Flight Istanbul Atatürk Airport departs from Istanbul Istanbul Atatürk Airport at 20:25 and arrives at Islamabad Benazir Bhutto International Airport at 03:50.
The flighttime is about 5h 25m. The distance travelled ("as the bird flies"): 4943 Km. So the average speed is roughly 913 Km.
There is an 2 hour time difference between Istanbul and Islamabad