Flight Lukou Airport departs from Nanjing Lukou Airport at 14:20 and arrives at Chongqing Chongqing Jiangbei International Airport at 16:50.
The flighttime is about 3h 30m. The distance travelled ("as the bird flies"): 1361 Km. So the average speed is roughly 389 Km.
There is an 1 hour time difference between Nanjing and Chongqing