Flight Christchurch International Airport departs from Christchurch Christchurch International Airport at 20:40 and arrives at Auckland Auckland Airport at 22:05.
The flighttime is about 1h 25m. The distance travelled ("as the bird flies"): 759 Km. So the average speed is roughly 536 Km.
The best month to arrive at Christchurch is June and the most expensive month to fly is March. (Average prices, based on 550 datapoints.)
We have a lot more statistics for flights NZ 578 and between Christchurch and Auckland.