Seaside Municipal Airport (FAA LID: 56S) is a general aviation airport located one mile (1.6 km) Northeast of Seaside in Clatsop County, Oregon, United States. It is owned and operated as a public airport by the city of Seaside. The airport has one asphalt runway, a parallel taxiway, a parking apron with space for up to 20 aircraft, and a five-bay hangar building. Seaside Municipal is the closest airport to Seaside (downtown 3 miles), Gearhart (downtown 1 mile), and Cannon Beach (10 miles).