High Quality Content by WIKIPEDIA articles! Warbirds over Wanaka is a biennial air show in Wanaka, held on the Easter weekend of even-numbered years. It is held at Wanaka Airport, 10 km outside Wanaka village. Initially conceived by New Zealand live deer recovery pioneer, Sir Tim Wallis, as a display day for him to play with his collection of World War II aircraft, the show has grown into a major institution. Roads are closed and traffic is detoured around the area during the weekend. Hotels, motels and backpackers around Wanaka are usually booked well in advance (two years ahead). Accommodation is impossible to find if one does not have a booking.