Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 12:00 and arrives at Kupang El Tari International Airport at 15:55.
The flighttime is about 2h 55m. The distance travelled ("as the bird flies"): 1900 Km. So the average speed is roughly 651 Km.
There is an 1 hour time difference between Jakarta and Kupang
The best month to arrive at Jakarta is February and the most expensive month to fly is July. (Average prices, based on 2813 datapoints.)
We have a lot more statistics for flights GA 456 and between Jakarta and Kupang.