Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 08:55 and arrives at Singapore Changi Airport at 12:10.
The flighttime is about 2h 15m. The distance travelled ("as the bird flies"): 462 Km. So the average speed is roughly 205 Km.
There is an 1 hour time difference between Bangkok and Singapore
The best day to arrive at Bangkok is Wednesday and it would be best to avoid Monday, as prices are on average 89.3% higher than on Wednesday. (Average prices, based on 9299908 datapoints.)
We have a lot more statistics for flights TR 609 and between Bangkok and Singapore.