Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Operating revenues:
Total operating revenues	$ 1,197,104	$ 1,258,543	$ 3,743,530	$ 4,040,789
Operating expenses:
Aircraft fuel	373,399	455,241	1,187,046	1,333,984
Salaries, wages and benefits	427,125	404,177	1,276,986	1,201,067
Landing fees and other rents	130,044	107,525	352,826	311,357
Aircraft rent	148,511	97,393	389,056	274,761
Depreciation and amortization	84,028	82,802	249,860	241,335
Maintenance, materials and repairs	57,368	56,465	164,736	167,704
Distribution	55,687	46,323	146,786	145,041
Special charges (credits)	151	12,378	36,028	46,333
Loss (gain) on disposal of assets	3,191	(2,250)	(13,885)	5,652
Other operating	214,039	187,249	610,379	594,499
Total operating expenses	1,493,543	1,447,303	4,399,818	4,321,733
Operating income (loss)	(296,439)	(188,760)	(656,288)	(280,944)
Other (income) expense:
Interest expense	54,135	41,260	163,251	121,933
Loss (gain) on extinguishment of debt	0	0	(14,996)	0
Capitalized interest	(1,173)	(8,582)	(16,865)	(24,675)
Interest income	(11,341)	(18,442)	(37,100)	(49,838)
Other (income) expense	(23)	649	(65,848)	1,957
Total other (income) expense	41,598	14,885	28,442	49,377
Income (loss) before income taxes	(338,037)	(203,645)	(684,730)	(330,321)
Provision (benefit) for income taxes	(29,794)	(46,093)	(40,925)	(66,509)
Net income (loss)	$ (308,243)	$ (157,552)	$ (643,805)	$ (263,812)
Basic earnings (loss) per share (in dollars per share)	$ (2.81)	$ (1.44)	$ (5.88)	$ (2.42)
Diluted earnings (loss) per share (in dollars per share)	$ (2.81)	$ (1.44)	$ (5.88)	$ (2.42)
Passenger
Operating revenues:
Total operating revenues	$ 1,171,405	$ 1,233,912	$ 3,664,518	$ 3,971,446
Other
Operating revenues:
Total operating revenues	$ 25,699	$ 24,631	$ 79,012	$ 69,343