CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Operating Revenue
Total Operating Revenue	$ 3,704	$ 2,897	$ 6,841	$ 5,129
Operating Expenses
Wages and benefits	1,165	782	2,292	1,586
Variable incentive pay	61	49	123	93
Aircraft fuel, including hedging gains and losses	700	615	1,381	1,180
Aircraft maintenance	240	129	460	251
Aircraft rent	64	46	126	93
Landing fees and other rentals	278	173	520	338
Contracted services	146	106	291	203
Selling expenses	105	84	205	161
Depreciation and amortization	199	128	393	254
Food and beverage service	97	67	182	125
Third-party regional carrier expense	69	64	133	118
Other	247	186	508	391
Special items - operating	56	146	147	180
Total Operating Expenses	3,427	2,575	6,761	4,973
Operating Income	277	322	80	156
Non-operating Income (Expense)
Interest income	22	24	48	41
Interest expense	(66)	(36)	(132)	(71)
Interest capitalized	9	6	21	12
Other - net	(4)	0	(12)	0
Total Non-operating Expense	(39)	(6)	(75)	(18)
Income Before Income Tax	238	316	5	138
Income tax expense (benefit)	66	96	(1)	50
Net Income	$ 172	$ 220	$ 6	$ 88
Basic earnings per share (in dollars per share)	$ 1.45	$ 1.74	$ 0.05	$ 0.70
Diluted earnings per share (in dollars per share)	$ 1.42	$ 1.71	$ 0.05	$ 0.69
Weighted Average Shares Outstanding used for computation:
Basic	118,847,000	126,337,000	120,979,000	126,153,000
Diluted	120,930,000	128,310,000	123,183,000	127,857,000
Passenger revenue
Operating Revenue
Total Operating Revenue	$ 3,355	$ 2,651	$ 6,163	$ 4,655
Passenger revenue | Passenger
Operating Revenue
Total Operating Revenue	3,355	2,651	6,163	4,655
Mileage Plan Revenue
Operating Revenue
Total Operating Revenue	571	464	1,094	876
Mileage Plan Revenue | Passenger
Operating Revenue
Total Operating Revenue	361	290	677	538
Mileage Plan Revenue | Mileage plan other revenue
Operating Revenue
Total Operating Revenue	210	174	417	338
Cargo and other revenue
Operating Revenue
Total Operating Revenue	139	72	261	136
Cargo and other revenue | Cargo and Freight
Operating Revenue
Total Operating Revenue	$ 139	$ 72	$ 261	$ 136