Flight Changi Airport departs from Singapore Changi Airport at 22:40 and arrives at Bangkok Don Mueang International Airport at 00:15.
The flighttime is about 2h 35m. The distance travelled ("as the bird flies"): 477 Km. So the average speed is roughly 185 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 66.54% higher than on Tuesday. (Average prices, based on 7335439 datapoints.)
We have a lot more statistics for flights SL 105 and between Singapore and Bangkok.