The best month to fly between Perth and Melbourne is March and the most expensive month to fly is September. (Average prices, based on 279 datapoints.)
The best day to arrive at Perth is Friday and it would be best to avoid Thursday, as prices are on average 90.2% higher than on Friday. (Average prices, based on 279 datapoints.)
The cheapest airline flying from Perth to Melbourne is JetStar Airways. They are 39% cheaper than Qantas. (Average prices, based on 296 datapoints.)