Originally Posted by Samuelson

I have done some research in generic express air fleet scheduling. Generally, the nightly fleet schedule involves x number of aircraft leaving the same number of cities enroute to the hub each night. Along the way some will make one or two enroute stops and others will fly nonstop to the hub. The same would be true of the return flights to the cities of origin.

Would this accurately describe the nightly fleet schedule at UPS and FedEx? If so, are there significant changes from month to month?