Flight Hangzhou Xiaoshan International Airport departs from Hangzhou Hangzhou Xiaoshan International Airport at 15:20 and arrives at Chengdu Chengdu Shuangliu International Airport at 18:10.
The flighttime is about 3h 50m. The distance travelled ("as the bird flies"): 1834 Km. So the average speed is roughly 478 Km.
There is an 1 hour time difference between Hangzhou and Chengdu