The best month to fly between Perth and Sydney 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 Wednesday and it would be best to avoid Thursday, as prices are on average 9.01% higher than on Wednesday. (Average prices, based on 12472409 datapoints.)
The best time to fly is at around 5. (Average prices, based on 1408 datapoints.)