UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 22, 2016

VIRGIN AMERICA INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (650) 762-7000

N/A

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

On April 22, 2016, Virgin America Inc. (“Virgin America” or the “Company”) issued a press release (the “Press Release”) announcing the decision of the Company’s Board of Directors to postpone the Company’s annual meeting of stockholders scheduled to be held on May 10, 2016 pending the Company’s proposed merger with Alaska Air Group, Inc. (“Alaska Air Group”). A copy of the Press Release is attached hereto as Exhibit 99.1 and is incorporated by reference herein.

Additional Information About the Merger and Where to Find It

This communication may be deemed to be solicitation material in respect of the merger of Virgin America with a wholly-owned subsidiary of Alaska Air Group. Virgin America intends to file relevant materials with the Securities and Exchange Commission (the “SEC”), including a proxy statement in preliminary and definitive form, in connection with the solicitation of proxies for the merger. The definitive proxy statement will contain important information about the proposed merger and related matters. BEFORE MAKING A VOTING DECISION, STOCKHOLDERS OF VIRGIN AMERICA ARE URGED TO READ THE DEFINITIVE PROXY STATEMENT AND OTHER RELEVANT MATERIALS CAREFULLY AND IN THEIR ENTIRETY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT VIRGIN AMERICA AND THE MERGER. Stockholders will be able to obtain copies of the proxy statement and other relevant materials (when they become available) and any other documents filed by Virgin America with the SEC for no charge at the SEC’s website at www.sec.gov. In addition, stockholders will be able to obtain free copies of the proxy statement from Virgin America by contacting Virgin America’s Investor Relations Department by telephone at (650) 762-7000, by mail to Virgin America Inc., Attention: Investor Relations Department, 555 Airport Boulevard, Burlingame, California 94010, or by going to Virgin America’s Investor Relations page on its corporate website at http://ir.virginamerica.com.

Participants in the Solicitation

Alaska Air Group, Virgin America and certain of their respective directors, executive officers and other employees may be deemed to be participants in the solicitation of proxies from Virgin America’s stockholders in respect of the merger. Information concerning the ownership of Virgin America securities by Virgin America’s directors and executive officers is included in their SEC filings on Forms 3, 4 and 5, and additional information about Virgin America’s directors and executive officers is also available in Virgin America’s proxy statement for its 2016 annual meeting of stockholders filed with the SEC on March 25, 2016, and is supplemented by other public filings made, and to be made, with the SEC by Virgin America. Information concerning Alaska Air Group’s directors and executive officers is available in Alaska Air Group’s proxy statement for its 2016 annual meeting of stockholders filed with the SEC on April 1, 2016. Other information regarding persons who may be deemed participants in the proxy solicitation, including their respective interests by security holdings or otherwise, will be set forth in the definitive proxy statement that Virgin America intends to file with the SEC. These documents can be obtained free of charge from the sources indicated above.

Forward-Looking Statements

This communication contains forward-looking statements, within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities and Exchange Act of 1934, as amended, about Alaska Air Group, Virgin America and the proposed merger. Forward-looking statements are statements that are not historical facts. These statements can be identified by the use of forward-looking terminology such as “believe,” “expect,” “may,” “should,” “project,” “could,” “plan,” “goal,” “potential,” “pro forma,” “seek,” “estimate,” “intend” or “anticipate” or the negative thereof or comparable terminology, and include discussions of strategy, financial projections, guidance and estimates (including their underlying assumptions), statements regarding plans, objectives, expectations or consequences of announced transactions and statements about the future performance, operations and services of Virgin America. Virgin America cautions readers not to place undue reliance on these statements. These forward-looking statements are subject to a variety of risks and uncertainties. Consequently, actual results and experience may materially differ from those contained in any forward-looking statements. Such risks and uncertainties include the following: the failure to obtain Virgin America stockholder approval of the proposed merger; the possibility that the closing conditions to the proposed merger may not be satisfied or waived, including that a governmental entity may prohibit, delay or refuse to grant a necessary regulatory approval; delay in closing the merger or the possibility of non-consummation of the merger; the occurrence of any event that could give rise to termination of the merger agreement; the risk that stockholder litigation in connection with the contemplated merger may affect the timing or occurrence of the contemplated merger or result in significant costs of defense, indemnification and liability; risks inherent in the achievement

of anticipated synergies and the timing thereof; risks related to the disruption of the merger to Virgin America and its management; the effect of the announcement of the merger on Virgin America’s ability to retain and hire key personnel and maintain relationships with suppliers and other third parties; labor costs and relations, general economic conditions, increases in operating costs including fuel, inability to meet cost reduction goals, an aircraft accident, and changes in laws and regulations. These risks and others relating to Virgin America are described in greater detail in Virgin America’s SEC filings, including Virgin America’s Annual Report on Form 10-K for the fiscal year ended December 31, 2015, as well as in other documents filed by Virgin America with the SEC after the date thereof. Virgin America makes no commitment to revise or update any forward-looking statements in order to reflect events or circumstances occurring or existing after the date any forward-looking statement is made.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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