Flight Noi Bai International Airport departs from Hanoi Noi Bai International Airport at 20:05 and arrives at Yangon Yangon International Airport at 21:35.
The flighttime is about 2h 00m. The distance travelled ("as the bird flies"): 1078 Km. So the average speed is roughly 539 Km.
There is an 0.5 hour time difference between Hanoi and Yangon