Flight Ninoy Aquino International Airport departs from Manila Ninoy Aquino International Airport at 05:20 and arrives at Hanoi Noi Bai International Airport at 07:35.
The flighttime is about 3h 15m. The distance travelled ("as the bird flies"): 1715 Km. So the average speed is roughly 528 Km.
There is an 1 hour time difference between Manila and Hanoi
