Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating Revenue:
Passenger	$ 8,765	$ 8,178
Cargo	202	163
Other	1,001	760
Total operating revenue	9,968	9,101
Operating Expense:
Salaries and related costs	2,584	2,386
Aircraft fuel and related taxes	1,856	1,482
Regional carriers expense, excluding fuel	856	864
Depreciation and amortization	610	537
Contracted services	544	505
Ancillary businesses and refinery	493	292
Aircraft maintenance materials and outside repairs	435	432
Passenger commissions and other selling expenses	427	404
Landing fees and other rents	373	361
Passenger service	263	234
Profit sharing	183	151
Aircraft rent	94	84
Other	410	370
Total operating expense	9,128	8,102
Operating Income	840	999
Non-Operating Expense:
Interest expense, net	(102)	(94)
Unrealized gain/(loss) on investments, net	18	0
Miscellaneous, net	(38)	(56)
Total non-operating expense, net	(122)	(150)
Income Before Income Taxes	718	849
Income Tax Provision	(171)	(288)
Net Income	$ 547	$ 561
Basic Earnings Per Share (in USD per share)	$ 0.78	$ 0.77
Diluted Earnings Per Share (in USD per share)	0.77	0.77
Cash Dividends Declared Per Share (in USD per share)	$ 0.31	$ 0.20
Comprehensive Income	$ 487	$ 626