Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 14:15 and arrives at Jakarta Soekarno–Hatta International Airport at 17:50.
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 Bangkok is Wednesday and it would be best to avoid Sunday, as prices are on average 26.35% higher than on Wednesday. (Average prices, based on 17937136 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 762 datapoints.)
We have a lot more statistics for flights GA 867 and between Bangkok and Jakarta.
