Flight Don Mueang International Airport departs from Bangkok Don Mueang International Airport at 20:40 and arrives at Jakarta Soekarno–Hatta International Airport at 00:05.
The flighttime is about 3h 25m. The distance travelled ("as the bird flies"): 844 Km. So the average speed is roughly 247 Km.
The best day to arrive at Bangkok is Thursday and it would be best to avoid Sunday, as prices are on average 72.09% higher than on Thursday. (Average prices, based on 17227394 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 1126 datapoints.)
We have a lot more statistics for flights QZ 253 and between Bangkok and Jakarta.