Alaska Air Group, Inc. is engaged in operating airlines. The company operates through its subsidiaries Alaska Airlines, Hawaiian Holdings, Inc., Horizon Air and McGee Air Services. The segments include Mainline, Regional and Horizon. The Mainline segment includes scheduled air transportation on Alaska’s Boeing jets for passengers and cargo throughout the United States and in parts of Mexico, Costa Rica, Belize, the Bahamas and Guatemala. The Regional segment includes Horizon and other third-party airlines’ scheduled passenger services over a shorter-haul network within the United States, Canada and Mexico under Capacity Purchase Agreements (CPA). The Horizon segment includes capacity sold to Alaska under a CPA. It serves more than 140 destinations in North America, Central America, Asia and the Pacific. Guests have more choice than ever when buying, earning or redeeming on alaskaair.com across 30 airlines and 1,000 destinations worldwide.