Flight Sydney Airport departs from Sydney Sydney Airport at 14:00 and arrives at Brisbane Brisbane Airport at 14:30.
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 Wednesday and it would be best to avoid Saturday, as prices are on average 87.79% higher than on Wednesday. (Average prices, based on 2623949 datapoints.)
We have a lot more statistics for flights VA 947 and between Sydney and Brisbane.