Flight Sydney Airport departs from Sydney Sydney Airport at 11:40 and arrives at Jakarta Soekarno–Hatta International Airport at 15:30.
The flighttime is about 7h 50m. The distance travelled ("as the bird flies"): 5208 Km. So the average speed is roughly 665 Km.
There is an 4 hour time difference between Sydney and Jakarta
The best day to arrive at Sydney is Saturday and it would be best to avoid Tuesday, as prices are on average 52.84% higher than on Saturday. (Average prices, based on 2098824 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 125 datapoints.)
We have a lot more statistics for flights GA 713 and between Sydney and Jakarta.