Originally Posted by
guv1976
Wirelessly posted (BlackBerry: BlackBerry8530/5.0.0.1030 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)
Airlines use single flight numbers on flights that have a change of aircraft so that their service appears higher up on flight schedules. A "direct" flight is listed ahead of connecting flights on flight-schedule displays, making it more likely that the "direct" flight will be selected by the passenger or travel agent.
It also cuts out a $4.50 facility fee (XF) charged for each airport transited by the government, as the intermediate airport is not considered as transited.
Originally Posted by delta.com
Passenger Facility Charge (PFC)
A maximum of 4 charges per itinerary applies to PFC-approved airports for facilities improvement