Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 20:15 and arrives at Sydney Sydney Airport at 06:20.
The flighttime is about 7h 05m. The distance travelled ("as the bird flies"): 5208 Km. So the average speed is roughly 735 Km.
There is an 3 hour time difference between Jakarta and Sydney
The best month to arrive at Jakarta is March and the most expensive month to fly is January. (Average prices, based on 1683 datapoints.)
The best day to arrive at Jakarta is Sunday and it would be best to avoid Thursday, as prices are on average 27.85% higher than on Sunday. (Average prices, based on 6453175 datapoints.)
The best time to book is 29 days before the departure date. You will get, on average, the cheapest price for flight QF 42. (Average prices, based on 1252 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 1653 datapoints.)
We have a lot more statistics for flights QF 42 and between Jakarta and Sydney.