Flight Pudong International Airport departs from Shanghai Pudong International Airport at 21:50 and arrives at Hanoi Noi Bai International Airport at 00:20.
The flighttime is about 3h 30m. The distance travelled ("as the bird flies"): 1828 Km. So the average speed is roughly 522 Km.
There is an 1 hour time difference between Shanghai and Hanoi