Filed by AMR Corporation

Commission File No. 1-8400

Pursuant to Rule 425 Under the Securities Act of 1933

And Deemed Filed Pursuant to Rule 14a-12

Under the Securities Exchange Act of 1934

Subject Company: US Airways Group, Inc.

Commission File No. 001-8444

“Bottom line: This merger is about better airline service in the U.S.” Scott McCartney, Columnist, The Wall Street Journal (2/14/13) “Today’s announcement proves that everyone benefits when labor has a seat at the table. The new American will provide job security and fair compensation for all employees and another great option for the flying public. Flight attendants are eager to help build a strong and competitive airline and restore American’s prominence.” Laura Glading, President, Association Of Professional Flight Attendants (2/14/13) “An expanded AA-US would be able to add more connections between cities, thus increasing its utility and appeal to travelers — and increasing competition and consumer choice.” Henry Harteveldt, Travel Industry Analyst, Hudson Crossing (8/9/12) “A combination would create a powerful competitor to United and Delta for domestic as well as international routes.” Editorial, Chicago Tribune (4/27/12) MORE CHOICES THE NEW AMERICAN IS ARRIVING American Airlines & US Airways. Together, Bringing Consumers More Choice. American Airlines & US Airways are coming together to create a premier global carrier that will bring more competition to the skies, offering new consumer benefits through an expanded global network. Our combination provides a path to improved compensation and benefits and greater long-term opportunities for our employees. And as the new American Airlines, we expect to maintain all existing hubs and expand service, which will make our communities stronger. www.newAmericanarriving.com American Airlines and the Flight Symbol logo are marks of American Airlines, Inc. © 2013 American Airlines, Inc. All rights reserved. ©2013 US Airways, Inc. American and US Airways expect to file documents with the SEC regarding the proposed transaction. Investors and security holders are urged to read these documents carefully and in their entirety when they become available because they will contain important information about the proposed transaction. US Airways, American and certain of their respective directors, executive officers and certain members of management may be deemed to be participants in the solicitation of proxies from the stockholders of US Airways in connection with the proposed transaction. Information about the directors and executive officers of American and US Airways is set forth in the companies’ filings with the SEC, including their respective Annual Reports on Form 10-K. Documents filed with the SEC by American and US Airways are available at the SEC’s website at http://www.sec.gov. Copies of the documents filed with the SEC by US Airways can also be obtained free of charge on US Airways’ website at www. usairways.com. Copies of the documents filed with the SEC by American can be obtained free of charge on American’s website at www.aa.com. Also see www.newAmericanarriving.com for more important information about the proposed transaction.

Additional Information and Where To Find It

This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. The proposed merger transaction between AMR Corporation (“AMR”) and US Airways Group, Inc. (“US Airways”) will be submitted to the stockholders of US Airways for their consideration. AMR expects to file with the Securities and Exchange Commission (“SEC”) a registration statement on Form S-4 that will include a prospectus of AMR and a proxy statement of US Airways, and US Airways expects to file with the SEC a definitive proxy statement on Schedule 14A. AMR and US Airways also plan to file other documents with the SEC regarding the proposed transaction. INVESTORS AND SECURITY HOLDERS OF US AIRWAYS ARE URGED TO READ THE PROXY STATEMENT, PROSPECTUS AND OTHER RELEVANT DOCUMENTS THAT WILL BE FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Investors and security holders will be able to obtain free copies of the proxy statement, prospectus and other documents containing important information about AMR and US Airways, once such documents are filed with the SEC, through the website maintained by the SEC at http://www.sec.gov. Copies of the documents filed with the SEC by US Airways, when and if available, can be obtained free of charge on US Airways’ website at www.usairways.com or by directing a written request to US Airways Group, Inc., 111 West Rio Salado Parkway, Tempe, Arizona 85281, Attention: Vice President, Legal Affairs. Copies of the documents filed with the SEC by AMR, when and if available, can be obtained free of charge on AMR’s website at www.aa.com or by directing a written request to AMR Corporation, P.O. Box 619616, MD 5675, Dallas/Fort Worth International Airport, Texas 75261-9616, Attention: Investor Relations or by emailing investor.relations@aa.com.

US Airways, AMR and certain of their respective directors, executive officers and certain members of management may be deemed to be participants in the solicitation of proxies from the stockholders of US Airways in connection with the proposed transaction. Information about the directors and executive officers of US Airways is set forth in its proxy statement for its 2012 annual meeting of stockholders, which was filed with the SEC on April 27, 2012. Information about the directors and executive officers of AMR is set forth in its Annual Report on Form 10-K for the fiscal year ended December 31, 2011, which was filed with the SEC on February 15, 2012. These documents can be obtained free of charge from the sources indicated above. Other information regarding the participants in the proxy solicitation and a description of their direct and indirect interests, by security holdings or otherwise, will be contained in the prospectus and proxy statement and other relevant materials when and if filed with the SEC in connection with the proposed transaction.

Cautionary Statement Regarding Forward-Looking Statements

This document includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements may be identified by words such as “may,” “will,” “expect,” “intend,” “anticipate,” “believe,” “estimate,” “plan,” “project,” “could,” “should,” “would,” “continue,” “seek,” “target,” “guidance,” “outlook,” “forecast” and other similar words. These forward-looking statements are based on AMR’s and US Airways’ current objectives, beliefs and expectations, and they are subject to significant risks and uncertainties that may cause actual results and financial position and timing of certain events to differ materially from the information in the forward-looking statements. The following factors, among others, could cause actual results and financial position and timing of certain events to differ materially from those described in the forward-looking statements: failure of a proposed transaction to be implemented; the challenges and costs of closing, integrating, restructuring and achieving anticipated synergies; the ability to retain key employees; and other economic, business, competitive, and/or regulatory factors affecting the businesses of US Airways and AMR generally, including those set forth in the filings of US Airways and AMR with the SEC, especially in the “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” sections of their respective annual reports on Form 10-K and quarterly reports on Form 10-Q, their current reports on Form 8-K and other SEC filings, including the registration statement, proxy statement and prospectus. Any forward-looking statements speak only as of the date hereof or as of the dates indicated in the statements. Neither AMR nor US Airways assumes any obligation to publicly update or supplement any forward-looking statement to reflect actual results, changes in assumptions or changes in other factors affecting these forward-looking statements except as required by law.