Sea vs air freight from China to Nigeria: how to choose

Once your supplier is paid, the next decision is how the goods travel from China to Nigeria. Sea or air is not a matter of preference, it is arithmetic: weight, volume, value, and how fast you need to sell. Get the logic right and you stop overpaying for air on goods that should float, and you stop tying up cash in slow sea freight on goods you needed last month.

How the two are actually priced

The mechanics differ, and that is the whole story.

• Sea freight is priced by volume for smaller loads. Less-than-container-load, or LCL, is charged per cubic metre. A full container, FCL, is a flat rate for the box, whether you fill it or not. Sea cost per kilogram is a fraction of air.
• Air freight is priced by chargeable weight, which is the greater of actual weight and volumetric weight. Bulky-but-light goods get penalised because the volumetric calculation makes them "weigh" more than the scale says.

That single difference, volume-priced sea versus weight-priced air, drives most of the decision.

The honest decision rule

A practical way to choose:

• Ship by sea when the goods are heavy or bulky relative to their value, you have lead time, and the order is large enough to justify either a good LCL consolidation or a full container.
• Ship by air when the goods are small, light and high-value, you need them fast, or the order is too small for sea freight's fixed costs and documentation to make sense.

A rough sense of timing from China to Lagos: sea freight typically runs several weeks door to port, plus clearing time, while air freight is days. The exact numbers move with the season, the route and the port, so treat any single figure as indicative and confirm with your forwarder for your specific lane.

The total cost is more than the freight quote

New importers compare the per-kilo or per-CBM rate and stop there. The real comparison includes:

• Customs duty and levies, which are based on value, not the freight mode. Read HS codes and Nigerian duty to estimate this before you commit.
• Cost of cash tied up in transit. Money sitting in a container for weeks is money not reordering. For fast-moving stock, that carrying cost can quietly exceed the air premium.
• Risk of being out of stock. If you sell out and the reorder is six weeks at sea, you lose sales you cannot get back. Sometimes air on the reorder is the cheapest option you have.

Consolidation: the middle path

If you buy from several suppliers, a forwarder can receive all of your goods at a China warehouse, consolidate them into one shipment, and send them together. This turns a scatter of small parcels into one efficient sea or air movement and usually saves money on both. It also gives you a single point of contact for tracking, which matters when something is delayed.

The most expensive shipment is the one you rushed by air because you forgot to reorder in time. Plan your calendar and most goods can travel by sea.

A workable default for most importers

For a typical Nigerian trader importing general goods, the pattern that works is: bulk restocks by sea, planned well ahead, consolidated through one forwarder, and air freight held in reserve for urgent reorders and small high-value items. That keeps your landed cost low without ever being completely out of stock.

First things first

None of this matters until the supplier is paid and the goods are made. When you reach that point, you can make a request to settle your supplier on Alipay in RMB from Naira, then hand the goods to your forwarder and choose the mode that the arithmetic, not the panic, points to.