Flight Yangon International Airport departs from Yangon Yangon International Airport at 14:35 and arrives at Bangkok Don Mueang International Airport at 16:25.
The flighttime is about 1h 20m. The distance travelled ("as the bird flies"): 499 Km. So the average speed is roughly 374 Km.
There is an 0.5 hour time difference between Yangon and Bangkok