Naha Airport. For the airport in Naha, North Sulawesi, Indonesia (NAH/WAMH), see Naha Airport (Indonesia). Naha Airport (那覇空港, Naha Kūkō) (IATA: OKA, ICAO: ROAH) is a second class airport located 4 km (2.5 mi) west of the city hall in Naha, Okinawa.