Get to the airport gate or ticket counter of your airline as fast as possible and ask to be put on the next available flight. If you missed your flight because of something the airline did—a late connection, a gate change you weren't told about—they'll rebook you for free, often on the spot. If you missed it on your own (traffic, a long security line, you overslept), you're relying on the airline's policy, and most major US carriers will rebook you if you show up within about two hours of your original departure. Speed matters more than anything else here. Start moving before you finish reading this.
First: Figure Out Whose Fault It Was
The airline's obligations depend entirely on why you missed the flight. There's no US federal law that forces an airline to rebook a passenger who arrives late through no fault of the carrier—unlike refunds for cancellations, this part is governed by each airline's contract of carriage. So sort your situation into one of two buckets:
The airline caused it. Your inbound flight landed late and you missed the connection. There was a gate change, a boarding-time change, or a delay that ate your buffer. In these cases the airline rebooks you at no charge on the next available flight, and if the delay is long enough, most carriers provide meal vouchers or a hotel for overnight waits. This is spelled out in each airline's customer service commitments, which the DOT now requires them to publish and honor.
You caused it. You got stuck in traffic, misjudged the TSA line, or your ride fell through. Here you're at the mercy of the airline's policy—but the good news is that the big three all have some version of a grace window.
The "Flat Tire Rule" — Your Best Friend When You're Late
Most US airlines follow an informal, unwritten policy known in the industry as the "flat tire rule." If you show up at the airport within roughly two hours of your scheduled departure and you missed the flight for a reasonable, unavoidable reason, the airline will usually put you on the next available flight in the same class without charging a change fee or fare difference. It's not published, it's discretionary, and it's not guaranteed—but agents grant it regularly if you ask politely.
A few things that make this go smoothly:
- Be honest and brief. "I had a flat tire on the way in" or "traffic on the interstate was backed up for miles" works better than a long story.
- Ask specifically to be rebooked on the next flight under the flat tire rule. Using the term signals you know what you're asking for.
- Get there fast. The two-hour window is a rule of thumb, not a promise. The sooner you're standing at the counter, the more flexible the agent tends to be.
- Don't cancel or no-show your ticket first. If you no-show on the departing flight, some airlines automatically cancel the rest of your itinerary, including your return. Talk to a human before you touch anything in the app.
What to Do in the Next 30 Minutes
Work these in parallel—don't do them one at a time.
- Call the airline while you walk to the counter. Phone agents and gate agents can both rebook you, and whichever answers first wins. If you have elite status, use the priority line—it's dramatically faster.
- Open the app and check the next flights yourself. Know your options before the agent tells you what's "available." If you can see three later flights with open seats, you can push for the one that works.
- Head to the counter, not the kiosk. Kiosks rarely handle missed-flight rebooking. You want a person.
- If the line is enormous, call and DM at the same time. Twitter/X and the airline's chat can sometimes rebook you faster than the physical line during a busy day.
If your missed connection was the airline's fault and no more flights leave that night, you can request a hotel and meal voucher. American, United, and Delta all provide overnight accommodations for controllable delays—but you have to ask. They won't volunteer it.
What the Major Airlines Actually Do
| Airline | Same-day rebooking if you're late | Change fees |
|---|---|---|
| Delta | Will typically rebook under flat-tire discretion if you arrive within ~2 hours | $0 change fees on main cabin and above for domestic and most international; Basic Economy is non-changeable |
| United | Similar discretionary rebooking; standby on later flights often available | $0 change fees except Basic Economy |
| American | Discretionary rebooking; ask for next available flight | $0 change fees except Basic Economy |
| Southwest | No change fees at all; missed-flight fares generally held as travel funds | $0 change fees; fare difference may apply |
The big trap is Basic Economy. On Delta, United, and American, these fares are usually non-changeable and non-refundable, which means a missed flight can wipe out the ticket value entirely. If you booked Basic Economy, be extra early, and if you miss it, throw yourself on the agent's mercy immediately—sometimes they'll still help, but you have no contractual right to it.
If You Booked Through a Third Party
Booked on Expedia, a travel agency, or another online site? This complicates things. The airline can often still rebook you at the counter, but changes and refunds may need to go through the agency you booked with. Call the airline first anyway—if they can fix it directly, great. If they tell you to contact the booking site, do it immediately, because agency phone lines can have long holds and every minute of delay reduces your rebooking options.
When You Don't Want to Rebook — Getting Your Money Back
If the airline caused the missed connection and you decide not to travel at all, you're entitled to a refund. Under the DOT's 2024 refund rule, airlines must automatically provide a cash refund—not a voucher—when they cancel or significantly change your flight and you choose not to accept the alternative. A missed connection caused by the airline's delay counts as a significant change on the trip you paid for. The refund must go back to your original form of payment within seven business days for credit cards and 20 days for other payments.
If you missed the flight yourself and the fare was refundable, you can cancel for a refund. If it was non-refundable, you'll usually get a travel credit for the value minus any applicable difference—except Basic Economy, which typically gives you nothing.
Protecting Yourself Next Time
A few habits cut your missed-flight risk to almost zero:
- Book longer layovers. Anything under 45 minutes domestic or 90 minutes international is asking for trouble, especially if you're changing terminals or clearing customs.
- Speed up security. A trusted-traveler program pays for itself the first time it saves your flight. See our breakdown of TSA PreCheck vs CLEAR vs Global Entry to pick the right one.
- Build in buffer for anything unpredictable. Traveling with a car seat, stroller, or little one? Give yourself extra time—our guide to flying with a baby or infant covers realistic timing. Same goes if you're flying with a pet, since check-in for animals takes longer.
- Turn on flight alerts. Gate changes and boarding-time bumps are a leading cause of missed connections. Airline app notifications catch them faster than the airport screens.
And if the reason you missed your connection was that the airline oversold and bumped you—that's a completely different situation with federally mandated compensation. Read Bumped from a Flight? Denied Boarding Compensation Explained, because you may be owed up to $2,150 in cash.
Frequently Asked Questions
Will I have to pay for a new ticket if I miss my flight?
Not necessarily. If the airline caused it, they rebook you free. If you were late on your own, most major carriers will rebook you at no charge under the informal flat tire rule if you arrive within about two hours—though it's discretionary. The main exception is Basic Economy, which is usually non-changeable, so you could lose the fare entirely.
What happens to my return flight if I miss the outbound?
This is the dangerous part. Many airlines automatically cancel the remaining segments of your itinerary—including your return—if you no-show for a flight. Never simply skip the flight and assume the rest holds. Call the airline before your departure time and tell them what's happening so they can protect the rest of your trip.
Can I get a refund instead of a rebooking?
If the airline caused the missed connection and you choose not to travel, yes—the DOT's 2024 rule requires an automatic cash refund to your original payment method. If you missed the flight yourself, a refund only applies if your fare was refundable; otherwise you'll typically get a travel credit, or nothing on Basic Economy.
What if the agent refuses to rebook me?
Stay calm and ask to speak with a supervisor, then try a different agent or the phone line, since discretion varies person to person. If the airline caused your missed connection and refuses to rebook or refund you, document everything and file a complaint. Our guide on how to file a DOT complaint against an airline walks you through it step by step.