Inferring package location from tracking gaps

Tracking events for international packages are sparse by design — the package is only scanned at specific major facility handoff points, not throughout its entire journey. Understanding the typical route for your origin-destination pair helps you interpret gaps intelligently.

Typical China-to-US routing

Packages from Chinese vendors typically move through a Chinese origin sorting facility, consolidate into freight at a major Chinese hub (often Shanghai, Beijing, or Guangzhou), travel by air freight to a US gateway (typically Los Angeles, Chicago, New York, or Miami depending on the service), then enter the USPS mail stream after customs processing.

The gap between the last China scan and the first US scan represents the air freight leg plus pre-departure processing. This leg typically shows no tracking events and takes three to seven days for standard services. Packages go dark during this leg — no scans, no events, just absence of information until the US arrival scan appears.

Reading the routing from gateway city

The city where the package first appears in the US tracking tells you which gateway it cleared through. Los Angeles is most common for West Coast bound packages. Chicago for Midwest. New York for East Coast. This can give you a rough geographic sense of where the package is heading even before a delivery scan, because packages typically move from the gateway toward the destination rather than criss-crossing.

What gaps mean in each phase

A gap while the package is "at origin" means it is waiting for the next freight consolidation departure. A gap after a US customs arrival scan means it is in customs queue. A gap after a USPS acceptance scan means it is moving through the domestic network between sorting facilities. Each phase has a characteristic gap duration. A 10-day gap while in customs is concerning; a 10-day gap between the China dispatch and US arrival scan is normal.