Flight Melbourne Airport departs from Melbourne Melbourne Airport at 20:55 and arrives at Brisbane Brisbane Airport at 23:00.
The flighttime is about 2h 05m. The distance travelled ("as the bird flies"): 1343 Km. So the average speed is roughly 645 Km.
The best day to arrive at Melbourne is Monday and it would be best to avoid Thursday, as prices are on average 112.35% higher than on Monday. (Average prices, based on 4304325 datapoints.)
We have a lot more statistics for flights JQ 578 and between Melbourne and Brisbane.