Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 03:40 and arrives at Kupang El Tari International Airport at 08:55.The flight has a short stop at Surabaya.
The flighttime is about 4h 15m. The distance travelled ("as the bird flies"): 1900 Km. So the average speed is roughly 447 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 JT 690 and between Jakarta and Kupang.