Air Freight vs. Sea Freight: When Each One Actually Makes Sense
Air freight is faster and more expensive, almost without exception — the real question is whether that trade is worth it for your specific shipment.
Get a Rate1–5 days
Typical air freight transit, origin to Canada
25–45 days
Typical ocean freight transit, Asia to Canada
Chargeable Wt.
Air freight priced by weight, not container space
Air-Only
UAL's mode — we don't broker ocean freight
The honest tradeoff: air freight costs more, every time
Air freight is priced by chargeable weight — the greater of actual or volumetric weight — and is consistently more expensive per kilogram than ocean freight for the same cargo. This isn't a lane-specific quirk; it's structural. An aircraft carries a fraction of a container ship's cargo volume at a much higher operating cost per unit of space. Anyone claiming air freight is cheaper for a given shipment either has an unusual lane or isn't accounting for the full cost of the ocean-side alternative.
Where air genuinely wins: shipments where the cost of the goods sitting in transit for 25–45 days — working capital tied up, spoilage risk, a missed product launch window, a production line waiting on a part — exceeds the extra freight cost. That's most true for perishables, pharma, launch-critical electronics, and time-critical spare parts, and least true for heavy, low-value, non-time-sensitive goods, where ocean's lower cost per kilogram usually wins outright.
The honest framing: air freight is a tool for a specific problem — time value exceeding the cost premium — not a universally better shipping method. A shipment that isn't time-sensitive and has no perishability or value-density reason to fly should probably go by sea. That's not a pitch against our own service; it's the accurate answer for that shipment.
Air freight vs. ocean freight, honestly
Air freight
1–5 days typical transit on this corridor. Priced by chargeable weight. Higher cost per kilogram, every time, for the same cargo. Best for time-sensitive, perishable, or high value-to-weight shipments.
Ocean freight
25–45 days typical transit, Asia to Canada. Priced by container or pallet space. Lower cost per kilogram for heavy, low-value-density, non-time-sensitive cargo. UAL doesn't broker ocean freight directly — we're an air freight specialist.
1–5 vs 25–45
days transit, air vs. ocean, same Asia-Canada corridor
The Honest Answer, Not the Sales Pitch
If your shipment isn't time-sensitive, air freight is probably the wrong call
We're an air freight specialist, not a full-service forwarder pushing every shipment onto a plane. If the cargo can tolerate a 25–45 day transit and isn't perishable or launch-critical, ocean freight's lower cost per kilogram usually wins — and we'll tell you that rather than book a shipment that doesn't need to fly.
UAL positioning — air freight specialist on the Canada–South Asia–ASEAN corridor, not a multi-mode forwarder. See our About page.
Worked example
Same corridor, two different right answers
Take two shipments that could plausibly move by either mode: 40kg of insulin needing a 2–8°C cold chain, and 2,000kg of non-perishable garments with no ship date pressure.
The insulin shipment is the clear air freight case — a pharmaceutical cold chain, covered in detail on our pharmaceuticals commodity page, can't tolerate 25–45 days in an ocean container even if the temperature could theoretically be maintained that long, and the value density easily absorbs air freight's cost premium.
The garment shipment is the harder, more honest case. If there's no launch date or restock deadline driving urgency, 2,000kg of garments is exactly the kind of cargo where ocean freight's lower cost per kilogram usually outweighs air freight's speed — the time value of arriving in days instead of weeks often isn't worth the premium unless there's a real deadline behind it.
What UAL handles for you
We're an air freight specialist on the Canada–South Asia–ASEAN corridor, not a multi-mode forwarder. We'll tell you plainly when a shipment's economics point toward ocean freight instead, even though that's not our service.
Frequently asked questions
Essentially yes on this corridor — typically 1–5 days by air versus 25–45 days by ocean, Asia to Canada, though exact transit varies by specific lane and carrier.
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Transit time ranges reflect typical routings already documented elsewhere on this site (see our origin pages for specific carrier and transit data). The air-vs-ocean cost-per-kilogram comparison reflects structural industry economics — aircraft cargo capacity and operating cost per unit versus container ships — not a specific cited multiplier; treat any precise air-to-ocean cost ratio as something to confirm per lane and season, not a fixed figure. Last verified: July 2026.
Air Freight Fundamentals
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