Flight Shahjalal International Airport departs from Dhaka Shahjalal International Airport at 10:35 and arrives at Doha International Airport at 13:15.
The flighttime is about 5h 40m. The distance travelled ("as the bird flies"): 4318 Km. So the average speed is roughly 762 Km.
There is an 3 hour time difference between Dhaka and Doha