Flight Sydney Airport departs from Sydney Sydney Airport at 19:15 and arrives at Melbourne Melbourne Airport at 20:50.
The flighttime is about 1h 35m. The distance travelled ("as the bird flies"): 787 Km. So the average speed is roughly 497 Km.
The best day to arrive at Sydney is Thursday and it would be best to avoid Sunday, as prices are on average 84.88% higher than on Thursday. (Average prices, based on 36856775 datapoints.)
We have a lot more statistics for flights QF 489 and between Sydney and Melbourne.
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