Flight Delay Compensation: How to Calculate What You're Owed Under EU261/UK261

A delayed flight feels like pure loss — missed connections, wasted hours, plans in tatters. What many passengers do not realize is that, under European rules, a long delay or a cancellation can entitle you to a fixed cash payout that has nothing to do with the price of your ticket. The EU261 regulation (and its post-Brexit twin, UK261) sets out clear amounts based on how far you were flying and how late you arrived. The catch is that the rules also hinge on why the flight was disrupted. This guide explains how the compensation is calculated, walks through a worked example, and shows you how to check your entitlement before filing a claim.

What EU261/UK261 Compensation Is and Why It Matters

EU261 is a European Union regulation that grants air passengers fixed compensation when flights are delayed by three or more hours on arrival, cancelled at short notice, or overbooked so that you are denied boarding. UK261 mirrors it for flights touching the United Kingdom after Brexit. The amounts are standardized and stated in euros (or pounds), independent of what you paid for the seat.

It matters because the sums are far from trivial — up to €600 per passenger — and because airlines rarely volunteer the payment. The compensation is meant to acknowledge the real disruption a long delay causes and to give carriers a financial incentive to run reliable schedules. Crucially, it covers flights departing from an EU/UK airport on any airline, and flights arriving into the EU/UK on an EU/UK carrier, so a huge share of journeys qualify.

The single most important nuance is the reason for the disruption. Compensation is owed when the delay was within the airline's control — staffing, technical faults, operational decisions. When it was caused by "extraordinary circumstances" outside the airline's control, such as severe weather or air traffic control strikes, the fixed compensation does not apply.

How the Compensation Is Calculated

The payout depends on two main factors: the distance of the flight and whether the delay reached the three-hour threshold, with the reason for the delay acting as a gate on whether you are paid at all.

In plain language, the calculation works like this:

• If the arrival delay is under three hours, no fixed compensation is owed.
• If the delay is three hours or more, a base amount is set by distance: shorter flights (up to 1,500 km) attract €250, medium flights (1,500–3,500 km) attract €400, and longer flights (over 3,500 km) attract €600.
• The reason then determines the share paid: an airline-controlled cause means the full amount, while certain circumstances reduce or eliminate it.

• Delay on arrival: 4 hours
• Flight distance: 2,000 km
• Reason: airline-controlled (a technical/staffing issue)

1. Delay check: 4 hours is at or above the 3-hour threshold, so compensation applies.

2. Distance band: 2,000 km falls in the 1,500–3,500 km bracket, giving a base of €400.

3. Reason factor: an airline-controlled cause pays the full amount, so €400 × 1 = €400.

You would be entitled to €400. Had the same delay been caused by circumstances outside the airline's control, the payout would be reduced or zero. Check your own flight with the Flight Delay Compensation calculator by entering the delay length, route distance, and the reason for the disruption.

The example shows the two hard edges of the rule: the three-hour cliff (2 hours 59 minutes pays nothing) and the reason gate (the same delay can be worth full compensation or none depending on the cause).

Using the Estimate to File a Claim

Knowing your likely entitlement turns a frustrating delay into an actionable claim.

Gather evidence first. Save your boarding pass, booking confirmation, and any airline notifications about the delay or its cause. The actual arrival time — when the aircraft doors opened, not the scheduled time — is what counts toward the three-hour threshold.

Confirm the route qualifies. The flight must depart the EU/UK, or arrive into the EU/UK on an EU/UK carrier. A long-haul flight on a non-EU airline landing outside the EU generally falls outside the rules.

Claim directly first. File with the airline before paying a claims agency a cut. Many airlines pay valid claims without a fight once you cite the regulation and your figures.

Challenge a weak "extraordinary circumstances" excuse. Airlines sometimes label routine technical faults as extraordinary to dodge payment. Established case law treats most technical problems as within the airline's control, so a flat refusal is worth disputing.

Common Mistakes and How to Avoid Them

Confusing delay with ticket price. Compensation is fixed by distance and delay, not by what you paid. A cheap ticket on a long-delayed long-haul flight can still be worth €600.

Measuring the wrong delay. The three-hour test uses arrival delay, not departure delay. A flight that leaves four hours late but makes up time in the air may not qualify.

Assuming weather always cancels the claim. Only genuinely extraordinary, airline-uncontrollable causes remove the payout. A vague "operational reasons" or a routine mechanical fault usually does not.

Missing the claim window. Each country sets a time limit for filing — often a few years, but it varies. Do not sit on a valid claim indefinitely.

Forgetting it is per passenger. The amount applies to each eligible traveler on the booking, so a family's total claim can be several times the headline figure.

Conclusion

EU261 and UK261 give air passengers a rare thing: a clear, fixed entitlement when an airline lets them down. The math is refreshingly simple — pass the three-hour arrival-delay threshold, find your distance band, and confirm the cause was within the airline's control. Estimate your entitlement before you file, gather the evidence the airline will ask for, and claim directly rather than surrendering a slice to an agency. Most importantly, do not take a quick "extraordinary circumstances" brush-off at face value. With the numbers in hand, a long delay stops being only an inconvenience and becomes a claim worth pursuing.

Key Takeaways

• Two factors set the amount: A delay of three hours or more triggers a fixed payout of €250, €400, or €600 based on flight distance — not on what you paid

• The reason gates the payout: Airline-controlled causes pay in full, while genuine extraordinary circumstances like severe weather can reduce or remove it

• Check before you claim: Use the Flight Delay Compensation calculator with your delay, distance, and reason to confirm entitlement, then file directly with the airline

• Mind the details: Use arrival delay (not departure), confirm the route qualifies, claim per passenger, and dispute weak extraordinary-circumstances excuses