Flight Changi Airport departs from Singapore Changi Airport at 11:40 and arrives at Bangkok Suvarnabhumi Airport at 13:05.
The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 462 Km. So the average speed is roughly 191 Km.
There is an 1 hour time difference between Singapore and Bangkok
The best day to arrive at Singapore is Wednesday and it would be best to avoid Sunday, as prices are on average 117.64% higher than on Wednesday. (Average prices, based on 10283083 datapoints.)
We have a lot more statistics for flights VZ 621 and between Singapore and Bangkok.