R Notes REK is common IATA code for Keflavík International Airport and Reykjavík Airport . RIO is common IATA code for Rio de Janeiro–Galeão International Airport , Santos Dumont Airport , Jacarepaguá Airport and Santa Cruz Air Force Base . ROM is common IATA code for Leonardo da Vinci–Fiumicino Airport and Ciampino–G. B. Pastine International Airport . References General references - includes IATA codes Aviation Safety Network - IATA and ICAO airport codes Great Circle Mapper - IATA, ICAO and FAA airport codes Specific citations R