Flight Chengdu Shuangliu International Airport departs from Chengdu Chengdu Shuangliu International Airport at 19:30 and arrives at Shenzhen Shenzhen Bao'an International Airport at 21:50.
The flighttime is about 1h 20m. The distance travelled ("as the bird flies"): 1131 Km. So the average speed is roughly 848 Km.
There is an 1 hour time difference between Chengdu and Shenzhen