$645 Cheap flights to South Island

There are a total of 6 airlines that operate flight routes to South Island, with Air New Zealand being the most popular option. An estimated 71% of those flying into South Island choose to fly with Air New Zealand. If you’re unable to find tickets with Air New Zealand, then Qantas Airways and United Airlines are also popular airlines to fly with.

Consider booking a flight to South Island on a Monday, which is the cheapest day of the week. You will also find that flying out on a Sunday is another low-cost option. Try to avoid booking your flight to South Island on Friday, which tends to be the most expensive day of the week.

Prices for flights to South Island were last updated today.

As of December 2025, there are 12 operators available to choose from for flights to South Island.

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to South Island.

The necessary travel and health documents for your South Island trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.