Flight Auckland Airport departs from Auckland Auckland Airport at 20:00 and arrives at Melbourne Melbourne Airport at 22:10.
The flighttime is about 4h 10m. The distance travelled ("as the bird flies"): 3332 Km. So the average speed is roughly 800 Km.
There is an 2 hour time difference between Auckland and Melbourne
The best day to arrive at Auckland is Tuesday and it would be best to avoid Friday, as prices are on average 215.73% higher than on Tuesday. (Average prices, based on 4634852 datapoints.)
We have a lot more statistics for flights QF 158 and between Auckland and Melbourne.