Codeshare flights often confuse passengers because more than one airline can appear on the same booking. You may buy a ticket from one airline, see its flight number on your itinerary, and reasonably assume that airline is responsible for your journey, only to discover later that another airline actually operated the flight.

A common misconception is: “I booked Airline A, so Airline A is responsible.” Under EU261 Regulation, that is not always the case. When a codeshare flight is delayed, cancelled, or overbooked, responsibility does not automatically lie with the airline that sold the ticket.

The short answer is that EU261 apply to codeshare flights, but EU air passenger rights usually depend on the operating carrier, meaning the airline that actually flew (or was supposed to fly) the aircraft.

What Is a Codeshare Agreement?

A codeshare agreement is a commercial partnership between two or more airlines that allows them to market and sell seats on each other’s flights. Through this arrangement, airlines can offer routes and destinations they do not operate themselves, giving passengers a wider range of travel options.

Airlines participating in a codeshare agreement may be based in different countries and often belong to the same airline alliance or have a separate commercial partnership.

What Is a Codeshare Flight?

A codeshare flight is the result of a codeshare agreement.

It is a single flight that:

• is marketed and sold by one airline under its own flight number, but
• is operated by another airline, which provides the aircraft and crew

When you book a codeshare flight, you may deal with one airline during booking, but your journey may be operated by a partner airline. In some cases, two or more airlines share the same flight and divide the revenue under the codeshare arrangement.

Does EU261 Apply to Codeshare Flights?

Short answer: yes, EU261 can apply to codeshare flights.

The fact that a flight is sold as a codeshare does not remove EU261 protections. Passengers on codeshare flights may still be entitled to EU261 compensation, care, and other rights when a flight is delayed, cancelled, or disrupted.

What matters under EU261 is not which airline sold the ticket, but which airline operated (or was meant to operate) the flight.

Under EU261, the airline flying the plane (operating the flight) is responsible, not the one that sold the ticket.

This is because the operating airline:

• provides the aircraft and crew
• controls flight safety and scheduling
• is best placed to prevent or manage disruptions

Why the marketing airline is usually not liable?

The marketing airline sells the ticket and places its flight number on the booking, but it does not control the flight itself. Because of this, the marketing airline is generally not responsible for EU261 obligations unless it also acted as the operating carrier.

Air Passenger Protections on Codeshare Flights (EU261)

On codeshare flights, passengers are entitled to the same protections as on any other covered flight, including:

• Right to care. Meals, refreshments, accommodation if necessary, transport between the airport and hotel, and access to communication during delays or cancellations.
• Right to re-routing (a new flight). Rebooking to the final destination at the earliest opportunity or at a later date chosen by the passenger.
• Right to a refund. A full refund of the unused ticket if the passenger chooses not to travel after a cancellation or significant delay.
• Right to compensation. EU flight compensation may be payable for delays, cancellations, or denied boarding, provided no extraordinary circumstances disrupted the flight.
• Right to assistance in case of denied boarding. Rebooking, care, and compensation if boarding is denied involuntarily.
• Right to information. Clear information about passenger rights and disclosure of the operating carrier on the booking.

These rights apply based on the operating carrier, not the airline that sold the ticket. Passengers should always check the “Operated by …” notice on codeshare bookings.

When EU261 Does Not Apply to Codeshare Flights?

There is an important exception where EU261 may not apply to a codeshare flight, even if it was sold by a European airline.

If the flight was operated by a non-EU airline and departed from a country outside the EU, EU261 generally does not apply.

In this situation, responsibility is based on the operating airline, not the marketing airline, and the fact that the ticket was sold by an EU carrier does not extend EU261 protections. In short, when a non-European airline operates a flight departing from outside Europe, EU261 usually does not cover delays or cancellations on that flight.

Read more: Does Regulation EU261 Apply to Non-EU Airlines

Codeshare and Connecting Flights

It is common for connecting flights to involve more than one airline, particularly when codeshare agreements are in place. When you book a connecting journey through an airline’s website — especially with a traditional or network airline — one or more segments of your trip may be operated by a partner airline. In some cases, the entire journey may even be operated by a different airline than the one you booked with.

Codeshare arrangements usually ensure that connecting flights are issued on a single ticket. This is important because it means that if something goes wrong — such as a delay, missed connection, or cancellation caused by an operational issue — the airlines are responsible for arranging the best available alternative to get you to your final destination. If there are difficulties related to a codeshare connection, it is generally best to contact the airline that issued the ticket (the marketing airline).

If you miss a connection due to a delay or cancellation within the same booking, you are entitled to re-routing on a new flight at no additional cost. While waiting, you may also have the right to care, including meals, refreshments, and accommodation if necessary.

If you believe you are entitled to flight compensation because of a disruption, your claim should usually be made to the airline that operated the affected flight.

EU261 apply to codeshare flights, but EU air passenger rights usually depend on the operating carrier, meaning the airline that actually flew the aircraft.

Featured photo by Negative Space from Pexels