Brookings Regional Airport (IATA: BKX, ICAO: KBKX, FAA LID: BKX), formerly Brookings Municipal Airport, is in Brookings, in Brookings County, South Dakota. The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a general aviation airport. The airport has had no airline service since September 2009 when the United States Department of Transportation ended the subsidy for its Essential Air Service.