Sea or air freight to China?
A straight comparison on cost, time and what each suits — and the split shipment that most families relocating from the UK actually end up choosing.
Ship by sea, fly a small first-need consignment. For a household move that is not a compromise, it is the right answer: sea freight carries the volume economically, and roughly 0.5 m³ to 1.5 m³ by air means you are not living out of a suitcase for three months.
Send everything by air only if the whole shipment is genuinely small — a couple of cubic metres or less — or if a deadline makes the cost secondary. Send everything by sea if the budget is tight and you can manage on what you carry as luggage.
How we compared them
On five criteria, in the order they usually matter to someone relocating: what it costs relative to the alternative, how long it takes door to door, how the charge is calculated (which decides what each mode is good at carrying), how predictable the timeline is, and what it practically suits. We are a mover, so we have a commercial interest in both — the recommendation above is the one we give customers on the phone.
The comparison
| Sea freight | Air freight | |
|---|---|---|
| Relative cost per m³ | Baseline — the economical option | Several times higher |
| Door-to-door planning range | 8–14 weeks | 1–2 weeks |
| Charged on | Volume (m³) | Chargeable weight — volumetric or actual, whichever is greater |
| Good at carrying | Bulky, heavy, low-urgency goods | Dense, compact, urgent goods |
| Bad at carrying | Anything you need next week | Duvets, pillows, coats — bulky and light |
| Timeline predictability | Lower — consolidation and port variables | Higher — flights run to schedule |
| Practical minimum | A minimum charge applies below about 1–2 m³ | Small consignments are viable |
| Sensible maximum | No practical limit | Rarely sensible above about 2 m³ |
| Customs treatment | Identical | Identical |
The row that decides most individual items is the charging basis. Sea freight charges volume, so density is free — books, tools and kitchen equipment ride cheaply. Air freight charges the greater of actual and volumetric weight, so bulk is punished. This is why the instinct to fly the bedding is exactly wrong, and why flying the laptop and the toolkit is exactly right. The air freight page works through the arithmetic with examples.
Who each option suits
| If you are… | Recommendation | Why |
|---|---|---|
| A family relocating on a posting | Sea, plus a small air consignment | The volume needs sea economics; the first fortnight needs air |
| A student going for a year | Sea, as excess baggage | Small volume, no urgency, tight budget |
| Starting a job in three weeks | Air for essentials, sea for the rest | Sea cannot meet the date; air for everything is disproportionate |
| Shipping under 2 m³ total | Price both | At this size the absolute difference is smaller than people assume |
| Moving a whole house | Sea, container or part load | Air freight for 25 m³ is not a real option |
| On an employer-funded move | Sea, plus air — and ask what is covered | Many packages fund an air consignment explicitly |
The split shipment
Here is what a well-planned split actually looks like, from moves we run regularly. The air consignment is around one cubic metre for a family of four.
| By air | Why | By sea instead |
|---|---|---|
| Two weeks of clothing each, season-appropriate | You need to be dressed for work and school | The rest of the wardrobe |
| Work laptop, chargers, adaptors, essential hardware | Employability on day one; dense so cheap by air | The desk, the monitor, the printer |
| School books and children's essentials | Settling a child is worth the freight | The rest of the toys |
| The one comfort item per child | Ask any parent who has done this | — |
| A minimal kitchen kit | Makes a bare flat liveable | The full batterie de cuisine |
| Important documents (copies; carry originals) | Low volume, high consequence | — |
| Prescription medication | Continuity of supply | — |
| Not bedding, towels or coats | Volumetric weight makes these the worst possible air cargo | All of it — or buy on arrival |
Declare the split at the start. Chinese customs generally expects a person's personal effects as a single importation, so an air and sea split is normal but needs entering coherently across both consignments. Tell us at survey, not after the air shipment has flown. See the customs guide.
Questions people ask before booking
Is air freight to China much more expensive than sea?
Several times more per cubic metre. But on a genuinely small consignment the absolute difference is smaller than the multiple suggests, which is why it is worth pricing both under about 2 m³ rather than assuming.
Can I send my whole house by air?
Physically yes, sensibly almost never. The volumetric weight of furniture and soft furnishings makes it disproportionate. We will price it if you want the comparison.
Does air freight clear customs faster?
The process and the documents are identical. Air shipments simply arrive sooner — which means your residence permit needs to be in place sooner, and that catches people out.
How much should I put in the air consignment?
Around 0.5–1.5 m³ works for most families: two weeks of clothing per person, work equipment, school essentials and a minimal kitchen kit. The table above sets out what earns its place and what does not.
Is there a cheaper option than either?
Airline excess baggage, for one or two bags. Beyond that, sea freight is the economical answer and there is no third mode. Rail freight from Europe to China exists for commercial cargo but is not a practical route for household goods on this lane.