This work investigates modeling and control of arriving aircraft flows in the vicinity major airports. Aircraft arrival flows are analyzed through a study of TRACON trajectory records for San Francisco International airport. Aircraft trajectory rerouting processes are interpreted from queuing systems perspective: Airport arrival throughput is evaluated as a function of the number of planes present in the TRACON. Based on these observations, an input-output TRACON queuing and landing model is proposed. This model is validated using available TRACON data. It is shown that the model is able to capture the same important behaviors as the physical system. This model is then used to show how regulating the entering flow of aircraft in the TRACON may lead to improved management of TRACON operations while leaving airport throughput essentially unaffected.