Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 01:00 and arrives at Nairobi Jomo Kenyatta International Airport at 06:15.
The flighttime is about 9h 15m. The distance travelled ("as the bird flies"): 7061 Km. So the average speed is roughly 763 Km.
There is an 4 hour time difference between Bangkok and Nairobi