Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors and Shareholders

Alaska Air Group, Inc.:

We consent to the use of our reports dated February 19, 2008, with respect to the consolidated balance sheets of Alaska Air Group, Inc. and subsidiaries as of December 31, 2007 and 2006, and the related consolidated statements of operations, shareholders’ equity, and cash flows for each of the years in the three-year period ended December 31, 2007, and the related financial statement Schedule II, and the effectiveness of internal control over financial reporting as of December 31, 2007, incorporated herein by reference and to the reference to our firm under the heading “Experts” in the prospectus.

Our report dated February 19, 2008 on the consolidated financial statements referred to above refers to the Company’s adoption of Statement of Financial Accounting Standards (SFAS) No. 123(R), Share-Based Payment , SEC Staff Accounting Bulletin No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements, and SFAS No. 158, Employers’ Accounting for Defined Benefit Pension and Other Postretirement Plans – an amendment of FASB Statements No. 87, 88, 106 and 132(R) , effective January 1, 2006.

/s/ KPMG LLP

Seattle, Washington

August 7, 2008