Flight Sydney Airport departs from Sydney Sydney Airport at 11:50 and arrives at Auckland Auckland Airport at 16:50.
The flighttime is about 3h 00m. The distance travelled ("as the bird flies"): 2646 Km. So the average speed is roughly 882 Km.
There is an 2 hour time difference between Sydney and Auckland
The best day to arrive at Sydney is Saturday and it would be best to avoid Sunday, as prices are on average 44.84% higher than on Saturday. (Average prices, based on 6460917 datapoints.)
We have a lot more statistics for flights NZ 104 and between Sydney and Auckland.