Airline delay compensation depends on more than how late a flight leaves. The route, operating airline, arrival delay, reason for the disruption and passenger-rights rules that apply can all affect eligibility. Before filing, work out which rules cover your trip and whether you are seeking fixed compensation, a refund, reimbursement for expenses or assistance while waiting; these are separate claims. Save your booking confirmation and the airline’s messages, then ask the airline to explain the cause of the delay. If the flight does qualify, a clear record of the itinerary and disruption will make your claim easier to assess.
The phrase “airline delay compensation” is often used for several different remedies. A payment for a qualifying delay is not the same as a refund for a flight you did not take, or repayment for meals and accommodation bought during a disruption. Identify what you are claiming before you contact the airline.
A passenger can have a valid request for one type of remedy without qualifying for another. For example, a delay might not meet the conditions for fixed compensation but could still raise a separate issue about assistance or a refund after a qualifying schedule change.
There is no single worldwide system for airline delay compensation. A flight’s departure point, destination and operating carrier can matter more than where you live or where you bought the ticket. A codeshare can also make the airline that operated the flight more relevant than the company whose code appears on your booking.

| Rules to investigate | General starting point | What to verify |
|---|---|---|
| European Union passenger rights | Generally cover flights departing from an EU airport, and some flights arriving in the EU from outside it. | Check the operating carrier, route, final-destination delay, cause and any applicable exception. |
| United Kingdom passenger rights | Generally cover departures from the UK and certain inbound flights. | Check the route and operating carrier against current UK Civil Aviation Authority guidance. |
| United States rules and airline commitments | There is no general federal requirement for airlines to pay cash compensation for an ordinary flight delay. | Review the airline’s commitments and distinguish a delay claim from a refund request after a cancellation or qualifying significant change. |
| Other national or regional rules | Rights vary by jurisdiction; an international convention or local passenger law may also be relevant. | Identify the rules for the route and check the claim process and deadline with the relevant authority. |
EU and UK passenger-rights frameworks can provide fixed compensation for an eligible long delay at the final destination, commonly when arrival is at least three hours late, subject to conditions and exceptions. The amount, where payable, depends on the rules that apply and factors such as journey distance. Do not assume that a flight described as “European” is covered by EU rules: Europe includes countries outside the EU, and the UK has a separate framework.
For a US itinerary, start with the airline’s contract of carriage and customer-service commitments, then check the U.S. Department of Transportation’s current passenger guidance if the flight was cancelled or substantially changed. For a route involving other countries, identify the applicable national rules rather than relying on a general online calculator or a claim service’s broad eligibility estimate.
Write down every airport on the itinerary and identify the airline that operated each flight. Then check whether the relevant rules apply to the departure, arrival or both. A ticket sold by one airline but operated by another may be covered according to the operating carrier’s role, so keep the boarding pass and flight details as well as the booking confirmation.
If the trip involved a connection, check whether all flights were on one booking. Under some passenger-rights rules, the delay at the final destination on a single reservation can matter, even if the first flight was only modestly late. Flights booked separately may be treated differently, and a missed onward flight on a separate ticket can leave you with fewer protections. Do not assume the delay on each leg is assessed in isolation or, conversely, that separate bookings will be combined.

Record the scheduled and actual arrival times, not only the departure delay. Some compensation systems focus on the delay at the destination, and the relevant rules may define how arrival time is measured. A late take-off followed by a shorter delay en route may produce a different result from a flight that lands late and waits before passengers can leave.
For a connecting itinerary, use the final destination shown on the booking when the applicable rules assess the journey as one trip. Save any notification of a missed connection, rebooking or reroute. If the airline put you on a different flight, record when you ultimately arrived and whether the new itinerary changed your destination or travel arrangements.
The reason for the delay can determine whether compensation is payable. In some systems, a carrier may not owe fixed compensation when an exceptional circumstance outside its control caused the disruption, although the exact test and the carrier’s obligations vary. Severe weather or air-traffic restrictions may be relevant, but an airline’s brief description is not always enough to establish how the rules apply.
Ask the airline to state the reason in writing and keep the response. A vague label such as “operational issue” does not, by itself, settle whether a claim is valid or exempt. The airline may also need to explain what it did to limit the delay, depending on the applicable rules. Avoid treating a flight-tracking app or a message from another passenger as the final word on cause.
State clearly whether you are seeking fixed compensation, a refund, reimbursement of expenses or a response about care during the delay. If you accepted a replacement flight, that may affect a refund request, but it does not necessarily answer whether a separate compensation claim is available. Likewise, a refund for an unused ticket does not automatically include additional compensation.
For expenses, include receipts and explain why each cost was necessary. Ask the airline what it considers reasonable under the rules governing your trip. If the airline provided a meal voucher or hotel, record that too; it helps show what support you received and what you paid for yourself.
Claim deadlines are not uniform. They can depend on the legal system, the route and the kind of claim, so do not assume that a deadline you read about for another country applies to your flight. File as soon as you have the basic records, and confirm the applicable time limit if the airline has not resolved the matter.
A well-supported claim gives the airline enough information to identify the flight and assess the disruption. Keep copies of documents and messages rather than relying on an app that may later remove them.

Keep the original booking details even if the airline rebooks you. If a connection was involved, retain the full itinerary so the airline can see whether the segments were on one reservation. A concise timeline of what happened can also help: when the delay was announced, what explanation was given, what assistance was offered and when you arrived.
You can also consider a third-party claims company, but compare its fee with the amount you might receive and read its terms before authorising it. Check whether it charges if the claim fails, how it handles a settlement and whether you can still deal with the airline directly. A service cannot make an ineligible claim eligible simply by submitting it for you.

No. Eligibility depends on the rules covering the itinerary, the delay at the relevant destination, the cause and any applicable exceptions. A delay may qualify for care or another remedy even if it does not qualify for fixed compensation.
Possibly. Accepting rerouting does not automatically answer whether fixed compensation is due, but the time you reached your final destination and the rules that apply can matter. Keep the original and replacement itineraries, then make clear which remedy you are requesting.
It depends partly on whether the flights were booked together and which rules govern the journey. A single reservation may be assessed by the delay at the final destination under some systems; separately booked flights may be treated as distinct trips. Provide both flight details and the booking records.
Weather can be a relevant exception under some passenger-rights laws, but the airline’s explanation should be considered alongside the applicable legal test and the circumstances of the flight. Ask for the reason in writing and keep the airline’s response. The result can depend on whether the rules’ conditions are met and what the carrier did to limit the disruption.
Passenger rights and the process for submitting a claim can depend on the applicable law and the passenger’s circumstances. Check who must make or authorise the claim, and include accurate details for each person. Do not assume that one booking reference means a single claim covers every passenger automatically.
There is no single deadline for all delayed flights. The time limit depends on the governing rules and may differ by country and claim type, so confirm it for your itinerary and submit the claim promptly.

Before filing, confirm the route and operating carrier, calculate the delay at the destination relevant to your claim, and separate compensation from refunds and expenses. Then send the airline a concise written request with your booking records and supporting evidence, and keep a copy until the matter is resolved.