Flight Tan Son Nhat International Airport departs from Ho Chi Minh City Tan Son Nhat International Airport at 16:30 and arrives at Tokyo Haneda Airport at 01:00.
The flighttime is about 6h 30m. The distance travelled ("as the bird flies"): 3910 Km. So the average speed is roughly 602 Km.
There is an 2 hour time difference between Ho Chi Minh City and Tokyo