Missed a connection? It comes down to one booking or two

The UK text now says this out loud

Article 3(1A) was inserted into the UK regulation by the Aviation (Consumers) (Amendment) Regulations 2023. It provides that a flight comprised of more than one leg is treated as a whole where it was booked as a single unit, and as departing from the point of departure of the first leg.

That second half is easy to skim past and it decides coverage. If your journey is Edinburgh to Singapore via Heathrow on one booking, the departure point for the whole journey is Edinburgh — a UK airport — so the UK regulation applies to the journey rather than only to the domestic hop. The long-haul leg does not get assessed as a separate flight leaving from somewhere the rules reach differently.

How the amount is measured

The CAA states it plainly: where a booking includes two or more flights, care and compensation are based on the distance between the first and the last airport in the booking. Not the leg that went wrong, and not the two legs added together.

This usually works in the passenger's favour. A twenty-minute regional hop that makes you miss an intercontinental connection is not assessed as a twenty-minute hop; the distance is measured all the way to the final destination, which can put the journey in a band well above the one the disrupted leg would have earned on its own — over 3,500 km in the long-haul case.

The trigger is arriving at your final destination three hours or more late. The CAA adds a point worth keeping in mind: a late arrival at the connecting airport does not count on its own. Miss the connection, get put on the next flight, and land ninety minutes behind schedule, and nothing is payable however unpleasant the intervening hours were.

UK261 sets its own figures in sterling, so UK sterling amounts are set separately from the euro bands and the two regimes are not interchangeable. Clairo's checker currently shows euro estimates only — check current UK CAA guidance for the sterling figures that apply.

Clairo caps its estimate at €400 when both ends of the route are EU/EEA/UK airports, mirroring the intra-Community cap in Article 7(1)(b); it only estimates €600 where one end lies outside that area. Long UK–EU routes sit at the edge of that cap, so treat the figure as an estimate and check the position for your route.

Self-transfer: the gap in the protection

The CAA is direct about journeys made of two or more separate bookings. Where delays mean you miss a flight in a journey you stitched together yourself, there is no statutory right to care, to compensation, or to transport onward to your last destination. What survives is the entitlement attached to each individual flight, judged on its own.

So the delayed first flight may well carry its own claim, measured on its own distance and its own arrival delay. It just will not carry the cost of the seat you lost on the second booking. Some booking platforms sell their own connection guarantee to cover exactly this gap; that is a commercial product, not a right under the regulation, and its terms are the platform's own.

The EU side, where the connection is on that regime

The European Commission's Your Europe guidance covers the same ground for flights on the EU regime, and adds detail the UK pages do not spell out:

• • Miss a connection within the EU, or on a journey originating in an EU country, and arrive more than three hours late at the final destination, and compensation is in scope. Whether the carrier operating the connecting flight is an EU airline does not change that.
• • Travelling from a non-EU country into the EU with legs operated by a mix of non-EU and EU airlines, only the EU-operated flights are taken into account for the compensation right.
• • Being refused boarding on the connection because the airline judged your delayed first flight would get you there too late is treated as denied boarding, and compensation is due. See the denied boarding guide.

When it was not the airline's doing

Two exclusions are stated on the official pages and both are common. Your Europe says the compensation right does not arise where you missed the connection because of delays at security checks, or where you did not respect the boarding time at the transfer airport. The CAA's page on missed flights takes the same line about queues at the airport: it says it is unlikely an airline would pay compensation or consider itself obliged to offer a free alternative, while noting that some help passengers rebook voluntarily.

That is worth reading before you send anything, because a claim that describes a security queue is a claim you have argued against yourself in the first paragraph. Travel insurance is the route the CAA points to there.

What to keep

• • The booking confirmation showing both legs on one reservation reference.
• • The scheduled and actual arrival times of the first leg.
• • Whatever the airline sent you about the disruption.
• • The boarding pass for the flight you were re-booked onto.
• • The actual arrival time at your final destination — the number the claim turns on.

Then read the UK261 guide for the claim and escalation route, and the time limits before it ages.

What the checker does with a connection

Clairo's checker quotes euro estimates and applies an intra-Community-style cap that treats UK airports as inside that area. The UK text of Article 7(1) does not use that wording, so on a long UK–EU route the estimate and the legislation can point at different bands. Treat the checker as a screening step, read the article for yourself, and check the sterling figure the CAA publishes for your route.

Give it your first departure airport and your final destination, and the arrival delay measured at that final destination — that mirrors how the CAA measures a connecting booking. It is an estimate for the journey, not an assessment of the booking structure, so confirm for yourself that both legs were on one reservation.

Primary sources

• UK261 Article 3 — scope, multi-leg flights and limitationlegislation.gov.uk

  Which flights the UK regulation covers, how a journey booked as a single unit is treated, and the limitation provision.

• The Aviation (Consumers) (Amendment) Regulations 2023legislation.gov.uk

  The 2023 instrument that added the multi-leg, delay-compensation and limitation paragraphs to the UK text.

• Your rights when a flight is delayedUK Civil Aviation Authority

  Care thresholds, the sterling compensation figures and how connecting bookings are measured.

• Missing a flight at the airportUK Civil Aviation Authority

  The regulator's position on flights missed because of queues at the airport rather than a disrupted inbound flight.

• Air passenger rights on Your EuropeEuropean Commission

  The Commission's plain-language explanation of the EU regime, including connecting flights and denied boarding.

• Regulation (EC) No 261/2004 on EUR-LexEUR-Lex

  The EU version, which still states its amounts in euro and keeps the intra-Community wording in Article 7(1)(b).