Adirondack Regional Airport (IATA: SLK, ICAO: KSLK, FAA LID: SLK) is a public use airport located four nautical miles (5 mi, 7 km) northwest of the central business district of Saranac Lake, in Franklin County, New York, United States. The airport is owned by the Town of Harrietstown and is situated in the north-central Adirondacks two miles (3 km) from Lake Clear.