Flight Hangzhou Xiaoshan International Airport departs from Hangzhou Hangzhou Xiaoshan International Airport at 16:00 and arrives at Chongqing Chongqing Jiangbei International Airport at 18:40.
The flighttime is about 3h 40m. The distance travelled ("as the bird flies"): 1534 Km. So the average speed is roughly 418 Km.
There is an 1 hour time difference between Hangzhou and Chongqing