Flight Melbourne Airport departs from Melbourne Melbourne Airport at 21:00 and arrives at Sydney Sydney Airport at 22:25.
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 Tuesday and it would be best to avoid Sunday, as prices are on average 50.45% higher than on Tuesday. (Average prices, based on 29546255 datapoints.)
We have a lot more statistics for flights QF 498 and between Melbourne and Sydney.