Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 01:55 and arrives at Melbourne Melbourne Airport at 11:15.
The flighttime is about 6h 20m. The distance travelled ("as the bird flies"): 4590 Km. So the average speed is roughly 725 Km.
There is an 3 hour time difference between Jakarta and Melbourne
The best day to arrive at Jakarta is Sunday and it would be best to avoid Saturday, as prices are on average 61.79% higher than on Sunday. (Average prices, based on 1702705 datapoints.)
We have a lot more statistics for flights GA 716 and between Jakarta and Melbourne.