Invercargill Airport (IATA: IVC) is a controlled aerodrome located 1 NM northwest of Invercargill at the south of the South Island of New Zealand. Formed on reclaimed land from the Waihopai River Estuary in 1938, the airport was prone to flooding, the worst being in 1984, leaving it unused for two months. At this time the city council proposed moving the airport back to Myross Bush, the original site up to 1938. Instead a large flood protection scheme was built, but during its construction the airport was flooded again in 1987, thanks to a combination of heavy rain and an unusually high tidal surge. Once completed, the airport has had no problems since.
Here are some of the major Airlines that service Invercargill Airport:
Air New Zealand operated by Air Nelson
Air New Zealand operated by Mount Cook Airline
Stewart Island Flights
The above mentioned information is taken from: http://en.wikipedia.org/wiki/Invercargill_Airport