Several factors influence what you ultimately pay when shipping via FedEx internationally. Weight is often the biggest driver—larger or heavier parcels are more expensive, and both actual and dimensional weights are considered. Distance (zones), shipment destination (particularly to remote or less accessible regions), and your selected service speed (from Economy to First or Next Flight) all further impact final pricing. Surcharges related to fuel, customs clearance, and security may also apply, and rates can fluctuate in response to market and seasonal factors.