Flight Shahjalal International Airport departs from Dhaka Shahjalal International Airport at 13:35 and arrives at Bangkok Suvarnabhumi Airport at 17:00.
The flighttime is about 2h 25m. The distance travelled ("as the bird flies"): 1152 Km. So the average speed is roughly 477 Km.
There is an 1 hour time difference between Dhaka and Bangkok