The 24-hour rule for canceling a flight: what DOT requires

By the Jumbo Flights editorial team · Published October 28, 2026 · Updated October 28, 2026

Yes, in many cases you can undo a flight booking within 24 hours without paying a penalty, but only if you booked at least a week before departure. The federal rule, 14 CFR 259.5, requires airlines to either hold your reservation at the quoted fare without payment or let you cancel without penalty for at least 24 hours, and the airline chooses which of the two it offers.

That choice is the detail most travelers miss. The rule does not guarantee a refund of a ticket you have paid for. This guide walks through exactly what the regulation says, which flights it covers, how it differs from the separate rules on airline-caused cancellations, and the steps to take if you book a fare and change your mind.

What exactly does the 24-hour rule say?

The rule is one line in a longer list of airline customer service duties. Section 259.5(b)(4) says each covered airline's customer service plan must allow "reservations to be held at the quoted fare without payment, or cancelled without penalty, for at least twenty-four hours after the reservation is made if the reservation is made one week or more prior to a flight's departure."

Three parts of that sentence matter:

• "Held ... without payment, or cancelled without penalty." The word "or" gives the airline a choice. It can let you reserve a seat and pay later, or it can take your payment and let you cancel for free during the window.
• "At least twenty-four hours." The window starts when the reservation is made, not at midnight and not at the first flight. An airline may allow longer, but not shorter.
• "One week or more prior to a flight's departure." If the flight leaves in fewer than seven days, the rule does not apply.

The text sits in 14 CFR Part 259, titled "Enhanced Protections for Airline Passengers." You can read the current wording on the eCFR page for section 259.5.

Hold or cancel: which one will I get?

Either one satisfies the rule, so you need to check what your airline offers before you buy. The practical difference is whether money leaves your account.

Many airlines describe their version in a "24-hour" or "risk-free cancellation" policy on their own site or in their fare rules. Because the wording differs by airline and can change, read the policy on the airline's site on the day you book rather than relying on a general summary, including this one.

Which flights and airlines does it cover?

It covers every flight of a US airline and every flight to or from the US of a foreign airline, as long as the carrier uses aircraft originally designed for 30 or more passenger seats. Section 259.2 defines the scope this way: it applies to all the flights of a certificated or commuter air carrier operating scheduled or public charter service with such aircraft, and to all flights to and from the US of a foreign air carrier doing the same.

In practice that gives you these cases:

1. A US airline, domestic or international, such as a New York to London or Phoenix to Las Vegas flight on a US carrier: covered.
2. A foreign airline flying to or from a US airport, such as a Paris to New York flight on a European carrier: covered on that flight.
3. A foreign airline flying between two non-US points, such as Paris to Rome: not covered by this US rule. Other protections may apply under EU or UK rules, which we cover in our EU261 delay compensation guide.
4. Charter operations by foreign carriers that do not pick up passengers in the US: excluded by section 259.2.

Section 259.3 defines a "covered carrier" as a certificated carrier, a commuter carrier or a foreign air carrier operating to, from or within the United States with at least one aircraft of 30 or more designed seats.

Does the one-week requirement apply to me?

It applies if your departure is seven days or more after the moment you book. The regulation measures from when the reservation is made to the flight's departure. A reservation made on a Monday for a flight leaving the following Monday or later sits on the protected side. A reservation made on a Tuesday for that same Monday flight does not.

Flights with multiple segments raise an obvious question: which departure counts? The regulation says "a flight's departure," and it does not spell out how an airline should treat a multi-city itinerary. If your itinerary starts close to the one-week line, ask the airline before you rely on the window.

What if I booked through a travel site instead of the airline?

The regulation's text puts the duty on airlines, not on booking sites, and it does not say how a third-party booking should be handled. That leaves a gray area, so treat the booking site's own terms as the first thing to check.

A few practical steps reduce the risk:

• Read the cancellation terms on the booking page before you pay. They usually say whether the site, the airline or both process changes.
• If the site says you must contact the airline, call the airline within the 24 hours and ask whether the ticket qualifies.
• Keep the confirmation email and the time it was sent.

Booking directly with the airline removes most of the guesswork, because the airline controls the ticket from the start.

How do I cancel within 24 hours and get my money back?

Cancel as early as possible inside the window, preferably in the airline's own app or website, and confirm you receive a written cancellation. Here is a simple sequence:

1. Note the booking time. Your confirmation email should show when the reservation was made. The 24 hours run from that moment.
2. Check the departure date. The reservation must have been made at least seven days before departure.
3. Find the airline's 24-hour or risk-free policy. Look for it on the airline's site or in the fare rules attached to your booking.
4. Cancel inside the window. Use the manage-trip tool if it offers a full cancellation. If the tool only offers a travel credit, call the airline and ask for cancellation under the 24-hour policy.
5. Save the confirmation. Keep the cancellation email or reference number.
6. Watch your statement. Confirm the money returns to the card or account you paid with.

If you booked a fare and are still comparing options, a fare calendar helps you decide before you buy. See the cheapest months on our New York to London fare calendar or the New York to Paris page and our guide to flexible dates to avoid needing to cancel at all.

How and when do I get the refund?

If a refund is due, the airline must send it back in the original form of payment, and it may not keep a processing fee. Section 259.5(b)(5) requires "prompt refunds in the original form of payment," meaning the payment method you used, such as a credit card, debit card, check, cash or airline miles. The airline can issue a different cash-equivalent payment only if you agree to it. The same paragraph says carriers may not retain a processing fee for issuing refunds that are due.

The specific refund deadlines in the US rules, 7 business days for credit card purchases and 20 calendar days for other forms of payment, come from the separate refund rule in 14 CFR Part 260, which covers refunds when the airline cancels or significantly changes a flight. They are described in our US airline refund rules guide. The 24-hour rule itself, in section 259.5, says only that refunds be prompt and in the original form of payment, so do not assume the Part 260 deadlines apply word for word to a change-of-mind cancellation. If a refund is slow, ask the airline for a date in writing.

How is this different from a refund when the airline cancels?

The 24-hour rule is about your own change of mind in the first day after booking; the refund rules in Part 260 are about what happens when the airline cancels your flight or changes it significantly. They are separate rules and they work differently.

Part 260 also covers refunds of fees for services you paid for but did not receive. Section 260.4 requires a prompt and automatic refund of ancillary fees when the service was not provided through no fault of the consumer, such as a prepaid service that is not used because the flight was canceled.

What if my plans change after the 24 hours are up?

After the window closes, your fare's own rules decide, and many fares do not allow a refund. The 24-hour rule ends the protection; it does not change what a nonrefundable ticket allows afterward. What matters then is the fare type, the airline's change policy, and whether your travel is eligible for credits.

Before you buy a fare you are not sure about, consider these approaches:

• Book the fare with a hold or a penalty-free cancellation window if the airline offers one, and use the window to confirm dates with everyone traveling.
• Compare how much flexibility a slightly higher fare gives you, using the fare rules shown at checkout.
• Check your credit card and travel insurance terms for trip protection, which can pay for covered reasons. Our travel services page lists tools for trips abroad, including eSIM and airport transfers.

If the airline, not you, changes the flight after the window, go back to the refund rules above, because your options are stronger in that situation.

What should I check before I book?

Check four things on the day you buy: the airline's 24-hour wording, the departure date against the one-week line, whether you are booking directly or through a third party, and what happens to your payment if you cancel. Write down the time of booking so you can prove you were inside the window.

If you are planning a longer trip with many bookings, such as flights to Las Vegas on our Phoenix to Las Vegas route page, make the 24-hour check part of your routine. It costs a few minutes and can save you from locking in a mistake.

Sources

• eCFR: 14 CFR 259.5, Customer Service Plan (24-hour hold or cancel, original form of payment)
• Cornell Legal Information Institute: 14 CFR 259.2, Applicability
• Cornell Legal Information Institute: 14 CFR 259.3, Definitions (covered carrier)
• eCFR: 14 CFR Part 260, Transparency of airline ticket refunds and ancillary fees

Frequently asked questions

General information, not legal advice. Found an error? Tell us and see our corrections policy.