PEN and NAS are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. PEN to NAS refers to a flight route from Penang Intl Airport to Nassau Intl Airport. Freeport Grand Bahama Intl Airport (FPO), Georgetown Exuma Intl Airport (GGT), Gregory Town North Eleuthera Airport (ELH), Marsh Harbour Airport (MHH), Port Royal Bimini Airport (BIM) are other airports near this flight route and their unique identifiers/IATA codes. Find deals