Flight Sydney Airport departs from Sydney Sydney Airport at 21:20 and arrives at Melbourne Melbourne Airport at 22:50.
The flighttime is about 1h 30m. The distance travelled ("as the bird flies"): 787 Km. So the average speed is roughly 525 Km.
The best day to arrive at Sydney is Wednesday and it would be best to avoid Sunday, as prices are on average 177.39% higher than on Wednesday. (Average prices, based on 36443620 datapoints.)
We have a lot more statistics for flights JQ 613 and between Sydney and Melbourne.