Horizon Air is a regional airline based in the United States, primarily operating in the Pacific Northwest. It is a subsidiary of Alaska Airlines and serves various destinations in the western U.S. and Canada. The airline is known for its fleet of Bombardier Q400 turboprop aircraft, which are designed for short-haul flights. Founded in 1981, Horizon Air has built a reputation for providing reliable service and connecting smaller communities to larger hubs. The airline is a member of the Oneworld alliance, allowing passengers to earn and redeem frequent flyer miles across multiple airlines.