Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 20:00 and arrives at Singapore Changi Airport at 23:30.
The flighttime is about 2h 30m. The distance travelled ("as the bird flies"): 462 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 Sunday and it would be best to avoid Tuesday, as prices are on average 60.63% higher than on Sunday. (Average prices, based on 11762556 datapoints.)
We have a lot more statistics for flights SQ 713 and between Bangkok and Singapore.