Flight Changi Airport departs from Singapore Changi Airport at 12:25 and arrives at Jakarta Soekarno–Hatta International Airport at 13:25.
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 Singapore and Jakarta
The best day to arrive at Singapore is Tuesday and it would be best to avoid Friday, as prices are on average 175.7% higher than on Tuesday. (Average prices, based on 407705360 datapoints.)
We have a lot more statistics for flights 6E 3646 and between Singapore and Jakarta.
