Flight Brisbane Airport departs from Brisbane Brisbane Airport at 12:20 and arrives at Sydney Sydney Airport at 14:45.
The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 680 Km. So the average speed is roughly 281 Km.
The best month to arrive at Brisbane is May and the most expensive month to fly is July. (Average prices, based on 6229 datapoints.)
The best day to arrive at Brisbane is Sunday and it would be best to avoid Wednesday, as prices are on average 182.65% higher than on Sunday. (Average prices, based on 5639374 datapoints.)
We have a lot more statistics for flights QF 531 and between Brisbane and Sydney.