Error Fares Explained
Why mistake fares happen, whether airlines honor them, and how to book one sensibly.
- An error fare (mistake fare) occurs when an airline or online travel agency publishes a ticket price significantly below fair market value due to technical glitches or human currency input errors.
- Airlines are no longer legally mandated by federal regulations to honor mistake fares; they can cancel mistake tickets and issue full refunds.
- When booking an error fare, never book non-refundable hotels, rental cars, or positioning flights until the airline issues an official 13-digit ticket number.
- Never call the airline or customer service regarding an active error fare; calling alerts revenue managers who will immediately remove the glitch.
An error fare (also called a mistake fare or glitch rate) is an airfare published at an unintended, drastically discounted price due to human data entry mistakes, currency conversion formula bugs, or computer system calculation errors. Examples include international business class tickets retailing for $6,000 accidentally published for $450. While exhilarating to book, navigating error fares requires specific protocol.
The Evolution of Error Fare Regulations
Prior federal rules enforced strict compliance requiring airlines to honor any published fare. However, modern Department of Transportation (DOT) policy states that airlines are not required to honor mistake fares if they demonstrate that the fare was an unintentional error and provide full cash refunds alongside reimbursement for actual out-of-pocket expenses incurred.
| Error Fare Category | Root Technical Cause | Honoring Likelihood |
|---|---|---|
| Currency Conversion Glitch | Decimal place error or inverted FX rate in foreign currency | Low to Moderate (frequently cancelled) |
| Missing Fuel Surcharge (YQ Dump) | Ticketing algorithm drops carrier surcharge on open-jaw route | High (often tickets cleanly as valid partner fare) |
| Fat-Finger Base Fare Error | Agent enters $50.00 instead of $500.00 for base fare | Moderate (honored if passenger volume is low) |
| Online Travel Agency (OTA) Glitch | OTA pricing algorithm conflicts with airline GDS inventory | Low (OTA cancels and issues refund within 48 hours) |
The First Rule of Error Fares: Never Call the Airline: If you discover or book a mistake fare, never contact the airline’s customer service desk. Calling alerts revenue management supervisors, who will immediately shut down the fare and initiate automated cancellation sweeps. Wait quietly for the airline’s automated system to ticket the reservation.
The Error Fare Waiting Protocol
- Book Immediately: Error fares disappear within minutes to hours. Book the ticket directly with a credit card that offers robust travel protections.
- Verify the 13-Digit E-Ticket Number: A confirmation code (PNR) does not mean you have an issued ticket. Check your receipt for an official 13-digit e-ticket number.
- Wait 14 Days Before Booking Ground Logistics: Do not book non-refundable hotels, tours, or train tickets for at least two weeks. If the airline decides to cancel, they will typically notify you within 7 to 14 business days.
Understanding fare mechanics enables you to act decisively when extraordinary pricing anomalies emerge. Learn how airfare classes operate in our guide to airline booking habits, explore cancellation rights in our avoiding airline fees guide, and discover alliances in our airline alliances reference.
Frequently asked questions
Do airlines have to honor error fares?
Not always. Airlines can cancel some mistake fares and refund the ticket, so wait for the ticket to be confirmed before booking hotels or other non-refundable plans.
This guide is general information, not financial advice. Card terms change; confirm current terms with the issuer.