Flight Perth Airport departs from Perth Perth Airport at 22:55 and arrives at Sydney Sydney Airport at 06:10.
The flighttime is about 5h 15m. The distance travelled ("as the bird flies"): 3917 Km. So the average speed is roughly 746 Km.
There is an 2 hour time difference between Perth and Sydney
The best day to arrive at Perth is Wednesday and it would be best to avoid Thursday, as prices are on average 20.87% higher than on Wednesday. (Average prices, based on 12061155 datapoints.)
We have a lot more statistics for flights GA 570 and between Perth and Sydney.