Flight Wellington International Airport departs from Wellington Wellington International Airport at 10:05 and arrives at Christchurch Christchurch International Airport at 11:00.
The flighttime is about 0h 55m. The distance travelled ("as the bird flies"): 348 Km. So the average speed is roughly 380 Km.
The best month to arrive at Wellington is February and the most expensive month to fly is May. (Average prices, based on 276 datapoints.)
We have a lot more statistics for flights NZ 345 and between Wellington and Christchurch.