Flight Changi Airport departs from Singapore Changi Airport at 12:25 and arrives at Bangkok Suvarnabhumi Airport at 13:45.
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 Singapore and Bangkok
The best day to arrive at Singapore is Wednesday and it would be best to avoid Saturday, as prices are on average 30.64% higher than on Wednesday. (Average prices, based on 10283612 datapoints.)
We have a lot more statistics for flights TG 404 and between Singapore and Bangkok.