Flight Istanbul Atatürk Airport departs from Istanbul Istanbul Atatürk Airport at 12:05 and arrives at Reykjavik Keflavík International Airport at 15:00.
The flighttime is about 5h 55m. The distance travelled ("as the bird flies"): 6226 Km. So the average speed is roughly 1052 Km.
There is an 3 hour time difference between Istanbul and Reykjavik