Flight Yangon International Airport departs from Yangon Yangon International Airport at 07:05 and arrives at Hong Kong Hong Kong International Airport at 11:45.
The flighttime is about 3h 10m. The distance travelled ("as the bird flies"): 1980 Km. So the average speed is roughly 625 Km.
There is an 1.5 hour time difference between Yangon and Hong Kong