Flight Pudong International Airport departs from Shanghai Pudong International Airport at 15:25 and arrives at Ho Chi Minh City Tan Son Nhat International Airport at 19:05.
The flighttime is about 4h 40m. The distance travelled ("as the bird flies"): 1901 Km. So the average speed is roughly 407 Km.
There is an 1 hour time difference between Shanghai and Ho Chi Minh City