Flight Istanbul Atatürk Airport departs from Istanbul Istanbul Atatürk Airport at 20:30 and arrives at Bangkok Don Mueang International Airport at 10:20.
The flighttime is about 9h 50m. The distance travelled ("as the bird flies"): 7864 Km. So the average speed is roughly 800 Km.
There is an 4 hour time difference between Istanbul and Bangkok