Flight Yangon International Airport departs from Yangon Yangon International Airport at 12:20 and arrives at Tokyo Narita International Airport at 20:55.
The flighttime is about 6h 05m. The distance travelled ("as the bird flies"): 4960 Km. So the average speed is roughly 815 Km.
There is an 2.5 hour time difference between Yangon and Tokyo