Flight Changi Airport departs from Singapore Changi Airport at 19:55 and arrives at Bangkok Suvarnabhumi Airport at 21:30.
The flighttime is about 2h 35m. The distance travelled ("as the bird flies"): 462 Km. So the average speed is roughly 179 Km.
There is an 1 hour time difference between Singapore and Bangkok
The best day to arrive at Singapore is Tuesday and it would be best to avoid Friday, as prices are on average 321.6% higher than on Tuesday. (Average prices, based on 19650125 datapoints.)
We have a lot more statistics for flights TR 620 and between Singapore and Bangkok.
