Flight Sydney Airport departs from Sydney Sydney Airport at 18:35 and arrives at Melbourne Melbourne Airport at 11:00.The flight has a short stop at Canberra.
The flighttime is about 16h 25m. The distance travelled ("as the bird flies"): 787 Km. So the average speed is roughly 48 Km.
The best day to arrive at Sydney is Saturday and it would be best to avoid Tuesday, as prices are on average 165.01% higher than on Saturday. (Average prices, based on 37039006 datapoints.)
We have a lot more statistics for flights QF 1515 and between Sydney and Melbourne.