Flight Sydney Airport departs from Sydney Sydney Airport at 21:20 and arrives at Melbourne Avalon Airport at 22:50.
The flighttime is about 1h 30m. The distance travelled ("as the bird flies"): 839 Km. So the average speed is roughly 559 Km.
The best day to arrive at Sydney is Wednesday and it would be best to avoid Sunday, as prices are on average 169.6% higher than on Wednesday. (Average prices, based on 1001386 datapoints.)
We have a lot more statistics for flights JQ 613 and between Sydney and Melbourne.
