US DOT $The US tarmac delay rule

Checked 15 Sep 2026·7 min read

3 hours is the tarmac limit on a domestic US flight; 4 hours is the limit on an international one, under 14 CFR 259.4. The limit sets when you must be let off the aircraft, not what you are paid for the wait: for domestic itineraries, the Department of Transportation says airlines are not required to compensate passengers whose flights are delayed or canceled. Below are the limits, the food, water and communication duties, which flights the rule covers, and what to do once a long tarmac wait ends.

#US DOT $How long can a US airline keep you on the tarmac?

3 hours is the tarmac limit on a domestic flight; 4 hours is the limit on an international one. Before either limit passes at a US airport, 14 CFR 259.4 requires the airline to give you the chance to get off the aircraft, whether you are waiting to take off or waiting at the gate after landing.

Source: 14 CFR 259.4(c)(1)-(2), (c)(4), (c)(6) — ecfr.gov, checked 2026-09-15.

Every figure in that table is a deadline the airline has to meet, not a sum it has to pay.

The limit applies at a US airport on both ends of the flight: on the ground before departure, waiting for a gate or a runway slot, and on the ground after landing, waiting for a gate to open up. A wait that starts at the gate before pushback and a wait that starts on landing are each measured from their own start, and 14 CFR 259.4 puts the same limit on both.

No federal rule pays you cash for a tarmac delay by itself, however close it runs to the limit.

Note the time the doors closed, or the time you landed, so you can measure your own delay against the limit later.

#What must the airline provide during a tarmac delay?

2 hours is the deadline for food and drinkable water once a tarmac delay begins, under 14 CFR 259.4. A status update is required too, and much sooner: once the delay runs past 30 minutes, before the food-and-water deadline arrives at all.

Source: 14 CFR 259.4(c)(4), (c)(6) — ecfr.gov, checked 2026-09-15; 259.4(c)(5) — ecfr.gov, checked 2026-09-22.

Two duties run on different clocks, and the shorter one comes first. Once the delay passes 30 minutes, the airline owes you a status update on the delay. Food and potable water follow at the 2-hour mark, on either a domestic or an international tarmac delay. Example: a delay reaching 45 minutes has already triggered the update duty, and the same delay reaching 2 hours brings food and water regardless of how many updates you already received (DOT airline passenger rights).

A third duty has no clock at all. Under 259.4(c)(5) the airline must keep the lavatories operable, and provide adequate medical attention if anyone needs it, for as long as the tarmac delay lasts.

None of these duties is compensation. They are service standards for the wait itself, separate from the 3-hour or 4-hour deplaning limit and separate from any refund you might later be owed for the disruption that caused the delay in the first place.

#Which flights and airlines does the tarmac rule cover?

30 or more seats is the aircraft-size line for the US tarmac rule. Below that size, 14 CFR 259.4 does not apply at all. Above it, the rule covers US certificated and commuter carriers, and foreign carriers too, on any flight to or from a US airport.

Source: 14 CFR 259.2, 259.3, 250.2 — ecfr.gov, checked 2026-09-15.

Nationality of the airline does not decide coverage; the size of the aircraft and the fact that the flight touches a US airport do. A foreign carrier’s widebody arriving from overseas is covered on that US-airport leg the same way a US carrier’s domestic flight is. A small regional aircraft under the 30-seat line falls outside the rule altogether, whichever airline flies it. The same 30-seat line runs through the denied boarding rules in 14 CFR 250.2, which reach nonstop segments originating in the US on aircraft of 30 or more passenger seats. A turboprop below it sits outside both. The Chicago O’Hare airport page applies these limits at the airport with the most domestic arrivals of the five this site compares.

Check your aircraft’s seat count if your flight was on a small regional jet or turboprop — the rule may simply not reach it.

#When can an airline keep you on board longer?

Safety, security and air traffic control instructions are the only three exceptions in 14 CFR 259.4 that let a US airline hold you past the 3-hour or 4-hour tarmac limit. Anything outside those three reasons has to end in a deplaning opportunity once the clock runs out.

Source: 14 CFR 259.4(c)(3) — ecfr.gov, checked 2026-09-15.

The rule names three exception categories and no more. An airline holding you past 3 or 4 hours has to be able to point to one of them, and “we were waiting for a gate” names none of the three by itself. Whether the wait in fact fell inside a safety, security or air traffic control reason is the question a complaint puts to the Department of Transportation, which is why the reason you were given at the time is worth writing down.

Ask the crew, or the gate agent once you are off the aircraft, which of the three exceptions applied and why — that answer is what a DOT complaint about the delay would need.

#What can you do after a long tarmac delay?

3 hours or more late on a domestic arrival, or 6 hours or more on an international one, can turn a long tarmac wait into a “significantly delayed” flight under 14 CFR 260.2, opening a full refund if you turn the airline’s alternative down, or never answer it and do not fly. The tarmac limit itself pays nothing.

Source: 14 CFR 260.2, 260.6(a); DOT complaint page — ecfr.gov; transportation.gov, checked 2026-09-15.

A tarmac delay and a significant delay are two different rules that can end up covering the same event. If the ground time pushes your overall arrival 3 hours or more late domestically, or 6 hours or more late internationally, and you reject the alternative the airline offers — or do not respond to it and the flight goes without you — a refund becomes due under the automatic-refund conditions covered on the delayed or canceled flight rights page, separate from whatever happened on the tarmac itself.

If the airline held you past the limit without one of the three named exceptions, file a complaint: contact the airline first, then the DOT’s Office of Aviation Consumer Protection, online or by mail. The DOT directs the airline to respond to you; it does not pay a claim on your behalf. Nothing in the tarmac rule turns a breach of the limit into a payment to you.

Write down the time you boarded, the time any deplaning offer came, and the time you got off, before you file.

Not your situation? UK261 and EU261 cover departures from the UK and the EU, and neither sets a tarmac-delay limit of its own — the EU one exists only in the adopted but unpublished revision; Canada’s APPR does set a disembarkation rule. Work out which law fits at which-law-covers-my-flight, compare US and EU rules on the same trip at transatlantic flight compensation, or start from the US DOT hub for every other US rule.

General information, not legal advice. For your specific case: the DOT Office of Aviation Consumer Protection or a consumer protection attorney.

#Sources

• 14 CFR Part 259, Enhancing Airline Passenger Protections - ecfr.gov, checked 2026-09-15.
• 14 CFR Part 260, Refunds - ecfr.gov, checked 2026-09-15.
• U.S. DOT, Fly Rights - transportation.gov, checked 2026-09-15.
• U.S. DOT, File a Consumer Complaint - transportation.gov, checked 2026-09-15.

#FAQ

How long can you be kept on the tarmac?

3 hours is the limit on a domestic US flight; 4 hours is the limit on an international one, under 14 CFR 259.4. Before either point, the airline must give you the opportunity to deplane, unless a safety, security or air traffic control exception applies.

Does the tarmac rule apply to foreign airlines?

30 or more seats is the aircraft-size threshold that brings a flight under 14 CFR 259.4, whatever airline operates it. A foreign carrier's flight to or from a US airport is covered the same way a US carrier's flight is, once the aircraft meets that size.