Flight Sydney Airport departs from Sydney Sydney Airport at 13:55 and arrives at Jakarta Soekarno–Hatta International Airport at 19:00.
The flighttime is about 8h 05m. The distance travelled ("as the bird flies"): 5208 Km. So the average speed is roughly 644 Km.
There is an 3 hour time difference between Sydney and Jakarta
The best day to arrive at Sydney is Wednesday and it would be best to avoid Friday, as prices are on average 25.91% higher than on Wednesday. (Average prices, based on 1842657 datapoints.)
We have a lot more statistics for flights QF 41 and between Sydney and Jakarta.