Speed vs cost — the fundamental trade-off in international logistics.
Air freight and sea freight are the two dominant modes for intercontinental shipping. Air freight offers transit times of 1–7 days but costs 4–6× more per kg than sea freight. Sea freight is dramatically cheaper for large or heavy shipments but takes 15–40 days depending on the route. The right choice depends on your cargo value, weight, urgency and supply chain tolerance for delay. From Portugal, sea freight to Asia takes 25–35 days via major shipping lines; air freight takes 2–5 days. For most high-value low-weight goods (electronics, fashion, pharmaceuticals), air is preferred. For bulk commodities, raw materials, furniture and anything that can wait, sea is the economical choice.
| Criteria | ✈️ Air Freight | 🚢 Sea Freight |
|---|---|---|
| Transit Time (Portugal–Asia) | 2–5 days | 25–35 days |
| Transit Time (Portugal–USA) | 1–3 days | 18–25 days |
| Cost per kg | €4–€12/kg | €0.30–€1.50/kg |
| Minimum shipment size | No minimum | LCL from ~1 CBM |
| CO2 emissions | High (~500g CO2/tonne-km) | Low (~10g CO2/tonne-km) |
| Cargo tracking | Real-time AWB tracking | Milestone tracking (less frequent) |
| Reliability / schedule | High — daily flights | Weekly sailings — weather delays |
| Cargo size limits | Length/weight limits per aircraft | Full container — virtually no limit |
| Security/theft risk | Lower — faster transit, airport security | Higher — longer transit, multiple port transfers |
| Documentation | Air Waybill (AWB) | Bill of Lading (B/L) |
Choose air freight when: your cargo is time-sensitive, high-value relative to weight, perishable, or urgently needed. Choose sea freight when: cost is the priority, your cargo is heavy or bulky, you have sufficient lead time, and the goods are not perishable. The break-even point where air and sea cost the same per unit value is roughly when cargo is worth €50+ per kg — below that, sea is almost always cheaper overall.
Choose air when: your goods are time-sensitive (e.g. seasonal fashion, electronics launch), high-value relative to their weight (jewellery, pharmaceuticals, samples), perishable (fresh food, flowers), or when a customer urgently needs stock. The freight cost is justified when the cargo value per kg is high enough that air freight adds only a small percentage to total landed cost.
Air freight from Portugal typically costs €4–€12 per kg depending on destination and carrier. Sea freight (FCL or LCL) costs €0.30–€1.50 per kg equivalent. For a 100 kg shipment, air might cost €800–€1,200 versus sea at €50–€150. The difference grows dramatically with shipment weight.
From Lisbon or Leixões port: to Northern Europe (2–5 days), to UK (3–5 days), to USA East Coast (12–18 days), to USA West Coast (20–28 days), to China/East Asia (25–35 days), to Brazil (10–18 days). Actual times vary by shipping line and port of destination.
Yes. LCL (Less than Container Load) allows small businesses to share a container, paying only for the space they use. Minimum LCL shipments start from around 1 CBM (approximately 500 kg equivalent). A freight forwarder handles the consolidation, making sea freight accessible for shipments as small as a few boxes.
Perishables (fresh food, flowers, temperature-sensitive pharmaceuticals), time-critical goods (spare parts for production lines), high-security items where extended transit increases theft risk, and items requiring very precise delivery timing.
Compare DHL, UPS, FedEx, DPD and GLS rates instantly — no account required.
Get a Free Quote →