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