Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Operating revenues:
Total operating revenues	$ 929	$ 973	$ 1,841	$ 1,838
Operating expenses:
Aircraft fuel	230	288	468	551
Salaries, wages and benefits	254	244	503	477
Aircraft rent	194	147	355	306
Station operations	178	163	358	300
Maintenance, materials and repairs	47	42	98	91
Sales and marketing	39	47	80	87
Depreciation and amortization	21	18	41	34
Other operating	41	(1)	59	(2)
Total operating expenses	1,004	948	1,962	1,844
Operating income (loss)	(75)	25	(121)	(6)
Other income (expense):
Interest expense	(10)	(8)	(19)	(17)
Capitalized interest	8	7	16	16
Interest income and other	7	8	14	15
Total other income (expense)	5	7	11	14
Income (loss) before income taxes	(70)	32	(110)	8
Income tax expense (benefit)	0	1	3	3
Net income (loss)	$ (70)	$ 31	$ (113)	$ 5
Earnings (loss) per share:
Basic (in dollars per share)	$ (0.31)	$ 0.14	$ (0.50)	$ 0.02
Diluted (in dollars per share)	$ (0.31)	$ 0.14	$ (0.50)	$ 0.02
Passenger
Operating revenues:
Total operating revenues	$ 898	$ 950	$ 1,782	$ 1,795
Other
Operating revenues:
Total operating revenues	$ 31	$ 23	$ 59	$ 43