An air waybill (AWB) is the document that evidences the contract of carriage between a shipper and an airline, and it doubles as the receipt for the cargo. It is non-negotiable: unlike an original ocean bill of lading, it is not a document of title, so holding a copy does not give anyone the right to claim the goods. Every air shipment travels under an 11-digit AWB number (a 3-digit airline prefix, a 7-digit serial number and a check digit), and shipments moved by a forwarder usually carry two waybills at once: a master AWB issued for the airline and a house AWB issued by the forwarder to its own customer. Most of the delay and cost problems in air freight trace back to data on this one document being wrong or inconsistent, which is why it is worth being able to read one. For how ocean documents differ, see our guide to bill of lading types.
What an air waybill is, and what it is not
The Montreal Convention of 1999 (the treaty that governs most international air carriage) says that for cargo "an air waybill shall be delivered" (Article 4(1)) and that the document is prima facie evidence of the conclusion of the contract, of the acceptance of the cargo and of the conditions of carriage stated in it (Article 11(1)). Its statements about the weight, dimensions and packing of the cargo and the number of packages are also prima facie evidence of those facts. Statements about quantity, volume and condition count against the carrier only if the carrier checked them in the shipper's presence, or if they relate to the apparent condition of the cargo (Article 11(2)).
That is the legal weight of the form. What it does not do is convey ownership. The words "not negotiable" are printed on the standard form, and the consignee is named on its face, so the carrier delivers to that named party rather than to whoever holds paper. A common misconception follows from this: people assume the AWB works like the original bill of lading in a letter of credit or a cash-against-documents sale. It does not, which is why sellers who want to keep control of air cargo until they are paid have to use other arrangements agreed in advance (consigning the goods to a bank, for example, or payment before release), and why the shipper, not the paper, holds the right to redirect the cargo (see below).
| Point | Air waybill | Original ocean bill of lading |
|---|---|---|
| Negotiable | No, marked non-negotiable | Usually yes (a straight or sea waybill version is not) |
| Document of title | No | Yes, in negotiable form |
| Receipt for goods and evidence of contract | Yes | Yes |
| Who gets the goods | The named consignee, on arrival, subject to charges and conditions of carriage | The holder of the original, when surrendered |
| Electronic version | e-AWB, widely used | Exists, adoption uneven |
The 11-digit AWB number
IATA's standard describes an AWB number as 11 digits, written in the form 000-00000000. The first three digits are the airline prefix, the issuing carrier's numeric IATA code. The next seven digits are the serial number, and the eleventh digit is a check digit: an unweighted modulus 7 calculation, meaning the seven-digit serial number is divided by 7 and the remainder is the check digit. IATA's own tooling validates numbers against exactly this rule.
A worked illustration (the prefix here is a placeholder, not a real airline): serial 1234567 divided by 7 leaves a remainder of 5, so the number is written 999-12345675. If the last digit is anything other than 5, the number is mistyped. This matters in practice because a single transposed digit means the airline cannot match your booking, your customs filing and your tracking to one consignment. It also explains why you can read the carrier off the first three digits and look up the shipment on that airline's own tracking page.
Master AWB vs house AWB
When you ship with an airline directly, there is one waybill. When you ship through a forwarder that consolidates freight from several customers into one booking, there are two layers.
- Master air waybill (MAWB): the contract between the forwarder and the airline for the whole consolidated lot. Under IATA's cargo intermediary terms, a forwarder that issues AWBs on a principal-to-principal basis shows its own registered name in both the shipper box and the carrier's agent box. The airline's contractual counterparty, and the party that pays the airline, is the forwarder.
- House air waybill (HAWB): the forwarder's own document, issued to each of its customers under its own terms, naming the real shipper and the real consignee. The airline never sees the individual shippers; it sees one master consignment with a manifest of houses attached.
A consolidator therefore does three jobs: it buys capacity from the airline, it builds and tenders the consolidation, and it breaks it down at the destination with a partner, issuing delivery to each house consignee. The destination partner receives the master and the house details electronically (typically as FWB and FHL messages in IATA's Cargo-IMP and Cargo-XML formats) so the customs clearance can proceed per house shipment.
Customs rules have followed this structure. Under the EU's ICS2 (the air release started on 1 March 2023), the party that issues the house AWB, such as a forwarder, declares house-level data and must quote the master AWB number under which the house is moved, according to European Commission guidance. See our guide to ICS2 and the entry summary declaration. A house that does not link to a valid master can leave a consignment held until the filing is corrected.
One variation worth knowing: a direct AWB is when a forwarder tenders freight to the airline on behalf of the shipper and the shipper is named on the master as the contracting party. IATA's legal team describes the awkward questions it raises, including who is responsible for the particulars on the waybill and who bears dangerous goods risk, in a September 2025 presentation. Air Cargo News reported in May 2026 that changes to IATA's framework, which it said were due to apply from 1 July 2026, drew criticism from FIATA over forwarder liability. If you buy through a forwarder, ask which type of waybill your cargo moves on.
How to read an AWB: the boxes that matter
The IATA standard form has dozens of boxes and box numbers differ by airline layout, so treat this as a map to the fields people most often get wrong rather than a numbering key.
| Field | What it holds | What to check |
|---|---|---|
| Shipper and consignee | Names, addresses, contact details (and tax IDs where required) | Must match the commercial invoice and the customs data; the carrier delivers to this named consignee. See consignee, notify party and ultimate consignee |
| Issuing carrier's agent | The forwarder or agent that prepared the AWB | On a consolidation this is the forwarder |
| Airport of departure, destination, routing | Three-letter airport codes, flights | Right airport, not just the right city; many cities have more than one |
| Handling information | Special instructions, ULD references, notifications, dangerous goods statements | If dangerous goods are included, the statement referring to the shipper's declaration must be present and consistent. See shipping dangerous goods by air and sea |
| Number of pieces, gross weight | Packages and actual weight | Must match what is physically tendered and the packing list |
| Chargeable weight and rate | The greater of actual and volumetric weight, and the rate applied | Calculated from the dimensions. See how air freight pricing works |
| Nature and quantity of goods | Description, often with dimensions | Plain description of the goods, not "general cargo"; some carriers refuse the word "consolidation" alone, so check their rule |
| Declared value for carriage | Value for liability purposes, or "NVD" (no value declared) | Declaring a higher value for carriage may carry a supplementary charge. See carrier liability limits |
| Declared value for customs | Value for customs purposes, or "NCV" (no customs value) where allowed | Must not contradict the invoice |
| Prepaid or collect | Whether weight and other charges are paid by shipper or consignee | Typically weight charges and any valuation charge move together. See prepaid vs collect |
| Other charges | Fuel, security, handling and similar items, due carrier or due agent | Compare against the quote before the cargo flies |
| Signatures and execution date | Shipper or agent signature, date and place of issue | Missing signatures on a paper AWB can delay acceptance |
The conditions on the back: Resolution 600b
The reverse of a paper AWB (and the terms incorporated into an e-AWB) carries the conditions of contract set out in IATA Resolution 600b, which is indefinite in duration. Read once, they answer several questions people usually ask only after something goes wrong. The notice on the face says goods are accepted in apparent good order for carriage subject to those conditions, that the cargo may be carried by other means including road unless the shipper gives specific contrary instructions, and that the shipper may increase the carrier's limitation of liability by declaring a higher value for carriage and paying a supplementary charge if required.
The conditions also state that the shipper must comply with all applicable laws and regulations of any country the cargo is carried to or from, and must furnish the information and documents needed to do so. In the version I checked, written complaints must be made to the carrier within set time limits: for damage, immediately on discovery and at the latest within 14 days of receipt; for delay, within 21 days of the cargo being placed at the consignee's disposal; for non-delivery, within 120 days from the date of issue of the air waybill. Any action must be brought within two years. These mirror the Montreal Convention time limits for damage and delay, and carriers' own conditions of carriage may add detail, so confirm the current wording with the airline. Liability amounts are covered in our guide to carrier liability limits and are not repeated here, because IATA has amended the figures with the Convention's periodic revisions.
Who is responsible for what is written on it
Article 10 of the Montreal Convention puts responsibility for the correctness of the cargo particulars on the consignor, and obliges the consignor to indemnify the carrier against damage caused by irregular, incorrect or incomplete statements. IATA's Resolution 600a repeats the principle and extends it to data sent electronically: the shipper or its agent must verify the contents, accuracy and completeness of the messages. In plain terms, if the AWB understates weight, misdescribes the goods or omits a dangerous goods statement, the cost lands on the shipper, even if the forwarder typed the form.
Two other Convention points are useful. Under Article 9, failing to meet the documentary requirements does not void the contract, but the carriage stays subject to the Convention's liability rules. And under Article 12, the shipper (consignor) has a right of disposition: it can have the cargo withdrawn, stopped or redirected, until the consignee's right to delivery begins (Article 13). If the carrier follows such an instruction without requiring the shipper's part of the AWB, it can be liable to a person lawfully holding that part. That is the practical power of the shipper's original copy: it is not title, but it is the control document.
Paper AWB vs e-AWB, and where adoption stands
Article 4(2) of the Montreal Convention lets "any other means which preserves a record of the carriage" replace the delivery of a paper waybill, and that is the legal route for the electronic air waybill. IATA's Resolution 672, the Multilateral e-AWB Agreement, lets airlines and forwarders sign once with IATA and trade electronically with every other signatory, instead of agreeing terms party by party.
IATA's own e-AWB FAQ states that from 1 January 2019 the normal practice on enabled trade lanes is e-AWB, with paper treated as nonstandard and available only by agreement or where treaty, national law or authorities require it. An enabled lane is one where origin and destination have both ratified the same treaty (Montreal Protocol No. 4 of 1975 or the Montreal Convention of 1999), and the FAQ puts roughly 70% of air shipments on such lanes. The industry target recorded in the same FAQ was 100% e-AWB by the end of 2022, which was not reached.
On the current penetration figure, here is what can and cannot be confirmed as of 6 October 2026. IATA's own monthly e-AWB report for September 2020 showed 71.3% penetration of eligible volume. An IATA media briefing for North Asia in 2026 cites an 80% e-AWB penetration rate, in a China-focused slide. I could not find a current global figure in an IATA primary document, and figures of 75% to 85% quoted in vendor articles are not sourced to one, so treat them as unconfirmed. The practical point is stable regardless of the percentage: on most major lanes the e-AWB is the default, a paper original is the exception, and your forwarder or airline will usually decide this for you. Customs administrations that still demand paper are the usual reason a lane stays paper.
Common AWB errors that delay cargo
- Consignee details that differ from the invoice or customs entry. A name spelled two ways or a missing tax ID can stop clearance, and the carrier will not release to a party that is not the named consignee.
- Weights that do not reconcile. Gross weight on the AWB, the packing list and the scale at the acceptance warehouse disagree, so the shipment is re-weighed and rebilled on a different chargeable weight.
- Vague descriptions. "General cargo", "spares" or "samples" invite questions from security screening and customs, and can mismatch the HS classification.
- Dangerous goods not declared or not cross-referenced. A lithium battery or aerosol shipped without the right declaration and handling statement is typically refused at acceptance.
- Wrong prepaid or collect marking. Collect shipments that the consignee did not agree to pay are held until someone pays; see prepaid vs collect.
- A house AWB that does not point to the master. Customs filings such as EU ICS2 tie each house to its master number, so a mismatch can stall the shipment.
- A mistyped AWB number. The check digit rule above catches this early if anyone calculates it.
- Declared values that contradict each other. A declared value for carriage that is wildly lower than the invoice, or a customs value that does not match the invoice, creates both a liability and a customs problem.
What to do next
- Ask your forwarder whether your shipment moves on a house AWB under a master, a direct AWB, or the airline's own AWB, and who the named shipper is on each.
- Request the draft AWB (or the e-AWB data) before the cargo is tendered and check the consignee, weights, description, declared values and payment terms against your invoice and packing list.
- Verify the AWB number format and check digit, then use the airline prefix to track the master consignment.
- Decide on the declared value for carriage deliberately, and compare it with your cargo insurance rather than relying on the carrier's default limit.
- Keep the AWB, house AWB, invoice and packing list together, and note the complaint time limits for damage (14 days), delay (21 days) and non-delivery (120 days) in your claims process.
If you need air freight quoted, more than 29,300 logistics companies are searchable by country and service in the CargoLinked directory, and the public requests board lists freight that shippers have posted for forwarders to quote on directly. The free freight tools include a volumetric and chargeable weight calculator that helps you check the weights before they go on the waybill.
This guide gives general information about air cargo documentation and is not legal, customs or financial advice. Treaty text, IATA resolutions and airline conditions of carriage are revised periodically, and customs requirements vary by country. Confirm current requirements with your airline, your forwarder, the relevant customs authority or a licensed professional before relying on them.
