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Alaska Air Group, Inc., through its subsidiaries, operated airlines. The company operates through three segments: Mainline, Regional, and Horizon. The company offers scheduled air transportation services on Boeing and Airbus jet aircraft for passengers and cargo throughout the United States, and in parts of Mexico, Costa Rica, and Belize; and for passengers across a shorter distance network within the United States and Canada. Alaska Air Group, Inc. was founded in 1932 and is based in Seattle, Washington.