Flight Hong Kong International Airport departs from Hong Kong Hong Kong International Airport at 22:50 and arrives at Yangon Yangon International Airport at 00:40.
The flighttime is about 3h 20m. The distance travelled ("as the bird flies"): 1980 Km. So the average speed is roughly 594 Km.
There is an 1.5 hour time difference between Hong Kong and Yangon