Flight Changi Airport departs from Singapore Changi Airport at 20:40 and arrives at Melbourne Melbourne Airport at 06:00.
The flighttime is about 7h 20m. The distance travelled ("as the bird flies"): 4956 Km. So the average speed is roughly 676 Km.
There is an 2 hour time difference between Singapore and Melbourne
The best day to arrive at Singapore is Saturday and it would be best to avoid Monday, as prices are on average 394.07% higher than on Saturday. (Average prices, based on 370678 datapoints.)
We have a lot more statistics for flights SQ 247 and between Singapore and Melbourne.