UAL Corp
All units in Millions or Millions USD	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018*	2019	2020
Income Statement
Passenger Revenue	16,932	13,788	13,408	12,893	14,473	15,343	17,268	18,317	18,435	14,197	20,236	32,511	32,583	33,122	33,762	32,785	31,457	32,404	37,706	39,625	11,805
Regional Affiliate Revenue	0	1,039	1,281	1,529	1,931	2,429	2,901	3,063	3,098	2,884	4,217	6,536	6,779	7,125	6,977	6,452	6,043	5,852	0	0	0
Total Revenue	20,023	17,396	15,822	14,928	16,391	17,379	19,340	20,143	20,194	16,335	23,325	37,110	37,152	38,279	38,901	37,864	36,556	37,736	41,303	43,259	15,355
Wages Salaries & Benefits	6,877	7,080	7,018	5,377	5,006	4,027	4,267	4,261	4,311	3,919	5,002	7,652	7,945	8,625	8,935	9,713	10,275	11,045	11,458	12,071	9,522
Aircraft Fuel Expense	2,511	2,476	1,921	2,072	2,943	4,032	4,824	5,003	7,722	4,204	6,687	12,375	13,138	12,345	11,675	7,522	5,813	6,913	9,307	8,953	3,153
Depreciation & Amortization	1,058	1,932	970	938	874	873	888	925	932	917	1,079	1,547	1,522	1,689	1,679	1,819	1,977	2,149	2,165	2,288	2,488
Net Interest Expense	301	420	530	472	424	444	521	404	411	558	783	929	812	762	713	644	572	586	569	598	1,013
Operating Expense	19,369	21,167	18,659	16,288	17,245	17,598	18,893	19,106	24,632	16,496	22,253	35,288	37,113	37,030	36,528	32,698	32,218	34,238	38,074	38,958	21,714
Operating Income (Loss)	654	(3,771)	(2,837)	(1,360)	(854)	(219)	447	1,037	(4,438)	(161)	976	1,822	39	1,249	2,373	5,166	4,338	3,498	3,229	4,301	6,359
Pretax Income (Loss)	431	(3,357)	(3,198)	(2,804)	(1,726)	(21,180)	22,889	695	(5,379)	(668)	253	845	(724)	539	1,128	4,219	3,819	2,999	2,648	3,914	(8,822)
Net Income (Loss)	50	(2,145)	(3,212)	(2,808)	(1,721)	(21,176)	22,876	403	(5,348)	(651)	253	840	(723)	571	1,132	7,340	2,263	2,131	2,122	3,009	(7,069)
Balance Sheet Asset
Cash & Short-term Investment	2,344	2,608	1,274	1,718	1,301	1,838	4,144	3,554	2,039	3,042	8,680	7,762	6,543	5,121	4,384	5,196	4,428	3,798	3,950	4,944	11,683
Restricted Cash & Short-term Investments	0	0	462	679	877	643	341	325	54	128	37	40	65	31	44	204	124	91	105	0	255
Total Current Assets	4,779	5,086	3,379	4,024	3,914	4,259	6,273	6,095	4,861	5,105	12,045	10,997	10,049	8,702	7,547	7,828	7,309	7,113	7,194	8,188	14,800
Total Assets	24,355	25,197	23,656	21,979	20,705	19,342	25,369	24,220	19,461	18,684	39,598	37,988	37,628	36,812	36,595	40,861	40,140	42,326	42,792	52,605	59,520
Balance Sheet Liabilities
Air Traffic Liability	1,454	1,183	1,021	1,330	1,361	1,575	1,669	1,918	1,530	1,492	2,998	3,114	3,321	N/A	3,701	3,753	3,730	3,876	4,381	4,819	4,833
Current Liability	6,509	8,066	3,991	6,112	6,461	5,234	7,945	7,979	7,281	6,473	12,645	11,394	10,626	12,107	12,508	12,414	12,286	12,676	13,212	14,943	14,943
Long-term Debt & Capital Lease Obligations, Less Current Maturities	6,949	8,565	700	163	301	1,400	8,803	7,521	7,199	7,227	12,470	11,424	11,232	10,824	10,692	10,400	10,740	12,699	13,349	13,369	25,056
Pension & Post Retirement Benefits	1,693	2,931	6,470	6,671	4,253	2,027	2,085	1,829	1,812	1,928	3,817	4,269	5,014	3,353	4,159	3,370	3,473	3,523	2,871	2,235	3,454
Retained Earnings (Accumulated deficit)	1,998	(199)	(3,417)	(6,225)	(7,946)	(29,122)	16	152	(5,199)	(5,956)	(5,703)	4,863	(5,586)	(5,015)	(3,883)	3,457	3,427	4,621	6,668	12,353	12,353
Total Stockholder Equity (deficit)	5,457	3,033	(2,483)	(5,916)	(7,680)	(25,560)	2,148	2,418	(2,465)	(2,811)	1,727	1,806	481	2,984	2,396	8,966	8,659	8,806	9,995	11,492	5,928
Cash Flow Statement
Net Cash Provided by (Used in) Operating Activity	2,472	(160)	(1,139)	1,001	99	1,079	1,562	2,134	(1,239)	966	1,907	2,408	935	1,444	2,634	5,992	5,542	3,413	6,146	6,879	(4,145)
Net Cash Provided by (Used in) Investing Activities	(2,521)	(1,969)	71	339	(296)	(291)	(250)	(2,560)	2,721	(80)	3,320	(1,799)	(1,975)	(2,022)	(2,331)	(2,607)	(3,238)	(3,930)	(4,455)	(4,560)	50
Net Cash Provided by (Used in) Financing activities	1,418	2,138	266	(404)	(72)	(110)	782	(2,147)	(702)	117	(200)	(2,432)	(454)	(972)	(1,596)	(2,495)	(3,213)	(195)	(1,483)	(1,250)	12,975
Payments on Long-term Debt and Capital Lease Obligation	(724)	(465)	(1,558)	(527)	(424)	(379)	(792)	(1,434)	(901)	(966)	(2,507)	(2,617)	(1,392)	(2,185)	(2,503)	(2,178)	(1,215)	(901)	(1,727)	(1,240)	(4,383)
Proceeds from Issuance of Long-term Debt	2,515	2,485	950	0	0	0	0	694	337	562	2,086	152	1,121	1,423	1,432	1,073	808	2,765	1,594	1,847	16,044
Net Increase (Decrease) in Cash	1,369	9	(802)	754	(417)	538	2,071	(2,573)	780	1,003	5,027	(1,823)	(1,476)	(1,550)	(1,218)	890	(909)	(712)	208	1,069	8,880
Operating Statistics
Regional Passengers								0	0	0	32,764	45,439	46,846	47,880	46,554	N/A	N/A	N/A	N/A	N/A	N/A
Regional ASM								16,000	16,200	18,000	23,827	33,091	32,530	32,347	31,916	N/A	N/A	N/A	N/A	N/A	N/A
Regional RPM								13,000	12,100	13,800	18,675	25,768	26,069	26,589	26,544	N/A	N/A	N/A	N/A	N/A	N/A
Mainline Passengers	85	75	69	66	71	67	69	68	63	56	65	96	94	91	91	96	101	108	158	162	58
Mainline ASM	175,485	164,849	148,827	136,630	145,361	140,300	143,095	141,890	135,861	122,737	145,738	219,437	216,330	213,007	214,105	219,989	224,692	234,576	275,262	284,999	122,804
Mainline RPM	126,933	116,635	109,460	104,464	115,198	114,272	117,470	117,399	110,061	100,475	122,182	181,763	179,416	178,578	179,015	183,642	186,181	193,444	230,155	239,360	73,883
Data Source:  SEC 10K Filings
*Note: In 2018, many airlines changed their accounting principles to conform to new standards, which lead to some significant changes in the numbers reported compared to previous years. For the sake of clarity, many airlines provided recast 2017 results in their 10-K reports that can be found in SEC’s EDGAR tool.