<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM UAL
CORPORATION'S STATEMENT OF CONSOLIDATED OPERATIONS FOR THE SIX MONTHS ENDED JUNE
30, 1999 AND CONDENSED STATEMENT OF CONSOLIDATED FINANCIAL POSITION AS OF JUNE
30, 1999 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL
STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000,000

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                           1,144
<SECURITIES>                                       231
<RECEIVABLES>                                    1,360
<ALLOWANCES>                                         0
<INVENTORY>                                        275
<CURRENT-ASSETS>                                 3,557
<PP&E>                                          20,061
<DEPRECIATION>                                   5,814
<TOTAL-ASSETS>                                  21,044
<CURRENT-LIABILITIES>                            6,001
<BONDS>                                          5,067
<PREFERRED-MANDATORY>                              100
<PREFERRED>                                          0
<COMMON>                                             1
<OTHER-SE>                                       4,796
<TOTAL-LIABILITY-AND-EQUITY>                    21,044
<SALES>                                              0
<TOTAL-REVENUES>                                 8,702
<CGS>                                                0
<TOTAL-COSTS>                                    8,123
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 184
<INCOME-PRETAX>                                  1,176
<INCOME-TAX>                                       423
<INCOME-CONTINUING>                                750
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      3
<CHANGES>                                            0
<NET-INCOME>                                       747
<EPS-BASIC>                                      13.22
<EPS-DILUTED>                                     6.30