Flight Pudong International Airport departs from Shanghai Pudong International Airport at 18:50 and arrives at Chongqing Chongqing Jiangbei International Airport at 21:40.
The flighttime is about 3h 50m. The distance travelled ("as the bird flies"): 1687 Km. So the average speed is roughly 440 Km.
There is an 1 hour time difference between Shanghai and Chongqing