Flight Changi Airport departs from Singapore Changi Airport at 20:35 and arrives at Dhaka Shahjalal International Airport at 22:40.
The flighttime is about 4h 05m. The distance travelled ("as the bird flies"): 1514 Km. So the average speed is roughly 371 Km.
There is an 2 hour time difference between Singapore and Dhaka
The best day to arrive at Singapore is Wednesday and it would be best to avoid Monday, as prices are on average 37.8% higher than on Wednesday. (Average prices, based on 624594 datapoints.)
We have a lot more statistics for flights SQ 446 and between Singapore and Dhaka.