Knoxville Downtown Island Airport or Knoxville Downtown Island Home Airport (ICAO: KDKX, FAA LID: DKX), often referred to as Island Home Airport, is a general aviation airport located approximately one-half mile east of downtown Knoxville, in Knox County, Tennessee, United States. This airport is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a reliever airport. Although most U.S. airports use the same three-letter location identifier for the FAA and IATA, this airport is assigned DKX by the FAA, but has no designation from the IATA.