The Seattle-Tacoma International Airport, also known as SeaTac Airport or SeaTac, is an American airport located in SeaTac, Washington, at the intersections of State Routes 99 and 509 and 518, west of Interstate 5. It serves Seattle and Tacoma, Washington, as well as the rest of western Washington. The airport is the primary hub for Alaska Airlines, whose headquarters is located near the airport, and its regional subsidiary Horizon Air. The airport has service to destinations throughout North America, Europe, the Middle East and East Asia. In 2011, the airport served over 32.8 million passengers, making it the 17th-busiest airport in the United States.
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