Flight Pudong International Airport departs from Shanghai Pudong International Airport at 20:30 and arrives at Chengdu Chengdu Shuangliu International Airport at 23:55.
The flighttime is about 4h 25m. The distance travelled ("as the bird flies"): 1986 Km. So the average speed is roughly 450 Km.
There is an 1 hour time difference between Shanghai and Chengdu