Connecting Flights and Missed Connections: Who Pays?

The one factor that determines everything

When a missed connection leaves you stranded at an unfamiliar airport, the first question is always: who is responsible? The answer depends almost entirely on a single factor that most passengers never think about until something goes wrong. Were your flights booked as a single reservation, or as separate, independent bookings?

This distinction is the dividing line between having clear legal protection under EC261 and having almost none at all. The regulation treats these two scenarios completely differently, and airlines know it. Understanding which side you fall on before you travel can save you hours of frustration and potentially hundreds of euros.

Single booking: you are protected

When all your flights are on one reservation, with a single booking reference (PNR), the airline or alliance that sold you the ticket takes responsibility for the entire journey from origin to final destination. If your first flight is delayed and you miss the connection, the airline must rebook you on the next available flight and provide meals and accommodation while you wait.

Crucially, compensation under EC261 is calculated based on your arrival delay at the final destination, not the connecting airport. This means a 90-minute delay on your first leg that causes you to miss a connection, ultimately arriving 5 hours late at your destination, entitles you to full compensation based on that 5-hour delay.

The Court of Justice of the European Union confirmed this principle in the Wegener ruling. The court held that passengers on a single booking who miss connections are entitled to compensation based on the delay at the final destination, even when the connecting flight is operated by a different airline within the same booking. This applies to codeshare arrangements and alliance partner connections alike, provided they are on one reservation.

Separate bookings: you carry the risk

If you booked two independent flights yourself, creating two separate reservations with two different booking references, the situation changes dramatically. Each airline is responsible only for its own flight. If the first flight lands late and you miss the second, the first airline owes you nothing for the missed connection. The second airline has no obligation to rebook you, because from their perspective, you simply did not show up.

This means you would need to buy a new ticket for the onward journey out of your own pocket. You might be able to claim compensation from the first airline for the delay on their flight, but only if that individual flight arrived 3 or more hours late. The knock-on consequences of missing your second flight are entirely your problem.

How to verify your booking type

Not sure whether your flights are on a single booking or separate ones? There are several reliable ways to check before you travel. Getting this right is essential because it determines your rights if anything goes wrong.

If any of the warning signs apply, treat your flights as separate bookings and plan accordingly. Allow extra time at connecting airports, and understand that you bear the financial risk if something goes wrong with the first leg.

Codeshare flights: who do you claim against?

Codeshare flights add another layer of complexity. Your ticket might show a KLM flight number, but the aircraft, crew, and operations belong to Delta. In this scenario, your EC261 claim goes to the operating carrier, not the marketing carrier whose code appears on your ticket.

This distinction matters because the operating carrier is the airline that actually caused (or prevented) the disruption. If you booked a British Airways code on a flight operated by Iberia, and the flight was delayed, your claim is against Iberia. British Airways will simply redirect you, adding weeks to the process if you contact the wrong airline first.

Check your boarding pass or the airport departure board for the "operated by" line. That is the airline you need to claim against.

Practical advice for connecting journeys

The simplest way to protect yourself is to book connections through the airline directly, on a single reservation. When the airline offers you a connection, they are taking responsibility for it. When you build your own itinerary from separate tickets, you are accepting the risk yourself.

If separate bookings are unavoidable, build in generous buffer time. A minimum connection of 3-4 hours gives you a cushion against moderate delays. For international connections requiring passport control and terminal changes, allow even more. And always have a contingency plan: know what flights depart later that day, and understand the cost of rebooking before you commit to a tight schedule.

Connecting flights are a normal part of air travel, and airlines build their entire hub-and-spoke business model around them. When those connections fail because of delays the airline caused, the passenger should not be the one paying the price. If your flights were on a single booking and you arrived at your final destination more than 3 hours late, the law is on your side.