CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating Revenues
Passenger, Mainline	$ 927	$ 901
Passenger, Regional	206	186
Total passenger revenue	1,133	1,087
Freight and mail	24	23
Other - net	190	159
Total Operating Revenues	1,347	1,269
Operating Expenses
Wages and benefits	336	306
Variable incentive pay	32	26
Aircraft fuel, including hedging gains and losses	167	235
Aircraft maintenance	68	63
Aircraft rent	29	26
Landing fees and other rentals	80	71
Contracted services	60	52
Selling expenses	49	53
Depreciation and amortization	88	76
Food and beverage service	31	25
Regional Carrier Expense	23	15
Other	94	83
Total Operating Expenses	1,057	1,031
Operating Income	290	238
Nonoperating Income (Expense)
Interest income	6	5
Interest expense	(13)	(11)
Interest capitalized	8	8
Other - net	1	0
Nonoperating Income (Expense) Total	2	2
Income before income tax	292	240
Income tax expense	108	91
Net Income	$ 184	$ 149
Basic Earnings Per Share (usd per share)	$ 1.47	$ 1.13
Diluted Earnings Per Share (usd per share)	$ 1.46	$ 1.12
Shares used for computation:
Basic shares (shares)	124,550	131,120
Diluted shares (shares)	125,328	132,230
Cash dividend declared per share (usd per share)	$ 0.275	$ 0.20