A late plane does not automatically pay you. That shock usually lands at the carousel, not at the gate.

U.S. delay rules and EU delay rules are different machines. One is mostly about refunding a ticket you did not use. The other can pay a set amount even if you still arrived, just hours late. Mixing those tracks is how a claim dies in a portal.

Which system applies to your boarding pass?

It depends on where you took off, who operated the aircraft, and whether you still sat in the seat.

What actually controls a delayed-flight claim

People use "compensation" for three outcomes that do not mean the same thing. A snack voucher is not a fare refund. A fare refund is not extra cash for landing late.

For U.S. tickets, start with DOT refund guidance. If Regulation 261/2004 covers the flight, start with EU air passenger rights. Your card issuer is a third path, and it only moves the charge on that card.

Airline customer-service promises still matter in the U.S. for meals and sometimes a hotel. Those are not a federal penalty schedule.

U.S. passengers: refunds, not a delay bonus

A domestic delay on a U.S. carrier usually means rebooking or a refund, not a fixed bonus check.

The Department of Transportation finalized a refund rule in 2024 for cancellations and significant changes. Airlines generally must automatically refund the fare, plus certain unused extras, when they cancel or significantly change the trip and you choose not to travel. A long delay can count as that kind of change. The hour cutoffs sit in the rule text, not in a gate announcement. Read DOT's 2024 refund rule materials before you argue minutes.

If you still flew the delayed flight, extra cash is usually not a U.S. right. That's the part forums blur.

Ask for the refund on the original payment method. A voucher is a substitute you can refuse when a refund is already required.

The largest U.S. airlines have already told DOT they will provide meals and, in most cases, a hotel when the airline caused the delay. Use those promises at the airport desk. It still is not extra delay cash.

When EU261 actually applies

This block is for flights that left the EU, or arrived in the EU on an EU carrier. UK rules look similar on paper. They are not DOT rules.

Turns out plenty of U.S. travelers only hear about this after a transatlantic scramble, when someone in the next row mentions a set payment for arriving three hours late even though everyone still got there, and then the airline portal asks for a booking code you already used.

The trigger is delay at the final destination, not the wait at the gate. Extraordinary circumstances are the airline's favorite shield: bad weather, some security events, certain air-traffic disruptions. A mechanical story or a staffing gap is not automatically extraordinary because a website said "force majeure."

I won't pretend every fight is winnable. Some weather really did stop the plane.

Your Europe publishes the distance bands. In outline they look like this:

The airline can reduce those amounts if it reroutes you and the leftover delay is smaller. Meals, communication, and overnight hotels sit in a different bucket from the cash. File with the airline first. If it stalls, use the national enforcement body in the country of departure or where the airline is based.

Evidence worth keeping

You need a timeline, not a speech.

Pull the booking code, the e-ticket, and the boarding pass, and screenshot the delay in the app and on the board. Keep meal and hotel receipts if you paid, save the emails, and write down scheduled arrival versus actual arrival at the last airport.

It's the landing time that matters for EU261. A U.S. refund file cares whether you declined a substitute flight, or never got one you could use.

If they blamed weather, jot what the agent actually said. You are logging their reason. You are not building a forecast.

How to file, then escalate

Work in this order. A regulator is not your first inbox.

1. Write the airline. Include flight number, date, route, booking code, arrival delay, and the remedy you want: refund to the original payment method, or the EU261 amount if that law applies.
2. Attach the proof. Keep a copy.
3. Wait for a real answer. U.S. carriers are uneven. Follow up once, in writing.
4. If they push a voucher, repeat the refund or the set amount that actually fits the flight. Stay specific. Stay calm.
5. If they deny you or go silent, switch to the matching agency. Use DOT's air consumer process for U.S. problems. Use an EU national body for EU261. Don't send DOT a request for €600.

Deadlines are not universal

There is no single global clock for every delayed-flight claim. File with the airline promptly, then use the deadline that belongs to that system, your card agreement, or the country enforcing EU261.

Credit card disputes when the fare never returns

You paid by credit card, you never used the ticket, and the airline still has the fare. That is a billing dispute with the issuer, not a DOT cash award.

Thing is, the bank can only unwind its own charge. Call the number on the card and ask about services not provided, then send the delay proof and the airline's refusal or silence. Your card agreement sets the deadline, so don't wait around for another status email.

If the issuer's process itself falls apart, use the CFPB complaint portal. That portal is for the financial company. It is not an airline court.

A dispute will not create EU261 cash on a flight you already took.

If the airline still refuses

Read the letter. "Operational reasons" is not an analysis. For a U.S. refund, the questions are whether a significant change triggered DOT's refund rule and whether you still traveled. For EU261, the questions are the arrival delay, the distance band, and extraordinary circumstances.

To be honest, the first "no" is often a filter, a copied paragraph, the same weather sentence they send everyone even when the delay notice blamed crew, and you'll get farther by answering that paragraph with times and the rule you are citing than by writing a novel about your ruined Tuesday.

Stay in one jurisdiction. Small-claims court is a last local option if the amount is worth the filing and your folder is complete. Websites that chase airlines will take a cut. They are optional. A standard refund or EU261 form doesn't require counsel. It requires the right agency and proof of the clock.

Write down scheduled versus actual arrival today. Send that, with the ticket receipt, to the airline in writing before you argue with anyone else.