Flight Kuala Lumpur International Airport departs from Kuala Lumpur Kuala Lumpur International Airport at 09:40 and arrives at Hanoi Noi Bai International Airport at 12:10.
The flighttime is about 3h 30m. The distance travelled ("as the bird flies"): 663 Km. So the average speed is roughly 189 Km.
There is an 1 hour time difference between Kuala Lumpur and Hanoi