Flight Melbourne Airport departs from Melbourne Melbourne Airport at 16:00 and arrives at Sydney Sydney Airport at 17:25.
The flighttime is about 1h 25m. The distance travelled ("as the bird flies"): 787 Km. So the average speed is roughly 556 Km.
The best day to arrive at Melbourne is Saturday and it would be best to avoid Friday, as prices are on average 125.85% higher than on Saturday. (Average prices, based on 29525274 datapoints.)
We have a lot more statistics for flights QF 462 and between Melbourne and Sydney.