Flight Sydney Airport departs from Sydney Sydney Airport at 06:30 and arrives at Melbourne Melbourne Airport at 08:10.
The flighttime is about 1h 40m. The distance travelled ("as the bird flies"): 787 Km. So the average speed is roughly 472 Km.
The best day to arrive at Sydney is Monday and it would be best to avoid Friday, as prices are on average 132.4% higher than on Monday. (Average prices, based on 41543361 datapoints.)
We have a lot more statistics for flights JQ 503 and between Sydney and Melbourne.
