Flight International Airport departs from Doha International Airport at 03:05 and arrives at Kathmandu Tribhuvan International Airport at 10:30.
The flighttime is about 4h 25m. The distance travelled ("as the bird flies"): 3758 Km. So the average speed is roughly 851 Km.
There is an 3 hour time difference between Doha and Kathmandu
The best day to arrive at Doha is Friday and it would be best to avoid Saturday, as prices are on average 283.55% higher than on Friday. (Average prices, based on 162629 datapoints.)
We have a lot more statistics for flights QR 652 and between Doha and Kathmandu.