Flight Don Mueang International Airport departs from Bangkok Don Mueang International Airport at 23:15 and arrives at Singapore Changi Airport at 02:50.
The flighttime is about 2h 35m. The distance travelled ("as the bird flies"): 477 Km. So the average speed is roughly 185 Km.
There is an 1 hour time difference between Bangkok and Singapore
The best day to arrive at Bangkok is Monday and it would be best to avoid Sunday, as prices are on average 91.96% higher than on Monday. (Average prices, based on 3732943 datapoints.)
This graph shows the distribution of prices found in the past years for this flight. (Average prices, based on 131 datapoints.)
We have a lot more statistics for flights TR 867 and between Bangkok and Singapore.