Flight Imam Khomeini International Airport departs from Tehran Imam Khomeini International Airport at 02:35 and arrives at Istanbul Istanbul Atatürk Airport at 05:45.
The flighttime is about 4h 40m. The distance travelled ("as the bird flies"): 2527 Km. So the average speed is roughly 542 Km.
There is an 1.5 hour time difference between Tehran and Istanbul
