Mistake Fares: How to Find and Book Airline Pricing Errors

Airline pricing is a strange, layered thing. You've got fare classes, fuel surcharges, taxes, and currency conversions, all published dynamically across millions of combinations. Add automation into that mix and it's honestly more surprising when nothing breaks.

Most mistake fares trace back to one of these:

• Human error, like a missing digit in the fare code

• Currency conversion mistakes between markets

• Glitches in automated pricing tools

• Taxes or fuel surcharges accidentally left out entirely

Going.com, a flight deal site, tracked 16 mistake fares in 2025 — more than double what it found in 2024. Its founder pointed to AI-driven pricing tools glitching, plus new airline partnerships that miscommunicated with each other, as the main drivers behind the jump.

Mistake fares aren't a 10%-off situation. When they happen, the numbers get a little ridiculous. Discounts of 60 to 90% off the normal price aren't unusual. Here's a look at some real examples from 2025:

Notice something? These weren't just economy seats to nearby cities. A few of them were premium cabins to places people save up for years to visit.

The Numbers at a Glance

• Mistake fares typically run 60% to 90% below the normal price

• 16 mistake fares were tracked in 2025, more than double the 2024 total

• Roughly 80% to 90% of mistake fares end up honored by the airline

• The remaining 10% to 20% get canceled, with a refund

Short answer: no. Under the Department of Transportation's 2015 Mistaken Fare Policy, airlines are not required to sell you a ticket at the price they accidentally listed.

But there's a catch that works in your favor. If an airline cancels a mistake fare, it has to refund your ticket in full and reimburse any reasonable, actual, and verifiable expenses you racked up because you trusted the price — think nonrefundable hotels, connecting flights, or visa fees.

What they can't do is quietly rebill your card for the "correct" amount without asking you first. In practice, most airlines just eat the loss and let the fare stand. Canceling thousands of bookings, processing refunds, and fielding a wave of complaints to the DOT usually costs more than the mistake itself. That's part of why the honor rate sits so high.

Here's the thing nobody tells you upfront: you're not going to stumble onto a mistake fare by casually browsing Google Flights on a Tuesday. These deals surface and vanish within hours, sometimes minutes. You need something watching for you.

Deal Alert Services

• Going.com — Premium sends alerts from your home airports, Elite adds every mistake fare regardless of departure city

• Secret Flying — publishes error fares within minutes of discovery

• Thrifty Traveler Premium

• Dollar Flight Club

• Airfarewatchdog

• Jet Setter Alerts

Community and Social Feeds

• FlyerTalk's Mileage Run Deals forum

• Reddit's r/flights

• Accounts like @SecretFlying on X, which move faster than most newsletters

You can also play detective yourself. Google Flights' Explore feature is good for this — if every Chicago-to-Rome flight is running $800 and one option shows up at $247, that's worth a second look.

Speed matters more than strategy here. Once an airline notices the error, the fix usually happens within hours, sometimes less. A few rules make a real difference:

• Book directly on the airline's own website. Third-party sites have to check back with the airline to finalize your ticket, and that extra step gives the airline time to fix the error before your booking goes through.

• Pay with a credit card. If the fare gets pulled, credit card refunds typically land within about seven business days, versus roughly 20 days for other payment methods. Credit cards also give you stronger dispute protection.

• Don't call to "confirm" the fare. Ringing up customer service to ask if the price is real is basically inviting someone to double-check the mistake you're hoping stays unnoticed. Book it, screenshot the confirmation, and sit tight.

• Use the 24-hour rule. The DOT requires US-bound and US-departing carriers to let you cancel for free within 24 hours of booking, as long as you booked at least a week before departure. That gives you breathing room to double-check your plans.

• Hold off on hotels and tours. The reimbursement protection for nonrefundable expenses exists, but claiming it means filing paperwork and waiting. It's not a reason to book a $400-a-night hotel the same afternoon you snag the flight.

Let us see what unfolds if you book a mistake fare.

The Airline Honors It (About 80–90% of the Time)

You fly at the price you paid. This happens more often than people expect, especially when the mistake touches a large number of bookings and the backlash from mass cancellations would cost more than the lost revenue.

The Airline Cancels and Refunds (About 10–20% of the Time)

You get your money back, plus reimbursement for any documented expenses tied to the booking. If an airline drags its feet on that, you can file a complaint with the DOT's Office of Aviation Consumer Protection.

The Airline Offers a Compromise (Occasionally)

Some carriers cancel the fare but toss in a travel voucher as a goodwill gesture. This is entirely up to them, not something you can count on.

Key Takeaways

• A mistake fare is an unintentional airline pricing error, not a special sale — currency glitches, dropped digits, and automated pricing tools are the usual culprits.

• Discounts often land between 60% and 90% off the normal fare.

• Airlines don't have to honor mistake fares, but if they cancel one, they owe you a full refund plus documented out-of-pocket costs.

• Most mistake fares (roughly 80–90%) get honored anyway.

• Book directly on the airline site, pay by credit card, and don't call to ask if the deal is real.

• Wait before booking nonrefundable hotels or tours until the fare has held for a while.

Realistically, most of us aren't going to land a mistake fare next month. Sixteen of them across an entire year, spread across every airline and every route, means the odds in any given week are slim. But if you set up a couple of alerts, keep your passport current, and move fast when something looks off, you're at least in the game.

And for the flights that aren't a fluke — just the ordinary business of finding a fair price without wasting an afternoon comparing tabs — that's the kind of legwork Triwize handles day to day, scanning across airlines so the good fares don't slip past you either.