how to track a international package by usps To track an international package sent via USPS, you can use the tracking number provided when the package was shipped. Visit the USPS website or use the USPS mobile app to enter the tracking number in the tracking tool. This will provide detailed information about the package’s journey, including its departure, transit, customs clearance, and delivery status. Some international packages may be tracked through local postal services once they arrive in the destination country. USPS also offers a service called Global Express Guaranteed for faster, trackable international shipments with detailed updates.