Long Island MacArthur Airport (IATA: ISP, ICAO: KISP, FAA LID: ISP) (colloquially referred to as MacArthur Airport, MacArthur, or by its original name, Islip Airport) is a public airport in Ronkonkoma in the Town of Islip, on Long Island, in New York, United States. The Town of Islip owns and operates the airport, which serves about two million airline passengers a year, as well as general aviation. Long Island MacArthur Airport (LIMA) covers 1,311 acres (531 ha) and has three runways and two he... Long Island MacArthur Airport (IATA: ISP, ICAO: KISP, FAA LID: ISP) (colloquially referred to as MacArthur Airport, MacArthur, or by its original name, Islip Airport) is a public airport in Ronkonkoma in the Town of Islip, on Long Island, in New York, United States. The Town of Islip owns and operates the airport, which serves about two million airline passengers a year, as well as general aviation. Long Island MacArthur Airport (LIMA) covers 1,311 acres (531 ha) and has three runways and two helipads.