High Quality Content by WIKIPEDIA articles! Southwest Florida International Airport (IATA: RSW, ICAO: KRSW, FAA LID: RSW) is a public county-owned airport located in the South Fort Myers region of unincorporated Lee County, Florida, United States. The airport`s service market is Southwest Florida, particularly Cape Coral, Fort Myers, Sanibel Island, Marco Island, Captiva Island, Bonita Springs and Naples.