Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 04:40 and arrives at Ashgabat Ashgabat International Airport at 10:10.
The flighttime is about 12h 30m. The distance travelled ("as the bird flies"): 4631 Km. So the average speed is roughly 370 Km.
There is an 7 hour time difference between Bangkok and Ashgabat
