The best month to fly between Sydney and Perth is May and the most expensive month to fly is September. (Average prices, based on 232 datapoints.)
The best day to arrive at Sydney is Sunday and it would be best to avoid Wednesday, as prices are on average 160.15% higher than on Sunday. (Average prices, based on 7932855 datapoints.)
The cheapest airline flying from Sydney to Perth is JetStar Airways. They are 34% cheaper than Qantas. (Average prices, based on 241 datapoints.)
The best time to fly is at around 11. (Average prices, based on 346 datapoints.)