Air Freight vs Sea Freight from China to East Africa: The Real Numbers

Choosing between air freight vs sea freight from China is the biggest cost decision most East African importers make after they have finished haggling over the unit price. Get it right and freight is 8-15% of your landed cost. Get it wrong and it can be 40% or more, erasing the margin you fought for on the factory floor. This guide covers how the two modes are priced, what door-to-door transit times to Mombasa and Nairobi really look like, and where the break-even sits for buyers in Kenya, Uganda, Tanzania and Rwanda.

Air freight vs sea freight from China: how each mode is priced

They are priced on different units, which is why quotes are so hard to compare side by side.

Air is priced per chargeable kilogram. Chargeable weight is the greater of the actual gross weight and the volumetric weight, where volumetric weight is length x width x height in centimetres divided by 6000 (some consolidators use 5000, which is worse for you). On a 6000 divisor, one cubic metre of air freight bills as roughly 167 kg. Consolidated air freight from South China into Nairobi commonly runs around USD 8-15 per chargeable kg all-in, falling as tonnage rises. Express courier door-to-door sits higher, often USD 15-25 per kg, and only makes sense under about 50-70 kg.

Sea LCL is priced per cubic metre (CBM), or per freight tonne if your cargo is unusually dense, on the "whichever is greater" rule of 1 CBM versus 1,000 kg. Consolidated LCL to Mombasa typically runs in the region of USD 300-550 per CBM all-in, roughly KSh 40,000-70,000, with a one CBM minimum charge on most services. Full containers change the maths again: a 20ft box takes about 26-28 usable CBM, a 40ft about 56-58 and a 40ft high cube about 66-68. Past roughly 12-15 CBM, ask for an FCL rate too, because the per-CBM cost usually drops sharply.

All of these ranges move with fuel, season and your volume, so treat them as planning figures and get a live quote before committing.

Density decides the answer more than anything else

Divide your shipment's gross weight in kilograms by its volume in cubic metres. That single number tells you most of what you need to know.

• Above 250 kg per CBM (tiles, fasteners, hand tools, machine parts): sea is overwhelmingly cheaper and air is often impractical.
• 100-250 kg per CBM (most mixed consumer goods, packaged electronics, small appliances): sea wins clearly on cost, so air becomes a decision about urgency, not economics.
• Below 100 kg per CBM (plastic housewares, foam, buckets, empty bottles, light packaging): sea is cheap per kilogram but eats CBM fast, and air is brutal because you pay on volume, not weight.

Ask for carton dimensions and gross weight before you agree a price. A supplier who packs loosely is quietly adding CBM to your freight bill, and asking to nest, flat-pack or ship knocked-down can cut volume by a third.

A worked break-even, including the tax effect

Take 500 kg of goods occupying 3 CBM, so a density of about 167 kg per CBM.

• Sea LCL at USD 420 per CBM: USD 1,260.
• Air: chargeable weight is the greater of 500 kg actual and 3 x 167 = 500 kg volumetric, so 500 kg. At USD 11 per kg: USD 5,500.

A gap of USD 4,240 already. But freight is not tax-neutral in Kenya: customs value is CIF, so freight sits inside the tax base. On a 25% duty line, with IDF at around 2.5%, the Railway Development Levy at around 2% and 16% VAT on the duty-inclusive value, that extra USD 4,240 of freight drags roughly another USD 2,100 of tax behind it. The real gap is closer to USD 6,300.

A useful rule of thumb: air earns its place when goods are worth more than roughly USD 40-60 per kilogram, or when the cost of being out of stock beats the freight premium.

Transit times to Mombasa and Nairobi

Sea. Port to port from Shenzhen, Guangzhou, Ningbo, Shanghai or Qingdao to Mombasa is broadly 25-40 days, at the longer end when the service tranships through Singapore, Colombo, Salalah or Jebel Ali. That is only the middle of the journey. Add 7-14 days at origin while an LCL consolidator fills the container, then 5-14 days at Mombasa for clearance and de-stuffing at the container freight station, longer if a document is wrong. Then Mombasa to Nairobi is one to two days by road, or SGR freight into the inland container depot at Embakasi. Plan on 45-65 days door to door for LCL, a little tighter for FCL because you skip CFS deconsolidation.

Air. The flight itself from Guangzhou, Shenzhen or Hong Kong to Nairobi's JKIA is only about 10-13 hours, usually with a Gulf stop. Door to door on consolidated air freight is realistically 7-14 days once you add collection from the factory, consolidation, security screening, space allocation and JKIA clearance. Express courier is 3-7 days door to door and worth it for samples and emergencies.

When each one actually makes sense

Ship by sea when you are restocking a proven SKU, density is above roughly 150 kg per CBM, margins are tight, and you can hold eight to ten weeks of stock cover. Furniture, hardware, packaging, building materials and machinery almost always go by sea.

Fly when you are moving samples or pre-production checks, the goods are high value and low weight (phone accessories, electronic components, spare parts, jewellery), you are chasing a seasonal window, or you are replacing defective goods a supplier owes you.

The strongest pattern is the hybrid: air 50-100 units to test demand and inspect quality in your own market, then order the container once the SKU proves itself. The freight premium on the test batch is cheap insurance against a container of goods that will not sell.

Consolidation is the lever most buyers underuse

Every consignment carries fixed costs regardless of size: the IDF minimum, the clearing agent fee, the delivery order, CFS and terminal handling. Six separate 0.4 CBM shipments each pay a one CBM minimum plus a full set of those fees. Group them into one 2.4 CBM shipment and you roughly halve the freight and clearance bill.

In practice that means using a consolidation warehouse in Guangzhou, Shenzhen or Yiwu, having every supplier deliver there, and getting cartons re-weighed and re-packed under one packing list. Shopbuddy's free managed sourcing service is built around this: send a photo, video or link, and we find and negotiate with verified manufacturers, then group the cartons so you ship one consignment rather than five.

Paperwork and timing that will move your date

• PVoC and the Certificate of Conformity. Regulated goods must be inspected in China by a KEBS-appointed agency such as SGS, Intertek, Bureau Veritas or CCIC, before shipment. Arriving without a CoC usually means destination inspection plus a penalty in the region of 15% of customs value, and weeks of delay.
• The IDF must be lodged before arrival through KRA's TradeNet and iCMS systems, and in practice a licensed clearing agent lodges the entry for you.
• Invoice, packing list and the bill of lading or air waybill must agree on quantities, weights and values. Mismatches are the most common cause of clearance delays.
• Incoterms. Buy FOB and control your own freight where you can. Door-to-door "tax paid" offers are convenient, but they leave you with no customs entry in your own name, no import VAT to reclaim and no recourse if the goods are detained.

Watch the calendar too. Chinese New Year shuts factories for two to four weeks in late January or February, with rates spiking from December. Golden Week in early October and the Q4 peak both tighten space. Build two to three weeks of buffer around all three.

Making the call

Work out density first, price both modes on the same shipment, then add duty and taxes to each, because freight changes your tax bill as well as your freight bill. Shopbuddy's landed-cost calculator runs that comparison in one place, so you see the per-unit cost delivered to Nairobi rather than the price the factory quoted. Usually the answer is sea for volume and air for speed, samples and proving a product before you commit a container to it.