Flight Shenzhen Bao'an International Airport departs from Shenzhen Shenzhen Bao'an International Airport at 08:10 and arrives at Chongqing Chongqing Jiangbei International Airport at 10:25.
The flighttime is about 3h 15m. The distance travelled ("as the bird flies"): 841 Km. So the average speed is roughly 259 Km.
There is an 1 hour time difference between Shenzhen and Chongqing