Most U.S. passengers can't demand cash because a flight arrived late. The answer depends on the route, the size of the schedule change, the disruption's cause, and what you accepted from the airline. Turns out, a refund, an expense claim, and fixed compensation are different requests. Start with the remedy that matches your trip.

Start with the remedy, not the delay length

Delay length alone doesn't pick the remedy. Each protection has its own trigger.

For a U.S. refund, start with 14 CFR 260.6. EU and international claims use different tests.

U.S. delayed flights: when a refund is due

U.S. law generally does not require a fixed cash payment for an ordinary delay. Refund rules work differently.

A full refund is generally due when the airline cancels the flight or makes a significant change and you do not accept the replacement transportation. The refund covers the airfare, taxes, and covered ancillary fees. It goes to the original form of payment.

The timing test has separate thresholds. A domestic arrival scheduled at least three hours later, or an international arrival scheduled at least six hours later, can qualify as a significant change. Earlier departures can qualify too. So can an airport change, an added connection, or a class downgrade.

The DOT refund rule has the full conditions.

Be careful before accepting a new flight or voucher. Once you accept replacement transportation or credit, the refund analysis can change for that transportation. Check the choice before clicking "accept."

The reason for the delay does not decide the refund question by itself. Weather, air traffic control, maintenance, or crew problems may affect other benefits, but the significant-change test remains central to a DOT refund.

Tarmac delays are a separate U.S. protection

A tarmac delay happens while passengers remain on the aircraft. It isn't the same as arriving late.

For flights covered by DOT passenger-protection rules, the airline generally must give passengers an opportunity to leave the aircraft within three hours on a domestic flight and within four hours on an international flight. Safety, security, and air traffic control exceptions can apply.

Food and water must generally be offered no later than two hours after the tarmac delay begins. The pilot can determine that service would threaten safety or security.

The airline must also keep passengers informed about the delay and the opportunity to deplane. See the DOT passenger-protection rules in Part 259 for the conditions.

A tarmac violation is not an automatic compensation schedule. You can report it to the DOT, but that complaint is separate from a ticket-refund request.

Meals, hotels, and rebooking depend on the airline's commitment

Meals and hotels may come from an airline commitment or a specific passenger-rights rule. They do not come from one universal U.S. compensation law.

Thing is, airlines don't promise the same help. Check the DOT Airline Customer Service Dashboard, then ask the gate agent or support team what applies to your flight.

Before paying for anything, ask whether the delay is classified as controllable, whether the airline will provide a meal, hotel, or ground transportation, and whether rebooking includes another airline or only the original carrier.

Save the answer. A written chat reply or email can help if the airline later denies a promised reimbursement. A receipt alone does not create a right to payment.

EU261 can provide fixed compensation

EU261 is not a worldwide delay rule. It may apply to a flight leaving an EU airport, regardless of the airline, or to a flight arriving in the EU from outside the EU when an EU airline operates it. The United Kingdom uses a separate passenger-rights framework.

If EU261 applies and you reach your final destination at least three hours late, fixed compensation may be available. The airline can avoid that payment if extraordinary circumstances caused the delay.

For connecting flights bought on one reservation, use the final destination when measuring the delay.

Rerouting can reduce the amount by 50 percent in some situations when the replacement itinerary meets the regulation's timing limits. Fixed compensation is separate from documented meal, hotel, or other care expenses.

Weather and air traffic control restrictions may qualify as extraordinary circumstances. The airline's label does not settle the issue by itself. Ask what happened, whether it directly affected the flight, and why the carrier says the event was outside normal operations.

EU passengers may also have rights to meals, refreshments, hotel accommodation, transportation, rerouting, or a refund during a long departure delay. Care thresholds begin at two, three, or four hours, depending on flight distance. Your Europe's air passenger rights guidance includes the route rules and national enforcement contacts.

International delay losses may fall under Montreal

For qualifying international carriage, the Montreal Convention generally concerns financial damage caused by a delay. It does not provide a flat payment just because the aircraft arrived late.

A claim normally needs proof of the loss, a connection between the loss and the delay, and reasonable steps to limit the expense. Keep hotel and meal receipts, replacement transportation costs, proof of a missed paid arrangement, and the airline's delay messages.

A wholly domestic U.S. itinerary is not automatically covered. An international itinerary may also qualify for another passenger-protection rule, but the same loss should not be recovered twice.

Baggage delay is separate. Report it separately to the airline because it has its own notice and liability rules.

Deadlines and court procedures vary by claim type and jurisdiction. Don't wait until the records disappear.

Build the evidence before contacting the airline

Start a folder as soon as the itinerary changes. Save the booking confirmation, e-ticket, boarding passes, delay notices, airline messages, and screenshots of the revised itinerary.

Record the flight number, route, scheduled departure, scheduled final arrival, actual arrival, and whether every segment appeared on one reservation. For an EU claim, focus on arrival at the final destination.

Tarmac complaints need different details. Note when the aircraft door closed, when food or water was offered, and when passengers got a chance to leave.

Keep receipts together. Add a short note explaining why each expense followed the delay. The paperwork can feel fussy, especially when you're saving a hotel invoice at midnight, but that note connects the receipt to the claim.

Ask the airline for its stated reason for the delay in writing. Airport display boards can help establish timing. The carrier's explanation usually matters more when it argues that an exception applies.

A practical claim workflow

1. Identify the controlling rule. Note the departure country, arrival country, operating carrier, flight type, connection details, and whether the trip was booked as one reservation.

2. Decide whether you still want the transportation. If you want a U.S. refund, don't casually accept a voucher or replacement flight. If you plan to continue, ask about rebooking and care first.

3. Separate the money involved. Calculate possible EU261 compensation apart from hotel and meal costs. For a U.S. claim, calculate the fare and covered fees that should be refunded. For a Montreal claim, list only actual losses you can document.

4. Send a written request to the airline. Use its official refund, complaint, or passenger-rights form. Include the booking reference, flight date, route, scheduled and actual times, the remedy requested, and the amount sought.

5. Attach focused evidence. Include the itinerary, boarding passes, delay notice, receipts, and any written promise from the airline. Keep the original files and a copy of the submission.

6. Answer a denial precisely. Ask whether the airline relies on a significant-change decision, an accepted alternative, an extraordinary circumstance, missing proof, or a policy exclusion. Respond to that reason instead of sending the same request again.

7. Escalate when necessary. For a U.S. issue, use the DOT Aviation Consumer Protection complaint system after giving the airline a reasonable chance to respond. For an EU261 issue, use the national enforcement body identified through the Your Europe guidance. An international damages claim may require a court or another jurisdiction-specific process.

There is no single deadline for every delayed-flight claim. Submit promptly, then check the limitation period before pursuing a formal legal claim.

Three examples

A five-hour domestic U.S. delay: The passenger accepts a later flight and reaches the destination that evening. There is no general federal cash payment just for arriving late, although an airline policy could cover food or other assistance.

A four-hour EU arrival delay: A passenger flies 2,000 km on one reservation and reaches the final destination four hours late. If EU261 applies and no extraordinary circumstance defeats the claim, standard compensation may be EUR 400. Meals and other care are separate questions.

An international delay with a hotel bill: A passenger on qualifying international carriage pays for an extra hotel night because of the delay. Under a Montreal claim, the passenger would seek the documented loss and explain its connection to the delay. Recovery is not automatic or a fixed inconvenience payment.

Common mistakes that weaken a claim

Don't call every payment "delay compensation." A refund returns money for transportation you did not accept, EU261 compensation is a fixed statutory amount, and a Montreal claim concerns proven financial damage.

People also mix separate bookings together. A missed connection on one reservation can be treated differently from a later ticket bought from another airline. To be honest, that booking detail can change the entire claim.

A denial of one remedy is not necessarily a denial of all remedies. The carrier might reject EU261 cash while still owing a U.S. refund, a promised hotel reimbursement, or payment for an unused service.

Questions passengers often ask

Does a four-hour U.S. delay guarantee cash?

No. The United States has no general fixed payment for an ordinary delay. Check whether the carrier made a significant change, whether you rejected the alternative, and whether the airline made a separate service commitment.

Can I get a refund after accepting a replacement flight?

The DOT refund rule is designed for passengers who do not accept alternative transportation. Once you accept and use a replacement, the ticket-refund analysis can change. Ask about any unused service or separate fee.

Does bad weather eliminate every possible claim?

No. Weather may defeat fixed EU261 compensation if it qualifies as an extraordinary circumstance. It does not automatically answer a U.S. refund question, a tarmac complaint, an unused-service refund, or an insurance claim.

Can travel insurance or a credit card pay for delay expenses?

Possibly. Those are separate contracts with their own triggers, receipts, waiting periods, and limits. Check the benefit terms instead of treating them as airline compensation.

How long do I have to file?

There is no universal deadline across U.S., EU, and international claims. Submit the airline request promptly, then check the rule for the route and claim type if the airline denies it.

Rules and deadlines can depend on the route, carrier, booking, and payment method. This is general consumer information, not legal advice.

Open the booking now. Write down the scheduled final arrival, actual final arrival, airline's stated reason, and every expense. Then send the narrowest written claim those facts support.