Flight Shahjalal International Airport departs from Dhaka Shahjalal International Airport at 13:20 and arrives at Singapore Changi Airport at 19:30.
The flighttime is about 4h 10m. The distance travelled ("as the bird flies"): 1514 Km. So the average speed is roughly 363 Km.
There is an 2 hour time difference between Dhaka and Singapore
The best day to arrive at Dhaka is Tuesday and it would be best to avoid Monday, as prices are on average 140.2% higher than on Tuesday. (Average prices, based on 63870 datapoints.)
We have a lot more statistics for flights SQ 449 and between Dhaka and Singapore.