What is a through fare?

What does a through fare cover that separate fares do not?

A through fare is built around the journey rather than around individual flights, so the reference point for the ticket's rules is the final ticketed destination, not an intermediate connecting point. American Airlines describes the building blocks of such a journey in its glossary: a flight segment is a nonstop point-to-point flight with one takeoff and one touchdown, and a stopover is a planned stop in a city or airport for more than four hours. [3] Those definitions matter because some of the carrier's obligations are measured against the next stopover or the final destination rather than against a single leg. [3]

In practice, a single fare also concentrates the paperwork. American states that its Conditions of Carriage apply in addition to the terms printed on the ticket, its published fare rules and its filed tariffs, and that a ticket is valid only when the passenger meets all the fare requirements, which may include dates of stay, military status, official government business or attendance at an event. [3] That is the practical difference from a conjunction ticket or a pair of separately bought fares: with separate fares, more than one set of fare rules has to be met, and a breach on one part does not automatically undo the other.

The single fare also fixes the ticket's life. American's general rule is that an unused ticket must be started within one year of the date it was first issued, and a partially used ticket must be completed within one year of the first completed flight, unless the ticket says otherwise. [3]

How does a through fare change baggage handling?

Baggage is the clearest place where one fare and several fares produce different outcomes. Under American's conditions, a passenger may check bags only on the day of travel, and the bags must travel to the same ticketed final destination as the passenger. [3] Bag fees are charged per person, each way, and are non-refundable. [3]

Even inside one ticket, through-checking has limits. American says a passenger may have to pay bag fees again if they are connecting on another airline, or if their connection on American is more than 16.5 hours later. [3] Bags are also not through-checked past U.S. customs: when arriving in the United States from an international city, the passenger claims checked bags before going through Customs. [3]

Liability follows the itinerary as well. For domestic itineraries American pays the provable value of lost, damaged or delayed checked bags up to $4,700, or up to $5,000 where excess value is declared. [3] On international itineraries, liability for baggage is set by the Montreal Convention and the Warsaw Convention and is not subject to change or modification by American. [3] For journeys that span more than one carrier, the trade rules sit in industry tariff material: IATA describes its Passenger Tariffs Conference Composite Manual as including definitions, mileage, fare and currency principles and interline baggage rules, and its Multilateral Interline Traffic Agreements manual as presenting interline agreements. [1] The mechanics of baggage interlining depend on those interline agreements being in place.

How do changes and refunds work on a through fare?

Refunds on a single ticket are assessed against the ticket as a whole. American offers a full refund where the ticket was bought at least seven days before departure and the trip is cancelled within 24 hours of purchase, and refunds a refundable ticket in full if travel has not started, or the unused value if it has; refunds go to the original form of payment. [3] A non-refundable ticket is not refunded in cash, but if it is cancelled before departure American cancels the ticket and issues a travel credit for future travel. [3]

Disruption triggers a refund rather than a credit. American refunds the ticketed fare, including taxes and fees, when it cancels a flight or makes a significant itinerary change and the passenger chooses not to fly, and it treats these as significant: a change of 3 or more hours on domestic itineraries or 4 or more hours on international ones, a change of origin or destination airport, a downgrade to a lower cabin, or an increased number of connections. [3] When a cancellation or a delay would cause a missed connection, American rebooks the passenger on the next American flight with seats at no additional cost, and if no American flight is available until the next day and the disruption is the airline's own, it rebooks on a partner airline at no additional cost. [3]

Rewards tickets sit inside the same framework: the fare construction of the award, not the cash price, decides which of these rules apply. Fare construction is where those conditions are assembled.

Where does the protection stop?

• No schedule guarantee. American states that its flight schedule is not guaranteed and is not part of its contract, and that it is not liable if it is late or a passenger does not make a connection, if it or a partner cancels a flight or route, if checked baggage is late (except as required by statute, regulation or Convention), or for special, incidental or consequential damages. [3]
• Events beyond the carrier's control. In cases such as weather, strikes, civil disturbances or public health emergencies, American refunds the unused portion of a ticket that still has value to the original form of payment, and beyond that states it is not liable. [3]
• Codeshares. On a codeshare flight operated by a partner, American directs passengers to check with the operating airline, and where a passenger arrives at the final destination on another airline, that airline handles delayed-bag queries. [3]
• Denied boarding. Involuntary denied boarding compensation is measured by how late the passenger reaches the next stopover or final destination, and no compensation is due if American gets the passenger there within one hour of the original arrival time. [3]
• Prohibited fare combinations. American lists buying a ticket without intending to fly all flights to obtain a lower fare (hidden city ticketing) and combining two or more roundtrip excursion fares end-to-end to circumvent minimum stay requirements (back-to-back ticketing) as prohibited, and reserves the right to cancel unused parts of the ticket, refuse carriage, withhold an otherwise refundable fare and charge the difference. [3]
• Applies to American only. Everything above is American Airlines' Conditions of Carriage as updated 13 August 2026, and it governs transportation provided by American. Carriers publish their own conditions of carriage and fare rules, so a through fare issued by another airline has to be read against that airline's own document. [3]

Frequently asked questions

Do I have to collect my bags in the middle of a through fare journey?

Not normally: American requires checked bags to travel to the same ticketed final destination as the passenger. [3] The exception is arrival in the United States from an international city, where bags are claimed before Customs. [3]

Can I get a refund if the airline moves my flight time?

Yes, if the change reaches American's threshold: 3 or more hours on a domestic itinerary or 4 or more hours on an international one, a change of origin or destination airport, a downgrade to a lower cabin, or more connections than ticketed. [3]

What happens if I miss a connection on one ticket?

American does not guarantee its schedule and states it is not liable when a passenger is late or misses a connection, but when a delay would cause a missed connection it rebooks the passenger on the next American flight with seats at no additional cost. [3]

Is it allowed to join two cheap fares end to end?

American prohibits combining two or more roundtrip excursion fares end-to-end to circumvent minimum stay requirements, and prohibits buying a ticket without intending to fly all flights to gain a lower fare. [3] For a compliant split, see the separate-ticket connection checklist.

Related pages

Terms: conjunction ticket, baggage interlining, fare construction, interline agreement. Guides: separate-ticket connection checklist, alliance single-ticket protection. All entries: glossary.

Sources

Sources checked on 18 October 2026. Carrier-specific rules here come from American Airlines; the conditions of carriage of other airlines, and any alliance-wide rules, are not covered on this page.

1. IATA — Manuals, Standards & Regulations, checked 18 October 2026
2. American Airlines Conditions of Carriage, checked 18 October 2026