Alaska Airlines is a major airline in the United States headquartered in SeaTac, Washington, within the Seattle metropolitan area. It is the fifth-largest airline in North America when measured by scheduled passengers carried, as of 2024. Alaska, together with its regional partners Horizon Air and SkyWest Airlines, operates a route network primarily focused on connecting cities along the West Coast of the United States to over 100 destinations in the contiguous United States, North America, Asia, Oceania, and Europe.