Flight International Airport departs from Doha International Airport at 18:30 and arrives at Colombo Bandaranaike International Airport at 02:05.
The flighttime is about 5h 05m. The distance travelled ("as the bird flies"): 3220 Km. So the average speed is roughly 633 Km.
There is an 2.5 hour time difference between Doha and Colombo
The best day to arrive at Doha is Saturday and it would be best to avoid Friday, as prices are on average 165.93% higher than on Saturday. (Average prices, based on 81382 datapoints.)
We have a lot more statistics for flights QR 662 and between Doha and Colombo.