Flight Changi Airport departs from Singapore Changi Airport at 04:45 and arrives at Dhaka Shahjalal International Airport at 07:00.
The flighttime is about 4h 15m. The distance travelled ("as the bird flies"): 1514 Km. So the average speed is roughly 356 Km.
There is an 2 hour time difference between Singapore and Dhaka
The best day to arrive at Singapore is Monday and it would be best to avoid Saturday, as prices are on average 61.42% higher than on Monday. (Average prices, based on 623931 datapoints.)
We have a lot more statistics for flights BG 75 and between Singapore and Dhaka.