Flight Suvarnabhumi Airport departs from Bangkok Suvarnabhumi Airport at 17:00 and arrives at Chiang Rai Mae Fah Luang Chiang Rai International Airport at 18:20.
The flighttime is about 1h 20m. The distance travelled ("as the bird flies"): 158 Km. So the average speed is roughly 118 Km.
THB
