Flight delay compensation in the UK: what you're owed and how to claim it

Airlines count on you giving up. Most people do. Here's what changes when you don't.

You're entitled to up to £520 per passenger in flight delay compensation under UK law — and most delayed passengers never see a penny of it. Not because they don't have a valid claim. Because airlines count on the process being confusing enough that you give up before it gets serious.

The moment the board goes blank

It's 11pm at Gatwick. The departure board has been showing “Delayed” for four hours. No reason given. The airline's app says “technical issue.” You've called three times and been on hold. Your connecting flight is gone. Your hotel booking is non-refundable. You're sharing a vending machine sandwich with a stranger.

When you finally land, you do what most people do: you go to the airline's website, fill in the disruption form, and wait. Six weeks later, an automated reply arrives: “The delay was due to extraordinary circumstances beyond our control. We are therefore unable to offer compensation.”

You've just been fobbed off. That reply is not the end of the road. For most people, it's the beginning — or rather, the point where they stop. Don't stop.

What UK261 actually says about flight delay compensation

UK261 — formally the Retained EU Regulation 261/2004, incorporated into UK domestic law by the European Union (Withdrawal) Act 2018 — gives you statutory rights when your flight arrives late. This is not a goodwill gesture from the airline. It is the law, enforceable in UK courts.

Qualifying delays

You have a valid UK261 claim if:

• Your flight departed from a UK airport, or you flew into the UK on a UK-based carrier
• Your flight arrived at its destination 3 or more hours late (gate arrival time — not departure time)
• The delay was not caused by genuine extraordinary circumstances

Note: an airline can depart two hours late and still avoid a claim if it makes up time in the air. What matters is when the doors open at the destination gate.

Compensation tiers by distance

Compensation is fixed by route distance — not by fare paid or class of travel:

These amounts apply per passenger. A family of four on a long-haul flight delayed by 3+ hours could be entitled to £2,080 in total.

The “extraordinary circumstances” defence — and how airlines abuse it

UK261 lets airlines escape liability when delays are caused by “extraordinary circumstances which could not have been avoided even if all reasonable measures had been taken.” Genuine examples: severe storms, a lightning strike to the aircraft, an air traffic control strike.

What it does not cover:

• Technical faults arising from routine aircraft maintenance or ageing fleet
• Staff shortages or scheduling errors
• A late inbound aircraft caused by the airline's own operational decisions
• Birds strikes — typically classed as foreseeable and manageable

Airlines routinely cite vague “technical issues” to avoid paying. Courts and the Civil Aviation Authority (CAA) have repeatedly ruled against them. Published CAA guidance is clear: technical faults from the airline's own operations don't qualify as extraordinary circumstances, unless they involve manufacturing defects that could not reasonably have been anticipated.

Time limits — by jurisdiction

Flights from summer 2020 onwards may still be claimable today. Don't assume you've missed the window.

What most people do wrong

The airline's online claims portal is designed to make you feel like you're in a process. You're not. You're in a system engineered to filter you out.

What a formal UK261 letter changes

A formal dispute letter is not a complaint. It has legal weight. It changes who at the airline reads it — and what they can do about it.

A properly drafted letter will:

• Cite the specific regulation — “Under UK Regulation 261/2004 (Retained EU Regulation 261/2004 as applied under the European Union (Withdrawal) Act 2018), Article 7(1)...”
• State the exact compensation tier applicable to your route under Article 7
• Reference duty of care obligations under Articles 8 and 9 — meals, refreshments, accommodation, and rerouting while you waited
• Pre-empt the extraordinary circumstances defence by requiring documented, specific evidence — not a boilerplate response
• Set a formal 14-day response deadline for payment or substantive reply
• Name the escalation paths: the Civil Aviation Authority (CAA), CEDR Aviation, and AviationADR — both government-approved Alternative Dispute Resolution schemes with binding decision powers over airlines

The moment an airline receives a letter citing the regulation by name and referencing ADR escalation, the claim moves from customer services to the legal or regulatory team. These are different people with a very different risk calculation. Airlines pay millions in ADR awards each year — they know the exposure a formal letter creates.

Evidence to gather before you write

You don't need a thick file. Pull together the following:

You don't need all of these to have a valid claim. A boarding pass, booking reference, and FlightAware screenshot is enough to start. The letter does the rest.

How to claim flight delay compensation in the UK: step by step