Flight Changi Airport departs from Singapore Changi Airport at 11:30 and arrives at Jakarta Soekarno–Hatta International Airport at 12:20.
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 Singapore and Jakarta
The best day to arrive at Singapore is Wednesday and it would be best to avoid Saturday, as prices are on average 77.8% higher than on Wednesday. (Average prices, based on 408107789 datapoints.)
We have a lot more statistics for flights OD 9111 and between Singapore and Jakarta.
