Flight Pudong International Airport departs from Shanghai Pudong International Airport at 00:10 and arrives at Ho Chi Minh City Tan Son Nhat International Airport at 03:20.
The flighttime is about 4h 10m. The distance travelled ("as the bird flies"): 1901 Km. So the average speed is roughly 456 Km.
There is an 1 hour time difference between Shanghai and Ho Chi Minh City
