Flight Soekarno–Hatta International Airport departs from Jakarta Soekarno–Hatta International Airport at 12:05 and arrives at Bangkok Suvarnabhumi Airport at 15:40.
The flighttime is about 3h 35m. The distance travelled ("as the bird flies"): 830 Km. So the average speed is roughly 232 Km.
The best day to arrive at Jakarta is Monday and it would be best to avoid Thursday, as prices are on average 318.26% higher than on Monday. (Average prices, based on 48337200 datapoints.)
We have a lot more statistics for flights QZ 254 and between Jakarta and Bangkok.
