(IATA: TWU, ICAO: WBKW) is an airport in North Borneo, Malaysia. Tawau Airport is Sabah’s second major airport, strategically positioned as a key launch point for world-class diving destinations. It handles over 1. 7 million passengers annually, and a substantial upgrade underway will significantly enhance its capacity and passenger comfort by 2028.(IATA: TWU, ICAO: WBKW) is an airport in North Borneo, Malaysia. Tawau Airport is Sabah’s second major airport, strategically positioned as a key launch point for world-class diving destinations. It handles over 1. 7 million passengers annually, and a substantial upgrade underway will significantly enhance its capacity and passenger comfort by 2028.