Flight Don Mueang International Airport departs from Bangkok Don Mueang International Airport at 18:20 and arrives at Singapore Changi Airport at 21:40.
The flighttime is about 2h 20m. The distance travelled ("as the bird flies"): 477 Km. So the average speed is roughly 204 Km.
There is an 1 hour time difference between Bangkok and Singapore
The best day to arrive at Bangkok is Thursday and it would be best to avoid Monday, as prices are on average 107.66% higher than on Thursday. (Average prices, based on 3595292 datapoints.)
We have a lot more statistics for flights SL 104 and between Bangkok and Singapore.