Flight Changi Airport departs from Singapore Changi Airport at 18:00 and arrives at Dhaka Shahjalal International Airport at 20:00.
The flighttime is about 4h 00m. The distance travelled ("as the bird flies"): 1514 Km. So the average speed is roughly 378 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 87.96% higher than on Monday. (Average prices, based on 624595 datapoints.)
We have a lot more statistics for flights BG 375 and between Singapore and Dhaka.