What is the exact tarmac delay rule in the US?

14 CFR 259.4. Airlines cannot hold a domestic flight on the tarmac for more than 3 hours (4 for international) without offering passengers an opportunity to deplane, unless safety, security, or ATC reasons apply.

When does the tarmac clock start?

At pushback for departures, or at landing for arrivals. Not at the scheduled departure time and not at boarding. The rule measures time on the tarmac, not total flight delay.

What must airlines provide during a tarmac delay?

Operational lavatories throughout, food and potable water by 2 hours, medical attention on request, and status updates every 30 minutes. These are minimum obligations and start at the 2-hour mark.

Can the airline refuse to deplane after 3 hours?

Only for safety (weather, fire risk), security (threat or emergency), or if ATC advises that returning to the gate would significantly disrupt operations. These exceptions are narrow and the airline must document them in its tarmac delay report.

What is the fine for a tarmac rule violation?

DOT can fine airlines up to $27,500 per passenger per violation. The fine goes to the US Treasury, not to individual passengers. Passengers must file separate compensation or refund claims.

Is a tarmac delay the same as a flight delay?

No. A tarmac delay is time spent on the runway or taxiway after pushback (or before reaching the gate after landing). A flight delay is the gap between scheduled and actual arrival. You can have a long flight delay without a long tarmac delay, and vice versa.

Do foreign airlines have to follow the rule?

Yes, when operating to or from a US airport. Every covered carrier under 14 CFR 259 includes US carriers and foreign carriers on US-departing or US-arriving flights. The rule does not depend on the airline's home country.

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Tarmac DelaysApril 21, 2026•8 min read

Domestic 3-Hour Tarmac Rule: Exact Text

The domestic 3 hour tarmac rule lives at 14 CFR 259.4. Here is the exact regulatory text, the clock-start definition, the required services inside the 2-hour mark, and how airlines have tried to interpret their way around it in 2026.

The Regulation: 14 CFR 259.4

The domestic 3 hour tarmac rule is codified at 14 CFR 259.4. The operative text: "For domestic flights, covered carriers may not permit an aircraft to remain on the tarmac at a U.S. airport for more than three hours without deplaning passengers, with exceptions only for safety or security reasons or if air traffic control advises the pilot in command that returning to the gate would significantly disrupt airport operations."

The rule applies to every US airline and every foreign airline's flights to or from the US. The 3-hour threshold is for domestic. The 4-hour threshold applies to international flights under the same regulation. See international 4 hour tarmac rule for the foreign-leg variant.

When the Clock Starts

For departures, the clock starts when the aircraft door closes and pushback begins. For arrivals, the clock starts when the aircraft lands and taxis off the runway without reaching a gate. The rule does not start at scheduled departure time, at boarding, or at the original gate assignment.

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Departure delay on the tarmac: clock starts at pushback, ends at deplaning or takeoff.
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Arrival delay on the tarmac: clock starts at landing, ends at arrival at the gate or deplaning to a remote stand.
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Mid-trip diversion: each tarmac segment after landing is measured separately.
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Return to gate and pushback again: clock resets on new pushback, but the airline must document the reason.

For airport-specific delay patterns, see tarmac delays at DFW and the pillar tarmac delays 2026 guide.

Required Services Inside 2 Hours

By 2 hours of tarmac delay, airlines must provide food and potable water, operational lavatories, medical attention if requested, and accurate status updates every 30 minutes or as circumstances change. These obligations start at the 2-hour mark and continue until deplaning or takeoff. They are not optional and not dependent on the cause of the delay.

Snacks count as food. A single pretzel pack per passenger satisfies the letter of the rule. Bottled water satisfies potable water. Crews have historically done the minimum. If your tarmac delay runs long and the crew fails even the minimum, document it for your DOT complaint.

The 3-Hour Hard Deadline

At 3 hours (domestic) or 4 hours (international), the airline must either return to the gate and offer deplaning, or take off. The only lawful exceptions are safety (weather too dangerous to taxi), security (threat or emergency), or ATC instruction that returning to the gate would significantly disrupt airport operations. These exceptions are narrow and the airline must document them.

The rule does not require the airline to cancel the flight. It requires the option to deplane. In practice, many flights that return to the gate at the 3-hour mark do take off an hour or two later. Passengers who deplane usually lose their seat on the eventual takeoff.

DOT Fines and Enforcement

DOT can fine airlines up to $27,500 per passenger per violation for tarmac rule breaches, under 49 USC 46301. The agency publishes quarterly enforcement data. In 2024 and 2025, fines ran into the millions against American Airlines and JetBlue for repeat tarmac incidents. See DOT tarmac delay fines 2026 for the current year's enforcement data.

Passenger compensation is separate from DOT fines. The rule requires airlines to file a tarmac delay report, which DOT can fine against. Individual passengers do not get a share of the fine. To recover your own losses, file a DOT complaint and pursue any applicable refund or compensation claim.

What Counts as Deplaning

The rule requires an "opportunity" to deplane. This means a safe egress path, typically a gate with a jet bridge. Remote stands with airstairs qualify if safe. The airline is not required to offer a full deplaning to the terminal, only a safe exit from the aircraft. For the exact boundaries see what counts as deplaning the plane.

Passengers who refuse to deplane when offered lose their protection under the rule for the remainder of that tarmac incident. The airline can then keep the aircraft at the gate or push back again, and the 3-hour clock resets on pushback.

Filing a Tarmac Complaint

1
Document the timeline: note pushback time, updates from the cockpit, food/water delivery time, gate return or takeoff time.
2
Save boarding passes and any airline communication.
3
File with DOT at transportation.gov/airconsumer within 90 days.
4
State the airline, flight number, date, departure airport, and the exact timeline in the complaint narrative.
5
Cite 14 CFR 259.4 and describe which obligation was breached (3-hour hard stop, 2-hour food/water, updates, or lavatory access).
6
Request DOT fine and personal refund, if applicable.

For a complaint template pre-filled with the 259.4 citations, see tarmac delay DOT complaint template. TravelStacks can handle the claim end to end. Start your claim in 30 seconds.

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