Statements of Consolidated Operations - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	[1]
Operating revenue:
Passenger revenue	$ 8,149	$ 7,653
Cargo	293	238
Other operating revenue	590	535
Total operating revenue	9,032	8,426
Operating expense:
Salaries and related costs	2,726	2,636
Aircraft fuel	1,965	1,560
Regional capacity purchase	619	536
Landing fees and other rent	558	544
Depreciation and amortization	541	518
Aircraft maintenance materials and outside repairs	440	454
Distribution expenses	342	319
Aircraft rent	127	179
Special charges (Note 10)	40	51
Other operating expenses	1,398	1,309
Total operating expenses	8,756	8,106
Operating income	276	320
Nonoperating income (expense):
Interest expense	(176)	(162)
Interest capitalized	19	23
Interest income	17	11
Miscellaneous, net	48	(42)
Total nonoperating expense, net	(92)	(170)
Income before income taxes	184	150
Income tax expense	37	51
Net income	$ 147	$ 99
Earnings per share, basic and diluted	$ 0.52	$ 0.32
United Airlines, Inc.
Operating revenue:
Passenger revenue	$ 8,149	$ 7,653
Cargo	293	238
Other operating revenue	590	535
Total operating revenue	9,032	8,426
Operating expense:
Salaries and related costs	2,726	2,636
Aircraft fuel	1,965	1,560
Regional capacity purchase	619	536
Landing fees and other rent	558	544
Depreciation and amortization	541	518
Aircraft maintenance materials and outside repairs	440	454
Distribution expenses	342	319
Aircraft rent	127	179
Special charges (Note 10)	40	51
Other operating expenses	1,397	1,309
Total operating expenses	8,755	8,106
Operating income	277	320
Nonoperating income (expense):
Interest expense	(176)	(162)
Interest capitalized	19	23
Interest income	17	11
Miscellaneous, net	48	(41)
Total nonoperating expense, net	(92)	(169)
Income before income taxes	185	151
Income tax expense	38	51
Net income	$ 147	$ 100

[1] Amounts adjusted due to the adoption of Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers (Topic 606) and Accounting Standards Update No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost. See Note 1 to the financial statements contained in Part I, Item 1 of this report for additional information.