Wellington Airport WLG  officially known as  Wellington International Airport New Zealand  is the  third busiest airport in New Zealand  and is located in the suburb of Rongotai in Wellington, New Zealand. The old name of the airport was Rongotai Airport. The is located in the suburb of Rongotai in Wellington, New Zealand. Till 1998, two-thirds of  Wellington Airport  was owned by a private company named Infratil, and the remaining third was owned by the Wellington City Council.