Flight Brisbane Airport departs from Brisbane Brisbane Airport at 09:00 and arrives at Melbourne Melbourne Airport at 12:25.
The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 1343 Km. So the average speed is roughly 556 Km.
There is an 1 hour time difference between Brisbane and Melbourne
The best day to arrive at Brisbane is Sunday and it would be best to avoid Friday, as prices are on average 54.68% higher than on Sunday. (Average prices, based on 1071125 datapoints.)
We have a lot more statistics for flights QF 615 and between Brisbane and Melbourne.