ROT and MEL 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. ROT to MEL refers to a flight route from Rotorua Airport to Melbourne Airport. Melbourne Avalon Airport (AVV), Melbourne Essendon Airport (MEB), Bendigo Airport (BXG), Melbourne Moorabbin Airport (MBW) are other airports near this flight route and their unique identifiers/IATA codes.