There's no single answer to "how long can a flight be delayed" — but the law is clear about when you're owed money. Whether your flight is stuck on the tarmac, delayed at the gate, or pushed to the next day, your rights depend on where you're flying, how long the delay lasts, and what caused it.
This guide breaks down the legal limits, compensation amounts, and expert strategies for every major jurisdiction — including a calculator to estimate your claim.
Only 5% of eligible passengers actually claim their flight delay compensation. Airlines count on passengers not knowing their rights — that's billions of euros in unclaimed compensation every year. Understanding the rules is the first step to making sure you're not leaving money on the table.
Legal Time Limits by Region
Flight delay rights vary significantly depending on where your flight departs and arrives. The EU has the strongest passenger protection laws in the world, but the US and international conventions also provide important safeguards. Here's how the major jurisdictions compare.
European Union (EC 261/2004)
The EU's flagship passenger rights regulation is the gold standard globally. Under EC 261, a delay of 3 hours or more at arrival triggers compensation — ranging from €250 to €600 depending on flight distance. There's no legal maximum on how long an airline can delay your flight, but after 5 hours you can demand a full refund and a return flight to your departure airport.
Airlines are also required to provide meals, drinks, and hotel accommodation for overnight delays — regardless of whether you're entitled to compensation.
United States (DOT Rules)
US rules are more limited but include the important tarmac delay rule: airlines cannot keep you on the plane for more than 3 hours (domestic) or 4 hours (international) without letting you deplane. Starting in 2024, the DOT also requires automatic refunds for "significant" delays — though each airline defines what "significant" means in its contract of carriage.
Unlike the EU, the US doesn't mandate fixed compensation amounts for delays. However, the Montreal Convention may apply to international flights.
United Kingdom (UK261)
Post-Brexit, the UK adopted UK261 — nearly identical to the EU regulation. The same 3-hour threshold applies, with compensation amounts in GBP equivalent. The key advantage for UK passengers is the 6-year claim window, compared to 3 years in most EU countries.
UK261 covers flights departing from UK airports (any airline) and flights arriving in the UK on UK-registered carriers.
Montreal Convention (International)
For international flights not covered by EU or UK law, the Montreal Convention provides a safety net. Unlike EC 261's fixed amounts, Montreal requires you to prove actual financial loss — receipts for missed hotel bookings, connecting flights, etc. The maximum is approximately €5,800, and you have a 2-year claim window.
EU Flight Compensation Amounts
Under EC 261/2004, compensation is based on flight distance — not ticket price. This means a €30 budget airline ticket qualifies for the same compensation as a €500 business class fare. Here are the exact amounts:
Remember: compensation is per person, including children with a paid ticket. A family of 4 on a long-haul flight delayed 4+ hours would be entitled to €2,400 total. With Gyro, you'd pay $19 for the demand letter and keep every cent of that €2,400.
Airlines also have separate obligations to provide care during delays. After 2 hours, they must offer free meals and refreshments. After 5 hours, you can opt for a full refund. For overnight delays, they must provide hotel accommodation and airport transfers. These rights apply regardless of compensation eligibility.
What to Do When Your Flight Is Delayed
When you're stuck at the airport, the last thing you want to think about is paperwork. But the steps you take during the delay can make or break your compensation claim later. Here's what matters most.
1. Ask for the reason in writing. Approach the gate agent and request a written confirmation of why the flight is delayed. Even a note on a business card counts — this is the single most important piece of evidence for your claim.
2. Document everything. Take photos of the departure board showing your delay. Keep all boarding passes and booking confirmations. Save receipts for any meals, transport, or accommodation you pay for out of pocket.
3. Note the actual arrival time. Under EU261, what matters is when the aircraft doors opened at your destination — not when the plane touched down. A flight that departed 4 hours late but arrived only 2.5 hours late doesn't qualify.
4. Don't accept vouchers as a substitute. Airlines often offer meal vouchers or travel credits to avoid paying cash compensation. You're entitled to cash under EU261 — vouchers are optional extras, not replacements.
5. Don't sign anything waiving your rights. Some airlines ask passengers to sign forms in exchange for rebooking or hotel accommodation. Read carefully — signing a waiver could forfeit your right to compensation.
