Flight Perth Airport departs from Perth Perth Airport at 22:40 and arrives at Melbourne Melbourne Airport at 05:15.
The flighttime is about 3h 35m. The distance travelled ("as the bird flies"): 3233 Km. So the average speed is roughly 902 Km.
There is an 3 hour time difference between Perth and Melbourne
The best day to arrive at Perth is Sunday and it would be best to avoid Tuesday, as prices are on average 210.25% higher than on Sunday. (Average prices, based on 947615 datapoints.)
We have a lot more statistics for flights QF 764 and between Perth and Melbourne.