Flight International Airport departs from Doha International Airport at 07:30 and arrives at London Heathrow Airport at 13:00.
The flighttime is about 7h 30m. The distance travelled ("as the bird flies"): 6286 Km. So the average speed is roughly 838 Km.
There is an 2 hour time difference between Doha and London
The best day to arrive at Doha is Saturday and it would be best to avoid Wednesday, as prices are on average 865.54% higher than on Saturday. (Average prices, based on 96176 datapoints.)
We have a lot more statistics for flights BA 122 and between Doha and London.