Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 14:25 and arrives at Colombo Bandaranaike International Airport at 17:30.
The flighttime is about 4h 35m. The distance travelled ("as the bird flies"): 2958 Km. So the average speed is roughly 645 Km.
There is an 1.5 hour time difference between Jakarta and Colombo
The best day to arrive at Jakarta is Monday and it would be best to avoid Friday, as prices are on average 191.7% higher than on Monday. (Average prices, based on 524866 datapoints.)
We have a lot more statistics for flights CX 365 and between Jakarta and Colombo.