Air Freight — The Complete Guide to AWB, Volumetric Weight & Couriers

1. Freight vs Courier — Two Channels

All international air cargo moves through one of two distinct channels, and the difference matters because the pricing, transit, and process are not the same.

Couriers include customs clearance and last-mile delivery in one price; airline freight separates those — you or your forwarder handle clearance and inland trucking at destination.

2. Volumetric Weight — The Core Formula

Aircraft are constrained by space and by weight. A cubic metre of feathers would fill an aircraft with almost no payload revenue; a cubic metre of lead would use negligible space but max out the weight. Air freight solves this by charging on volumetric weight (also called dimensional weight) when the cargo is lighter than it is bulky.

The two channels use different dimensional factors:

The courier factor is more aggressive, which is one reason courier tends to be more expensive per-kilogram for anything bulky. Both factors are written into IATA's published rules (Resolution 502 for freight) and into the couriers' own tariffs.

3. Chargeable Weight — Worked Example

The chargeable weight is the greater of actual (gross) weight and volumetric weight. You pay: chargeable weight × per-kg rate.

The implication: dense cargo goes by freight (weight drives the price; volumetric isn't binding) and bulky cargo needs careful channel choice, because volumetric weight can double or triple what you expect to pay.

4. Cost Components

An airline-freight invoice is built from:

• Air freight rate — Per-kg charge on the chargeable weight. Rates drop in steps (45+ kg, 100+ kg, 300+ kg, 500+ kg, 1,000+ kg) — larger shipments pay lower per-kg.
• Fuel surcharge (FSC) — Per-kg surcharge adjusted periodically with jet-fuel prices.
• Security surcharge (SSC) — Per-kg or flat fee for mandatory security screening under post-9/11 aviation rules.
• AWB & documentation fee — Fixed fee for issuance of the Air Waybill, per shipment.
• Handling & terminal charges — Origin and destination airport handling, build-up/break-down, storage.
• DG / perishable / pharma surcharges — Premium for special handling when the cargo requires it.

5. The Air Waybill (AWB)

The Air Waybill (AWB) is to air cargo what the Bill of Lading is to ocean — but with one key difference: it is not a document of title. An AWB is a non-negotiable contract of carriage and receipt; it cannot be used to transfer ownership of cargo in transit. That changes how payment terms and letters of credit are structured when moving by air.

Two AWBs typically travel with a consolidated shipment:

• Master AWB (MAWB) — Issued by the airline to the forwarder or consolidator. Covers the entire consolidation, from airport to airport.
• House AWB (HAWB) — Issued by the forwarder to the actual shipper, describing that specific shipment within the consolidation.

Air carrier liability under the AWB is governed by the Montreal Convention 1999, which caps damages at around 22 SDR per kilogram unless a higher declared value is paid for. This is far below typical cargo value — another reason cargo insurance (see our guide) is not optional by air.

6. Special Handling: DG, Perishables, Pharma

Dangerous Goods (DG) — IATA DGR

Any cargo classified as dangerous under UN transport rules — lithium batteries, aerosols, perfumes with alcohol, paints, chemicals, dry ice, magnets, engines with residual fuel — requires compliance with IATA Dangerous Goods Regulations (DGR), updated annually. This includes proper UN-approved packaging, hazard labels, marks, a Shipper's Declaration for Dangerous Goods (DGD), and passenger-aircraft / cargo-only restrictions. Shippers and packers must be trained and certified.

Perishables — IATA Perishable Cargo Regulations

Fresh produce, flowers, seafood, and chilled food require temperature-controlled handling from origin through destination. Key elements: pre-cooling, insulated packaging or refrigerated ULDs, short ground time, priority handling, and cold-chain continuity at both airports. Perishable tariffs are typically higher and require advance booking.

Pharma — IATA CEIV Pharma

Pharmaceutical shipments governed by GDP (Good Distribution Practice) travel via CEIV Pharma-certified carriers, ground handlers, and facilities. CEIV (Centre of Excellence for Independent Validators) is IATA's certification program ensuring end-to-end cold-chain integrity for pharma products — temperature-mapped, audited, and documented.

7. Major Cargo Carriers & Airports

Major global air cargo carriers

Dedicated freighter operators: FedEx, UPS, DHL Aviation, Cargolux, Atlas Air, Polar Air. Combination carriers (passenger + freighter): Emirates SkyCargo, Qatar Airways Cargo, Turkish Cargo, Lufthansa Cargo, Air France-KLM Cargo, Korean Air Cargo, China Airlines Cargo, Cathay Pacific Cargo, Singapore Airlines Cargo. Into and out of Tel Aviv (TLV): El Al Cargo, plus most of the above via Ben Gurion Airport.

Major cargo hub airports

8. When to Ship by Air

Air freight costs roughly 5–10× sea freight per kilogram. It is worth the premium when one or more of the following applies:

• Urgency — launch, replenishment to avoid stock-out, last-mile of a promised delivery.
• High value-to-weight ratio — electronics, pharma, jewellery, fashion. Air freight premium is small relative to goods value.
• Perishable — fresh produce, flowers, seafood, chilled pharma.
• Small volume — under ~2 CBM, air often beats LCL on total-landed-cost once local charges are included.
• Security-sensitive — high-value cargo where sea transit exposure is unacceptable.