(To Prospectus Dated December 1, 2008)
||Filed pursuant to Rule 424(b)(3)
Registration No. 333-155794
Pursuant to the distribution agreements, dated December 1, 2008, between UAL Corporation (the
Company) and J.P. Morgan Securities Inc. (J.P. Morgan) and Morgan Stanley & Co. Incorporated
(MS), respectively, which have been filed as exhibits to the Companys current report on Form 8-K
filed with the Securities and Exchange Commission on December 1, 2008 and are incorporated by
reference herein, during the period from December 1, 2008 through January 12, 2009, the Company
sold 15,232,738 shares of its common stock, par value $0.01 per share, including 11,208,438 shares
through J.P. Morgan and 4,024,300 shares through MS, each as its distribution agent, resulting in
gross proceeds to the Company of $124,493,694 and $47,693,996, respectively. The aggregate gross
sales commission to the distribution agents through January 12, 2009 has been $3,443,754. The
aggregate net proceeds from such sales are approximately $168,217,420 after deducting related
expenses, including commission to the distribution agents. The Companys common stock is listed on
The NASDAQ Global Select Market under the symbol UAUA. The last reported sale price of the
Companys common stock on January 12, 2009 was $11.65 per share.
This prospectus supplement should be read in conjunction with, and may not be delivered or
utilized without, the prospectus, dated December 1, 2008, and the prospectus supplement, dated
December 1, 2008.
Neither the Securities and Exchange Commission nor any state securities commission has
approved or disapproved of these securities or passed upon the adequacy or accuracy of this
prospectus supplement or the accompanying prospectus. Any representation to the contrary is a
The date of this prospectus supplement is January 21, 2009.