What drives the cost of air freight from China to the UK

Air freight from China to the UK is priced on weight, quoted on scope, and settled by the charges that appear at the destination airport. A buyer who compares only the headline rate is comparing different services and calling them one.

Before any figure means anything, a forwarder needs the carton count, the dimensions as packed, the gross weight, and the postcode the goods must reach. Give those four and the quotes that come back are comparable. Leave them vague and each forwarder fills the gap with its own assumption, which is where a good part of the difference between quotes comes from.

What the rate is priced on

Airlines sell space by weight. The weight they charge is the greater of two figures: what the shipment actually weighs, and what its dimensions say it should weigh. The second figure is the volumetric weight, calculated from length, width and height using a divisor that carriers and consolidators set.

That explains why two cartons of the same size can cost different amounts to fly. A carton of textiles fills its box and weighs little, so it is charged on volume. A carton of hardware of the same size is charged on its kilos, because the actual weight runs higher than the volumetric figure. Neither shipment is being penalised. They buy different things: one buys space, the other buys lift.

Measure the cargo as it will be tendered, with pallets and wrapping included. Cartons that were squeezed flat during packing measure differently from the same cartons after a week in a warehouse. When the volume is large, how the cartons are stacked and how much air travels inside them can matter more than a small difference in the rate.

Why two quotes for the same cartons differ

The scope of the quote is the first difference. Four versions are common, and they are not interchangeable:

Airport to airport, where you handle clearance and collection
Airport to door, with the forwarder arranging the UK leg but not the duty
Door to door with duties and taxes excluded
Door to door with duties and taxes paid, which is DDP

A quote that stops at the airport leaves you to appoint a broker, pay the duty and book a truck. Each of those comes with its own invoice, and a low airport-to-airport rate can end up the most expensive way to move the cargo once they are added.

The service level is the second difference. Express capacity moves on the next flight that has space. Economy air consolidates and waits until enough cargo is ready, which is why it costs less. We publish 10 to 15 days door to door to the UK by air, and an express option at 3 to 5 days for cargo that cannot wait. Those two products should not be compared on price alone.

The third is the routing. Cargo lands at a UK gateway airport and then travels by road, and quotes can assume different gateways and different inland distances. A delivery to an address far from the gateway costs more to complete, whatever the air rate says.

The charges that appear after the cargo lands

Air shipments generate fewer destination charges than sea shipments, and the ones that appear are smaller. They are still not zero, and they are usually billed by companies you did not hire.

Terminal handling at the arrival airport
Customs entry, broker fees and any examination charges
Storage once the free period ends
Delivery outside the carrier's standard area, or to a residential address
Waiting time when the receiving site cannot take the vehicle
Fuel, security and peak season surcharges, which sit on top of the base rate

The surcharges deserve a question of their own. Ask whether the rate includes fuel and security, and how long the rate stays valid. A price that holds for a set number of days and then floats is normal on this trade. A rate that adds a second peak season adjustment after you have already paid is a different matter, and it is usually the point where a buyer stops trusting the quote.

Under DDP those separate charges collapse into one price, because the forwarder pays clearance, duty, tax and delivery and invoices you once. Our DDP service runs from collection at your supplier through export clearance, the flight, UK import clearance, duties and taxes, and delivery to the address you give us. Where a charge sits outside that scope, we name it before booking so it does not arrive as a surprise.

A rule for deciding whether to fly

The test that settles most of these arguments is arithmetic you can do yourself.

Take what the air option costs above the sea option for your actual cargo, then compare that difference with the gross margin the stock will earn before the sea shipment would have arrived. If the extra freight eats most of that margin, the cargo can wait. If the margin is several times the difference, the flight pays for itself and the argument is settled.

For mixed orders, split the shipment. Fly the lines that are selling now and send the rest by sea. What matters is the value of the stock that would otherwise sit missing from the shelf, and a small part of a large order can matter more than the whole of a small one.

Two kinds of cargo rarely justify air. The first is bulky goods with a low value per kilo, where the freight approaches the value of the goods themselves: furniture, packaging, ceramics, garden products. The second is cargo that is not ready. Air freight rewards goods that are packed and documented. If the factory still needs a week to finish, the flight leaves without the shipment.

Transit time, and what the clock covers

Our published ranges for the UK are 30 to 35 days by sea and 10 to 15 days by air, measured door to door. On this lane the gap is roughly two to three weeks, which is how long the money tied up in that stock sits idle when you choose the sea option.

The clock starts when the cargo is handed to the carrier. Production, packing, pickup from the supplier and export clearance at the Chinese end sit outside the range. The same applies at the destination: import clearance and inland delivery count inside a door-to-door figure, and fall outside an airport-to-airport one.

A transit time quoted without a scope tells you very little. Ask what the figure covers and when it starts, and you can plan stock against it.

What to send for a quote that holds

A quote request that produces a usable answer contains:

Carton count, dimensions as packed, and gross weight
Whether the cargo can be palletised or has to stay loose
The supplier address in China and the full UK delivery address with postcode
Whether you want airport to airport, or door to door with duties paid
Your deadline, and what happens to your sales if the cargo is late
Anything restricted or unusual: batteries, liquids, powders, magnets, branded goods, wooden packaging

Batteries and liquids need checking before a booking is made, because they change which flights can carry the cargo and which documents travel with it. Say so at the quote stage and the answer accounts for it.

Our warehouse in Yiwu receives, inspects, labels and consolidates cargo before it moves to the airport, which helps when one order comes from several suppliers. Consolidating at origin also means one set of export documents instead of one per supplier.

We have shipped cargo out of China since 2010 and we quote air, sea and rail on the same brief so the comparison is real. Send the details to [email protected] or call +86 152 6732 4109. Quotes go back within 24 hours with the price, the transit time, and the scope that price covers.