SUMMARY

This summary highlights information contained elsewhere in this joint proxy statement/prospectus and may not contain all the information that is important to you with respect to the merger and the other matters being considered at the UAL and Continental special stockholder meetings. UAL and Continental urge you to read the remainder of this joint proxy statement/prospectus carefully, including the attached Annexes, and the other documents to which we have referred you. See also the section entitled “Where You Can Find More Information” beginning on page 141. We have included page references in this summary to direct you to a more complete description of the topics presented below.

The Companies

UAL Corporation

UAL Corporation, a Delaware corporation, serves as the holding company for United Air Lines, Inc. (“United”). United, a wholly owned subsidiary of UAL Corporation, is one of the largest international carriers based in the United States. United operates approximately 3,400 flights a day to more than 230 U.S. domestic and international destinations from its hubs in Los Angeles, San Francisco, Denver, Chicago, Washington, D.C. and Tokyo and has key global air rights in the Asia-Pacific region, Europe and Latin America. United also is a founding member of Star Alliance, which overall offers 21,200 daily flights to 1,172 airports in 181 countries through its 28 member airlines. United’s 46,000 employees reside in every U.S. state and in many countries around the world.

UAL’s common stock is traded on the NASDAQ Global Select Market under the symbol “UAUA.”

The principal executive offices of UAL are located at 77 W. Wacker Drive, Chicago, IL 60601 and its telephone number is (312) 997-8000.

Continental Airlines, Inc.

Continental Airlines, Inc., a Delaware corporation, is the world’s fifth largest airline, as measured by the number of scheduled miles flown by revenue passengers in 2009. Continental, together with its wholly owned subsidiary, Continental Micronesia, Inc., and including regional flights operated on Continental’s behalf under capacity purchase agreements with other carriers, has more than 2,200 daily departures throughout the Americas, Europe and Asia, serving 117 domestic and 127 international destinations. Continental is also a member of Star Alliance, which overall offers 21,200 daily flights to 1,172 airports in 181 countries through its 28 member airlines. With more than 40,000 employees, Continental has hubs serving New York, Houston, Cleveland and Guam, and together with its regional partners, carries approximately 63 million passengers per year.

Continental’s common stock is traded on the New York Stock Exchange under the symbol “CAL.”

The principal executive offices of Continental are located at 1600 Smith Street, Dept. HQSEO, Houston, TX 77002 and its telephone number is (713) 324-2950.

JT Merger Sub Inc.

JT Merger Sub Inc., a wholly owned subsidiary of UAL Corporation, is a Delaware corporation that was formed on April 26, 2010 for the sole purpose of effecting the merger. In the merger, JT Merger Sub Inc. will be merged with and into Continental, with Continental surviving as a wholly owned subsidiary of UAL Corporation.

The Merger

A copy of the merger agreement is attached as Annex A to this joint proxy statement/prospectus. UAL and Continental encourage you to read the entire merger agreement carefully because it is the principal document governing the merger. For more information on the merger agreement, see the section entitled “The Merger Agreement” beginning on page 92.

Form of the Merger (see page 38)

Subject to the terms and conditions of the merger agreement, at the effective time of the merger, Merger Sub, a wholly owned subsidiary of UAL formed for the sole purpose of effecting the merger, will be merged with and into Continental. Continental will survive the merger as a wholly owned subsidiary of UAL. Upon completion of the merger, UAL will be the parent company of both Continental and United, and UAL’s name will be changed to United Continental Holdings, Inc. (“UCH”).

Merger Consideration (see page 92)

Continental stockholders will have the right to receive 1.05 shares of UAL common stock for each share of Continental common stock they hold at the effective time of the merger (the “exchange ratio”). The exchange ratio is fixed and will not be adjusted for changes in the market value of the common stock of Continental or UAL. As a result, the implied value of the consideration to Continental stockholders will fluctuate between the date of this joint proxy statement/prospectus and the effective date of the merger. Based on the closing price of UAL common stock on the NASDAQ on April 30, 2010, the last trading day before public announcement of the merger, the exchange ratio represented approximately $22.68 in value for each share of Continental common stock. Based on the closing price of UAL common stock on the NASDAQ on August     , 2010, the latest practicable trading day before the date of this joint proxy statement/prospectus, the exchange ratio represented approximately $             in value for each share of Continental common stock.

Material U.S. Federal Income Tax Consequences of the Merger (see page 107)

As a condition to the completion of the merger, each of Cravath, Swaine & Moore LLP, tax counsel to UAL, and Jones Day, tax counsel to Continental, will have delivered an opinion, dated as of the date this joint proxy statement/prospectus is first filed with the Securities and Exchange Commission (the “SEC”) and as of the closing date of the merger, that the merger will be treated for U.S. federal income tax purposes as a “reorganization” within the meaning of Section 368(a) of the Code and that each of UAL, Continental and Merger Sub will be a party to the reorganization within the meaning of Section 368(b) of the Code. A holder of Continental common stock will not recognize any gain or loss for U.S. federal income tax purposes upon the exchange of the holder’s shares of Continental common stock for shares of UAL common stock pursuant to the merger, except with respect to cash received in lieu of fractional shares of UAL common stock.

The tax opinions regarding the merger will not address any state, local or foreign tax consequences of the merger. The opinions will be based on certain assumptions and representations as to factual matters from UAL and Continental, as well as certain covenants and undertakings by UAL and Continental. If any of the assumptions, representations, covenants or undertakings is incorrect, incomplete, inaccurate or is violated in any material respect, the validity of the conclusions reached by counsel in their opinions would be jeopardized and the tax consequences of the merger could differ from those described in this joint proxy statement/prospectus. Neither UAL nor Continental is currently aware of any facts or circumstances that would cause the assumptions, representations covenants and undertakings to be incorrect, incomplete, inaccurate or violated in any material respect.

An opinion of counsel represents such counsel’s best legal judgment but is not binding on the Internal Revenue Service (the “IRS”) or any court, so there can be no certainty that the IRS will not challenge the conclusions reflected in the opinion or that a court would not sustain such a challenge.

You should consult your own tax advisor regarding the particular consequences to you of the merger.

Recommendation of the Board of Directors of UAL (see page 45)

After careful consideration, the UAL board of directors unanimously approved the merger agreement and UAL’s amended and restated certificate of incorporation and determined that the merger agreement and the transactions contemplated thereby, including the merger, the issuance of shares of UAL common stock to Continental stockholders pursuant to the merger and the adoption of UAL’s amended and restated certificate of incorporation, are in the best interests of UAL and its stockholders and that the adoption of UAL’s amended and restated certificate of incorporation is advisable. For more information regarding the factors considered by the UAL board of directors in reaching its decision to approve the merger agreement, to authorize the issuance of shares of UAL common stock to Continental stockholders pursuant to the merger and to approve, adopt and declare advisable UAL’s amended and restated certificate of incorporation, see the section entitled “The Merger—UAL’s Reasons for the Merger; Recommendation of the UAL Board of Directors.” The UAL board of directors unanimously recommends that UAL stockholders vote “FOR” the proposal to approve the issuance of shares of UAL common stock to Continental stockholders pursuant to the merger and “FOR” the proposal to adopt UAL’s amended and restated certificate of incorporation at the UAL special meeting.

Recommendation of the Board of Directors of Continental (see page 58)

After careful consideration, the Continental board of directors unanimously approved the merger agreement and determined that the merger agreement and the transactions contemplated thereby, including the merger, are advisable and in the best interests of Continental and its stockholders. For more information regarding the factors considered by the Continental board of directors in reaching its decision to approve and adopt the merger agreement and the merger, see the section entitled “The Merger—Continental’s Reasons for the Merger; Recommendation of the Continental Board of Directors.” The Continental board of directors unanimously recommends that Continental stockholders vote “FOR” the proposal to adopt the merger agreement at the Continental special meeting.

Opinions of UAL’s Financial Advisors (see page 47)

Each of J.P. Morgan Securities Inc. (“J.P. Morgan”) and Goldman, Sachs & Co. (“Goldman Sachs”) rendered its opinion to the board of directors of UAL that, as of May 2, 2010 and based upon and subject to the factors and assumptions set forth in their respective written opinions, the exchange ratio of 1.05 shares of UAL common stock to be issued in exchange for each share of Continental common stock pursuant to the merger was fair from a financial point of view to UAL.

The full text of the written opinions of J.P. Morgan and Goldman Sachs, both dated May 2, 2010, which set forth the assumptions made, procedures followed, matters considered and limitations on the review undertaken in connection with each opinion, are included in this joint proxy statement/prospectus as Annex B and Annex C, respectively. J.P. Morgan and Goldman Sachs provided their respective opinions for the information and assistance of UAL’s board of directors for purposes of its evaluation of the transactions contemplated by the merger agreement. Neither J.P. Morgan’s opinion nor Goldman Sachs’ opinion constitutes a recommendation to any holder of UAL capital stock as to how any such holder should vote with respect to the proposals to be considered at the UAL special meeting or any other matter. In addition, neither J.P. Morgan nor Goldman Sachs was requested to opine as to, and neither opinion in any manner addresses, UAL’s underlying business decision to proceed with or effect the merger.

Opinions of Continental’s Financial Advisors (see page 61)

Each of Lazard Frères & Co. LLC (“Lazard”) and Morgan Stanley & Co. Incorporated (“Morgan Stanley”), rendered its opinion to the board of directors of Continental that, as of May 2, 2010 and based upon and subject

to the assumptions, procedures, factors, qualifications and limitations set forth in their respective written opinions, the exchange ratio set forth in the merger agreement was fair from a financial point of view to the holders of shares of Continental common stock.

The full text of the written opinions of Lazard and Morgan Stanley, both dated May 2, 2010, which set forth the assumptions made, procedures followed, matters considered and limitations on the review undertaken in connection with each opinion, are included in this joint proxy statement/prospectus as Annex D and Annex E, respectively. Lazard and Morgan Stanley provided their respective opinions for the information and assistance of Continental’s board of directors for purposes of its evaluation of the transactions contemplated by the merger agreement. Neither Lazard’s opinion nor Morgan Stanley’s opinion constitutes a recommendation to any holder of Continental common stock as to how any such holder should vote with respect to the proposal to be considered at the Continental special meeting or any other matter. In addition, neither Lazard nor Morgan Stanley was requested to opine as to, and neither opinion in any manner addresses, Continental’s underlying business decision to proceed with or effect the merger.

Interests of UAL Directors and Executive Officers in the Merger (see page 72)

Executive officers and members of UAL’s board of directors have interests in the merger that may be different from, or in addition to, the interests of UAL stockholders generally. Each of the executive officers of UAL, other than Mr. Tilton, has an agreement with UAL that provides for severance benefits if such executive officer’s employment is terminated under certain circumstances following the merger.

In addition, upon completion of the merger, Mr. Tilton will step down as UAL’s president and chief executive officer, and he will become non-executive chairman of the board of directors of the combined company. Upon terminating his position as president and chief executive officer, Mr. Tilton is entitled to certain payments and benefits. As described in further detail below under the heading “—Board of Directors and Management Following the Merger,” some of UAL’s executive officers and members of UAL’s board of directors will continue to serve as officers or directors of the combined company upon completion of the merger.

Upon consummation of the merger, performance under the long-term incentive awards held by officers of UAL will be deemed to have been achieved at target as described below under “—Treatment of UAL Stock Options and Other Long-Term Incentive Awards.” Officers of UAL who become officers of the combined company are generally not expected to receive any accelerated vesting of any rights or benefits or accelerated payment of such benefits. The executive officers of UAL who are currently anticipated to experience a termination of employment in connection with the completion of the merger are expected to receive additional cash severance payments and other benefits (excluding the value of outstanding incentive awards) ranging from $3.8 million to $5.7 million, and the vesting of incentive awards with estimated values ranging from $2.5 million to $7.3 million. The foregoing amounts are based on certain assumptions described under “Interests of UAL Directors and Executive Officers in the Merger.”

The UAL board of directors was aware of these interests and considered them, among other matters, in approving the merger agreement and the transactions contemplated by the merger agreement and in recommending that you vote to approve the issuance of shares of UAL common stock to Continental stockholders pursuant to the merger and to adopt UAL’s amended and restated certificate of incorporation.

Interests of Continental Directors and Executive Officers in the Merger (see page 78)

Executive officers and members of Continental’s board of directors have interests in the merger that may be different from, or in addition to, the interests of Continental stockholders generally. Continental’s executive officers have agreements with Continental that provide for severance benefits if their employment is terminated

under certain circumstances following a change in control of Continental, such as the merger. In addition, following a change in control of Continental, such as will occur upon completion of the merger, certain of Continental’s compensation and benefit plans and arrangements provide for accelerated vesting of certain rights or benefits and accelerated payment of such benefits to its executive officers upon the termination of their employment under certain circumstances following such a change in control.

Additionally, as detailed below under “Board of Directors and Management Following the Merger,” some of Continental’s executive officers and members of Continental’s board of directors will continue to serve as officers or directors of the combined company upon completion of the merger. Officers of Continental who become officers of the combined company may receive upon the consummation of the merger reimbursement for excise taxes and, if the officer is eligible for retirement, early payment of outstanding long-term incentive awards. In addition, certain performance targets will be deemed satisfied under outstanding performance awards held by such officers as described below under “—Treatment of Continental Stock Options and Other Long-Term Incentive Awards.” Such officers are generally not expected to receive any other accelerated vesting of any rights or benefits or accelerated payment of such benefits. The executive officers of Continental who are currently anticipated to experience a termination of employment in connection with the completion of the merger are expected to receive additional cash severance payments and other benefits (excluding the value of outstanding incentive awards) ranging from $4.2 million to $4.4 million, the vesting of incentive awards with estimated values ranging from $4.4 million to $7.0 million, and reimbursements for excise taxes ranging from $2.6 million to $3.7 million. The foregoing amounts are based on certain assumptions described under “Interests of Continental Directors and Executive Officers in the Merger—Executive Officers.”

Restricted stock held by each non-management director of Continental who does not become a director of the combined company will automatically vest upon completion of the merger. Each non-management director holds 2,311 shares of such restricted stock, which was valued at approximately $50,000 on June 9, 2010, the date of grant.

The Continental board of directors was aware of these interests and considered them, among other matters, in approving the merger agreement and in recommending that you vote for the proposal to adopt the merger agreement.

Board of Directors and Management Following the Merger (see page 85)

Immediately following the effective time of the merger, the board of directors of the combined company will consist of sixteen members, including: (i) six of the independent directors of UAL immediately prior to the merger, to be selected by UAL, (ii) six of the independent directors of Continental immediately prior to the merger, to be selected by Continental, (iii) Mr. Tilton (the current chairman of the board, president and chief executive officer of UAL), (iv) Mr. Smisek (the current chairman of the board, president and chief executive officer of Continental), (v) the UAL director immediately prior to the merger who was elected by the holder of the Class Pilot MEC Junior Preferred Stock and (vi) the UAL director immediately prior to the merger who was elected by the holder of the Class IAM Junior Preferred Stock. As of the date of this joint proxy statement/prospectus, neither UAL nor Continental has made a determination as to which independent directors to appoint to the board of directors of the combined company. The fees and/or other remuneration to be provided to the non-employee directors of the combined company have not been determined.

Upon completion of the merger, Mr. Tilton will serve as non-executive chairman of the board of directors of the combined company through December 31, 2012 or the second anniversary of the closing of the merger, whichever is later, and Mr. Smisek will serve as the chief executive officer of the combined company. Mr. Smisek will also become executive chairman of the board of directors of the combined company upon Mr. Tilton’s ceasing to be non-executive chairman. The combined company’s executive management team is expected to include Zane Rowe of Continental as chief financial officer, Peter McDonald of UAL as chief

operating officer, Thomas Sabatino of UAL as general counsel, James Compton of Continental as chief marketing officer, Keith Halbert of UAL as chief information officer, Michael Bonds of Continental to lead human resources and labor relations, Jeff Foland of UAL to lead the combined airline’s loyalty program and Irene Foxhall of Continental to oversee communications and government affairs.

The Integration Steering Committee is led by Mr. Tilton and Mr. Smisek and includes Mr. McDonald, UAL’s executive vice president and chief administrative officer, Kathryn Mikells, UAL’s executive vice president and chief financial officer, Mr. Compton, Continental’s executive vice president and chief marketing officer, and Mr. Rowe, Continental’s executive vice president and chief financial officer. The Integration Steering Committee will be focused on defining the process for integrating UAL and Continental.

Treatment of UAL Stock Options and Other Long-Term Incentive Awards (see page 87)

The board of directors of UAL has determined that the merger should be considered a change of control for purposes of UAL’s 2008 Incentive Compensation Plan (the “ICP”). In addition, the Human Resources Subcommittee of the UAL board of directors amended the terms of all outstanding equity-based awards granted under the 2006 Management Equity Incentive Plan (the “MEIP”) to provide that, except in certain circumstances outlined below, such awards will become immediately vested in full upon completion of the merger. As a result, except as set forth below, upon completion of the merger, all outstanding equity-based awards granted under the ICP and the MEIP will become immediately vested in full, and all outstanding long-term cash incentive awards will be deemed to have been achieved at target and will be paid out on a prorated basis.

Mr. Tilton has waived all accelerated vesting of his equity-based awards and the vesting of such awards will continue to be based on his service as non-executive chairman of the board of the combined company following completion of the merger. Furthermore, in consideration for the protections provided under the Management Retention Agreements with many of UAL’s other officers (including all of UAL’s executive officers other than Mr. Tilton), such officers have waived their rights to accelerated vesting of all their outstanding long-term incentive awards upon completion of the merger. Instead, stock options, restricted shares, restricted stock units and long-term cash incentive awards held by these officers will remain unvested upon completion of the merger and will vest following the merger only if the officer remains employed by the combined company through the applicable vesting date or if the officer’s employment is terminated by the combined company without “cause” or by the officer for “good reason” (each, as defined in the Management Retention Agreements). Further, with respect to officers who are party to Management Retention Agreements, upon the completion of the merger, (1) restricted shares and restricted stock units will be converted into a fixed amount in cash based on the average closing price of UAL common stock for the 20 trading days preceding the completion of the merger and (2) performance under the long-term cash incentive awards will be deemed to have been achieved at the target level and will be paid in full upon vesting, rather than on a prorated basis.

Treatment of Continental Stock Options and Other Long-Term Incentive Awards (see page 88)

Stock Options and Restricted Stock. Upon completion of the merger, (i) each outstanding option to purchase shares of Continental common stock and (ii) all Continental restricted shares granted to non-management members of the board of directors of Continental will be converted pursuant to the merger agreement into, respectively, (x) a stock option to purchase shares of UAL common stock and (y) restricted common stock of UAL on the same terms and conditions as were in effect immediately prior to the completion of the merger based on the exchange ratio. Outstanding stock options granted under the Continental Incentive Plan 2000, the Continental 1998 Stock Incentive Plan, and the Continental 1997 Stock Incentive Plan will vest in full upon completion of the merger.

LTIP Awards and Profit Based RSUs. Upon completion of the merger, for each performance period that began prior to the effective date of the merger and that is still open on such date, (i) the outstanding Continental long-term incentive plan (“LTIP”) awards will be deemed satisfied at the stretch performance level, and (ii) the

Continental Profit Based RSU performance targets will be deemed satisfied at the higher of 150% and actual performance. These awards will remain subject to continued employment by the participant and continue to be paid on the normal payment date unless the payment is accelerated upon the participant’s (x) termination of employment under certain circumstances following the merger or (y) retirement eligibility.

2004 Employee Stock Purchase Plan. At the effective time of the merger, the Continental 2004 Employee Stock Purchase Plan will terminate and any shares of Continental common stock purchased thereunder will be converted into shares of UAL common stock based on the exchange ratio.

Regulatory Clearances Required for the Merger (see page 86)

UAL and Continental have each agreed to take actions in order to obtain regulatory clearance required to consummate the merger. Regulatory clearance includes expiration or termination of the required waiting period under the Hart-Scott-Rodino Antitrust Improvement Act of 1976, as amended, and the rules and regulations promulgated thereunder (the “HSR Act”), following required notifications and review by the Antitrust Division of the U.S. Department of Justice (the “Antitrust Division”). On May 7, 2010, each of UAL and Continental filed its notification under the HSR Act. On June 7, 2010, the waiting period under the HSR Act was extended by the Antitrust Division’s issuance of a request for additional information and documentary material (a “Second Request”). The parties are responding to the Second Request and currently expect the closing of the merger to occur in the fourth quarter of 2010. UAL and Continental filed a merger notification with the European Commission on June 21, 2010. On July 27, 2010, the European Commission approved the merger.

UAL and Continental have also filed notifications with competition authorities in Canada, Brazil, Mexico, Russia and Japan. On July 2, 2010, the Canadian Competition Bureau issued a No-Action Letter. On July 30, 2010, the Russian Competition Authority approved the merger. In addition, in order to complete the merger, UAL and Continental must obtain approvals or authorizations from various federal, state and local regulatory and transportation agencies, including the U.S. Department of Transportation (the “DOT”) and the Federal Aviation Administration (the “FAA”), as well as certain foreign regulatory authorities, except where the failure to obtain any such approval or authorization will not reasonably be expected to have a material adverse effect on either UAL or Continental. While UAL and Continental expect to obtain all required regulatory clearances, we cannot assure you that these regulatory clearances will be obtained or that the granting of these regulatory clearances will not involve the imposition of additional conditions on the completion of the merger, including the requirement to divest assets, or require changes to the terms of the merger agreement. These conditions or changes could result in the conditions to the merger not being satisfied.

Amended and Restated Certificate of Incorporation of UAL (see page 71)

The UAL board of directors has approved, subject to stockholder approval and completion of the merger, an amended and restated certificate of incorporation to (i) change UAL’s name to “United Continental Holdings, Inc.,” (ii) provide that the board of directors may not amend, alter or repeal the sections of the bylaws relating to (1) Mr. Tilton’s service as non-executive chairman of the board and Mr. Smisek’s service as chief executive officer until the later of December 31, 2012 and two years after the effective date of the merger and (2) Mr. Smisek’s succession to Mr. Tilton as chairman of the board of the combined company and (iii) provide for the indemnification of employees (other than officers) and agents of the combined company to the extent permitted by Delaware law and at the sole discretion of any of the chief executive officer, the president, the chief financial officer or the general counsel of the combined company. The form of amended and restated certificate of incorporation is included in this joint proxy statement/prospectus as Annex F. The adoption of the amended and restated certificate of incorporation is a condition to completion of the merger. In the event this proposal is approved by UAL stockholders, but the merger is not completed, the amended and restated certificate of incorporation will not become effective.

UAL’s restated certificate of incorporation currently contains a 5% ownership limitation provision to protect UAL’s ability to utilize its NOL carryforwards for federal income tax purposes. This 5% ownership limitation provision provides that, prior to February 1, 2014 or such later date as may be approved by UAL’s board of directors (or earlier in certain circumstances), any attempted transfer of UAL’s common stock (i) by or to any person or group holding shares representing 5% or more of UAL’s outstanding common stock (a “5% stockholder”) or (ii) to any person or group to the extent that, as a result of such transfer, such person or group would become a 5% stockholder of UAL without the advance written approval of UAL’s board of directors, shall be prohibited and void. Upon completion of the merger, the amended and restated certificate of incorporation of the combined company will also contain this 5% ownership limitation provision. Holders of Continental common stock are not currently subject to any similar type of limitation.

Expected Timing of the Merger

UAL and Continental currently expect the closing of the merger to occur in the fourth quarter of 2010. However, the merger is subject to various regulatory clearances and the satisfaction or waiver of other conditions as described in the merger agreement, and it is possible that factors outside the control of UAL and Continental could result in the merger being completed at an earlier time, a later time or not at all.

Conditions to Completion of the Merger (see page 102)

The obligations of UAL and Continental to complete the merger are subject to the satisfaction of the following conditions:

In addition, each of UAL’s and Continental’s obligations to effect the merger is subject to the satisfaction or waiver of the following additional conditions:

No Solicitation of Alternative Proposals (see page 96)

The merger agreement precludes UAL and Continental from soliciting or engaging in discussions or negotiations with a third party with respect to a proposal for a competing transaction, including the acquisition of a significant interest in UAL’s or Continental’s common stock or assets. However, if UAL or Continental receives an unsolicited proposal from a third party for a competing transaction that UAL’s or Continental’s board of directors, as applicable, among other things, determines in good faith (after consultation with its legal and financial advisors) (i) is reasonably likely to lead to a proposal that is superior to the merger and (ii) the failure to enter discussions regarding such proposal would be a breach of its fiduciary obligations under applicable law, UAL or Continental, as applicable, may furnish non-public information to and enter into discussions with, and only with, that third party regarding such competing transaction.

Termination of the Merger Agreement (see page 103)

UAL and Continental may mutually agree to terminate the merger agreement at any time. Either company may also terminate the merger agreement if the merger is not consummated by December 31, 2010, subject to extension by mutual agreement of the parties or in the event that certain regulatory clearances have not yet been obtained, provided that in no event shall such extension be to a date that is later than September 30, 2011. See the section entitled “The Merger Agreement—Termination of the Merger Agreement” for a discussion of these and other rights of each of UAL and Continental to terminate the merger agreement.

Termination Fees and Expenses (see page 104)

Generally, all fees and expenses incurred in connection with the merger agreement and the transactions contemplated by the merger agreement will be paid by the party incurring those expenses, subject to the specific exceptions discussed in this joint proxy statement/prospectus where UAL or Continental, as the case may be, may be required to pay a termination fee of $175 million. See the section entitled “The Merger Agreement—Termination Fees and Expenses” for a discussion of the circumstances under which such termination fee will be required to be paid.

Accounting Treatment (see page 110)

UAL prepares its financial statements in accordance with accounting principles generally accepted in the United States of America, which is referred to as GAAP. The merger will be accounted for using the acquisition method of accounting. UAL will be treated as the acquirer for accounting purposes.

ShareGift USA’s Charitable Donation Program (see page 111)

Continental has made arrangements to enable Continental stockholders to donate some or all of the merger consideration to be received by them upon consummation of the merger to ShareGift USA.

ShareGift USA is a nonprofit charity recognized as exempt from tax by IRS under Section 501(c)(3) of the Code that will distribute the merger consideration donated by Continental stockholders (or the proceeds from the sale of any donated merger consideration) to a variety of recognized U.S. charities. ShareGift USA will aggregate all donations from Continental stockholders and distribute them to charitable institutions.

If you are a Continental stockholder and a U.S. taxable investor, you may be eligible for a tax deduction should you choose to participate in ShareGift USA’s program. Please consult your tax advisor accordingly.

No Appraisal Rights (see page 136)

Under Delaware law, neither the holders of shares of UAL common stock nor the holders of shares of Continental common stock are entitled to appraisal rights in connection with the merger.

Comparison of Stockholder Rights and Corporate Governance Matters (see page 122)

Continental stockholders receiving merger consideration will have different rights once they become stockholders of the combined company due to differences between the governing corporate documents of Continental and the proposed governing corporate documents of the combined company. These differences are described in detail under the section entitled “Comparison of Rights of UCH and Continental Stockholders.”

Listing of Shares of UAL Common Stock; Delisting and Deregistration of Shares of Continental Common Stock (see page 89)

It is a condition to the completion of the merger that the shares of UAL common stock to be issued to Continental stockholders pursuant to the merger be authorized for listing on the NYSE or NASDAQ, as reasonably agreed upon by UAL and Continental, at the effective time of the merger. Upon completion of the merger, shares of Continental common stock currently listed on the NYSE will cease to be listed on the NYSE and will be subsequently deregistered under the Exchange Act.

The Meetings

The UAL Special Meeting (see page 29)

The special meeting of UAL stockholders will be held at the United Airlines Education and Training Center, 1200 East Algonquin Road, Elk Grove Village, Illinois, on September 17, 2010, at 10:00 a.m., local time. The special meeting of UAL stockholders is being held to consider and vote on:

Completion of the merger is conditioned on approval of the issuance of shares of UAL common stock to Continental stockholders pursuant to the merger and the adoption of UAL’s amended and restated certificate of incorporation.

Only holders of record of UAL capital stock at the close of business on August 12, 2010, the record date for the UAL special meeting, are entitled to receive notice of, and to vote at, the UAL special meeting or any adjournments or postponements thereof. At the close of business on the record date, 168,452,800 shares of UAL capital stock were issued and outstanding, approximately 0.11% of which were owned and entitled to be voted by UAL directors and executive officers and their affiliates. We currently expect that UAL’s directors and executive officers will vote their shares in favor of the issuance of shares of UAL common stock to Continental stockholders pursuant to the merger and the adoption of UAL’s amended and restated certificate of incorporation, although none of them has entered into any agreement obligating them to do so.

You may cast one vote for each share of UAL capital stock you own. The proposal to approve the issuance of shares of UAL common stock to Continental stockholders pursuant to the merger requires the affirmative vote of holders of a majority of the outstanding shares of UAL capital stock present in person or represented by proxy and entitled to vote on the proposal. The proposal to adopt UAL’s amended and restated certificate of incorporation requires the affirmative vote of holders of a majority of the outstanding shares of UAL capital stock entitled to vote on the proposal. If necessary or appropriate to solicit additional proxies if there are not sufficient votes to approve the proposal for the issuance of shares of UAL common stock to Continental stockholders pursuant to the merger or the proposal to adopt UAL’s amended and restated certificate of incorporation, the holders of a majority of the shares entitled to vote and present in person or by proxy, whether or not a quorum is present, may adjourn the meeting to another time or place without further notice unless the adjournment is for more than 30 days or if after the adjournment a new record date is fixed for the adjourned meeting, in which case a notice of the adjourned meeting shall be given to each stockholder of record entitled to vote at the meeting.

The Continental Special Meeting (see page 34)

The special meeting of Continental stockholders is scheduled to be held at The Crowne Plaza Hotel, 1700 Smith Street, Houston, Texas on September 17, 2010 at 10:00 a.m., local time. The special meeting of Continental’s stockholders is being held in order to consider and vote on:

Only holders of record of Continental common stock at the close of business on August 12, 2010, the record date for the Continental special meeting, are entitled to notice of, and to vote at, the Continental special meeting or any adjournments or postponements thereof. At the close of business on the record date, 140,557,171 shares of Continental common stock were issued and outstanding, approximately 0.05% of which were held by Continental’s directors and executive officers. We currently expect that Continental’s directors and executive officers will vote their shares in favor of the merger proposal, although no director or executive officer has entered into any agreement obligating him or her to do so.

You may cast one vote for each share of Continental common stock you own. The proposal to adopt the merger agreement requires the affirmative vote of the holders of a majority of the outstanding shares of Continental common stock entitled to vote on the proposal. If necessary or appropriate to solicit additional proxies if there are not sufficient votes to approve the proposal to adopt the merger agreement, the Continental stockholders, by a majority of the votes cast at the meeting by the holders of Continental common stock entitled to vote and present in person or by proxy, whether or not a quorum is present, may adjourn the meeting to another time or place without further notice unless the adjournment is for more than 30 days or if after the adjournment a new record date is fixed for the adjourned meeting, in which case a notice of the adjourned meeting shall be given to each stockholder of record entitled to vote at the meeting.

Summary Historical Consolidated Financial Data

Summary Consolidated Historical Financial Data of UAL

The following statement of operations data for the years ended December 31, 2009, 2008 and 2007 and the balance sheet data as of December 31, 2009 and 2008 have been derived from the audited consolidated financial statements of UAL contained in its Annual Report on Form 10-K for the fiscal year ended December 31, 2009, which are incorporated into this document by reference. The statement of operations data for the eleven month period ended December 31, 2006, the one month period ended January 31, 2006 and the year ended December 31, 2005, and the balance sheet data as of December 31, 2007, 2006 and 2005 have been derived from UAL’s audited consolidated financial statements for such periods, which have not been incorporated into this document by reference. The balance sheet data as of January 31, 2006 have been derived from the notes to UAL’s audited consolidated financial statements for the year ended December 31, 2006, which have not been incorporated into this document by reference.

The statement of operations data for the six months ended June 30, 2010 and 2009, and the balance sheet data as of June 30, 2010 have been derived from UAL’s unaudited interim consolidated financial statements contained in its Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2010, which are incorporated into this document by reference. The balance sheet data as of June 30, 2009 has been derived from UAL’s unaudited consolidated financial statements for such period, which have not been incorporated into this document by reference. These financial statements are unaudited, but, in the opinion of UAL’s management, contain all adjustments necessary to present fairly UAL’s financial position, results of operations and cash flows for the periods indicated.

You should read this selected historical financial data together with the financial statements that are incorporated by reference into this document and their accompanying notes and management’s discussion and analysis of financial condition and results of operations of UAL contained in such reports.

Upon emergence from Chapter 11, UAL adopted fresh start reporting in accordance with accounting principles related to reorganizations. The adoption of fresh start reporting resulted in UAL becoming a new entity for financial reporting purposes. Accordingly, UAL’s Consolidated Financial Statements on or after February 1, 2006 are not comparable to UAL’s Consolidated Financial Statements prior to that date. References to “Successor Company” refer to UAL on or after February 1, 2006, after giving effect to the adoption of fresh start reporting. References to “Predecessor Company” refer to UAL prior to February 1, 2006.

During the first quarter of 2010, UAL increased its estimate of the number of frequent flyer miles expected to expire, which UAL refers to as “breakage.” In conjunction with this change in estimate, UAL also adopted a change to the accounting methodology used to recognize breakage of frequent flyer miles. Both the change in estimate and methodology have been applied prospectively effective January 1, 2010. The new accounting method recognizes breakage as a component of the weighted average redemption rate on actual redemptions as compared to our prior method which recognized a pool of breakage dollars over an estimated redemption period. UAL’s management believes that this is a preferable change to the accounting methodology for breakage because breakage will be recognized as a component of the rate at which actual miles are redeemed.

Statement of Operations Data of UAL

(In millions, except per share data)

Balance Sheet Data of UAL

(In millions)

Summary Consolidated Historical Financial Data of Continental

The following statement of operations data for the years ended December 31, 2009, 2008 and 2007 and the balance sheet data as of December 31, 2009 and 2008 have been derived from the audited consolidated financial statements of Continental contained in its Annual Report on Form 10-K for the fiscal year ended December 31, 2009, which are incorporated into this document by reference. The statement of operations data for the years ended December 31, 2006 and 2005 and the balance sheet data as of December 31, 2007, 2006 and 2005 have been derived from Continental’s audited consolidated financial statements for such years, which have not been incorporated into this document by reference.

The statement of operations data for the six months ended June 30, 2010 and 2009 and the balance sheet data as of June 30, 2010 and 2009 have been derived from Continental’s unaudited interim consolidated financial statements contained in its Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2010, which is incorporated into this document by reference. These financial statements are unaudited, but, in the opinion of Continental’s management, contain all adjustments necessary to present fairly Continental’s financial position, results of operations and cash flows for the period indicated.

You should read this selected historical financial data together with the financial statements that are incorporated by reference into this document and their accompanying notes and management’s discussion and analysis of financial condition and results of operations of Continental contained in such reports.

Statement of Operations Data of Continental

(In millions, except per share data)

Balance Sheet Data of Continental

(In millions)