Flight Sydney Airport departs from Sydney Sydney Airport at 18:55 and arrives at Christchurch Christchurch International Airport at 23:55.
The flighttime is about 3h 00m. The distance travelled ("as the bird flies"): 2577 Km. So the average speed is roughly 859 Km.
There is an 2 hour time difference between Sydney and Christchurch
The best day to arrive at Sydney is Monday and it would be best to avoid Friday, as prices are on average 55.35% higher than on Monday. (Average prices, based on 171292 datapoints.)
We have a lot more statistics for flights GA 139 and between Sydney and Christchurch.