Roche Harbor Airport is a private airport located one nautical mile (2 km) northeast of the central business district of Roche Harbor, in San Juan County, Washington, United States. It was formerly a public use airport (FAA ID: 9S1).FacilitiesRoche Harbor Airport resides at elevation of 100 feet (30 m) above mean sea level. It has one runway designated 7/25 with an asphalt surface measuring 3,593 by 30 feet (1,095 x 9 m).