A long delay on a 2026 flight does not have one universal payout. The route, the carrier that operated the plane, and what you accepted afterward usually determine which rule matters.

A U.S. domestic delay usually creates a refund question, not automatic cash compensation for arriving late. EU261 and UK261 can provide fixed payments on some routes, while the Montreal Convention focuses on proven financial loss.

Find the departure airport and the operating carrier first. Then choose the remedy: a refund, expense reimbursement, care, rerouting, or fixed compensation.

Identify the route before filing

Check the scheduled departure airport and the airline that actually flew the plane. A U.S. booking site, ticket seller, or codeshare does not choose the legal regime by itself.

Turns out, the name on your receipt may not be the operating airline. Look for operated by on the itinerary and save that detail with the rest of your claim documents.

U.S. flights: a refund is not delay compensation

A late arrival alone generally does not trigger U.S. federal cash compensation. The DOT's final refund rule deals with refunds after an airline cancellation or significant change.

If you decline replacement transportation, a travel credit, or another offered benefit, a covered cancellation or significant change can make a refund due. The cause is not always decisive. Weather or air traffic control problems can still be followed by a refund when the change qualifies and you reject the replacement.

For a delay-based change, the usual DOT thresholds are:

These numbers answer a refund question. They do not price the inconvenience.

The arrival delay is only one route to a refund. A different airport, an added connection, or a class downgrade may also count as a significant change.

Once the refund is due, it generally goes back to the original form of payment. The final rule generally gives an airline seven business days for a credit-card purchase and 20 calendar days for another payment method. The refund can include the ticket price and paid optional services the airline did not provide.

Thing is, accepting a new itinerary or travel credit can change the result. Read the offer before accepting it if a DOT refund is still on your mind.

Meals, hotels, and rebooking in the United States

No general federal rule requires every U.S. airline to provide meals or a hotel for every delay. The airline's contract of carriage and its customer-service commitments matter here.

The DOT Airline Customer Service Dashboard lists promises made by major carriers about meals, hotel rooms, free rebooking, and ground transportation during controllable disruptions. Those promises are separate from the federal refund rule.

Ask for a voucher before spending your own money. If the airline refuses or cannot provide help, keep receipts for reasonable food, lodging, and transportation. Luxury lodging, alcohol, and unrelated sightseeing costs are much harder to support.

EU261 and UK261 can provide fixed compensation

EU261 uses a different clock and a different remedy. If you reach your final destination at least three hours late, fixed compensation may be due unless the airline proves extraordinary circumstances. The Your Europe air passenger rights page sets out the main EU rules.

The departure point and operating carrier decide whether EU261 applies. For a missed connection, a single booking usually matters because the delay is measured at the final destination. Separate tickets are generally assessed flight by flight.

EU261 compensation amounts

Distance sets the standard payment, not the ticket price.

A late departure alone is not enough for the usual delay payment. The final arrival time controls.

Rerouting can reduce the payment by 50 percent in certain cases if the replacement flight arrives within the permitted time range.

UK261 is separate, although its structure is similar. Its standard distance-band payments are GBP 220, GBP 350, or GBP 520. Use the regime that covers the trip; do not copy a euro amount into a UK claim.

Care, rerouting, and the five-hour choice

Fixed compensation is only one part of EU and UK passenger rights. On a covered journey, the airline may also have to provide meals, refreshments, communication, and, where needed, overnight accommodation.

The departure delay controls care. The final arrival controls compensation.

If the delay runs overnight, the airline generally must provide a hotel and transportation between the airport and hotel when the care rules apply. Ask before paying for the room yourself.

At five hours or more, you can choose reimbursement instead of continuing the journey. You normally cannot take a full refund, complete the same trip, and treat both outcomes as automatic rights.

Extraordinary circumstances can defeat fixed compensation

An airline can avoid EU261 or UK261 delay compensation if it proves that an extraordinary circumstance caused the delay and could not reasonably have been avoided.

Severe weather, air traffic management restrictions, security risks, and some external strikes may fit that description. Routine technical problems, ordinary maintenance, weak crew planning, or the airline's own staffing failure do not automatically qualify.

Ask the airline to identify the actual cause. A message saying only "operational reasons" leaves too much unanswered.

Keep the delay notice and compare it with what happened at the airport. If the airline says weather, save the weather explanation alongside any separate notice about an aircraft or crew problem.

The Montreal Convention covers proven international losses

Montreal is not a flat-delay-payment rule. For qualifying international carriage, it can cover actual financial damage caused by delay, including situations where EU261 or UK261 does not provide a fixed payment.

You need evidence of the loss. A reasonable hotel, meal, or ground-transport bill is easier to assess than a general request for money for frustration or lost time. The carrier may avoid liability in some circumstances by showing that it took all reasonably required measures or that those measures were impossible.

The passenger-delay limit is expressed in Special Drawing Rights, or SDRs, and reviewed periodically. Its value changes with currency rates. It is a liability cap, not an automatic payout.

Court action under the convention generally has a two-year limit. Baggage delay is a separate claim, so report the bag promptly and keep the baggage report number, receipts, and delivery records.

What to do when the delay starts

A delay creates paperwork quickly. Start saving it with the first announcement.

1. Save the itinerary, boarding pass, delay notices, gate-screen photos, airline messages, and rebooking offers.
2. Ask the gate agent or airline representative for the stated cause. Write down the time and exact wording.
3. Before accepting a credit or new itinerary, decide whether you are pursuing a refund or continuing the journey.
4. Ask for meals, lodging, rebooking, or other care before paying for them yourself.
5. If you must spend money, choose a reasonable option and keep the itemized receipt.
6. Record the actual arrival time at your final destination and save the last boarding pass.
7. Send the claim to the appropriate party, separating any refund request, expense reimbursement, and fixed-compensation request.

Do not rely on memory. Airport conversations blur together, especially after an overnight delay.

How to file and escalate a claim

Start with the operating carrier for EU261 or UK261 care and compensation. If a travel agency issued the ticket, include it when appropriate, but do not let the booking site become your only contact with the airline.

A clean claim is easier to assess. To be honest, put the flight number, date, booking reference, scheduled and actual arrival times, rule relied on, amount requested, and receipts in one submission.

Ask for each remedy separately. Say whether you want a DOT refund, reimbursement for reasonable expenses, EU261 or UK261 compensation, or damages under the Montreal Convention.

A regulator complaint can help identify a rule violation, but it does not turn every delay into a personal compensation award. Keep copies of everything.

Questions that change the result

Does a four-hour delay guarantee money on a U.S. flight?

No. A four-hour domestic delay may cross the DOT's three-hour significant-change threshold. A refund generally still depends on declining the alternative transportation, credit, or other offered benefit, and it is not payment for inconvenience.

Does bad weather end every claim?

No. Weather often defeats fixed EU261 or UK261 compensation, but care and rerouting rights may remain. A U.S. refund can still be due after a covered cancellation or significant change.

Can I claim after accepting a voucher?

Possibly, but read the terms first. Accepting a replacement flight or travel credit can change or end the path to a DOT ticket refund.

Does a booking site decide who pays?

Not by itself. The operating carrier is central to flight-delay rights, especially under EU261 and UK261. The seller may still handle the transaction, so keep both parties informed.

Open your itinerary and write down the operating carrier, departure airport, scheduled arrival, and actual final arrival. Those details point you toward a DOT refund, an EU or UK261 claim, or a documented Montreal expense claim.