Flight Avalon Airport departs from Melbourne Avalon Airport at 06:00 and arrives at Sydney Sydney Airport at 07:25.
The flighttime is about 1h 25m. The distance travelled ("as the bird flies"): 839 Km. So the average speed is roughly 592 Km.
The best day to arrive at Melbourne is Saturday and it would be best to avoid Monday, as prices are on average 576.7% higher than on Saturday. (Average prices, based on 1005885 datapoints.)
We have a lot more statistics for flights QF 5602 and between Melbourne and Sydney.