Flight Brisbane Airport departs from Brisbane Brisbane Airport at 07:15 and arrives at Melbourne Melbourne Airport at 09:40.
The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 1343 Km. So the average speed is roughly 556 Km.
The best day to arrive at Brisbane is Wednesday and it would be best to avoid Monday, as prices are on average 98.88% higher than on Wednesday. (Average prices, based on 1157592 datapoints.)
We have a lot more statistics for flights QF 609 and between Brisbane and Melbourne.
THB
