Flight Changi Airport departs from Singapore Changi Airport at 12:35 and arrives at Jakarta Soekarno–Hatta International Airport at 13:30.
The flighttime is about 1h 55m. The distance travelled ("as the bird flies"): 369 Km. So the average speed is roughly 193 Km.
There is an 1 hour time difference between Singapore and Jakarta
The best day to arrive at Singapore is Monday and it would be best to avoid Sunday, as prices are on average 268.17% higher than on Monday. (Average prices, based on 418201915 datapoints.)
We have a lot more statistics for flights SQ 8604 and between Singapore and Jakarta.
