Alaska Airlines () is an airline based in the Seattle suburb of SeaTac, Washington, in the United States. The airline originated in 1932 as McGee Airways. After many mergers with and acquisitions of other airlines, including Star Air Service, it renamed itself Alaska Airlines in 1944. It now has service throughout the contiguous United States, Canada, Mexico, and four Hawaiian Islands. Alaska Airlines carries more passengers between Alaska and the contiguous United States than any other airline. Classified as a major carrier, it is the seventh-largest US airline in passenger traffic. Alaska currently operates its largest hub at Seattle–Tacoma International Airport. Alaska Airlines' sister carrier, Horizon Air, is closely integrated into Alaska's operations, with Alaska and Horizon sharing many routes. Both airlines are owned by Alaska Air Group. In 2013, J. D.