Alaska Air Group is the holding company for Alaska Airlines and Horizon Air Industries, Seattle-based carriers that collectively serve more than 70 destinations in the western United States, Canada and Mexico. Alaska Air Group was organized as a Delaware corporation in 1985. Alaska Airlines, founded in 1932, accounts for more than 75 percent of Alaska Air Group s revenues, providing scheduled air service to over 35 cities in Alaska, Washington, Oregon, California, Nevada, Arizona and British Columbia. Its major hubs are Seattle, Los Angeles, Anchorage, Alaska, and Portland, Ore. Horizon Air, a Washington corporation organized in 1981, provides air transportation to more than 40 destinations in Washington, Oregon, Idaho, Montana, California, Arizona, Colorado, British Columbia and Alberta. Its major hubs are Seattle, Portland, Ore., and Boise, Idaho. Alaska Air Group is located in Seattle.