Air China Chongqing Base and China Southern Chongqing Base have their own advantages, so they need to be selected according to specific needs. Generally speaking, they have little difference in flight arrangement and service quality, but the specific differences are as follows:

* Flight arrangement: The flight arrangement of Air China Chongqing base is more flexible, including early flights, connecting flights and alternate flights, while the flight arrangement of China Southern Chongqing base is relatively fixed.

* Service quality: The service quality of Air China Chongqing Base and China Southern Airlines Chongqing Base is good, but Air China Chongqing Base is slightly superior in food quality and taste.

To sum up, both have their own advantages and can be chosen according to personal needs.