Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 17:00 and arrives at Singapore Changi Airport at 19:50.
The flighttime is about 1h 50m. The distance travelled ("as the bird flies"): 369 Km. So the average speed is roughly 201 Km.
There is an 1 hour time difference between Jakarta and Singapore
The best day to arrive at Jakarta is Sunday and it would be best to avoid Friday, as prices are on average 91.47% higher than on Sunday. (Average prices, based on 580393298 datapoints.)
We have a lot more statistics for flights SQ 961 and between Jakarta and Singapore.