A question we get constantly is some version of “how many days from China to the US?” It is a reasonable question, and the honest answer is that a single number is not the useful part. What is useful is understanding the stages, because that is where the variability lives — and where you can actually do something about it.

Five stages, not one

A shipment’s total time is the sum of stages that behave differently from each other:

  1. Processing at origin. Goods received, checked, packed, labelled, and made ready for export. For a shipment that needs consolidation from several suppliers, this is the stage where the last supplier’s timeline sets the pace.
  2. Export handling and departure. Booking, documentation, and getting the shipment onto the aircraft or vessel. Ocean schedules in particular have fixed sailing dates — miss one and the next is a week away.
  3. Main carriage. The flight or the ocean leg itself. On ocean this is the largest single block of time; on air it is comparatively small.
  4. Import clearance. Customs entry, duty and tax assessment where applicable, and any inspection. Highly variable, and highly dependent on the accuracy of the paperwork you supplied.
  5. Final delivery. Linehaul to the destination region and last-mile delivery to the address or fulfilment centre.

When a provider quotes “7–10 days” without saying which stages it covers, the number is close to meaningless. It might be door-to-door. It might be airport-to-airport, leaving you to add clearance and delivery yourself.

What makes it move

Ocean schedules. Vessels sail on fixed days, not on demand. A shipment that is ready the day after a sailing waits for the next one.

Peak season. Capacity tightens and handling slows in the run-up to major retail periods. Space that was straightforward in a quiet month becomes something to book ahead for.

Customs. This is the big one. A clean entry with accurate documents clears in the normal course. An entry with a value that does not match the goods, a vague description, or an HS code that does not describe the product gets held — and a hold adds days, not hours.

Destination handling. Once cleared, the shipment still has to be sorted and delivered. Remote destinations and addresses outside normal delivery coverage add time, and in some places add specific delivery days.

Documentation completeness. Missing or inconsistent paperwork does not just slow clearance; it can stop the shipment leaving origin in the first place.

How to plan instead of guess

The practical approach is to stop treating transit time as one figure and start planning each stage:

  • Ask the quote to say what it covers. Door-to-door, or port-to-port? Does it include clearance and final delivery?
  • Buffer the stages you do not control. Customs and ocean schedules are not yours to manage, so build margin around them rather than assuming them away.
  • Ship against your stock position, not against a feeling. If a product sells steadily, work backwards from when you need it on the shelf.
  • Fix the paperwork before dispatch. The cheapest way to protect your timeline is to make sure nothing about the shipment invites a question.
  • Choose the mode deliberately. Air and ocean are not better or worse in the abstract — they are different trade-offs between cost per unit and time, and the right one depends on the product and where it sits in its lifecycle.

What we will not do

We will not put a fixed number of days in a blog post, because it would be wrong for most shipments and misleading for the rest. What we will do is quote your actual shipment — with the stages it covers stated explicitly, and the charges outside the rate named — so you can see where the time goes and decide accordingly.