High Quality Content by WIKIPEDIA articles! Wellington International Airport (formerly known as Rongotai Airport) (IATA: WLG, ICAO: NZWN) is an international airport located in the suburb of Rongotai in Wellington, the capital city of New Zealand. It is a secondary hub and focus city for Air New Zealand and its subsidiaries. The airport is operated by Wellington International Airport Limited, a joint venture between Infratil and the Wellington City Council.