NPE and SYD 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. NPE to SYD refers to a flight route from Napier Hawkes Bay Airport to Sydney Kingsford Smith Airport. Melbourne Airport (MEL), Brisbane Airport (BNE), Perth Airport (PER), Adelaide Airport (ADL), Coolangatta Gold Coast Airport (OOL) are other airports near this flight route and their unique identifiers/IATA codes.