Which deadline applies?
There isn't one deadline for every canceled-flight complaint. The U.S. 24-hour rule is often the wrong clock: it starts when you buy an eligible ticket, not when an airline sends a cancellation notice.
The applicable deadline depends on what happened and what you want:
- A U.S. refund after an airline cancellation or significant change: You generally have a refund right if you reject the rebooking, credit, or other alternative. There is no separate 24-hour complaint window.
- EU261 or UK261 fixed compensation: The notice period affects eligibility, but the time to bring a claim usually comes from the relevant country's limitation rules.
- Baggage compensation under the Montreal Convention: Written notice may be due within 7 or 21 days, and court action generally has a two-year limit.
- A voluntary cancellation: Your fare conditions, ticket seller, and travel insurance are usually more relevant than airline-disruption protections.
Deadlines at a glance
| Situation | Main deadline or timing | What it means |
|---|---|---|
| U.S. 24-hour booking rule | Within 24 hours of purchase | Applies to eligible airline bookings made at least seven days before departure. It is not a deadline for complaining about a later cancellation. |
| U.S. airline cancellation or significant change | Refund generally due within 7 business days for credit-card payments or 20 calendar days for other payment methods | The refund right usually applies when you do not accept the alternative offered by the airline. |
| EU261 or UK261 reimbursement | Generally within seven days after choosing reimbursement | This payment deadline is different from the time limit for seeking fixed compensation. |
| EU261 or UK261 compensation | The applicable national limitation period | The 14-day cancellation-notice rule affects eligibility, not how long you have to file. |
| Montreal Convention baggage claim | Written notice within 7 days for damage or 21 days for delay; two years for court action | These rules apply to baggage claims and are not the general deadlines for a canceled-flight refund. |
| U.S. Department of Transportation complaint | File as soon as possible | A DOT complaint has no short 24-hour filing window, but delay can make the facts harder to prove. |
U.S. flight cancellation refund deadlines
U.S. law generally provides a refund remedy for an airline cancellation or significant change. It does not generally require airlines to pay fixed cash compensation for an ordinary cancellation or delay.
When the airline canceled or significantly changed the flight
Under the Department of Transportation's refund framework, an airline generally must issue an automatic refund when it cancels or significantly changes a flight and the passenger does not accept alternative transportation, a travel credit, or another offered solution.
That is different from voluntarily canceling a nonrefundable ticket. If the airline canceled the service, a nonrefundable fare does not usually prevent a refund for the transportation the airline failed to provide.
The refund normally goes to the original form of payment and can include:
- The unused ticket price
- Taxes and mandatory fees
- Fees for services you paid for but did not receive
A refund does not automatically cover a hotel, rental car, missed event, or other consequential loss. Those expenses may depend on the airline's own disruption policy, travel insurance, or a separate legal claim.
The Federal Register material on airline refunds provides regulatory background. Weather and other events outside the airline's control may affect extra reimbursement or goodwill assistance, but they generally don't remove the right to a refund for a flight the airline canceled.
The refund clock is not the same as the complaint clock. DOT rules generally require payment within:
- Seven business days for a credit-card purchase
- 20 calendar days for other payment methods
A bank or card issuer may take additional time after the airline sends the payment. Ask for the date the airline processed the refund and keep that confirmation.
If an online travel agency sold the ticket, contact the agency as well as the airline. The seller may control the payment transaction even though the airline operated the flight.
The U.S. 24-hour rule is a booking rule
For an eligible reservation made at least seven days before scheduled departure, the airline must generally offer one of these options:
- Hold the reservation and price for 24 hours without payment; or
- Let you cancel within 24 hours of purchase for a full refund.
The airline chooses which option it provides. The period starts when you buy the ticket. It does not restart when the airline later cancels the flight.
The federal requirement generally applies to tickets bought directly from the airline, not tickets purchased through an online travel agency. An agency may provide its own free-cancellation policy, but its terms can be different. Some airlines also offer longer cancellation windows voluntarily; those are company policies, not a universal U.S. deadline.
If the airline refuses or delays the refund
Ask for the refund in writing before escalating. Explain that the airline canceled or significantly changed the itinerary and that you did not accept the replacement flight, voucher, or credit.
If the airline refuses, sends a voucher instead of a refund, or does not pay on time, use the DOT consumer complaint form. Include:
- Your confirmation and ticket numbers
- The original itinerary and cancellation notice
- When you asked for a refund
- The airline's response
- Proof of payment
- Any rebooking or credit offer you rejected
A DOT complaint is an administrative enforcement step, not a lawsuit. It can help the agency identify a possible violation, but it doesn't guarantee an individual payment or extend a separate credit-card dispute deadline. If you paid by card, ask the issuer promptly about its billing-dispute process too.
EU261 and UK261 claim deadlines
EU261 and UK261 can offer more than one remedy after an eligible cancellation:
- Reimbursement of the unused ticket
- Rerouting to the destination
- Care, such as meals, communications, and, when necessary, accommodation
Fixed compensation may also be available, but a cancellation alone doesn't guarantee it.
If you choose reimbursement instead of rerouting, payment is generally due within seven days. That payment deadline should not be confused with the time allowed to bring a fixed-compensation claim.
What the 14-day rule means
The notice date can determine whether fixed compensation is payable:
- More than 14 days before departure: Fixed compensation is generally not due.
- Seven to 14 days before departure: Compensation may be due unless the replacement flight leaves no more than two hours earlier and arrives less than four hours later than the original schedule.
- Less than seven days before departure: Compensation may be due unless the replacement flight leaves no more than one hour earlier and arrives less than two hours later.
The 14-day period is a notice threshold. It is not a requirement to file your claim within 14 days.
An airline can usually avoid fixed compensation if it proves extraordinary circumstances, such as severe weather, air-traffic-control restrictions, or certain security events. Routine technical problems and airline staffing issues don't automatically qualify. Even when extraordinary circumstances defeat fixed compensation, they don't necessarily remove the separate rights to reimbursement, rerouting, or care.
For EU261 flights, the usual fixed amounts are:
- EUR 250 for flights up to 1,500 kilometers
- EUR 400 for flights within the EU over 1,500 kilometers and other flights between 1,500 and 3,500 kilometers
- EUR 600 for flights over 3,500 kilometers outside the EU
UK261 uses pound amounts, commonly GBP 220, GBP 350, or GBP 520, depending on distance and the applicable rerouting rules. Compensation can be reduced when the replacement flight gets you to the destination within the permitted time.
The EU passenger-rights FAQ covers cancellations, delays, extraordinary circumstances, and cross-border questions.
Which flights are covered?
EU261 generally covers flights departing from an airport in the EU, Iceland, Norway, or Switzerland. It can also cover some flights arriving in the EU from outside Europe when an EU carrier operates the flight.
For example, a flight from the United States to France on a U.S. airline usually isn't covered by EU261 merely because it lands in the EU. The same route operated by an EU airline may be covered.
UK261 is a separate regime. It generally covers flights departing from the United Kingdom and certain flights arriving in the UK on a UK carrier. Different parts of one journey can therefore raise different EU261 or UK261 questions.
How long do you have to file?
EU261 doesn't set one court deadline for every country. The applicable national law usually controls, and the relevant starting date and court procedure can vary. Published summaries often describe EU261 periods as roughly two to six years, but that range is too broad to use as your personal deadline.
An airline's online form may also set an internal date for sending receipts or making a customer-service request. That date may affect how the airline processes the submission; it isn't necessarily the same as the court limitation period.
In the UK:
- Six years is commonly used for contract claims in England, Wales, and Northern Ireland.
- Scotland has different prescription rules, so don't assume the six-year period applies there.
- The UK Civil Aviation Authority's complaint guidance warns passengers who are nearing the six-year limit that legal action may be necessary.
Writing to the airline doesn't automatically pause or extend a court deadline. If the limitation period is close, don't wait indefinitely for a customer-service response.
Where to escalate an EU or UK claim
Write to the airline first and save proof of the submission. If it rejects the claim or doesn't respond, use the national enforcement body identified in the EU passenger-rights guidance. For a cross-border dispute, the European Consumer Centres Network may offer information or assistance.
A regulator can help enforce passenger-rights rules but may not recover your individual compensation. A court claim may still be necessary, and its deadline can keep running while a complaint is investigated.
For UK complaints, complain to the airline first. If you receive no satisfactory response within eight weeks, the CAA's Passenger Advice and Complaints Team may be able to help with qualifying matters.
Montreal Convention deadlines for baggage
The Montreal Convention is a separate system for international carriage. It can cover proven financial losses caused by passenger or baggage delay, loss, or damage.
It doesn't provide EU261 or UK261-style fixed compensation simply because a flight was canceled. Its two-year court period also isn't the general deadline for every cancellation complaint.
The short written-notice rules apply to baggage:
- Report baggage damage in writing within seven days after receiving the baggage.
- Report baggage delay in writing within 21 days after the baggage is made available.
- Keep the airport's Property Irregularity Report, or PIR, but send a separate written claim when required.
- Court action generally must be brought within two years.
Treaty liability limits and other conditions may apply. A PIR is useful evidence, but don't assume that completing it at the airport satisfies every later written-claim requirement.
What airline policies mean for Ryanair, easyJet, and others
Ryanair, easyJet, Lufthansa, British Airways, Air France, Delta, and Southwest don't have one cancellation-claim deadline that applies to every route and passenger. The controlling rule usually depends on:
- Where the flight departed and arrived
- Which airline operated it
- Whether the airline or passenger canceled
- Whether U.S. DOT rules, EU261, UK261, or the Montreal Convention applies
- Whether you want a refund, fixed compensation, expense reimbursement, or baggage payment
| Airline or group | What to check |
|---|---|
| Ryanair and easyJet | EU261 or UK261 coverage for the route and the applicable national limitation period. A wallet-credit processing period isn't automatically a compensation-claim deadline. |
| Lufthansa and Air France | EU261 eligibility based on the departure airport, destination, and operating carrier, along with the applicable national court deadline. |
| British Airways | UK261 or EU261 coverage based on the route and operating carrier. Six years is common in England and Wales, but jurisdiction matters. |
| Delta, Southwest, and other U.S. carriers | U.S. DOT refund rules for cancellations or significant changes. Voluntary reimbursement and expense programs may have their own terms. |
An airline portal may set a date for submitting receipts or requesting a voluntary payment. Submit before that date when possible, but don't assume the portal's deadline is the legal limitation period. If the portal rejects a claim that you believe is timely, send the request in writing and ask for manual review.
A wallet credit, voucher, and travel credit are different from a refund. If the applicable rule gives you a refund, state clearly that you want the money returned to the original payment method. Don't accept a credit by mistake.
How to file a flight-cancellation complaint
1. Confirm who canceled
Check whether the airline canceled or significantly changed the service, or whether you canceled because the new itinerary no longer worked. Also note whether an online travel agency or tour operator issued the ticket.
That distinction affects both the remedy and the right recipient.
2. Choose the remedy before writing
Say exactly what you're seeking:
- A refund to the original payment method
- Reimbursement for reasonable meals or hotel costs
- EU261 or UK261 fixed compensation
- Payment for lost, delayed, or damaged baggage
- A refund for a paid service the airline didn't provide
For a U.S. refund, say that you rejected the alternative transportation, voucher, or credit. If the airline had already canceled the flight, describe the request as an airline-initiated cancellation, not a voluntary cancellation.
3. Make a short timeline
Record the booking date, scheduled departure, cancellation notice, original and replacement flight numbers, and the date you rejected a rebooking or credit. Add the date you requested a refund or compensation, plus any baggage-report dates.
The timeline keeps separate clocks from getting mixed together: the 24-hour booking period, the EU or UK 14-day notice rule, the refund-processing period, and the court limitation period.
4. Keep the evidence
Save the confirmation email, e-ticket, boarding pass, cancellation message, replacement offer, receipts, airport notices, photographs, and customer-service correspondence. Take a screenshot after submitting an online form.
5. Send the request to the right parties
Send a cancellation-refund request to the airline and, when an agency sold the ticket, to the agency too. Use the official complaint form, email address, or written correspondence, and save the submission receipt.
A concise request could read:
The airline canceled booking [reference] for flight [number] on [date]. I did not accept the offered credit or replacement transportation. I am requesting [refund, expenses, and/or statutory compensation] under the rules applicable to this itinerary. Please confirm receipt and return any refund to the original payment method.
For escalation, U.S. passengers can use the DOT consumer complaint form. EU passengers can follow the national enforcement route in Your Europe's passenger-rights guidance.
What if the complaint deadline has expired?
First identify which deadline passed. It may not be the one you thought:
- An airline portal deadline: Submit the claim in writing anyway and request manual review. The date may relate to processing receipts rather than the legal claim.
- The U.S. 24-hour booking period: This only affects the special cancellation option after purchase. It doesn't normally erase a refund right created by a later airline cancellation.
- An EU or UK limitation period: Don't assume that an airline complaint stops the clock. Check the applicable court procedure promptly.
- The Montreal two-year period: A court claim may be barred, although you can still ask for a goodwill payment and keep proof that you made an earlier claim.
- A DOT complaint deadline: File while the issue remains unresolved, but understand that a DOT complaint doesn't necessarily revive a separate court, insurance, or card-dispute deadline.
If you paid by credit card, contact the card issuer quickly about any billing-dispute option. Issuer and card-network deadlines are separate from airline deadlines and may be shorter.
A claims service may assess an EU or UK compensation case. Before signing, check its fee, contract terms, and whether it asks you to assign the claim. If a court deadline is near, local consumer or legal assistance is more useful than waiting for another airline response.
Frequently asked questions
Does the U.S. 24-hour rule apply after an airline cancels my flight?
No. It applies to eligible ticket purchases and starts when you book. A later cancellation is handled under the separate U.S. refund rules.
Is the EU 14-day rule the deadline for filing compensation?
No. It concerns how much notice the airline gave you and can affect whether fixed compensation is payable. The filing deadline usually comes from national limitation law.
Can I get a U.S. refund if bad weather caused the cancellation?
Generally, yes, if the airline canceled the flight and you didn't accept an alternative. Bad weather can affect additional expenses and usually matters more to EU or UK fixed-compensation eligibility.
Does complaining to the airline stop the deadline?
Don't assume it does. Keep proof of your complaint, but check the applicable court rules and act before the limitation period expires.
Open the cancellation email and record the notice date first. Then write down who canceled the flight and whether you want a refund, fixed compensation, expense reimbursement, or a baggage payment. That choice tells you which clock to check.