Flight Perth Airport departs from Perth Perth Airport at 10:40 and arrives at Sydney Sydney Airport at 16:45.
The flighttime is about 4h 05m. The distance travelled ("as the bird flies"): 3917 Km. So the average speed is roughly 959 Km.
There is an 2 hour time difference between Perth and Sydney
The best month to arrive at Perth is February and the most expensive month to fly is May. (Average prices, based on 1249 datapoints.)
The best day to arrive at Perth is Sunday and it would be best to avoid Saturday, as prices are on average 178.75% higher than on Sunday. (Average prices, based on 12495739 datapoints.)
We have a lot more statistics for flights QF 646 and between Perth and Sydney.