Flight International Airport departs from Doha International Airport at 01:45 and arrives at Istanbul Istanbul Atatürk Airport at 06:25.
The flighttime is about 4h 40m. The distance travelled ("as the bird flies"): 2846 Km. So the average speed is roughly 610 Km.
The best day to arrive at Doha is Saturday and it would be best to avoid Thursday, as prices are on average 36.04% higher than on Saturday. (Average prices, based on 446093 datapoints.)
We have a lot more statistics for flights TK 781 and between Doha and Istanbul.
