Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 20:10 and arrives at Singapore Changi Airport at 23:30.
The flighttime is about 2h 20m. The distance travelled ("as the bird flies"): 462 Km. So the average speed is roughly 198 Km.
There is an 1 hour time difference between Bangkok and Singapore
The best day to arrive at Bangkok is Tuesday and it would be best to avoid Monday, as prices are on average 114.77% higher than on Tuesday. (Average prices, based on 9259803 datapoints.)
We have a lot more statistics for flights SQ 983 and between Bangkok and Singapore.