Flight Tan Son Nhat International Airport departs from Ho Chi Minh City Tan Son Nhat International Airport at 00:50 and arrives at Manila Ninoy Aquino International Airport at 04:20.
The flighttime is about 2h 30m. The distance travelled ("as the bird flies"): 1605 Km. So the average speed is roughly 642 Km.
There is an 1 hour time difference between Ho Chi Minh City and Manila