Alaska Air Group, Inc. is a holding company of Alaska Airlines (Alaska) and Horizon Air (Horizon). The Company's segments include Alaska Mainline, Alaska Regional and Horizon. Its Alaska Mainline segment operates the Boeing 737 part of Alaska's business. It offers north/south service within the western United States, Canada, Mexico and Costa Rica, as well as passenger and dedicated cargo services to and within the state of Alaska. Its regional operations consist of flights operated by Horizon, SkyWest Airlines, Inc. and Peninsula Airways, Inc. Its Horizon segment operates regional aircraft. It boasts over 1,200 daily flights to approximately 120 destinations. It offers over 290 daily flights to approximately 50 destinations from California, including over 110 daily nonstop flights to approximately 30 destinations from over three Bay Area airports and approximately 105 daily nonstop flights to over 40 destinations from approximately four Los Angeles area airports.