Author:
Jamie Callahan
Date:
Imagine booking a round-trip flight from New York to Paris for $150. Or a first-class ticket to Tokyo for the price of economy.
These are not just lucky deals; they are mistake fares, also known as error fares, and they are the holy grail of travel hacking.
While airlines have gotten better at catching them, mistake fares still happen in 2026. If you know where to look and how to act quickly, you can score the cheapest flights of your life. Here is exactly how mistake fares happen, how to find them, and the golden rules for booking them before they disappear.
What is a Mistake Fare?
A mistake fare is exactly what it sounds like: an airline or online travel agency accidentally prices a flight significantly lower than intended. These errors can result in discounts of 50%, 80%, or even 90% off the normal ticket price.
Mistake fares usually happen for one of three reasons.
Human Error: The most common cause is a simple typo. An airline employee might accidentally drop a zero when entering a fare into the system, turning a $1,500 flight into a $150 flight.
Currency Conversion Glitches: When airlines load fares into global distribution systems, they have to account for dozens of different currencies. Occasionally, a glitch in the conversion software will drastically underprice a ticket when purchased in a specific currency.
Routing and Fuel Surcharge Errors: Airlines often add carrier-imposed surcharges to international tickets, which can make up a huge portion of the total price. Sometimes, complex itineraries or specific combinations of airlines will cause the booking system to accidentally drop these surcharges entirely, resulting in a massive discount.
How to Find Mistake Fares
You are highly unlikely to stumble upon a mistake fare just by randomly searching Google Flights. Because they are errors, airlines fix them as soon as they notice them, usually within a few hours.
To catch a mistake fare, you need to rely on the experts who monitor flight prices 24/7.
Follow the Deal Hunters: The easiest way to find mistake fares is to let someone else do the work. Websites and newsletters like Secret Flying, Thrifty Traveler, and Going (formerly Scott's Cheap Flights) have teams of people and algorithms constantly scanning for pricing anomalies. When they find a mistake fare, they immediately alert their subscribers. If you want to catch these deals, you need to be on their email lists and follow them on social media with notifications turned on.
Use Broad Searches on Google Flights: If you want to hunt for mistake fares yourself, the best tool is the Explore feature on Google Flights. Instead of searching for a specific destination on a specific date, enter your home airport and leave the destination blank. Leave the dates flexible. Google Flights will show you a map of the world with the cheapest available prices. If you see a price that looks too good to be true, like $200 to Europe or $300 to Asia, click on it immediately. It might be a mistake fare.
The Golden Rules of Booking Mistake Fares
Finding a mistake fare is only half the battle. Booking it requires speed and strategy.
Rule 1: Book Immediately. Mistake fares do not last. The airline will fix the error as soon as they realize it, which could be in 10 minutes or 10 hours. Do not wait to check with your boss about time off. If you see a mistake fare, book it immediately. In the U.S., the Department of Transportation requires airlines to offer a 24-hour risk-free cancellation policy for flights booked at least seven days in advance. This means you can book the mistake fare now to lock it in, and figure out the logistics later.
Rule 2: Do Not Call the Airline. If you find a mistake fare, do not call the airline to confirm it. Calling the airline will only alert them to the error, and they will fix it before you can book it. Book the ticket online and wait quietly.
Rule 3: Wait to Book Hotels and Activities. Just because you booked a mistake fare does not mean you are guaranteed to fly. Airlines are not legally required to honor mistake fares if they can prove it was a genuine error. While airlines often do honor them to avoid bad PR, they sometimes cancel the tickets and issue refunds. Because of this risk, you should wait at least a week or two after booking a mistake fare before making any non-refundable hotel reservations.
The Alternative to Hunting for Mistakes
Hunting for mistake fares is thrilling, but it requires incredible flexibility. You have to be willing to fly to random destinations on specific dates, often with very little notice.
For most travelers who have specific places they want to go on specific dates, the best strategy is to book a standard economy ticket early, and then automate your price monitoring.
This is where Repriced.ai comes in. Instead of manually checking your flight price every day, Repriced connects to your email and monitors your bookings automatically.
When the airline's dynamic pricing algorithm inevitably drops the fare, Repriced catches it and automatically rebooks you at the lower rate, refunding the difference. You get the peace of mind of booking early, combined with the financial benefit of catching the lowest possible price before you fly. It is the ultimate travel hack for 2026, and it does not require you to fly to a random city on a Tuesday.