7Baggers

SkyWest, Inc
(NASDAQ:SKYW) 

SKYW stock logo

SkyWest, Inc., through its subsidiaries, operates a regional airline in the United States. The company operates through two segment, SkyWest Airlines and SkyWest Leasing. It also leases regional jet aircraft and spare engines to third parties. As of December 31, 2020, the company's fleet consisted o...

Founded: 1972
Full Time Employees: 13,700
Sector: Industrials
Industry: Airlines

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At a glance:
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Quarterly
Annual
    Unit: USD2025-09-30 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 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 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 2013-09-30 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 2009-09-30 2009-06-30 2009-03-31 2008-09-30 2008-06-30 2008-03-31 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 2004-09-30 2004-06-30 2004-03-31 2003-12-31 2003-09-30 2003-06-30 2003-03-31 2002-09-30 
                                                                                       
      operating revenues:
                                                                                       
      flying agreements
    1,011,284,000 987,511,000 915,994,000 912,845,000 883,494,000 838,170,000 778,289,000 728,267,000 741,898,000 700,394,000 663,838,000 654,486,000 763,514,000 773,774,000 708,063,000 751,834,000 719,084,000 632,967,000 511,191,000 569,889,000 445,048,000 336,370,000 709,494,000 725,092,000 738,838,000 725,335,000 700,001,000 791,861,000 816,057,000 793,637,000 767,964,000                                                     
      lease, airport services and other
    38,745,000 47,716,000 32,461,000 31,557,000 29,292,000 28,948,000 25,325,000 23,520,000 24,273,000 25,249,000 27,993,000 26,759,000 25,929,000 25,311,000 27,089,000 25,329,000 25,699,000 24,023,000 23,364,000 19,748,000 12,445,000 13,669,000 20,442,000                                                             
      total operating revenues
    1,050,029,000 1,035,227,000 948,455,000 944,402,000 912,786,000 867,118,000 803,614,000 751,787,000 766,171,000 725,643,000 691,831,000 681,245,000 789,443,000 799,085,000 735,152,000 777,163,000 744,783,000 656,990,000 534,555,000 589,637,000 457,493,000 350,039,000 729,936,000 743,591,000 760,295,000 744,383,000 723,694,000 803,489,000 829,275,000 805,515,000 783,400,000 797,158,000 831,936,000 809,759,000 765,415,000 758,016,000 799,776,000 801,338,000 762,075,000 752,744,000 794,004,000 788,417,000 760,398,000 834,633,000 816,574,000 772,386,000 850,740,000 839,130,000 803,487,000 865,259,000 937,214,000 921,173,000 955,425,000 933,697,000 865,951,000 686,858,000 649,759,000 632,243,000 637,748,000 698,823,000 672,642,000          742,855,000    340,292,000         
      yoy
    15.04% 19.39% 18.02% 25.62% 19.14% 19.50% 16.16% 10.35% -2.95% -9.19% -5.89% -12.34% 6.00% 21.63% 37.53% 31.80% 62.80% 87.69% -26.77% -20.70% -39.83% -52.98% 0.86% -7.45% -8.32% -7.59% -7.62% 0.79% -0.32% -0.52% 2.35% 5.16% 4.02% 1.05% 0.44% 0.70% 0.73% 1.64% 0.22% -9.81% -2.76% 2.08% -10.62% -0.54% 1.63% -10.73% -9.23% -8.91% -15.90% -7.33% 8.23% 34.11% 47.04% 47.68% 35.78% -1.71% -3.40%              118.30%             
      qoq
    1.43% 9.15% 0.43% 3.46% 5.27% 7.90% 6.89% -1.88% 5.59% 4.89% 1.55% -13.71% -1.21% 8.70% -5.41% 4.35% 13.36% 22.90% -9.34% 28.88% 30.70% -52.05% -1.84% -2.20% 2.14% 2.86% -9.93% -3.11% 2.95% 2.82% -1.73% -4.18% 2.74% 5.79% 0.98% -5.22% -0.19% 5.15% 1.24% -5.20% 0.71% 3.68% -8.89% 2.21% 5.72% -9.21% 1.38% 4.44% -7.14% -7.68% 1.74% -3.59% 2.33% 7.82% 26.07% 5.71% 2.77% -0.86% -8.74% 3.89%                        
      operating expenses:
                                                                                       
      salaries, wages and benefits
    391,634,000 390,243,000 377,311,000 380,493,000 377,435,000 355,005,000 350,999,000 331,956,000 333,017,000 322,441,000 335,201,000 315,204,000 307,727,000 288,562,000 300,058,000 267,796,000 265,603,000 233,423,000 219,842,000 212,214,000 194,516,000 170,218,000 249,160,000 248,978,000 251,414,000 243,766,000 257,588,000 299,743,000 301,378,000 293,677,000 306,719,000 296,261,000 303,997,000 295,929,000 300,039,000 295,637,000 305,958,000 304,228,000 305,557,000 297,261,000 304,633,000 298,573,000 302,845,000 315,766,000 310,844,000 317,642,000 306,887,000 300,342,000 297,396,000 297,106,000 290,676,000 290,814,000 288,401,000 290,126,000 286,148,000 185,362,000 173,716,000 178,563,000 175,552,000 173,862,000 176,872,000                       
      aircraft maintenance, materials and repairs
    247,978,000 238,885,000 209,100,000 202,308,000 181,652,000 183,267,000 145,415,000 190,271,000 178,465,000 162,491,000 142,226,000 137,679,000 183,182,000 174,883,000 148,413,000 213,302,000 209,795,000 190,879,000 203,827,000 187,335,000 150,148,000 121,289,000 160,216,000 137,741,000 133,521,000 124,789,000 118,262,000 132,594,000 142,285,000 139,774,000 141,606,000 145,996,000 148,787,000 152,356,000 132,325,000 144,584,000 143,573,000 142,289,000 138,859,000 142,891,000 147,396,000 156,319,000 158,257,000 159,920,000 171,722,000 178,262,000 176,822,000 171,528,000 167,156,000 163,825,000 167,150,000 179,636,000 189,762,000 176,399,000 163,174,000 120,863,000 111,366,000 106,755,000 119,055,000 116,390,000 92,158,000                       
      depreciation and amortization
    92,474,000 90,150,000 89,446,000 94,534,000 96,662,000 96,814,000 95,870,000 95,237,000 96,560,000 97,169,000 94,149,000 97,125,000 97,433,000 97,249,000 102,745,000 111,109,000 109,597,000 109,895,000 109,597,000 110,146,000 121,467,000 131,638,000 111,708,000 95,169,000 92,795,000 90,148,000 89,986,000 88,203,000 86,088,000 82,714,000 77,585,000 77,353,000 74,095,000 71,206,000 70,114,000 75,538,000 71,743,000 69,887,000 67,801,000 67,554,000 66,603,000 64,659,000 65,691,000 65,822,000 64,252,000 62,316,000 61,135,000 61,174,000 61,001,000 62,703,000 64,182,000 64,315,000 63,393,000 63,697,000 63,193,000 58,771,000 58,383,000 58,146,000 55,461,000 54,676,000 54,584,000 55,141,000 54,931,000 54,616,000 53,169,000 52,175,000 50,278,000 -139,981,115 47,420,000 47,262,000 45,489,000 -70,122,725 27,596,000 21,611,000 21,032,000 19,221,000 19,000,000 19,227,000 13,628,500 19,179,000 18,977,000 16,358,000 14,483,000 
      airport-related expenses
    31,876,000 27,116,000 27,823,000 24,771,000 22,642,000 17,535,000 20,888,000 18,992,000 18,398,000 16,955,000 18,295,000 17,353,000 17,501,000 17,490,000 19,205,000 32,212,000 25,992,000 22,038,000 24,448,000 23,694,000 18,003,000 21,550,000 30,640,000 29,600,000 27,808,000 30,782,000 30,647,000 28,753,000 25,655,000 25,890,000 29,307,000                                                     
      aircraft fuel
    34,216,000 27,459,000 24,488,000 22,193,000 22,724,000 21,328,000 21,164,000 23,340,000 23,330,000 18,279,000 20,964,000 23,367,000 28,179,000 31,820,000 25,090,000 29,435,000 32,561,000 25,867,000 19,194,000 15,864,000 13,641,000 6,821,000 25,413,000 31,545,000 31,063,000 30,851,000 25,656,000 30,449,000 30,258,000 30,011,000 26,939,000 49,089,000 42,071,000 37,183,000 34,310,000 31,457,000 33,189,000 32,306,000 25,332,000 27,870,000 31,762,000 31,192,000 27,300,000 49,177,000 58,018,000 47,225,000 49,656,000 46,802,000 49,681,000 71,477,000 153,544,000 147,450,000 160,252,000 161,408,000 126,740,000 87,289,000 85,513,000 73,514,000 61,842,000 129,042,000 140,629,000                       
      other operating expenses
    77,708,000 91,246,000 80,910,000 74,695,000 78,897,000 72,219,000 68,496,000 62,917,000 65,011,000 74,020,000 66,172,000 98,337,000 63,756,000 84,455,000 71,597,000 74,311,000 68,847,000 58,286,000 54,488,000 55,627,000 59,580,000 38,167,000 69,422,000 59,095,000 59,577,000 61,948,000 63,109,000 66,315,000 68,859,000 69,263,000 68,389,000 70,092,000 78,948,000 75,174,000 75,088,000     58,861,750 78,419,000 79,183,000 77,845,000 68,565,000 69,774,000                                       
      total operating expenses
    875,886,000 865,099,000 809,078,000 800,326,000 781,351,000 747,478,000 704,108,000 724,165,000 716,880,000 693,783,000 696,535,000 716,309,000 713,867,000 710,483,000 683,104,000 744,211,000 697,733,000 541,967,000 453,713,000 617,306,000 382,940,000 354,442,000 663,615,000 618,286,000 613,854,000 600,290,000 627,275,000 681,987,000 691,350,000 678,837,000 695,225,000 704,218,000 719,567,000 703,163,000 689,120,000 1,162,480,000 713,942,000 717,201,000 700,266,000 700,533,000 715,708,000 718,485,000 726,323,000 775,553,000 803,330,000 800,160,000 794,566,000 788,575,000 787,926,000 810,285,000 890,408,000 900,716,000 928,598,000 914,657,000 865,724,000 628,576,000 600,471,000 589,822,000 574,495,000 639,054,000 631,818,000          659,992,000    305,846,000         
      operating income
    174,143,000 170,128,000 139,377,000 144,076,000 131,435,000 119,640,000 99,506,000 27,622,000 49,291,000 31,860,000 -4,704,000 -35,064,000 75,576,000 88,602,000 52,048,000 32,952,000 47,050,000 115,023,000 80,842,000 -27,669,000 74,553,000 -4,403,000 66,321,000 125,305,000 146,441,000 144,093,000 96,419,000 121,502,000 137,925,000 126,678,000 88,175,000 92,940,000 112,369,000 106,596,000 76,295,000 -404,464,000 85,834,000 84,137,000 61,809,000 52,211,000 78,296,000 69,932,000 34,075,000 59,080,000 13,244,000  56,174,000 50,555,000 15,561,000 54,974,000 46,806,000 20,457,000 26,827,000 19,040,000 227,000 58,282,000 49,288,000 42,421,000 63,253,000 59,769,000 40,824,000 60,259,000 72,951,000 68,222,000 92,469,000 88,855,000 79,575,000 -259,913,840 87,771,000 89,621,000 82,863,000 -134,817,592 55,994,000 44,596,000 34,446,000 37,942,000 35,159,000 34,857,000 19,908,500 35,233,000 24,252,000 20,149,000 34,572,000 
      yoy
    32.49% 42.20% 40.07% 421.60% 166.65% 275.52% -2215.35% -178.78% -34.78% -64.04% -109.04% -206.41% 60.63% -22.97% -35.62% -219.09% -36.89% -2712.38% 21.90% -122.08% -49.09% -103.06% -31.22% 3.13% 6.17% 13.75% 9.35% 30.73% 22.74% 18.84% 15.57% -122.98% 30.91% 26.69% 23.44% -874.67% 9.63% 20.31% 81.39% -11.63% 491.18%  -39.34% 16.86% -14.89%  20.01% 147.13% -42.00% 188.73% 20519.38% -64.90% -45.57% -55.12% -99.64% -2.49% 20.73% -29.60% -13.29% -12.39% -55.85% -32.18% -8.32% -126.25% 5.35% -0.85% -3.97% 92.79% 56.75% 100.96% 140.56% -455.33% 59.26% 27.94% 73.02% 7.69% 44.97% 73.00% -42.41%     
      qoq
    2.36% 22.06% -3.26% 9.62% 9.86% 20.23% 260.24% -43.96% 54.71% -777.30% -86.58% -146.40% -14.70% 70.23% 57.95% -29.96% -59.10% 42.28% -392.18% -137.11% -1793.23% -106.64% -47.07% -14.43% 1.63% 49.44% -20.64% -11.91% 8.88% 43.67% -5.13% -17.29% 5.42% 39.72% -118.86% -571.22% 2.02% 36.12% 18.38% -33.32% 11.96% 105.23% -42.32% 346.09%   11.11% 224.88% -71.69% 17.45% 128.80% -23.74% 40.90% 8287.67% -99.61% 18.25% 16.19% -32.93% 5.83% 46.41% -32.25% -17.40% 6.93% -26.22% 4.07% 11.66% -130.62% -396.13% -2.06% 8.16% -161.46% -340.77% 25.56% 29.47% -9.21% 7.92% 0.87% 75.09% -43.49% 45.28% 20.36% -41.72%  
      operating margin %
    16.58% 16.43% 14.70% 15.26% 14.40% 13.80% 12.38% 3.67% 6.43% 4.39% -0.68% -5.15% 9.57% 11.09% 7.08% 4.24% 6.32% 17.51% 15.12% -4.69% 16.30% -1.26% 9.09% 16.85% 19.26% 19.36% 13.32% 15.12% 16.63% 15.73% 11.26% 11.66% 13.51% 13.16% 9.97% -53.36% 10.73% 10.50% 8.11% 6.94% 9.86% 8.87% 4.48% 7.08% 1.62% 0% 6.60% 6.02% 1.94% 6.35% 4.99% 2.22% 2.81% 2.04% 0.03% 8.49% 7.59% 6.71% 9.92% 8.55% 6.07% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% -Infinity% Infinity% Infinity% 11.15% -Infinity% Infinity% Infinity% 10.12% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% 
      other income:
                                                                                       
      interest income
    10,565,000 11,050,000 10,086,000 11,835,000 12,460,000 12,040,000 11,626,000 12,167,000 11,234,000 10,494,000 10,033,000 8,273,000 6,348,000 2,559,000 425,000 382,000 238,000 210,000 284,000 227,000 1,403,000 1,685,000 2,564,000 3,050,000 3,542,000 3,731,000 3,807,000 3,131,000 2,283,000 1,705,000 1,705,000   1,330,000 660,000 637,000 591,000 485,000 430,000 350,000 311,000 697,000 640,000 2,549,000 511,000 548,000 567,000 870,000 1,727,000 2,053,000 2,043,000 1,954,000 2,215,000 2,114,000 1,966,000 2,810,000 4,142,000 3,970,000 1,841,000 2,724,000 2,722,000 4,627,000 5,009,000 6,762,000 8,674,000 8,130,000 7,110,000 -12,492,047 5,378,000 4,225,000 2,907,000 -10,152,057 3,822,000 3,381,000 2,962,000 2,474,000 2,184,000 1,896,000 2,084,250 2,767,000 2,651,000 2,919,000 3,171,000 
      interest expense
    -25,611,000 -26,566,000 -27,118,000 -27,737,000 -27,808,000 -28,966,000 -29,829,000 -31,049,000 -32,543,000 -33,718,000 -33,620,000 -34,775,000 -33,283,000 -30,433,000 -28,592,000 -28,848,000 -28,980,000 -33,940,000 -31,354,000 -31,893,000 -30,150,000 -30,926,000 -30,204,000 -30,871,000 -31,606,000 -32,770,000 -32,507,000 -33,924,000 -31,440,000 -28,811,000 -26,234,000 -26,212,000 -27,101,000 -27,063,000 -24,549,000 -22,301,000 -19,865,000 -18,287,000 -17,725,000                                            -165,000 
      other income
    -1,928,000 8,504,000  5,432,000 109,000 -548,000 -1,128,000 15,698,000 -3,631,000 9,001,000 2,174,000 -112,000 8,112,000 12,019,000 880,000 553,000 -4,098,000 80,000 216,000 301,250 405,000 402,000 398,000 11,841,750 361,000 281,000 46,725,000 867,500 1,157,000 -1,245,000 3,558,000                                                     
      total other expense
    -16,974,000 -7,012,000 -18,659,000 -10,470,000 -15,239,000 -17,474,000 -19,331,000 -3,184,000 -24,940,000 -14,223,000 -21,413,000 -26,614,000 -18,823,000 -15,855,000 -27,287,000 -27,913,000 -32,840,000 -33,650,000 -30,854,000     -27,517,000 -27,703,000 -28,758,000 18,025,000 -30,643,000 -28,000,000 -28,351,000 -20,971,000 -24,701,000 -25,693,000 -25,733,000 -23,889,000 -21,758,000 -19,274,000 -17,802,000 -17,295,000 13,550,000 -18,533,000                                           
      income before income taxes
    157,169,000 163,116,000 120,718,000 133,606,000 116,196,000 102,166,000 80,175,000 24,438,000 24,351,000 17,637,000 -26,117,000 -61,678,000 56,753,000 72,747,000 24,761,000 5,039,000 14,210,000 81,373,000 49,988,000 -59,375,000 46,211,000 -33,242,000 39,079,000 97,788,000 118,738,000 115,335,000 114,444,000 90,859,000 109,925,000 98,327,000 67,204,000 68,239,000 86,676,000 80,863,000 52,406,000 -426,222,000 66,560,000 66,335,000 44,514,000 65,761,000 59,763,000 52,548,000 16,250,000 68,344,000   44,367,000 33,712,000 5,362,000 32,915,000 28,647,000     39,249,000 30,640,000 24,551,000 45,527,000 41,492,000 13,161,000 41,014,000 58,047,000 44,689,000 68,312,000 65,532,000 56,303,000 -185,391,973 64,162,000 65,340,000 56,130,000 -118,928,374 47,759,000 40,585,000 30,762,000 35,465,000 33,423,000 32,284,000 20,214,750 34,636,000 24,419,000 21,804,000 37,578,000 
      provision for income taxes
    40,811,000 42,847,000 20,167,000 36,229,000 26,487,000 26,588,000 19,877,000 6,922,000 873,000 2,218,000 -4,046,000 -14,574,000 8,381,000 18,796,000 7,027,000 707,000 4,526,000 19,379,000 14,088,000 -12,925,000 12,549,000 -7,527,000 9,091,000 25,261,000 27,399,000 27,283,000 26,263,000 23,753,000 26,879,000 22,468,000 12,842,000 -221,690,000 32,960,000 30,386,000 17,620,000 -155,977,000 25,238,000 26,091,000 17,422,000 25,307,000 23,495,000  6,630,000                    21,613,000 15,549,000                    
      net income
    116,358,000 120,269,000 100,551,000 97,377,000 89,709,000 75,578,000 60,298,000 17,516,000 23,478,000 15,419,000 -22,071,000 -47,104,000 48,372,000 53,951,000 17,734,000 4,332,000 9,684,000 61,994,000 35,900,000 -46,450,000 33,662,000 -25,715,000 29,988,000 72,527,000 91,339,000 88,052,000 88,181,000 67,106,000 83,046,000 75,859,000 54,362,000 289,929,000 53,716,000 50,477,000 34,786,000 -270,245,000 41,322,000 40,244,000 27,092,000 40,454,000 36,268,000 31,475,000 9,620,000 41,338,000 -14,737,000 -22,887,000 26,394,000 20,720,000 3,233,000 20,933,000 16,960,000  116,000 1,579,000 -11,063,000 25,474,000 18,655,000 15,014,000 28,566,000 26,219,000 9,372,000 26,156,000 36,434,000 29,140,000 42,927,000 40,622,000 34,788,000 -114,413,194 40,685,000 39,286,000 34,588,000 -73,470,733 30,060,000 24,757,000 18,765,000 21,279,000 20,054,000 19,370,000 12,331,000 21,128,000 14,896,000 13,300,000 22,923,000 
      yoy
    29.71% 59.13% 66.76% 455.93% 282.10% 390.16% -373.20% -137.19% -51.46% -71.42% -224.46% -1187.35% 399.50% -12.97% -50.60% -109.33% -71.23% -341.08% 19.71% -164.05% -63.15% -129.20% -65.99% 8.08% 9.99% 16.07% 62.21% -76.85% 54.60% 50.28% 56.28% -207.28% 29.99% 25.43% 28.40% -768.03% 13.94% 27.86% 181.62% -2.14% -346.10% -237.52% -63.55% 99.51% -555.83% -209.33% 55.62%  2687.07% 1225.71% -253.30%  -99.38% -89.48% -138.73% -2.84% 99.05% -42.60% -21.60% -10.02% -78.17% -35.61% 4.73% -125.47% 5.51% 3.40% 0.58% 55.73% 35.35% 58.69% 84.32% -445.27% 49.90% 27.81% 52.18% 0.71% 34.63% 45.64% -46.21%     
      qoq
    -3.25% 19.61% 3.26% 8.55% 18.70% 25.34% 244.25% -25.39% 52.27% -169.86% -53.14% -197.38% -10.34% 204.22% 309.37% -55.27% -84.38% 72.69% -177.29% -237.99% -230.90% -185.75% -58.65% -20.60% 3.73% -0.15% 31.41% -19.19% 9.47% 39.54% -81.25% 439.74% 6.42% 45.11% -112.87% -754.00% 2.68% 48.55% -33.03% 11.54% 15.23% 227.18% -76.73% -380.50% -35.61% -186.71% 27.38% 540.89% -84.56% 23.43%   -92.65% -114.27% -143.43% 36.55% 24.25% -47.44% 8.95% 179.76% -64.17% -28.21% 25.03% -32.12% 5.67% 16.77% -130.41% -381.22% 3.56% 13.58% -147.08% -344.41% 21.42% 31.93% -11.81% 6.11% 3.53% 57.08% -41.64% 41.84% 12.00% -41.98%  
      net income margin %
    11.08% 11.62% 10.60% 10.31% 9.83% 8.72% 7.50% 2.33% 3.06% 2.12% -3.19% -6.91% 6.13% 6.75% 2.41% 0.56% 1.30% 9.44% 6.72% -7.88% 7.36% -7.35% 4.11% 9.75% 12.01% 11.83% 12.18% 8.35% 10.01% 9.42% 6.94% 36.37% 6.46% 6.23% 4.54% -35.65% 5.17% 5.02% 3.56% 5.37% 4.57% 3.99% 1.27% 4.95% -1.80% -2.96% 3.10% 2.47% 0.40% 2.42% 1.81% 0% 0.01% 0.17% -1.28% 3.71% 2.87% 2.37% 4.48% 3.75% 1.39% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% -Infinity% Infinity% Infinity% 4.66% -Infinity% Infinity% Infinity% 5.51% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% 
      basic earnings per share
    2.89 2.98 2.48 2.41 2.23 1.88 1.5 0.41 0.56 0.35 -0.45 -0.94 0.96 1.07 0.35 0.08 0.19 1.23 0.71 -0.93 0.67 -0.51 0.6 1.44 1.8 1.72 1.71 1.3 1.6 1.46 1.05 5.6 1.04 0.98 0.67 -5.25 0.8 0.78 0.53 0.8 0.72  0.19 0.81 -0.29 -0.44 0.51 0.4 0.06 0.41 0.33   0.03 -0.21 0.46 0.33 0.27 0.51 0.47 0.17 0.46 0.63 0.49 0.69 0.64 0.54 0.48 0.64 0.62 0.59 0.67 0.52 0.43 0.33 0.37 0.35 0.33 0.213 0.37 0.26 0.23 0.4 
      diluted earnings per share
    2.81 2.91 2.42 2.33 2.16 1.82 1.45 0.4 0.55 0.35 -0.45 -0.93 0.96 1.07 0.35 0.08 0.19 1.22 0.71 -0.92 0.66 -0.51 0.59 1.43 1.79 1.71 1.69 1.27 1.57 1.43 1.03 5.46 1.01 0.95 0.65 -5.22 0.79 0.77 0.52 0.78 0.71  0.18 0.79 -0.29 -0.44 0.5 0.39 0.06 0.4 0.33   0.03 -0.21 0.45 0.33 0.26 0.5 0.46 0.16 0.45 0.63 0.47 0.68 0.62 0.53 0.48 0.63 0.62 0.57 0.64 0.51 0.42 0.32 0.37 0.34 0.33 0.213 0.36 0.26 0.23 0.4 
      weighted-average common shares:
                                                                                       
      basic
    40,323 40,416 40,490 40,262 40,253 40,179 40,299 43,940 41,826 43,837 49,391 50,548 50,593 50,522 50,480 50,348 50,380 50,346 50,286 50,195 50,181 50,140 50,277 50,932 50,746 51,145 51,440 51,914 52,039 52,046 51,921 51,804 51,833 51,751 51,820 51,505 51,627 51,418 51,218 51,077 50,616 51,357 51,457 51,322 51,183 51,467 51,881 51,881 51,763 51,241 50,944 50,881 51,570 52,698 53,844 55,901 55,936 55,855 55,605 55,657 56,546 57,027 57,377 60,013 61,942 63,811 64,279 62,474 63,870 62,970 59,118 57,851 57,846 57,671 57,668 57,909 58,056 58,008  57,837 57,648 57,641 57,426 
      diluted
    41,392 41,351 41,599 41,547 41,561 41,431 41,492 44,599 42,580 44,219 49,391 50,644 50,636 50,566 50,708 50,753 50,725 50,725 50,727 50,195 50,622 50,140 50,559 51,375 51,129 51,477 52,098 52,871 52,981 52,913 53,033 53,100 53,080 52,977 53,202 51,505 52,471 52,194 52,014 51,825 51,282 51,971 52,392 52,036 51,183 51,467 52,610 52,547 52,497 52,153 51,789 50,881 52,315 53,371 53,844 56,804 56,718 56,864 56,652 56,558 57,427 57,682 58,009 61,351 62,888 65,245 65,837 63,382 64,482 63,759 60,417 58,933 59,016 58,323 58,197 58,206 58,595 58,633  58,423 57,974 57,649 57,584 
      comprehensive income:
                                                                                       
      net unrealized appreciation on marketable securities, net of taxes
    324   12.5 883      1,480                   84    17 39    15            35                                 
      total comprehensive income
    116,682 120,193 100,476 97,170 90,592 74,918 60,125 18,025 24,102 16,933 -20,591 -46,337 45,748 52,006 17,734 4,332 9,684 61,994 35,900 -46,450 33,355 -25,408 29,988 72,527 91,339 88,052 88,213 67,092 83,044 75,943 54,312 289,883 53,727 50,494 34,825 -270,273 41,311 40,457 27,107 40,244 36,429 31,252 9,921 39,986 -14,695 -22,864 26,824 20,157 3,296 20,646 17,136                                 
      net unrealized depreciation on marketable securities, net of taxes
     -76 -75         767 -2,624 -1,945                                                                      
      other expense
      -1,627,000                                                                                 
      aircraft rentals
       1,332,000 1,339,000 1,310,000 1,276,000 1,452,000 2,099,000 2,428,000 19,528,000 27,244,000 16,089,000 16,024,000 15,996,000 16,046,000 16,098,000 15,723,000 15,490,000 15,779,000 15,785,000 16,697,000 17,056,000 16,158,000 17,676,000 18,006,000 20,158,000 35,930,000 36,827,000 37,508,000 44,680,000 47,709,000 54,976,000 55,413,000 57,709,000 57,144,000 65,766,000 72,567,000 67,124,000 66,839,000 68,003,000 68,442,000 70,412,000 72,899,000 79,449,000 80,335,000 80,928,000 81,814,000 82,589,000 82,592,000 83,944,000 84,903,000 86,510,000 88,072,000 86,422,000 77,583,000 75,642,000 76,459,000 76,189,000 75,958,000 72,782,000                       
      net unrealized appreciation (depreciation) on marketable securities, net of taxes
         -660 -173 509 624 1,514                    -50 16.75 11   -28 -11 213  -210 161    42  363   88                                  
      special items - impairment charges
                   21,148,000 84,592,000                                                                   
      payroll support grant
                    -115,352,000 -114,144,000 -193,173,000                                                                 
      cares act payroll support grant
                       -3,353,000 -190,200,000 -151,938,000                                                              
      special items
                              21,869,000                                                         
      total other income
                       -21,105,750 -28,342,000 -28,839,000 -27,242,000                     9,264,000                                        
      net unrealized depreciation on debt securities, net of taxes
                        -307 307                                                              
      net unrealized appreciation on debt securities, net of taxes
                                                                                      
      airport customer service and other
                           18,499,000 21,457,000 19,048,000 23,693,000 11,628,000 13,218,000 11,878,000 15,436,000                                                     
      net unrealized appreciation (depreciation) on debt securities, net of taxes
                              32                                                         
      passenger
                                   777,661,000 812,295,000 791,341,000 745,411,000 740,736,000 781,475,000 784,813,000 744,390,000 736,938,000 777,480,000 773,107,000 742,498,000 815,867,000 800,548,000 755,639,000 836,890,000 826,122,000 785,871,000 848,578,000 920,633,000 902,356,000 936,363,000 919,690,000 844,476,000 676,932,000 642,201,000 623,112,000 629,955,000 691,141,000 664,883,000 926,193,000 943,570,000 859,159,000 867,076,000 846,356,000 780,567,000 -2,300,269,785 784,597,000 784,332,000 734,426,000 -1,202,052,550 490,191,000 378,243,000 335,557,000 303,802,000 262,221,000 250,655,000 161,572,500 228,974,000 211,498,000 205,818,000 201,458,000 
      ground handling and other
                                   19,497,000 19,641,000 18,418,000 20,004,000 17,280,000 18,301,000 16,525,000 17,685,000 15,806,000 16,524,000 15,310,000 17,900,000 18,766,000 16,026,000 16,747,000 13,850,000 13,008,000 17,616,000 16,681,000 16,581,000 18,817,000 19,062,000 14,007,000 21,475,000 9,926,000 7,558,000 9,131,000 7,793,000 7,682,000 7,759,000 7,919,000 7,250,000 8,864,000 8,525,000 8,692,000 8,401,000 -21,715,559 7,244,000 6,072,000 8,429,000 -17,667,402 7,158,000 5,800,000 4,735,000 4,463,000 5,166,000 3,049,000      
      ground handling services
                                   17,718,000 16,693,000 15,902,000 19,535,000 18,434,000 16,498,000 16,743,000 20,984,000 19,713,000 18,892,000 20,117,000 23,973,000 31,114,000 32,314,000 37,018,000 30,541,000 33,117,000 34,577,000 28,414,000 29,615,000 35,315,000 30,326,000 32,875,000 36,853,000 26,723,000 26,945,000 29,444,000 23,538,000 23,124,000 25,448,000                       
      interest income and other
                                   849,500 1,408,000                                                   
      other
                                       -231,098,000 77,215,000 79,181,000 74,609,000 258,615,000 1,070,000   23,598,000  65,168,000 59,124,000 56,800,000 61,438,000 58,832,000 57,043,000 54,350,000 61,845,000 58,394,000 59,537,000   38,056,000 1,582,000 116,000 36,471,000  6,308,000   278,000 189,000   13,000              
      special charges
                                                4,713,000                                       
      dividends declared per share
                                           0.03 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.03 0.03 0.03 0.03 0.03 0.03 0.023 0.03 0.03 0.03 0.023 0.03 0.03 0.03 0.03 0.03 0.03 0.015 0.02 0.02   
      proportionate share of other companies foreign currency translation adjustment, net of taxes
                                                  67    141                                 
      provision (benefit) for income taxes
                                             21,073,000                                          
      basic earnings (loss) per share
                                             0.61                                          
      diluted earnings (loss) per share
                                             0.61                                          
      net unrealized appreciation on marketable securities, net of tax
                                              301   23   63                                   
      station rentals and landing fees
                                               12,290,000 12,244,000 12,194,000 29,473,000 36,998,000 34,088,000 45,336,000 44,254,000 43,933,000 45,902,000 42,322,000 42,626,000 31,769,000 30,551,000 28,885,000 27,500,000 29,978,000 32,874,000                       
      benefit from income taxes
                                               27,006,000   17,973,000 12,992,000        13,775,000 11,985,000 9,537,000 16,961,000 15,273,000 3,789,000 14,858,000   25,385,000 24,910,000 21,515,000 -70,978,779 23,477,000 26,054,000 21,542,000 -45,457,641 17,699,000 15,828,000 11,997,000 14,186,000 13,369,000 12,914,000 7,883,750 13,508,000 9,523,000 8,504,000 14,655,000 
      benefit for income taxes
                                                9,736,000    2,129,000 11,982,000 11,687,000                                 
      comprehensive income
                                                                                       
      proportionate share of other companies foreign currency translation adjustment, net of tax
                                                                                       
      merger and integration related costs
                                                        2,207,000 1,364,000                              
      adjustment to purchase accounting gain
                                                                                       
      acquisition related costs
                                                          1,031,000                             
      basic loss per share
                                                                                       
      diluted loss per share
                                                                                       
      comprehensive loss:
                                                                                       
      proportionate share of other companies foreign currency translation adjustment, net of tax 20 and 102, respectively
                                                                                       
      net unrealized appreciation on marketable securities, net of tax of 263 and 198, respectively
                                                       412                                
      total comprehensive loss
                                                       -300                                
      provisionfor income taxes
                                                                                       
      other airline expense
                                                           40,216,000 38,355,000  35,358,000 36,024,000                        
      impairment on marketable securities
                                                                                       
      impairment of marketable securities
                                                                                       
      flying operations
                                                                 564,065,000 566,840,000 494,925,000 487,551,000 470,900,000 410,061,000 -1,287,177,105 447,702,000 442,731,000 398,466,000 -668,884,708 283,591,000 208,356,000 178,017,000 155,547,000 131,002,000 119,691,000 76,767,000 103,777,000 98,444,000 104,847,000 85,505,000 
      customer service
                                                                 88,137,000 90,245,000 101,446,000 103,032,000 107,774,000 117,453,000 -298,387,219 99,767,000 99,390,000 99,676,000 -177,115,254 65,626,000 55,984,000 55,778,000 45,941,000 42,434,000 41,510,000 25,477,250 34,198,000 33,564,000 34,147,000 31,476,000 
      maintenance
                                                                 126,795,000 125,172,000 110,325,000 101,196,000 96,463,000 94,489,000 -229,836,074 78,057,000 73,779,000 78,311,000 -107,499,325 41,306,000 34,349,000 32,032,000 32,453,000 24,415,000 24,499,000 14,469,750 22,141,000 19,474,000 16,264,000 23,733,000 
      general and administrative
                                                                 39,715,000 40,681,000 38,489,000 38,184,000 38,881,000 37,112,000 -106,689,991 31,124,000 37,621,000 38,050,000 -58,406,348 22,583,000 18,120,000 17,793,000 16,011,000 14,196,000 12,829,000 9,347,500 13,856,000 12,684,000 10,850,000 10,233,000 
      promotion and sales
                                                                           718,500 653,000 1,027,000 1,194,000 1,150,000 1,181,000 1,091,000 3,038,000 2,106,000 5,299,000 4,747,000 4,149,000 
      loss on sale of marketable securities
                                                                                       
      freight and other
                                                                                  1,064,000 1,516,000 1,196,000 1,544,000 1,255,000 
      us government airline assistance
                                                                                      -1,438,000 
      income before cumulative effect of change in accounting principle
                                                                                  12,331,000 21,128,000 14,896,000 13,300,000 22,923,000 
      cumulative effect of change in accounting principle, net of taxes of 5,492
                                                                                       
      basic earnings per share:
                                                                                       
      cumulative effect of change in accounting principle, net of tax
                                                                                       
      diluted earnings per share:
                                                                                       
      dividends declared per common share
                                                                                     0.02  
      cumulative effect of change in accounting principle, net of tax of 5,492
                                                                                       
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2025-09-30 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 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 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 2013-09-30 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 2009-09-30 2009-06-30 2009-03-31 2008-09-30 2008-06-30 2008-03-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-09-30 2005-06-30 2005-03-31 2004-09-30 2004-06-30 2004-03-31 2003-09-30 2003-06-30 2003-03-31 
                                                                                      
        current assets:
                                                                                      
        cash and cash equivalents
      44,528,000 48,330,000 178,973,000 227,362,000 177,609,000 141,760,000 179,979,000 148,277,000 125,330,000 114,433,000 74,524,000 102,984,000 38,850,000 96,071,000 246,001,000 258,421,000 271,831,000 345,854,000 231,005,000 215,723,000 418,228,000 452,247,000 289,544,000 87,206,000 307,909,000 253,661,000 290,885,000 328,384,000 324,561,000 175,728,000 251,447,000 181,792,000 98,085,000 143,448,000 95,441,000 146,766,000 49,767,000 227,982,000 246,765,000 203,035,000 126,744,000 171,165,000 91,108,000 151,393,000 69,791,000 82,603,000 267,746,000 140,546,000 143,075,000 136,458,000 108,714,000 98,946,000 84,598,000 139,131,000 127,740,000 82,774,000 59,180,000 64,441,000 108,199,000 132,985,000 137,326,000 152,194,000 207,399,000 240,126,000 170,150,000 392,117,000 442,024,000  380,332,000 239,715,000 147,407,000 110,595,000 120,812,000 99,784,000 44,406,000 70,485,000 61,682,000 145,491,000 96,937,000 101,380,000 
        marketable securities
      708,831,000 678,691,000 571,911,000 574,266,000 658,433,000 692,509,000 641,185,000 686,946,000 694,171,000 747,916,000 861,335,000 944,231,000 965,347,000 878,608,000 610,450,000 601,989,000 640,673,000 609,821,000 605,438,000 610,185,000 403,793,000 309,823,000 288,351,000 432,966,000 263,597,000 295,900,000 253,397,000 360,945,000 380,242,000 473,362,000 394,080,000 503,503,000 569,080,000 482,809,000 482,764,000 409,898,000 506,170,000 276,577,000 187,323,000 286,668,000 429,806,000 322,050,000 377,645,000 392,690,000 384,944,000 447,908,000 440,468,000 505,516,000 468,864,000 583,171,000 501,332,000 464,918,000 620,101,000 523,672,000 556,603,000 793,954,000 680,439,000 654,511,000 695,937,000 587,967,000 548,650,000 566,688,000 451,173,000 362,699,000 543,513,000 268,283,000 224,828,000  192,573,000 167,939,000 175,805,000 193,167,000 417,293,000 426,230,000 444,191,000 397,590,000 385,243,000 344,507,000 330,704,000 285,961,000 
        receivables
      146,516,000 151,672,000 137,161,000 122,778,000 111,199,000 102,772,000 85,882,000 82,854,000 118,844,000 104,706,000 101,036,000 100,523,000 72,836,000 75,963,000 68,039,000 65,348,000 56,320,000 55,908,000 43,666,000 34,462,000 32,890,000 42,498,000 37,197,000 82,977,000 77,532,000 80,233,000 78,370,000 64,194,000 62,233,000 71,240,000 61,327,000 42,731,000 40,337,000 38,017,000 38,558,000 46,916,000 49,649,000 62,380,000 80,053,000 62,162,000 64,702,000 71,827,000 71,816,000 92,662,000 118,584,000 121,130,000 94,806,000 86,892,000 135,833,000 126,810,000 139,261,000 146,233,000 133,056,000 143,864,000 130,840,000 103,429,000 110,805,000 104,756,000 67,069,000 81,856,000 59,514,000 74,334,000 101,577,000 64,098,000 72,651,000 58,888,000 41,496,000  38,327,000 53,766,000 33,157,000 40,601,000 30,114,000 34,527,000 48,797,000 34,303,000 17,749,000 14,642,000 26,291,000 26,561,000 
        inventories
      154,962,000 145,741,000 140,166,000 139,002,000 136,480,000 134,382,000 129,866,000 127,114,000 127,129,000 123,572,000 122,426,000 123,209,000 118,728,000 115,142,000 110,041,000 104,093,000 98,763,000 97,987,000 95,380,000 91,196,000 92,350,000 97,782,000 104,800,000 110,503,000 111,941,000 109,844,000 112,566,000 127,690,000 124,037,000 118,901,000 117,217,000 119,755,000 121,235,000 118,476,000 119,608,000 118,509,000 142,872,000 140,881,000 140,595,000 140,312,000 140,109,000 139,671,000 139,316,000 150,133,000 145,667,000 143,346,000 132,871,000 129,206,000 119,228,000 113,704,000 114,076,000 118,620,000 113,400,000 112,664,000 107,989,000 92,606,000 90,088,000 90,469,000 102,950,000 103,915,000 104,713,000 108,087,000 111,454,000 108,413,000 99,593,000 94,551,000 94,740,000  82,628,000 74,195,000 72,226,000 58,571,000 34,520,000 34,100,000 33,244,000 31,122,000 27,266,000 26,142,000 25,869,000 26,345,000 
        other current assets
      45,079,000 37,089,000 42,913,000 53,659,000 50,496,000 43,733,000 32,449,000 86,705,000 96,522,000 92,506,000 92,647,000 100,334,000 66,428,000 51,100,000 37,438,000 38,742,000 29,080,000 21,263,000 23,292,000 27,320,000 26,460,000 24,584,000 30,131,000 35,553,000 24,932,000 17,216,000 24,921,000 26,614,000 53,042,000 34,555,000 30,225,000 26,938,000 30,424,000 18,305,000 24,676,000 18,111,000 27,904,000 12,799,000 17,951,000 18,360,000 34,308,000 24,840,000 21,450,000 24,798,000 18,880,000 18,707,000 27,799,000 23,350,000 23,110,000 31,599,000 31,217,000 37,418,000 29,859,000 27,283,000 24,249,000 24,657,000 19,926,000 15,885,000 34,369,000 31,417,000 37,103,000 54,590,000 26,791,000 29,539,000 26,168,000 33,964,000 50,244,000  53,550,000 56,395,000 34,561,000 73,235,000 31,001,000 30,257,000 33,227,000 28,409,000 33,556,000 36,085,000 30,683,000 21,988,000 
        total current assets
      1,099,916,000 1,061,523,000 1,071,124,000 1,117,067,000 1,134,217,000 1,115,156,000 1,069,361,000 1,131,896,000 1,161,996,000 1,183,133,000 1,251,968,000 1,371,281,000 1,262,189,000 1,216,884,000 1,071,969,000 1,068,593,000 1,096,667,000 1,130,833,000 998,781,000 982,802,000 977,278,000 945,849,000 768,968,000 760,346,000 810,389,000 779,931,000 781,394,000 1,020,794,000 1,052,072,000 975,225,000 952,623,000 995,133,000 994,132,000 947,009,000 916,586,000 1,047,077,000 1,124,837,000 1,028,018,000 984,691,000 1,017,570,000 1,358,385,000 1,331,085,000 1,284,675,000 1,337,093,000 1,315,720,000 1,409,765,000 1,479,602,000 1,436,092,000 1,413,124,000 1,392,442,000 1,323,755,000 1,300,010,000 1,329,841,000 1,325,001,000 1,337,134,000 1,415,688,000 1,300,411,000 1,280,787,000 1,307,807,000 1,274,166,000 1,234,600,000 1,257,071,000 1,225,086,000 1,156,221,000 1,187,490,000 1,173,964,000 1,188,912,000  1,022,998,000 866,821,000 775,395,000 735,427,000 747,334,000 743,479,000 716,467,000 685,967,000 674,338,000 598,298,000 545,360,000 508,104,000 
        property and equipment:
                                                                                      
        aircraft and rotable spares
      9,066,940,000 9,006,084,000 8,883,675,000 8,774,570,000 8,462,449,000 8,407,450,000 8,405,513,000 8,323,107,000 8,254,591,000 8,233,312,000 8,217,413,000 8,143,614,000 8,262,736,000 8,052,327,000 7,960,911,000 7,848,100,000 7,529,226,000 7,613,584,000 7,587,004,000 7,527,555,000 7,274,843,000 7,273,577,000 7,203,714,000 7,078,801,000 6,903,732,000 6,817,319,000 6,696,982,000 6,433,916,000 6,229,941,000 5,929,735,000 5,583,624,000 5,335,870,000 5,252,416,000 5,202,929,000 5,002,597,000 4,839,501,000 5,819,701,000 5,528,654,000 5,325,637,000 5,242,790,000 5,193,614,000 5,060,487,000 4,836,689,000 4,504,659,000 4,346,323,000 4,121,304,000 4,049,227,000 4,029,501,000 4,014,946,000 3,992,589,000 3,986,412,000 3,986,196,000 3,910,840,000 3,859,587,000 3,847,518,000 3,726,282,000 3,715,535,000 3,711,730,000 3,418,678,000 3,337,216,000 3,274,746,000 3,219,175,000 3,217,887,000 3,193,113,000 3,191,318,000 3,167,014,000 3,087,900,000  2,861,109,000 2,777,657,000 2,762,711,000 2,726,650,000 1,208,471,000 1,192,222,000 1,037,759,000 1,026,481,000 1,015,018,000 794,578,000 916,306,000 720,158,000 
        deposits on aircraft
      85,000,000 85,000,000 70,752,000 65,612,000 71,457,000 77,282,000 77,282,000 77,282,000 79,459,000 23,931,000 23,931,000 23,931,000 47,229,000 91,813,000 129,514,000 124,964,000 121,293,000 90,044,000 36,625,000 31,625,000 40,263,000 40,263,000 48,858,000 48,858,000 50,906,000 50,906,000 37,602,000 42,012,000 27,579,000 49,000,000 49,000,000 49,000,000 49,000,000 21,976,000 27,572,000 38,800,000 38,150,000 38,150,000 38,150,000 38,150,000 34,822,000 37,700,000 40,000,000 40,000,000 40,000,000 40,000,000 35,629,000 24,200,000     6,750,000 13,500,000 13,600,000    12,642,000 16,077,000 19,312,000 23,622,000 23,622,000 23,622,000 226,000 226,000 4,678,000  4,819,000 36,569,000 36,570,000 62,851,000 77,360,000 37,260,000 76,524,000 82,782,000 74,729,000 70,679,000 81,337,000 101,088,000 
        buildings, ground equipment and other
      315,363,000 305,142,000 299,983,000 292,682,000                                                                             
        total property and equipment, gross
      9,467,303,000 9,396,226,000 9,254,410,000 9,132,864,000 8,877,776,000 8,804,244,000 8,775,428,000 8,682,787,000 8,619,974,000 8,530,668,000 8,519,254,000 8,432,564,000 8,572,431,000 8,414,942,000 8,354,424,000 8,229,659,000 7,906,867,000 7,956,266,000 7,876,783,000                                                              
        less-accumulated depreciation and amortization
      -3,804,913,000 -3,714,878,000 -3,631,603,000 -3,545,456,000 -3,460,508,000 -3,369,494,000 -3,284,609,000 -3,199,820,000 -3,121,549,000 -3,039,525,000 -2,957,796,000 -2,884,084,000 -2,933,660,000 -2,854,966,000 -2,825,603,000 -2,731,060,000 -2,621,410,000 -2,671,940,000 -2,563,123,000 -2,455,995,000 -2,351,052,000 -2,233,275,000 -2,103,585,000 -1,998,376,000 -1,906,345,000 -1,817,333,000 -1,730,681,000 -1,761,728,000 -1,680,115,000 -1,604,814,000 -1,533,346,000 -1,467,475,000 -1,405,207,000 -1,361,838,000 -1,374,666,000 -1,318,308,000 -2,218,391,000 -2,173,644,000 -2,121,773,000 -2,085,981,000                                -381,949,000         
        total property and equipment
      5,662,390,000 5,681,348,000 5,622,807,000 5,587,408,000 5,417,268,000 5,434,750,000 5,490,819,000 5,482,967,000 5,498,425,000 5,491,143,000 5,561,458,000 5,548,480,000 5,638,771,000 5,559,976,000 5,528,821,000 5,498,599,000 5,285,457,000 5,284,326,000 5,313,660,000 5,362,048,000 5,207,746,000 5,326,696,000 5,393,738,000 5,394,681,000 5,296,698,000 5,291,046,000 5,274,568,000 5,005,744,000 4,875,267,000 4,659,204,000 4,375,204,000 4,183,003,000 4,142,264,000 4,134,517,000 3,928,303,000 3,821,697,000 3,894,107,000 3,657,446,000 3,502,575,000 3,470,747,000 3,471,631,000 3,405,404,000 3,219,400,000 2,958,705,000 2,838,975,000 2,665,187,000 2,664,252,000 2,677,801,000 2,679,185,000 2,747,866,000 2,797,236,000 2,842,120,000 2,877,853,000 2,877,658,000 2,918,834,000 2,848,118,000 2,884,443,000 2,926,385,000 2,737,063,000 2,706,343,000 2,679,906,000 2,663,122,000 2,695,406,000 2,712,039,000 2,705,600,000 2,723,827,000 2,686,187,000  2,511,408,000 2,496,484,000 2,517,094,000 2,553,636,000 1,028,910,000 988,613,000       
        other assets:
                                                                                      
        operating lease right-of-use assets
      84,751,000 79,873,000 83,726,000 87,731,000 85,303,000 82,359,000 85,905,000 86,727,000 85,746,000 92,803,000 96,374,000 151,928,000 192,709,000 207,845,000 223,856,000 238,516,000 248,576,000 262,172,000 274,025,000 282,362,000 296,439,000 310,016,000 326,698,000 336,009,000 326,700,000 336,703,000 341,898,000                                                      
        long-term receivables and other assets
      367,139,000 351,339,000 336,609,000 347,661,000 319,812,000 330,174,000 336,658,000 324,703,000 312,951,000 348,695,000 323,961,000 342,864,000 360,535,000 351,942,000 324,312,000 320,239,000 309,802,000 314,432,000 308,219,000                                                              
        total other assets
      451,890,000 431,212,000 420,335,000 435,392,000 405,115,000 412,533,000 422,563,000 411,430,000 398,697,000 441,498,000 420,335,000 494,792,000 553,244,000 559,787,000 548,168,000 558,755,000 558,378,000 576,604,000 582,244,000 542,772,000 573,570,000 500,838,000 498,705,000 502,102,000 490,572,000 509,042,000 488,570,000 286,674,000 257,521,000 278,664,000 272,360,000 280,143,000 253,050,000 279,087,000 283,467,000 268,477,000 280,820,000 311,421,000 325,792,000 314,569,000 96,427,000 102,065,000 109,433,000 101,834,000 125,146,000 127,075,000 121,540,000 126,177,000 128,077,000 108,543,000 117,819,000 123,527,000 129,120,000 137,082,000 143,348,000 132,358,000 182,116,000 191,837,000 103,395,000 101,952,000 107,862,000 82,578,000 85,448,000 108,723,000 81,948,000 84,728,000 91,964,000  80,134,000 87,264,000 85,770,000 87,143,000         
        total assets
      7,214,196,000 7,174,083,000 7,114,266,000 7,139,867,000 6,956,600,000 6,962,439,000 6,982,743,000 7,026,293,000 7,059,118,000 7,115,774,000 7,233,761,000 7,414,553,000 7,454,204,000 7,336,647,000 7,148,958,000 7,125,947,000 6,940,502,000 6,991,763,000 6,894,685,000 6,887,622,000 6,758,594,000 6,773,383,000 6,661,411,000 6,657,129,000 6,597,659,000 6,580,019,000 6,544,532,000 6,313,212,000 6,184,860,000 5,913,093,000 5,600,187,000 5,458,279,000 5,389,446,000 5,360,613,000 5,128,356,000 5,137,251,000 5,299,764,000 4,996,885,000 4,813,058,000 4,802,886,000 4,926,443,000 4,838,554,000 4,613,508,000 4,397,632,000 4,279,841,000 4,202,027,000 4,265,394,000 4,240,070,000 4,220,386,000 4,248,851,000 4,238,810,000 4,265,657,000 4,336,814,000 4,339,741,000 4,399,316,000 4,396,164,000 4,366,970,000 4,399,009,000 4,148,265,000 4,082,461,000 4,022,368,000 4,002,771,000 4,005,940,000 3,976,983,000 3,975,038,000 3,982,519,000 3,967,063,000 3,731,419,000 3,614,540,000 3,450,569,000 3,378,259,000 3,376,206,000 1,795,608,000 1,751,544,000 1,631,882,000 1,611,786,000 1,591,271,000 1,308,744,000 1,395,993,000 1,197,336,000 
        current liabilities:
                                                                                      
        current maturities of long-term debt
      519,511,000 490,536,000 486,119,000 535,589,000 496,789,000 497,744,000 506,602,000 443,869,000 443,186,000 442,155,000 443,328,000 438,502,000 429,425,000 424,998,000 410,124,000 391,798,000 359,888,000 360,968,000 357,463,000 402,158,000 360,288,000 309,159,000 364,579,000 364,126,000 362,582,000 345,253,000 362,797,000 350,206,000 357,327,000 353,743,000 335,429,000 309,678,000 303,423,000 306,849,000 293,644,000 305,460,000 300,142,000 276,901,000 274,325,000 272,027,000 264,852,000 263,725,000 232,460,000 202,067,000 192,415,000 181,379,000 174,962,000 173,201,000 172,759,000 175,424,000 205,524,000 203,943,000 199,340,000 160,490,000 159,364,000 155,592,000 154,590,000 153,565,000 138,727,000 135,281,000 130,688,000 125,012,000 124,052,000 119,162,000 116,633,000 115,732,000 112,984,000  249,692,000 243,985,000 279,063,000 255,653,000  35,164,000 33,371,000 32,587,000 33,151,000 24,000,000 29,638,000 22,519,000 
        accounts payable and accrued liabilities
      580,080,000 556,805,000 576,056,000 527,351,000                                                                             
        accrued salaries, wages and benefits
      229,762,000 220,815,000 201,788,000 226,770,000 211,149,000 197,975,000 181,154,000 194,881,000 189,510,000 189,265,000 184,223,000 186,285,000 195,082,000 186,062,000 157,211,000 150,583,000 146,947,000 141,842,000 122,715,000 125,944,000 113,800,000 108,929,000 112,972,000 133,856,000 129,507,000 127,367,000 118,074,000 161,606,000 150,881,000 160,428,000 145,137,000 154,367,000 149,881,000 146,083,000 133,086,000 139,885,000 140,002,000 143,272,000 131,561,000 138,291,000 134,725,000 138,302,000 133,699,000 133,744,000 131,620,000 124,812,000 126,677,000 125,738,000 117,860,000 119,692,000 117,613,000 110,455,000 105,621,000 110,650,000 106,753,000 72,938,000 67,896,000 66,861,000 67,666,000 67,793,000 61,939,000 64,507,000 65,812,000 62,968,000 72,457,000 66,405,000 65,330,000  61,461,000 56,909,000 53,676,000 52,282,000 33,641,000 30,989,000 31,714,000 28,658,000 25,485,000 24,090,000 22,338,000 21,950,000 
        current maturities of operating lease liabilities
      19,919,000 20,071,000 20,379,000 20,467,000 18,496,000 18,805,000 19,668,000 19,335,000 19,225,000 18,715,000 18,741,000 71,726,000 74,141,000 75,609,000 78,930,000 78,886,000 78,188,000 78,289,000 82,671,000 82,641,000 83,291,000 87,415,000 88,649,000 94,806,000 87,472,000 81,796,000 73,524,000                                                      
        taxes other than income taxes
      23,393,000 22,553,000 18,894,000 22,581,000 26,660,000 24,659,000 20,924,000 26,077,000 24,736,000 22,631,000 20,130,000 20,480,000 36,213,000 28,611,000 26,669,000 28,869,000 30,333,000 28,505,000 26,523,000 26,183,000 33,392,000 20,221,000 14,148,000 15,004,000 18,708,000 16,662,000 13,901,000 16,024,000 21,618,000 16,762,000 16,570,000 19,228,000 23,883,000 17,105,000 15,283,000 15,618,000 24,393,000 18,019,000 15,234,000 17,176,000 22,457,000 20,598,000 15,219,000 23,477,000 18,059,000 13,825,000 20,761,000 19,166,000 16,417,000 22,908,000 18,215,000 17,507,000 24,471,000 22,161,000 26,703,000 22,754,000 20,407,000 21,015,000 24,347,000 18,359,000 18,856,000 24,465,000 17,651,000 14,896,000 29,772,000 24,392,000 16,218,000  27,550,000 24,948,000 19,258,000 24,083,000 12,249,000 10,134,000 8,891,000 8,831,000 6,832,000 8,459,000 8,619,000 6,179,000 
        other current liabilities
      180,594,000 146,895,000 113,688,000 96,833,000 100,804,000 105,118,000 103,294,000 99,879,000 42,282,000 35,918,000 33,466,000 33,549,000 43,634,000 45,295,000 56,597,000 48,152,000 94,496,000 199,997,000 45,828,000 26,119,000 25,086,000 138,003,000 32,205,000 32,411,000 34,416,000 35,001,000 36,836,000 65,008,000 63,187,000 56,653,000 50,542,000 48,648,000 45,640,000 44,025,000 44,963,000 45,087,000 45,387,000 43,069,000 42,972,000 40,802,000 43,798,000 40,544,000 45,070,000 45,755,000 41,030,000 43,788,000 41,247,000 37,133,000 40,572,000 43,101,000 38,980,000 43,838,000 40,559,000 35,355,000 46,291,000 38,011,000 33,084,000 39,450,000 38,394,000 32,842,000 43,625,000 41,231,000 36,456,000 47,548,000 52,708,000 43,615,000 49,581,000  39,905,000 50,486,000 35,952,000 38,484,000 20,284,000 21,139,000 17,478,000 14,954,000 17,005,000 14,972,000 18,551,000 17,275,000 
        total current liabilities
      1,553,259,000 1,457,675,000 1,416,924,000 1,429,591,000 1,314,174,000 1,323,928,000 1,312,296,000 1,254,292,000 1,205,670,000 1,165,994,000 1,152,102,000 1,172,543,000 1,159,895,000 1,198,413,000 1,142,288,000 1,194,621,000 1,137,755,000 1,109,358,000 950,438,000 941,722,000 859,904,000 986,187,000 1,019,843,000 924,676,000 961,539,000 927,328,000 945,327,000 924,826,000 913,445,000 878,595,000 837,818,000 820,825,000 799,134,000 779,090,000 750,508,000 747,265,000 759,619,000 740,790,000 729,383,000 751,386,000 734,134,000 744,718,000 697,065,000 659,911,000 645,826,000 636,192,000 604,157,000 585,952,000 587,135,000 600,066,000 630,017,000 634,241,000 625,499,000 585,945,000 579,188,000 468,380,000 450,468,000 464,485,000 431,123,000 428,597,000 416,557,000 424,077,000 444,130,000 422,821,000 429,600,000 429,511,000 448,331,000  532,121,000 515,478,000 583,006,000 673,245,000 200,585,000 176,809,000 169,825,000 161,174,000 152,142,000 153,642,000 153,655,000 121,295,000 
        long-term debt
      1,865,283,000 2,006,034,000 2,073,463,000 2,136,786,000 2,196,548,000 2,284,375,000 2,389,227,000 2,562,183,000 2,633,707,000 2,743,804,000 2,855,524,000 2,941,772,000 2,982,034,000 2,864,483,000 2,791,274,000 2,717,420,000 2,605,063,000 2,652,262,000 2,748,717,000 2,801,538,000 2,707,769,000 2,664,122,000 2,537,613,000 2,628,989,000 2,622,236,000 2,719,041,000 2,734,317,000 2,809,768,000 2,751,722,000 2,615,637,000  2,377,346,000         1,842,855,000 1,800,452,000 1,676,906,000 1,467,506,000 1,377,306,000 1,285,538,000 1,349,209,000 1,382,849,000 1,437,635,000 1,526,465,000 1,525,269,000 1,577,773,000 1,626,326,000 1,658,122,000 1,707,714,000 1,787,439,000 1,817,952,000 1,865,898,000 1,706,556,000 1,681,458,000 1,666,304,000 1,661,397,000 1,686,108,000 1,708,471,000 1,768,729,000 1,792,481,000 1,783,368,000 1,675,626,000 1,508,481,000 1,470,741,000 1,461,218,000 1,524,126,000 528,962,000 540,770,000    348,089,000 453,456,000 315,570,000 
        deferred income taxes payable
      863,756,000 838,041,000 806,042,000 787,968,000 751,983,000 725,430,000 703,602,000 687,600,000 681,575,000 682,694,000 681,550,000 687,060,000 683,828,000 679,794,000 669,026,000 663,236,000 657,067,000 656,259,000 639,046,000 625,931,000 638,938,000 625,504,000 633,110,000 623,580,000 596,897,000 569,439,000 541,196,000 518,159,000 493,562,000 459,927,000 434,683,000 419,020,000 640,685,000 609,957,000 581,203,000 694,689,000 882,352,000 805,624,000 768,556,000 749,575,000 772,710,000 754,195,000 710,317,000 718,719,000 717,727,000 718,048,000 725,613,000 715,285,000 657,760,000 603,439,000 589,610,000 573,499,000 573,716,000 568,332,000 567,467,000 585,080,000 561,870,000 546,645,000 518,756,000 506,600,000 490,075,000 488,450,000 477,479,000 461,501,000 385,160,000 379,603,000 352,402,000  287,727,000 243,608,000 260,169,000 198,548,000 186,126,000 181,200,000 179,065,000 170,678,000 169,106,000 76,249,000 78,486,000 71,991,000 
        noncurrent operating lease liabilities
      64,832,000 59,802,000 63,347,000 67,264,000 66,807,000 63,554,000 66,237,000 67,392,000 66,520,000 73,894,000 76,418,000 88,622,000 117,823,000 134,597,000 147,994,000 158,274,000 171,443,000 187,860,000 200,598,000 205,845,000 221,839,000 238,572,000 259,039,000 259,237,000 254,258,000 265,516,000                                                       
        other long-term liabilities
      188,799,000 230,111,000 280,199,000 309,477,000 315,591,000 333,972,000 346,478,000 341,324,000 334,948,000 292,149,000 236,109,000 176,925,000 114,676,000 114,329,000 108,661,000 124,882,000 107,367,000 137,119,000 174,365,000 173,041,000 145,044,000 116,036,000 48,368,000 45,633,000 46,469,000 46,450,000 48,037,000 66,870,000 62,678,000 62,001,000  42,541,000         50,052,000 48,603,000 48,825,000 47,730,000 73,609,000 73,475,000 75,544,000 59,132,000 57,628,000 54,285,000 48,775,000 48,820,000 51,458,000 51,773,000 47,825,000 42,883,000 39,165,000 39,779,000 39,561,000 40,352,000 41,489,000 41,689,000 41,066,000 41,287,000 36,166,000 36,041,000 39,254,000  33,817,000 36,704,000 34,565,000 25,689,000         
        commitments and contingencies
                                                                                      
        stockholders’ equity:
                                                                                      
        preferred stock, 5,000,000 shares authorized; none issued
                                                                                      
        common stock
      794,215,000 788,280,000 783,048,000 777,090,000 772,320,000 766,130,000 761,318,000 754,362,000 750,133,000 744,276,000 740,030,000 734,426,000 736,406,000 731,210,000 727,900,000 722,310,000 720,932,000 717,714,000 712,324,000 704,675,000 703,780,000 694,997,000 690,065,000 686,806,000 684,541,000 680,802,000 692,593,000 690,910,000 688,168,000 682,545,000 679,768,000 672,593,000 668,970,000 664,917,000 662,343,000 657,353,000 657,662,000 649,624,000 645,908,000 641,643,000 635,217,000 631,078,000 628,875,000 624,810,000 621,956,000 620,800,000 617,701,000 614,703,000 613,720,000 606,677,000 603,491,000 602,366,000 597,817,000 593,902,000 592,673,000 588,145,000 583,053,000 581,503,000 576,308,000 571,749,000 570,851,000 557,752,000 548,972,000 546,222,000 530,152,000 526,993,000 504,688,000  488,548,000 480,683,000 380,034,000 338,051,000 337,998,000 335,287,000 332,025,000 331,990,000 327,357,000 324,784,000 324,567,000 322,492,000 
        retained earnings
      2,931,351,000 2,814,993,000 2,694,724,000 2,594,173,000 2,496,796,000 2,407,087,000 2,331,509,000 2,271,211,000 2,253,695,000 2,230,217,000 2,214,798,000 2,236,869,000 2,283,973,000 2,235,601,000 2,181,650,000 2,163,916,000 2,159,584,000 2,149,900,000 2,087,906,000 2,052,006,000 2,098,456,000 2,064,794,000 2,090,509,000 2,079,179,000 2,012,691,000 1,927,412,000 1,845,467,000 1,776,585,000 1,714,621,000 1,636,768,000 1,566,114,000 1,516,957,000 1,231,169,000 1,181,601,000 1,135,265,000 1,103,751,000 1,376,585,000 1,337,849,000 1,300,179,000 1,275,142,000 1,236,627,000 1,202,437,000 1,173,031,000 1,195,351,000 1,156,074,000 1,172,867,000 1,191,265,000 1,166,921,000 1,148,277,000 1,135,229,000 1,116,346,000 1,101,425,000 1,124,074,000 1,126,114,000 1,126,529,000 1,104,771,000 1,081,535,000 1,065,134,000 1,035,128,000 1,008,812,000 984,832,000 958,008,000 933,706,000 899,008,000 833,189,000 792,247,000 753,611,000  691,481,000 652,740,000 615,392,000 545,725,000 517,427,000 494,432,000 457,932,000 438,403,000 420,099,000 386,166,000 366,195,000 352,455,000 
        treasury stock
      -1,047,640,000 -1,020,870,000 -1,003,574,000 -962,650,000 -957,994,000 -941,529,000 -928,076,000 -912,396,000 -866,946,000 -816,446,000 -720,448,000 -619,862,000 -619,862,000 -619,835,000 -619,835,000 -618,712,000 -618,709,000 -618,709,000 -618,709,000 -617,136,000 -617,136,000 -617,136,000 -617,136,000 -590,971,000 -580,972,000 -555,969,000 -537,493,000 -503,182,000 -473,898,000 -458,645,000 -458,645,000 -435,178,000 -424,420,000 -423,961,000 -423,761,000 -410,090,000 -410,090,000 -410,090,000 -410,090,000 -410,090,000                                -32,551,000   -32,551,000      
        accumulated other comprehensive income
      341,000 17,000 93,000 168,000 375,000 -508,000 152,000 325,000                                -260,000   12,000 273,000 1,625,000 1,583,000 1,436,000 1,006,000 1,569,000 1,713,000 1,999,000 1,823,000 2,765,000 2,134,000 1,671,000 1,335,000 1,112,000 1,362,000 878,000 451,000 603,000                232,000    
        total stockholders’ equity
      2,678,267,000 2,582,420,000 2,474,291,000 2,408,781,000 2,311,497,000 2,231,180,000 2,164,903,000 2,113,502,000 2,136,698,000 2,157,239,000 2,232,058,000 2,347,631,000 2,395,948,000 2,345,031,000 2,289,715,000 2,267,514,000 2,261,807,000 2,248,905,000 2,181,521,000 2,139,545,000 2,185,100,000 2,142,962,000 2,163,438,000 2,175,014,000 2,116,260,000 2,052,245,000 2,000,567,000 1,964,281,000 1,928,873,000 1,860,652,000 1,787,137,000 1,754,322,000 1,475,715,000 1,422,542,000 1,373,815,000 1,350,943,000 1,624,114,000 1,577,351,000 1,535,901,000 1,506,435,000 1,461,703,000 1,423,213,000 1,410,554,000 1,429,070,000 1,388,291,000 1,409,224,000 1,427,452,000 1,411,223,000 1,392,159,000 1,372,408,000 1,350,630,000 1,334,408,000 1,358,862,000 1,372,263,000 1,391,664,000 1,402,114,000 1,384,902,000 1,367,206,000 1,332,695,000 1,302,371,000 1,282,510,000 1,264,640,000 1,232,324,000 1,216,883,000 1,225,769,000 1,224,844,000 1,224,465,000  1,146,236,000 1,099,029,000 961,238,000 850,068,000 821,604,000 795,298,000 756,939,000 748,564,000 727,403,000 690,427,000 669,969,000 653,379,000 
        total liabilities and stockholders’ equity
      7,214,196,000 7,174,083,000 7,114,266,000 7,139,867,000 6,956,600,000 6,962,439,000 6,982,743,000 7,026,293,000 7,059,118,000 7,115,774,000 7,233,761,000 7,414,553,000 7,454,204,000 7,336,647,000 7,148,958,000 7,125,947,000 6,940,502,000 6,991,763,000 6,894,685,000 6,887,622,000 6,758,594,000 6,773,383,000 6,661,411,000 6,657,129,000 6,597,659,000 6,580,019,000 6,544,532,000 6,313,212,000 6,184,860,000 5,913,093,000 5,600,187,000 5,458,279,000 5,389,446,000 5,360,613,000 5,128,356,000 5,137,251,000 5,299,764,000 4,996,885,000 4,813,058,000 4,802,886,000 4,926,443,000 4,838,554,000 4,613,508,000 4,397,632,000 4,279,841,000 4,202,027,000 4,265,394,000 4,240,070,000 4,220,386,000 4,248,851,000 4,238,810,000 4,265,657,000 4,336,814,000 4,339,741,000 4,399,316,000 4,396,164,000 4,366,970,000 4,399,009,000 4,148,265,000 4,082,461,000 4,022,368,000 4,002,771,000 4,005,940,000 3,976,983,000 3,975,038,000 3,982,519,000 3,967,063,000  3,614,540,000 3,450,569,000 3,378,259,000 3,376,206,000 1,795,608,000 1,751,544,000 1,631,882,000 1,611,786,000 1,591,271,000 1,308,744,000 1,395,993,000 1,197,336,000 
        buildings and ground equipment
          343,870,000 319,512,000 292,633,000 282,398,000 285,924,000 273,425,000 277,910,000 265,019,000 262,466,000 270,802,000 263,999,000 256,595,000 256,348,000 252,638,000 253,154,000 258,863,000 243,692,000 246,131,000 244,751,000 265,398,000 248,405,000 240,154,000 270,665,000 291,544,000 297,862,000 285,283,000 275,926,000 265,608,000 246,055,000 271,450,000 272,800,000 261,704,000 254,647,000 264,286,000 260,561,000 275,788,000 273,102,000 282,606,000 272,819,000 283,350,000 288,038,000 301,870,000 279,164,000 275,477,000 272,776,000 280,713,000 294,199,000 291,329,000 287,935,000 282,695,000 280,762,000 247,011,000 244,122,000 241,948,000 241,016,000 242,279,000 240,043,000 241,340,000 236,683,000 231,815,000 209,242,000 201,386,000 200,039,000  165,239,000 157,187,000 154,165,000 146,084,000 106,535,000 102,035,000 98,260,000 95,994,000 89,408,000 77,429,000 76,132,000 75,419,000 
        accounts payable
          460,276,000 479,627,000 480,654,000 470,251,000 486,731,000 457,310,000 452,214,000 422,001,000 381,400,000 437,838,000 412,757,000 496,333,000 427,903,000 299,757,000 315,238,000 278,677,000 244,047,000 322,460,000 407,290,000 284,473,000 328,854,000 321,249,000 340,195,000 331,982,000 320,432,000 291,009,000 290,140,000 288,904,000 276,307,000 265,028,000 263,532,000 241,215,000 248,176,000 256,132,000 261,043,000 279,864,000 265,807,000 278,019,000 270,617,000 252,180,000 260,441,000 269,306,000 231,380,000 217,647,000 227,127,000 225,153,000 231,196,000 240,098,000 236,272,000 233,037,000 216,558,000 170,147,000 163,799,000 175,529,000 149,789,000 154,312,000 142,169,000 154,297,000 180,934,000 164,044,000 140,149,000 154,911,000 184,217,000  131,760,000 112,494,000 82,648,000 113,015,000 55,455,000 45,340,000 52,704,000 47,065,000 44,739,000 48,645,000 31,269,000 33,452,000 
        accumulated other comprehensive loss
              -184,000 -808,000 -2,322,000 -3,802,000 -4,569,000 -1,945,000              -32,000 -18,000 -16,000 -100,000 -50,000  -15,000 -32,000 -71,000 -43,000 -32,000 -96,000                                 -1,157,000         
        income tax receivable
                         3,916,000 3,557,000 18,915,000 18,945,000 11,141,000 24,478,000 23,077,000 21,255,000 25,936,000 18,118,000 11,115,000 8,596,000 5,316,000    6,989,000 4,307,000 1,677,000 2,770,000 2,871,000 393,000 1,378,000   1,004,000 6,366,000     285,000 2,095,000 4,329,000 7,678,000 4,544,000 20,463,000 14,588,000 12,531,000 11,549,000 16,588,000 14,470,000 9,220,000 5,444,000 8,206,000 24,997,000 672,000 672,000  2,044,000 3,835,000 1,395,000    45,604,000 50,465,000 63,891,000    
        property and equipment: - sum
                         7,818,043,000 7,558,798,000 7,559,971,000 7,497,323,000 7,393,057,000 7,203,043,000 7,108,379,000               5,501,538,000 5,380,793,000 5,149,508,000   4,463,174,000                                   
        other assets
                          277,131,000 190,822,000 172,007,000  163,872,000 172,339,000 146,672,000  68,164,000 71,194,000 69,182,000  42,472,000 44,536,000 43,691,000 41,723,000 52,848,000 51,808,000 54,257,000 74,890,000 85,366,000 90,442,000 97,247,000 88,523,000 111,273,000 112,639,000 105,980,000 110,054,000 111,392,000 90,733,000 99,446,000 104,592,000 109,060,000 116,460,000 122,163,000 110,048,000 159,244,000 168,403,000 78,836,000 76,830,000 82,178,000 55,769,000 58,076,000 80,788,000 52,888,000 55,105,000 61,778,000  48,637,000 55,390,000 53,334,000 52,816,000 19,364,000 19,452,000 16,464,000 16,519,000 16,527,000 14,218,000 11,045,000 9,579,000 
        other long-term assets
                         260,410,000    166,093,000    104,844,000    49,220,000                                                 
        unrealized appreciation on securities
                           307,000                                                           
        prepaid aircraft rents
                                 87,031,000 89,839,000 90,324,000 89,731,000 115,098,000 126,693,000 137,692,000 147,289,000 162,360,000 171,347,000 182,661,000 198,209,000 195,216,000 402,685,000 437,193,000 444,328,000 381,046,000 408,781,000 416,847,000 335,379,000 362,990,000 381,473,000 301,259,000 329,874,000 337,559,000 260,422,000 288,728,000 303,278,000 242,089,000 272,563,000 282,960,000 225,829,000 255,824,000 269,385,000 207,241,000 237,282,000 253,986,000 210,583,000 239,695,000 253,118,000  199,350,000 208,898,000 223,216,000 144,435,000 94,910,000 99,897,000 57,838,000 64,433,000 75,791,000 31,431,000 34,876,000 45,869,000 
        long-term prepaid assets
                                 181,830,000 189,357,000 207,470,000 203,178,000 230,923,000 204,457,000 227,427,000 232,090,000 218,505,000                                             
        deferred aircraft credits
                                 29,308,000 34,580,000 36,281,000 37,415,000 44,225,000 46,546,000 48,802,000 51,172,000 53,459,000 55,866,000 57,735,000 60,169,000 62,523,000 64,989,000 67,373,000 69,841,000 74,696,000 77,082,000 79,550,000 83,419,000 85,629,000 88,069,000 92,188,000 94,509,000 96,916,000 100,953,000 103,306,000 105,458,000 110,268,000 112,613,000 114,996,000 119,574,000 123,083,000 125,433,000 122,518,000 124,833,000 126,020,000 129,614,000 120,039,000 119,243,000  106,158,000 85,009,000 78,063,000 74,530,000 58,331,000 57,467,000 51,767,000 51,513,000 51,696,000 40,337,000 40,427,000 35,101,000 
        noncurrent operating leases
                                275,088,000                                                      
        other long term liabilities
                                    62,363,000  46,574,000 47,559,000 50,387,000 50,844,000 52,822,000 52,469,000 54,283,000 56,191,000                                         
        long term debt, net of current maturities
                                    2,440,771,000  2,380,792,000 2,452,663,000 2,321,271,000 2,240,051,000 1,924,991,000 1,762,916,000 1,664,766,000 1,676,776,000                                         
        restricted cash
                                      8,278,000 8,262,000 8,250,000 8,243,000 8,235,000 8,227,000 8,221,000 8,216,000 11,584,000 11,584,000 11,582,000 11,582,000 12,220,000 12,219,000 19,559,000 19,559,000 19,555,000 19,449,000 19,445,000 19,440,000 19,530,000 21,756,000 22,600,000 6,481,000 6,481,000 10,730,000 10,729,000 10,729,000 10,729,000 10,718,000 10,681,000 14,782,000 14,601,000 16,525,000 16,409,000  22,100,000 22,100,000 22,100,000 114,823,000 18,684,000 18,684,000 9,160,000 9,160,000 9,160,000    
        intangible assets
                                      6,121,000 7,124,000 7,686,000 8,249,000 8,811,000 9,374,000 9,936,000 10,499,000 11,061,000 11,623,000 12,186,000 13,311,000 13,873,000 14,436,000 15,560,000 16,123,000 16,685,000 17,810,000 18,373,000 18,935,000 20,060,000 20,622,000 21,185,000 22,310,000 22,872,000 23,434,000 24,559,000 25,122,000 25,684,000 26,809,000 27,372,000 27,935,000 29,060,000 29,623,000 30,186,000  31,497,000 31,874,000 32,436,000          
        deferred tax assets
                                         129,285,000 164,586,000 114,834,000 102,804,000 100,730,000 148,054,000 151,377,000 127,430,000 132,789,000 155,849,000 160,639,000 160,974,000 168,033,000 121,986,000 79,992,000 79,551,000 74,781,000 64,546,000 60,225,000 59,291,000 49,235,000 46,341,000 44,504,000 51,176,000 52,885,000 52,710,000 73,999,000 73,285,000 74,372,000 25,234,000 69,269,000 65,381,000  52,094,000 39,978,000 65,528,000          
        non-current prepaid aircraft rents
                                          219,161,000 250,239,000 261,599,000 229,180,000                                         
        accrued aircraft rents
                                          1,519,000 3,397,000 4,248,000 3,226,000 2,495,000 3,530,000  2,688,000 2,261,000 3,082,000 8,725,000 11,587,000 11,862,000 13,670,000 18,489,000 18,400,000 19,236,000 24,252,000 23,519,000 8,938,000 10,692,000 8,065,000 12,200,000 20,010,000 19,280,000 14,565,000 19,225,000 14,203,000 17,881,000 24,456,000 20,001,000  21,753,000 26,656,000 22,409,000 21,561,000 28,414,000 25,774,000 25,667,000 29,079,000 24,930,000 28,412,000 27,627,000 19,920,000 
        accumulated other comprehensive
                                                                                      
        assets
                                                                                      
        less accumulated depreciation and amortization
                                                                                      
        liabilities and stockholders’ equity
                                                                                      
        income tax payable
                                                    405,000 1,480,000 538,000 118,000                      13,167,000 16,099,000 8,269,000    5,064,000   
        operating revenues
                                                                         3,114,656,000             
        operating income
                                                                         339,160,000             
        income before cumulative effect of change in accounting principle
                                                                         145,806,000             
        net income
                                                                         145,806,000             
        net income per common share:
                                                                                      
        basic
                                                                         2,330             
        diluted
                                                                         2,300             
        weighted-average shares:
                                                                                      
        current assets
                                                                         1,095,454,000             
        current liabilities
                                                                         408,431,000             
        stockholders’ equity
                                                                         1,178,293,000             
        return on average equity
                                                                         13,900             
        cash dividends declared per common share
                                                                         120             
        lines of credit
                                                                            90,000,000          
        long-term line of credit
                                                                             30,000,000         
        intantible assets
                                                                             34,327,000         
        contingent acquisition liabilities
                                                                             95,000,000         
        line of credit
                                                                             60,000,000         
        commitments and contingences
                                                                                      
        long-term debt, less current maturities
                                                                                474,286,000 479,857,000 490,924,000    
        preferred stock
                                                                                      
        accumulated other comprehensive loss, net of tax
                                                                                -467,000      
        preferred stock, 5,000,000 shares authorized: none issued
                                                                                      
        maintenance contract asset
                                                                                      
        maintenance contract liability
                                                                                      
        customer deposits
                                                                                    15,613,000  
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2025-12-31 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 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 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 2013-09-30 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 2009-09-30 2009-06-30 2009-03-31 2008-09-30 2008-06-30 2008-03-31 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 2004-09-30 2004-06-30 2004-03-31 2003-09-30 2003-06-30 2003-03-31 
                                                                                          
          operating lease payments for aircraft and facility obligations
                                                                                          
          firm aircraft and spare engine commitments
                                                                                          
          interest commitments
                                                                                          
          principal maturities on long-term debt
                                                                                          
          total commitments and obligations
                                                                                          
          net cash from operating activities
         280,777,000 257,060,000 171,023,000 185,897,000 183,603,000 165,314,000 157,648,000 224,427,000 178,884,000 182,820,000 150,203,000 136,841,000 128,256,000 194,771,000 20,508,000 144,865,000 188,267,000 267,095,000 231,593,000 84,860,000 56,420,000 222,800,000 269,483,000 138,562,000 220,345,000 207,209,000 154,914,000 229,407,000 222,305,000 184,927,000 165,895,000 151,835,000 200,506,000 187,850,000 143,933,000 107,347,000 171,284,000 193,490,000 34,544,000 106,564,000 144,733,000 133,601,000 35,206,000 153,880,000 66,784,000 -34,295,000 122,129,000 143,113,000 -13,836,000 134,820,000 111,264,000 -1,917,000 110,075,000 59,718,000 -8,394,000 138,975,000 78,679,000 62,461,000 141,675,000 99,962,000 67,344,000    153,185,000 112,234,000 100,715,000 -355,453,365 180,641,000 130,481,000 44,823,000 -147,046,466 75,296,000 84,887,000 -12,929,000 46,158,000 59,951,000 23,034,000 53,182,000 74,060,000 2,933,000 
          capital expenditures
         -29,035,000 45,606,000 -12,265,000 21,669,000 6,575,000 16,541,000 -4,576,000 4,649,000 -2,433,000 4,667,000 13,567,000    
          free cash flows
         280,777,000 228,025,000 216,629,000 185,897,000 171,338,000 186,983,000 164,223,000 224,427,000 195,425,000 178,244,000 154,852,000 136,841,000 125,823,000 199,438,000 34,075,000 144,865,000 188,267,000 267,095,000 231,593,000 84,860,000 56,420,000 222,800,000 269,483,000 138,562,000 220,345,000 207,209,000 154,914,000 229,407,000 222,305,000 184,927,000 165,895,000 151,835,000 200,506,000 187,850,000 143,933,000 107,347,000 171,284,000 193,490,000 34,544,000 106,564,000 144,733,000 133,601,000 35,206,000 153,880,000 66,784,000 -34,295,000 122,129,000 143,113,000 -13,836,000 134,820,000 111,264,000 -1,917,000 110,075,000 59,718,000 -8,394,000 138,975,000 78,679,000 62,461,000 141,675,000 99,962,000 67,344,000    153,185,000 112,234,000 100,715,000 -355,453,365 180,641,000 130,481,000 44,823,000 -147,046,466 75,296,000 84,887,000 -12,929,000 46,158,000 59,951,000 23,034,000 53,182,000 74,060,000 2,933,000 
          cash flows from investing activities:
                                                                                          
          purchases of marketable securities
         -228,732,000 -402,211,000 -349,334,000 -218,525,000 -489,861,000 -384,653,000 -337,694,000 -357,134,000 -448,866,000 -244,349,000 -289,116,000 -76,278,000 -503,912,000 -658,888,000 -595,325,000 -446,224,000 -272,760,000 -466,012,000 -332,865,000 -498,878,000 -373,741,000 -238,629,000 -236,527,000 -469,659,000 -572,765,000 -398,213,000 -498,113,000 -732,777,000 -198,543,000 -989,876,000 -387,572,000 -531,243,000 -264,523,000 -282,111,000 -455,990,000 -350,821,000 -1,099,175,000 -552,830,000 -508,562,000 -306,198,000                                          
          sales of marketable securities
         198,916,000 295,355,000 351,614,000 302,485,000 524,820,000 332,669,000 383,282,000 364,868,000 503,235,000 359,282,000 373,492,000 98,161,000 414,549,000 388,785,000 586,864,000 484,908,000 241,908,000 461,629,000 337,612,000 292,486,000 279,464,000 217,464,000 381,142,000 300,290,000 605,068,000 355,710,000 605,693,000 752,060,000 291,661,000 910,678,000 496,945,000 596,774,000 178,263,000 282,083,000 383,163,000 446,959,000 869,541,000 463,610,000 608,058,000 449,127,000 419,254,000 282,858,000 147,830,000 78,051,000 122,233,000 92,772,000 99,268,000 162,122,000 182,560,000 208,833,000 99,142,000 120,220,000 139,787,000 147,479,000 234,872,000 132,856,000 247,285,000 107,910,000 214,595,000 191,896,000 145,555,000 253,227,000 220,429,000 502,684,000 162,850,000 203,817,000 130,409,000 -94,241,082 90,343,000 -12,632,000 16,786,000 -595,056,185 319,947,000 205,649,000 70,060,000       
          acquisition of property and equipment:
                                                                                          
          aircraft and rotable spare parts
         -111,433,000 -162,975,000 -64,857,000 -133,974,000 -85,047,000 -13,308,000 -33,525,000 -86,468,000 -29,071,000 -29,576,000 -92,953,000 -109,777,000 -221,679,000 -189,222,000 -111,782,000 -313,969,000 -160,155,000 -11,546,000 -51,904,000 -255,226,000 -9,225,000 -87,685,000 -73,482,000 -161,821,000 -93,539,000 -128,628,000 -197,341,000 -213,657,000 -294,846,000 -355,100,000 -198,777,000 -97,652,000 -49,081,000 -293,527,000 -220,916,000 -519,158,000 -305,148,000 -219,716,000 -94,941,000                                           
          buildings and ground equipment
         -10,848,000 -5,533,000 -8,453,000 -23,210,000 -11,505,000 -5,930,000 -4,250,000 720,000 -2,640,000 -1,019,000 -10,319,000 -1,666,000 -1,840,000 -7,289,000 -2,236,000 -7,654,000 -1,773,000 -4,476,000 -4,224,000 -3,280,000 -703,000 -5,153,000 -3,542,000 -19,565,000 -5,156,000 -3,790,000 -52,075,000 1,473,000 -16,800,000 -9,765,000 -9,305,000 -19,192,000 -5,855,000 -1,941,000 -479,000 -3,094,000 -3,953,000 -3,843,000 -3,460,000                                           
          proceeds from the sale of property and equipment
         1,679,000 3,705,000 118,000 1,037,000 1,159,000 746,000 2,212,000 9,305,000 2,759,000 1,653,000 2,162,000 8,489,000 2,219,000 3,526,000 2,749,000 13,000 4,822,000 132,000 2,150,000                                                               
          deposits on aircraft
         -25,938,000 -5,140,000     -9,472,000    -9,069,000 -28,031,000 -25,596,000 -41,836,000 -53,269,000 -5,000,000 -9,000,000   -21,000,000                                                        
          decrease in other assets
                                                                                          
          net cash from investing activities
         -146,549,000 -306,549,000 -66,109,000 -109,626,000 -43,008,000 -75,439,000 -554,000 -84,231,000 -8,988,000 66,959,000 3,032,000 -40,325,000 -307,980,000 -431,922,000 -124,667,000 -301,737,000 -214,404,000 -60,974,000 -121,407,000 -422,024,000 -190,824,000 -125,610,000 54,987,000 -351,740,000 -56,245,000 -172,144,000 -76,905,000 -241,046,000 -194,624,000 -447,661,000 -100,073,000 -56,283,000 -166,714,000 -279,433,000 -248,907,000 -326,351,000 -537,544,000 -312,114,000 -1,069,000 91,040,000         54,381,000   5,705,000  22,501,000 74,311,000                           
          cash flows from financing activities:
                                                                                          
          proceeds from issuance of long-term debt
           93,106,000    44,689,000 25,000,000 83,113,000 224,636,000 191,013,000 185,740,000 236,706,000 117,896,000 55,499,000 39,931,000 205,079,000 103,226,000   100,126,000 79,974,000 19,940,000 158,502,000 242,519,000 282,327,000 101,317,000 86,852,000 226,842,000 157,983,000 428,559,000 248,544,000 180,734,000 68,232,000 45,649,000 113,664,000 229,485,000 203,083,000 136,276,000 158,108,000 29,281,000          81,698,000 59,519,000 59,075,000 20,986,000   44,886,000 132,906,000 -68,180,897 61,211,000 7,093,000 -140,839,020 140,980,000 34,450,000 167,361,000 172,270,000 61,803,000 
          principal payments on long-term debt
         -112,618,000 -110,765,000 -113,672,000 -114,634,000 -112,422,000 -114,641,000 -111,158,000 -116,421,000 -110,035,000 -113,872,000 -107,276,000 -115,265,000 -102,824,000 -102,982,000 -93,979,000 -92,071,000 -166,688,000 -146,771,000 -135,007,000 -70,222,000 -1,993,000 -25,393,000 -89,796,000 -91,192,000 -80,050,000 -112,996,000 -98,204,000 -107,852,000 -102,536,000 -88,800,000 -71,587,000 -84,513,000 -76,195,000 -81,446,000 -88,104,000 -103,764,000 -62,066,000 -79,132,000 -57,196,000                                           
          payment of debt issuance cost
           -334,000    -67,000 -108,000 -229,000 -726,000 -810,000 -413,000 -1,170,000                                                                  
          net proceeds from issuance of common stock
         1,358,000 1,293,000 1,418,000 1,446,000 1,536,000 1,275,000 -1,000 1,444,000 1,514,000 1,401,000 1,745,000 1,287,000 1,532,000  1,730,000 2,279,000 2,261,000  2,892,000 2,320,000  1,664,000 302,000 1,481,000 -2,072,000 6,166,000 2,042,000 2,006,000 2,963,000 3,070,000 991,000 2,730,000 1,898,000 79,000 1,854,000 1,844,000 28,000 2,638,000 1,915,000 -75,000 2,236,000 2,241,000 2,000 2,201,000 2,384,000 38,000 2,466,000 2,814,000 2,000 5,905,000 5,874,000 153,000 8,817,000 248,000 17,040,000 9,066,000 -114,176,052 4,194,000 96,609,000 13,488,000 -2,745,215 53,000 2,711,000 3,000      2,313,000 
          employee income tax paid on vested equity awards
         -27,242,000 -6,930,000 -585,000 -27,000 -1,123,000 -3,000 -1,573,000                                                               
          purchase of treasury stock and excise tax
             -16,465,000                                                                             
          net cash from financing activities
         -138,030,000 -81,154,000 -153,303,000 -26,518,000 -104,746,000 -128,094,000 -125,392,000 -117,249,000 -158,999,000 -209,870,000 -181,695,000 -32,382,000 122,503,000 87,221,000 91,739,000 143,462,000 -47,886,000 -91,272,000 -94,904,000 134,659,000    -7,525,000 -109,852,000 -72,289,000 -115,508,000 15,462,000 121,152,000 187,015,000 3,833,000 -11,845,000 -79,155,000 139,590,000 53,649,000 316,003,000 188,045,000 99,841,000 10,255,000 -121,313,000 44,450,000 134,870,000 162,365,000 99,716,000             -49,144,000 57,858,000       -68,282,000 -28,693,000 126,654,000 -64,253,385   6,030,000 -248,157,487 90,562,000 -5,444,000 163,282,000 -17,896,000 -9,139,000 29,594,000 194,879,000 161,365,000 60,276,000 
          increase in cash and cash equivalents
           -48,389,000 49,753,000 35,849,000 -38,219,000 31,702,000 22,947,000 10,897,000   64,134,000 -57,221,000 -149,930,000 -12,420,000 -13,410,000 -74,023,000 114,849,000 15,282,000 -202,505,000 -34,019,000 162,703,000 202,338,000 -220,703,000 54,248,000 -37,224,000 -37,499,000 3,823,000   69,655,000       -18,783,000 43,730,000        127,200,000 -2,529,000 9,303,000     11,391,000 15,402,000     -4,341,000 11,434,000   117,324,000   26,570,000 -239,443,160 140,617,000 92,308,000 6,793,000           
          cash and cash equivalents at beginning of period
         227,362,000 148,277,000 102,984,000 258,421,000 215,723,000 87,206,000 328,384,000 181,792,000 146,766,000 203,035,000  132,275,000 170,636,000 133,772,000 129,526,000 112,338,000 76,414,000 125,892,000 122,802,000 415,454,000  140,614,000  113,020,000 112,407,000 130,960,000 
          cash and cash equivalents at end of period
         -3,802,000 -130,643,000 178,973,000 49,753,000 35,849,000 -38,219,000 179,979,000 22,947,000 10,897,000 39,909,000 74,524,000 64,134,000 -57,221,000 -149,930,000 246,001,000 -13,410,000 -74,023,000 114,849,000 231,005,000 -202,505,000 -34,019,000 162,703,000 289,544,000 -220,703,000 54,248,000 -37,224,000 290,885,000 3,823,000 148,833,000 -75,719,000 251,447,000 83,707,000 -45,363,000 48,007,000 95,441,000 96,999,000 -178,215,000 -18,783,000 246,765,000  -44,421,000 80,057,000 91,108,000 81,602,000 -12,812,000 82,603,000 127,200,000 -2,529,000 143,075,000 27,744,000 9,768,000 98,946,000 -54,533,000 11,391,000 127,740,000 23,594,000 -5,261,000 64,441,000 -24,786,000 -4,341,000 137,326,000 -55,205,000 -32,727,000 240,126,000 -221,967,000 -49,907,000 442,024,000  140,617,000 92,308,000 147,407,000  -10,217,000 21,028,000 99,784,000 -26,079,000 8,803,000 61,682,000 48,554,000 -4,443,000 101,380,000 
          supplemental disclosure of cash flow information:
                                                                                          
          non-cash investing and financing activities:
                                                                                          
          change in accrued capital expenditures for the period
                                                                                          
          cash paid during the period for:
                                                                                          
          interest, net of capitalized amounts
         28,669,000 25,674,000 27,637,000  28,271,000 28,439,000 30,362,000  32,065,000 32,293,000 33,838,000  32,033,000 30,357,000 29,840,000  29,630,000 35,121,000 31,646,000  54,118,000 10,468,000 31,413,000  32,322,000 33,490,000 34,288,000 32,657,000 30,846,000 28,284,000 26,481,000 27,724,000 26,972,000 26,904,000 24,039,000 22,275,000 18,427,000 19,340,000 16,547,000 24,540,000 18,587,000 22,249,000 15,281,000 13,654,000 19,981,000 13,122,000 13,846,000 22,030,000 14,603,000 15,597,000 23,967,000 15,294,000 15,566,000 25,058,000 16,312,000 16,597,000 27,140,000 15,558,000 15,563,000 30,890,000 17,396,000 24,981,000 32,150,000 23,840,000 24,748,000 42,078,000 17,398,000 -80,225,881 24,028,000 30,417,000 25,895,000 -23,674,280 9,309,000 9,945,000 4,474,000       
          income taxes, net of refunds
         4,133,000 9,108,000 -18,000                                                                               
          ​
                                                                                          
          decrease (increase) in other assets
          -8,952,000 9,943,000  11,601,000 -4,963,000 -10,579,000  21,123,000 -19,032,000 19,766,000          -86,865,000 -20,202,000 -13,970,000  5,608,000 -5,066,000 7,028,000                                                       
          purchase of treasury stock
          -17,296,000 -13,682,000    -8,750,000  -50,500,000 -95,998,000 -100,001,000                       -200,000 -13,671,000                                               
          decrease in cash and cash equivalents
                   -28,460,000                        -51,325,000                                               
          acquisition of property and equipment
          -29,035,000 45,606,000  -12,265,000 21,669,000 6,575,000  16,541,000 -4,576,000 4,649,000  -2,433,000 4,667,000 13,567,000                                                                   
          cash paid (refunded) during the period for:
                                                                                          
          cash flows from operating activities:
                                                                                          
          net income
                                       54,362,000                                7,294,000 29,140,000               21,128,000 14,896,000 13,300,000 
          adjustments to reconcile net income to net cash from operating activities:
                                                                                          
          depreciation and amortization
                                       77,585,000                                                19,179,000 18,977,000 16,358,000 
          stock based compensation expense
                                                                                          
          decrease in credit loss reserves
                                                                                          
          gain on disposal of fixed assets
                                                                                          
          loss on investments in other companies
                                                                                          
          net increase in deferred income taxes
                                                                                          
          impairment (gain) on assets held for sale
                                                                                          
          changes in operating assets and liabilities:
                                                                                          
          decrease in receivables
                                                                                          
          decrease in income tax receivable
                                                                                          
          increase in inventories
                                                                                          
          decrease in other current assets
                                                                                          
          decrease in operating lease right-of-use assets
                                                                                          
          increase in operating lease liabilities
                                                                                          
          increase in deferred revenue
                                                                                          
          decrease in unbilled revenue
                                                                                          
          increase in accounts payable and other current liabilities
                                                                                          
          aircraft deposits applied towards acquired aircraft
                    23,298,000 44,584,000 47,020,000 23,481,000 21,975,000        18,638,000 4,660,000      19,709,000 5,596,000 11,228,000                                               
          decrease in investments and financing activities with third parties and other assets
                                                                                          
          purchase of treasury stock and related excise tax
                                                                                          
          derecognition of right of use assets
                 -4,185,000 -35,062,000                                                                       
          derecognition of operating lease liabilities
                 4,185,000 35,062,000                                                                       
          income taxes
             662,000 14,226,000 42,000  6,282,000 2,369,000 533,000  139,000 101,000 116,000  5,917,000 300,000 157,000  68,000 177,000 126,000  702,000 60,000 1,653,000 279,000 530,000 1,366,000 486,000 2,656,000 1,756,000 120,000 478,000 268,000 203,000 57,000 684,000 3,610,000 881,000 40,000 573,000 103,000 -69,000 451,000 1,629,000 492,000 388,000 37,000 -1,423,000 -54,000 -366,000 231,000 467,000 -113,000 315,000 180,000 694,000 2,011,000 110,000 7,976,000 1,859,000 13,924,000 496,000 101,000 115,000 -2,109,923 828,000 1,184,000 100,000 -15,382,753 13,774,000 1,594,000 69,000 3,397,000 306,000 10,030,000 1,167,000 1,583,000 
          impairment on assets held for sale
                                                                                          
          special items
                                                                                          
          decrease in operating lease liabilities
                                                                                          
          write-off of maintenance assets
                                                                                          
          increase in credit loss reserves
                                                                                          
          loss on disposal of fixed assets
                                                                                          
          gain on investments in other companies
                                                                                          
          decrease in inventories
                                                                                         688,000 
          increase in unbilled revenue
                                                                                          
          increase in other assets
                    17,448,000 -41,901,000 -6,785,000 -387,000  4,403,000 12,568,000 -67,176,000          2,483,000 -3,598,000 -1,364,000  1,079,000 -3,673,000 -2,425,000   665,000 -2,164,000                                           
          payment of cash dividends
                            -7,020,000 -6,039,000 -6,061,000 -6,107,000 -6,158,000 -5,141,000 -5,194,000 -5,205,000 -5,205,000 -4,140,000 -4,147,000 -4,141,000 -4,139,000 -2,588,000 -2,587,000 -2,574,000 -2,055,000 -2,040,000                                           
          warrants issued to u.s. treasury
                         2,513,000 3,291,000                                                               
          gain on sale of expressjet subsidiary
                                                                                          
          net cash received from sale of expressjet subsidiary
                                 53,200,000                                                       
          purchase of common stock
                                                                                          
          return of deposits applied towards acquired aircraft
                                                                                          
          acquisition of rotable spare parts
                          10,417,000 1,380,000  -4,991,000 -20,578,000 34,100,000  418,000   -9,979,000 9,920,000 -148,000 574,000   334,000 1,704,000                                               
          decrease in deferred aircraft credits
                                                                                          
          proceeds from the sale of aircraft, property and equipment
                            1,627,000 246,000 1,366,000 404,000 4,539,000 21,022,000 43,000     915,000 427,000 14,140,000 36,512,000 1,160,000                                              
          purchase of treasury and common stock and employee income tax paid on equity awards
                             -26,165,000  -25,003,000                                                         
          increase in debt issuance and lessor initial direct costs
                             -2,135,000 -133,000 -1,664,000                                                           
          non-cash investing activities:
                                                                                          
          debt assumed on aircraft acquired under operating leases
                                 14,475,000                                                       
          engines contributed to joint venture
                                                                                         
          non-cash assets used to acquire aircraft under operating leases
                                                                                          
          lease liability arising from the recognition of right-of-use asset
                                 456,472,000                                                       
          cares act warrant issuance
                             5,403,000                                                             
          supplemental disclosure of sale of subsidiary:
                                                                                          
          decrease in carrying amount of assets
                                 -101,448,000                                                       
          decrease in carrying amount of liabilities
                                 68,341,000                                                       
          cash received from buyers
                                 79,632,000                                                       
          gain on sale of subsidiary
                                -93,050,000                                                         
          net cash provided used in financing activities
                              65,513,000 -122,132,000                                                           
          decrease in restricted cash
                                                                                          
          increase in operating lease right-of-use asset
                                                                                          
          net cash received from sale of subsidiary
                                                                                          
          proceeds from issuance of common stock
                                                                                    28,000 4,232,000 329,000 217,000   
          increase in debt issuance cost
                                -400,000 -422,000 -767,000 -53,000  -1,265,000 -1,307,000 -610,000  -24,000 -1,769,000 -1,452,000  -2,025,000 -1,748,000 -747,000                                           
          right of use assets applied to aircraft acquired under operating leases
                                  150,688,000                                                       
          purchase of treasury stock and employee income tax paid on equity awards
                                   -34,311,000  -15,253,000 -23,467,000                                                   
          details of sales of subsidiaries:
                                                                                          
          transaction costs
                                                                                          
          gain on sale of subsidiaries
                                   46,525,000                                                       
          gain from early extinguishment of debt
                                                                                          
          increase in accounts payable and accrued aircraft rents
                                                                                          
          increase in other current liabilities
                                                                                          
          proceeds from settlement of residual value guarantee aircraft agreements
                                                                                          
          decrease in debt issuance cost
                                                                                          
          debt assumed on aircraft acquired off lease
                                    59,132,000                                                   
          operating revenues:
                                                                                          
          flying agreements
                                       767,964,000                                                   
          airport customer service and other
                                       15,436,000                                                   
          total operating revenues
                                       783,400,000                                                   
          operating expenses:
                                                                                          
          salaries, wages and benefits
                                       306,719,000                                                   
          aircraft maintenance, materials and repairs
                                       141,606,000                                                   
          aircraft rentals
                                       44,680,000                                                   
          airport-related expenses
                                       29,307,000                                                   
          aircraft fuel
                                       26,939,000                                                   
          other operating expenses
                                       68,389,000                                                   
          total operating expenses
                                       695,225,000                                                   
          operating income
                                       88,175,000                                                   
          other income:
                                                                                          
          interest income
                                       1,705,000                                                   
          interest expense
                                       -26,234,000                                                   
          other income
                                       3,558,000                                                   
          total other expense
                                       -20,971,000                                                   
          income before income taxes
                                       67,204,000                                                   
          provision for income taxes
                                       12,842,000                                                   
          basic earnings per share
                                       1,050                                140 490                  
          diluted earnings per share
                                       1,030                                160 470                  
          weighted-average common shares:
                                                                                          
          basic
                                       51,921,000                                                   
          diluted
                                       53,033,000                                                   
          comprehensive income:
                                                                                          
          net unrealized appreciation (depreciation) on marketable securities, net of taxes
                                       -50,000                                                   
          total comprehensive income
                                       54,312,000                                                   
          employee income tax paid on equity awards
                                                                                          
          purchase of treasury stock and cash tax withholding on shares issued
                                                                                          
          loss on sale of property and equipment
                                                                                          
          gain from equity ownership in trip airlines
                                                                                          
          capitalized brasilia emb-120 engine overhauls
                                                                                          
          increase in income tax receivable
                                                                                          
          decrease in other current assets and prepaid aircraft rents
                                                                                          
          proceeds from installment payment from sale of equity shares in trip airlines
                                                                                          
          return of deposits on aircraft
                                                -3,328,000 2,878,000                                         
          gain from equity ownership in trip and air mekong airlines
                                                                                          
          increase in other current assets and prepaid aircraft rents
                                                                                          
          proceeds from installment payment of equity shares of trip
                                                                                          
          cash and cash equivalents at beginning of year
                                                                                          
          cash and cash equivalents at end of year
                                                                                          
          cash paid during the year for:
                                                                                          
          proceeds from the sale of equipment
                                                 52,000 2,753,000 2,966,000 3,465,000   168,000 12,000 90,000 3,000,000 630,000 81,000 110,000 24,000 39,000 75,000 339,000 2,053,000 16,142,000   187,000                  
          proceeds received from sale of trip linhas aereas s.a. stock
                                                                                          
          tax deficiency from exercise of common stock options
                                                                                          
          tax deficiency from exercise of commons stock
                                                                                          
          proceeds received from sale of trip linhas aereas stock
                                                                                          
          tax benefit (deficiency) from exercise of common stock options
                                                                                          
          cash paid (received) during the period for:
                                                                                          
          cash paid (received) during the year for:
                                                                                          
          tax benefit from exercise of common stock options
                                                          133,000            -9,000 170,000 -59,000 131,000 68,000  671,000 946,000 382,000        94,000 
          return of deposits on aircraft and rotable spare parts
                                                             6,750,000   4,247,000 3,435,000 3,235,000 1,078,000 226,000 4,452,000 7,245,000 -39,282,076 31,750,000 1,000 7,572,000 -32,221,616 8,317,000 6,131,000 17,810,000       
          payments received on note receivable from united air lines
                                                                75,333,000 1,999,000 2,001,000                        
          net cash (used in) investing activities
                                                                                          
          net cash (used in) financing activities
                                                                                          
          tax (deficiency) benefit from exercise of common stock options
                                                                                          
          net cash from (used) in investing activities
                                                                                          
          disposition (acquisition) of property and equipment:
                                                                                          
          proceeds from sales of property and equipment
                                                                      893,000                   
          net cash provided by operating activities
                                                                       112,113,000 136,474,000                  
          acquisition / disposition of property and equipment:
                                                                                          
          increase (decrease) in cash and cash equivalents
                                                                                          
          numerator
                                                                                          
          denominator
                                                                                          
          weighted-average number of common shares outstanding
                                                                       -2,636,000 60,013,000                  
          effect of outstanding stock compensation
                                                                                          
          weighted-average number of shares for diluted net income per common share
                                                                       -3,342,000 61,351,000                  
          net cash provided by (used) in investing activities
                                                                        65,945,000                  
          net cash provided by (used) in financing activities
                                                                                          
          effect of outstanding share-based compensation
                                                                        1,338,000                  
          payment on lines of credit
                                                                                          
          cash paid during the nine months ended for:
                                                                                          
          proceeds from the sale of aircraft
                                                                           1,829,000               
          maintenance expense related to disposition of rotable spares
                                                                                         264,000 
          gain on sale of property and equipment
                                                                                          
          loss on sale of marketable securities
                                                                                          
          decrease in allowance for doubtful accounts
                                                                                          
          amortization of deferred aircraft credits
                                                                                          
          decrease (increase) in restricted cash
                                                                                          
          decrease (increase) in receivables
                                                                                       12,298,000   
          decrease (increase) in income tax receivable
                                                                                          
          decrease (increase) in inventories
                                                                                       -273,000   
          decrease (increase) in other current assets and prepaid aircraft rents
                                                                                          
          purchase of asa, net of cash acquired
                                                                                          
          proceeds from sale-lease-back of aircraft
                                                                                          
          proceeds from issuance of lines of credit
                                                                                          
          non-cash investing and financing activities
                                                                                          
          deposits applied to delivered aircraft
                                                                                -22,020,957 22,043,000 3,088,000 18,743,000 23,305,000 30,018,000 
          debt transferred to operating lease
                                                                                -55,319,625 55,375,000       
          deposits applied as lease payments
                                                                                          
          proceeds from sales of aircraft
                                                                             1,546,000 5,776,000  1,392,000 11,734,000       
          deposits applied to leased aircraft
                                                                                          
          acquisition disposition of property and equipment:
                                                                                          
          (gain) loss on sale of property and equipment
                                                                                          
          deferred aircraft credits, net of accretion
                                                                                          
          increase in restricted cash
                                                                                          
          proceeds from issuance of line of credit
                                                                                          
          increase(decrease) in cash and cash equivalents
                                                                                          
          proceeds from the issuance of line of credit
                                                                                          
          increase/(decrease) in cash and cash equivalents
                                                                                          
          sales and maturities of marketable securities
                                                                                          
          aircraft and rotable spares
                                                                                          
          proceeds from sale/lease back transactions
                                                                                          
          interest
                                                                                    3,851,000 6,807,000 3,463,000 4,280,000 3,687,000 1,167,000 
          aircraft and rotable spares acquired through interim financing
                                                                                       -29,944,000 -15,437,000 141,066,000 
          purchases, sales and maturities of marketable securities
                                                                                          
          maintenance expense related to disposition or usage of rotable spares
                                                                                       159,000   
          increase in deferred income taxes
                                                                                       -2,237,000 6,495,000 8,612,000 
          deferred aircraft credits
                                                                                       -90,000 5,326,000 7,343,000 
          increase in prepaid aircraft rents and other current assets
                                                                                          
          decrease in engine overhaul accrual
                                                                                          
          increase in other current liabilities, customer deposits and taxes other than income taxes
                                                                                       -12,537,000   
          purchases and maturities of marketable securities
                                                                                         8,642,000 
          return of deposits on aircraft and rotable spares
                                                                                          
          long-term debt transferred to operating lease
                                                                                          
          decrease in accounts payable and accrued aircraft rents
                                                                                          
          (decrease) in allowance for doubtful accounts
                                                                                          
          (increase) in receivables
                                                                                          
          (increase) in prepaid aircraft rents and other current assets
                                                                                          
          (decrease) in accounts payable and accrued aircraft rents
                                                                                          
          (decrease) in engine overhaul accrual
                                                                                          
          increase in other current liabilities and taxes other than income taxes
                                                                                         4,432,000 
          (increase) in other assets