000  11,800,000 140,500,000  -4,500,000 -241,200,000 272,400,000 
          supplemental disclosure of cash paid during the period for:
                                                                                  
          fleet transition costs – crj-700
                                                          10,100,000                        
          provided by operating activities:
                                                                                  
          non-cash impact of pilot contract transition costs
                                                                                
          restructuring and fleet transition costs
                                                                                  
          changes in other assets and liabilities - net
                                                           47,900,000                       
          supplemental disclosure of cash paid (received) during the period for:
                                                                                  
          see accompanying notes to condensed consolidated financial statements.
                                                                                  
          fleet transition costs - q200
                                                                 4,800,000                 
          changes in other assets and liabilities-net
                                                             -114,600,000    -55,400,000                 
          proceeds from sale-leaseback transaction
                                                                 230,000,000                 
          long-term debt payments, including line of credit
                                                             -39,800,000    -121,500,000                 
          proceeds from issuance of common stock
                                                             11,100,000    2,000,000    900,000  900,000 600,000 3,700,000  4,000,000 16,500,000 1,400,000  11,700,000 1,200,000 1,000,000 
          restructuring charges
                                                                  9,200,000            -300,000 -1,400,000   
          fleet transition costs, including impairment charge
                                                              -1,200,000   7,200,000 22,900,000 35,300,000 5,800,000  3,900,000 3,700,000 3,000,000         
          increase in receivables - net
                                                              16,500,000 28,200,000    22,000,000 -6,200,000 -20,800,000  32,300,000     -17,600,000 -15,300,000     
          increase in prepaid expenses and other current assets
                                                              2,200,000    33,500,000 -15,000,000 -12,100,000 -15,000,000 27,400,000 -15,300,000   22,300,000 8,100,000 -21,300,000 -20,400,000  -8,400,000 -2,700,000 -17,300,000 
          increase in deferred revenue and other-net
                                                                  42,600,000 -34,100,000   57,200,000 10,500,000   40,700,000    53,300,000 200,000 18,100,000 -25,100,000 
          supplemental disclosure of cash paid (refunded) during the year for:
                                                                                  
          see accompanying notes to consolidated financial statements.
                                                                                  
          decrease in deferred revenue and other-net
                                                               11,500,000      -47,400,000       5,500,000 -40,100,000     
          changes in prepaid expenses and other current assets
                                                                                  
          adjustments to reconcile net loss to net cash
                                                                                  
          gain on sale of assets
                                                                  -1,000,000 -500,000          -100,000     
          decrease in receivables—net
                                                                                  
          noncash investing and financing activities:
                                                                                  
          conversion of senior convertible notes to equity
                                                                                
          debt assumed in purchase of md-80 aircraft
                                                                                 
          decrease in other current liabilities
                                                                                  
          tax benefit from stock option exercises
                                                                      200,000 -100,000 -1,000,000 500,000 -1,100,000 -500,000       
          cumulative effect of accounting change, net of tax
                                                                                  
          restructuring charges and adjustments
                                                                          -7,600,000 28,600,000       
          loss on sale of assets
                                                                      -700,000 -2,500,000   -500,000 -100,000   200,000 1,700,000 -300,000 
          aircraft deposits returned
                                                                              100,000 300,000 7,200,000 
          long-term debt and capital lease payments
                                                                          -161,500,000    -18,800,000 -8,900,000 -17,900,000 -8,600,000 
          proceeds from issuance of common stock, net of related fees
                                                                                  
          credit received for flight deposits deferred in other liabilities
                                                                                
          net change in discounts and premiums on long-term debt
                                                                                  
          securities lending collateral
                                                                         1,700,000 100,000        
          securities lending obligation
                                                                          -100,000        
          impairment of aircraft and related spare parts
                                                                                  
          amortization of airframe and engine overhauls
                                                                                  
          capitalized overhauls
                                                                                  
          assets acquired under long-term debt and capital leases
                                                                                  
          cumulative effect of accounting change, net of tax effect
                                                                               90,400,000 
          decrease in receivables - net
                                                                              5,900,000    
          cash and cash equivalents at beginning of period
                                                                                 
          supplemental disclosure of cash paid (refunded) during the period for:
                                                                                  
          impairment of aircraft
                                                                            131,100,000     
          amortization of deferred stock-based compensation
                                                                                  
          changes in derivative fair values
                                                                                  
          decrease in prepaid expenses and other current assets
                                                                                  
          increase in receivables — net
                                                                                -6,200,000 -20,200,000 
          aircraft purchase deposits
                                                                                -111,600,000 -41,200,000 
          aircraft and other flight equipment
                                                                                  
          restructuring charges, primarily write-off of oakland leasehold improvements
                                                                                 7,400,000 
          impairment of f-28 aircraft and spare engines
                                                                                  
          aircraft
                                                                                 -57,400,000 
          other property
                                                                                 -11,200,000 
          assets acquired under capital leases
                                                                                  
          adjustments to reconcile net income to net cash provided by operating activities:
                                                                                  
          cumulative effect of accounting change
                                                                                  
          impairment of aircraft and spare engines
                                                                                  
          assets acquired under long-term debt