Flight Beijing Capital International Airport departs from Beijing Beijing Capital International Airport at 06:55 and arrives at Chengdu Chengdu Shuangliu International Airport at 09:45.
The flighttime is about 3h 50m. The distance travelled ("as the bird flies"): 1449 Km. So the average speed is roughly 378 Km.
There is an 1 hour time difference between Beijing and Chengdu