How International Shipping Works: A Step-by-Step Guide

International shipping involves more than placing cargo on a ship or aircraft. Before goods move between countries, the shipment must be measured, classified, packaged, documented, booked with an appropriate carrier and prepared for export and import requirements.

A freight forwarder coordinates the route, transportation, carrier handling, documentation and delivery process. The shipper’s role is equally important because accurate cargo details are needed for quoting, booking and customs preparation.

Understanding the process before requesting a quote can help you choose the right shipping method, prepare the required documents and avoid preventable delays.

Stage	What Happens
Shipment Planning	The cargo, origin, destination, dimensions, weight, timeframe and required service are confirmed.
Shipping Method	Air freight, LCL, FCL, vehicle shipping or another suitable method is selected.
Quotation	Freight, pickup, handling, documentation and delivery requirements are reviewed.
Cargo Preparation	The goods are packaged, labelled, weighed and measured for transport.
Documentation	Commercial, transport, export and destination documents are prepared.
Booking and Export	Carrier space is reserved, cargo is collected and applicable export requirements are completed.
International Transport	The shipment moves by air, ocean, road, rail or a combination of transport modes.
Import Clearance	Destination customs requirements, duties and release procedures are completed.
Final Delivery	The released cargo is collected from the terminal or delivered to the consignee.

1. Define the shipment before choosing a shipping method

The first step is not selecting an airline or vessel. It is defining exactly what must be moved.

A useful shipment brief identifies the origin, final destination, cargo description, number of pieces, packaging type, dimensions, total weight and required delivery timeframe. It should also state whether the cargo is commercial merchandise, personal effects, household goods, machinery, a vehicle or another shipment type.

The description must be specific. “Parts,” “supplies” or “personal items” may not provide enough information for classification, carrier acceptance or customs review. A clearer description explains what the goods are made of, how they will be used and whether they contain batteries, liquids, chemicals, food, wood, machinery or other materials that may require additional handling.

This is also the point at which the shipper should disclose unusual characteristics. Heavy, oversized, fragile, temperature-sensitive, regulated and potentially dangerous cargo cannot be treated like ordinary general freight.

Transport Canada regulates the movement of dangerous goods in Canada and requires appropriate classification, documentation and safety information when the regulations apply. A shipment should therefore never be booked as ordinary cargo when its contents may be regulated.

2. Choose between air freight, LCL and FCL

The best international shipping method depends on the shipment rather than the destination alone.

Air freight is generally considered when timing matters, the cargo is suitable for air transport, or the shipment’s size and value justify the higher transportation cost. Airlines consider both actual weight and the space occupied by the cargo, which is why large, lightweight cartons may be priced using chargeable or dimensional weight.

Ocean freight is generally more practical for larger, heavier or less time-sensitive shipments. Cargo that does not fill a complete container can move as Less than Container Load, commonly called LCL. Several compatible shipments share container space and are separated after arrival.

A Full Container Load, or FCL, reserves a complete container for one shipper. FCL may be appropriate when the cargo volume is substantial, when the shipper wants exclusive use of the container or when consolidation is not suitable.

LCL should not automatically be assumed to cost less than FCL. LCL pricing may include consolidation, warehouse, handling and destination charges. Once a shipment reaches a certain volume, the total cost difference between shared and exclusive container space can narrow. The decision should be based on the complete quote, cargo volume, route schedule and service requirements.

BriCargo’s existing Air Freight vs Ocean Freight guide can help customers compare the two primary modes, while its LCL freight service explains how shared-container shipping works.

3. Agree on who is responsible for each part of the shipment

International shipments often involve several locations and several parties. These may include the shipper, consignee, freight forwarder, carrier, customs broker, warehouse, port or airport terminal and destination delivery provider.

Before booking, the parties should understand who is responsible for:

collecting the goods from the shipper;
preparing export documentation;
arranging the main international transportation;
purchasing cargo insurance;
completing import clearance;
paying duties and taxes;
collecting or delivering the cargo after arrival.

A commercial transaction may use an Incoterms® rule to define how costs, obligations and risk are divided between the buyer and seller. Incoterms® do not replace the sales contract or determine every customs requirement, but they help identify which party is responsible for particular transportation stages. The International Chamber of Commerce states that the rules are intended to reduce uncertainty by defining buyer and seller responsibilities.

Terms such as EXW, FCA, FOB, CIF, DAP and DDP should not be selected simply because they are familiar. The chosen term must fit the transportation mode, the parties’ capabilities and the agreed place of delivery.

For a closer comparison of import clearance and delivery obligations, read our DDP vs DAP guide.

For personal shipments, an Incoterms® rule may not be relevant in the same way. The service scope still needs to be clear, particularly whether the quote is port-to-port, airport-to-airport, door-to-port or door-to-door.

4. Request a quote based on complete cargo information

An international freight quote is only as accurate as the information used to prepare it.

The forwarder needs to know where the cargo is located, where it must go, how it is packed, how much space it occupies and what services are required before and after the main transportation.

A quote based on estimated carton sizes or an incomplete cargo description may need to change when the shipment is physically measured or inspected. This is especially important for air freight and LCL, where dimensions and volume directly affect pricing.

The shipper should also confirm what the quotation includes. A base ocean or air rate may not represent the complete door-to-door shipping cost.

Depending on the shipment, the complete cost may involve pickup, warehousing, export handling, documentation, consolidation, terminal charges, international freight, destination handling, customs brokerage, duties, taxes, storage, inspection fees and final delivery.

This does not mean every shipment will incur every charge. It means the service scope should be understood before the booking is approved.

A useful question is not only, “What is the shipping rate?” It is, “What is included in this quote, and which costs remain payable at the destination?”

5. Package and measure the cargo correctly

International freight passes through warehouses, terminals, loading equipment, aircraft, containers and other handling environments. Packaging that is adequate for local delivery may not be adequate for a long international movement.

Cartons should be suitable for the cargo’s weight and should not collapse when stacked. Palletized goods should be stable, secured and contained within the pallet footprint. Fragile, high-value or irregular cargo may need foam protection, reinforced cartons, crates or other specialized packaging.

Wood packaging can also be subject to destination requirements. The shipper should confirm whether pallets, crates or dunnage must meet applicable treatment and marking standards before the cargo is accepted.

Once packed, every piece should be measured accurately. Record the length, width, height and gross weight of each carton, pallet or crate. Do not use the dimensions of the product before packaging because the carrier charges for the shipment in its transport-ready condition.

Labels and markings should remain readable during handling. Shipment references, consignee information and handling instructions should match the booking documents.

Customers preparing cartons, pallets, crates or household goods can also review BriCargo’s Packaging Requirements for International Shipping guide.

6. Prepare the documents required for the shipment

There is no single document package that applies to every international shipment. Requirements depend on the origin, destination, cargo, value, transportation mode and whether the movement is commercial or personal.

Common commercial freight documents include a commercial invoice, packing list and a transport document such as a bill of lading for ocean freight or an air waybill for air cargo. Other shipments may need a certificate of origin, export declaration, licence, permit, inspection certificate, dangerous-goods documentation, vehicle ownership records or cargo-specific certificates.

A commercial invoice normally identifies the seller, buyer, goods, value, currency, country of origin and transaction details. Customs authorities use this information when reviewing the shipment and determining its treatment.

The packing list describes how the cargo is physically packed. It can show carton or pallet counts, contents, dimensions, weights and package markings. It should correspond with the invoice and the cargo presented for transport.

The bill of lading or air waybill records important transportation information and connects the shipper, consignee and carrier. The exact legal function differs between document types and shipment arrangements, so the shipper should not treat every transport document as interchangeable.

Official U.S. trade guidance advises exporters to begin by confirming requirements with the foreign buyer or importer and the freight forwarder because special products and destinations may require additional documents.

Canadian export reporting requirements

Commercial goods exported from Canada may require an export declaration. The CBSA states that non-restricted commercial goods valued at CAN$2,000 or more generally require an export declaration when moving to destinations other than the United States, while restricted goods may require declarations and permits regardless of value. Exceptions and special situations apply, so the specific shipment must be checked against current CBSA guidance.

The Canadian Export Reporting System is the CBSA’s electronic system for submitting export declarations and eligible summary reports.

A freight forwarder or customs service provider may assist with parts of the reporting process, but the exporter remains responsible for supplying truthful and complete information.

7. Book the Shipment and Complete Export Requirements

After the quote is accepted, the forwarder requests carrier space and confirms the proposed route, departure schedule, cargo cut-off and handling instructions.

Air cargo may be collected or delivered to a cargo facility for screening and airline acceptance. LCL cargo normally moves through a consolidation warehouse, while FCL shipments require container loading and terminal coordination.

The cargo presented for transport must match the booking. Changes in the piece count, dimensions, weight or contents can affect carrier acceptance, documentation and cost.

Applicable export declarations, permits and security requirements should be completed before the cargo reaches its cut-off. Missing or inconsistent information can prevent the shipment from departing as planned.

8. International Transport and Shipment Tracking

Once export handling is complete, the cargo begins the main international journey by air, ocean, road, rail or a combination of modes.

The visible flight or sailing is only one part of the total transit time. The complete schedule can also include pickup, consolidation, cargo cut-offs, terminal handling, connections, transshipment, deconsolidation, customs release and inland delivery.

A shipment described as having a particular sailing duration may therefore take longer door to door. Customers should ask whether an estimate refers to:

airport-to-airport or port-to-port transportation;
departure-to-arrival time;
or the complete pickup-to-delivery process.

Tracking also differs by shipment type. Updates may correspond to booking confirmation, warehouse receipt, carrier departure, transshipment, arrival, customs status or delivery. Some freight milestones are not reported with the same frequency as express-parcel scans.

A responsible forwarder should explain which milestones are available and communicate material changes instead of promising constant real-time visibility where the carrier system does not provide it.

9. Complete Import Clearance and Final Delivery

Arrival at the destination port or airport does not mean the cargo is immediately available for collection.

The consignee, destination agent or customs broker may need to submit documents, answer customs questions and arrange payment of applicable duties, taxes or destination charges before release.

Once released, the cargo can be collected from the terminal or delivered under the agreed service. Residential deliveries, vehicles, containers and oversized freight may require appointments or specialized unloading equipment.

The consignee should inspect the shipment and retain shipping documents, photographs and packing records in case damage or shortages must be reviewed.

Why international shipments are delayed

International freight can be delayed even when the main transportation operates normally.

Common causes include incomplete documents, inaccurate cargo descriptions, late delivery to the terminal, missed cut-off times, customs inspections, missing permits, carrier schedule changes, port congestion, weather, transshipment problems and delays in paying destination charges.

Not every disruption is within the freight forwarder’s control. The forwarder’s value is in planning the movement carefully, identifying requirements early, coordinating the parties involved and helping the customer respond when circumstances change.

The shipper can reduce preventable problems by giving complete information, preparing documents early, packaging the goods correctly and ensuring the consignee is ready for import clearance.

What to prepare before requesting an international shipping quote

Before contacting a freight forwarder, gather the cargo’s pickup location, destination, description, number of pieces, packaging type, dimensions and total weight. Also identify the preferred shipping timeframe and whether pickup, customs coordination, insurance or final delivery may be required.

Commercial shippers should be prepared to explain the transaction, buyer, seller, cargo value and agreed delivery responsibilities. Vehicle shippers may need the year, make, model, identification number, ownership documents and information about the vehicle’s condition. Customers moving household goods should prepare a detailed inventory rather than describing the shipment only as personal effects.

The more complete the initial information is, the more useful the first recommendation and quote can be.

Plan your international shipment with BriCargo Group

International shipping becomes easier to manage when the route, cargo, documentation and delivery responsibilities are planned together.

BriCargo Group coordinates air freight, ocean freight, LCL consolidation, vehicle transportation, relocation cargo and specialized freight across international routes. Our team can review your cargo details, explain the available shipping methods and identify the information required before booking.