Flight Don Mueang International Airport departs from Bangkok Don Mueang International Airport at 11:20 and arrives at Jakarta Soekarno–Hatta International Airport at 14:55.
The flighttime is about 3h 35m. The distance travelled ("as the bird flies"): 844 Km. So the average speed is roughly 236 Km.
The best day to arrive at Bangkok is Tuesday and it would be best to avoid Sunday, as prices are on average 55.13% higher than on Tuesday. (Average prices, based on 17228421 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 998 datapoints.)
We have a lot more statistics for flights QZ 251 and between Bangkok and Jakarta.