Flight Hongqiao International Airport departs from Shanghai Hongqiao International Airport at 12:40 and arrives at Chongqing Chongqing Jiangbei International Airport at 15:15.
The flighttime is about 3h 35m. The distance travelled ("as the bird flies"): 1635 Km. So the average speed is roughly 456 Km.
There is an 1 hour time difference between Shanghai and Chongqing