Flight Sydney Airport departs from Sydney Sydney Airport at 21:30 and arrives at Brisbane Brisbane Airport at 22:00.
The flighttime is about 0h 30m. The distance travelled ("as the bird flies"): 680 Km. So the average speed is roughly 1360 Km.
The best day to arrive at Sydney is Monday and it would be best to avoid Sunday, as prices are on average 148.68% higher than on Monday. (Average prices, based on 2635398 datapoints.)
We have a lot more statistics for flights VA 999 and between Sydney and Brisbane.