Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 19:55 and arrives at Singapore Changi Airport at 22:55.
The flighttime is about 2h 00m. The distance travelled ("as the bird flies"): 369 Km. So the average speed is roughly 184 Km.
There is an 1 hour time difference between Jakarta and Singapore
The best month to arrive at Jakarta is November and the most expensive month to fly is June. (Average prices, based on 11783 datapoints.)
We have a lot more statistics for flights TR 279 and between Jakarta and Singapore.