A name mismatch on a boarding pass can range from a minor inconvenience to a major travel disruption. If the error is a simple typo (e.g., "Jon" instead of "John"), most airlines in 2026 will correct it for free or a small fee at the check-in counter, provided you have matching government ID. However, if the name is entirely different or if your middle name is missing and you are traveling internationally, security (TSA or border control) may deny you entry to the gate. Under 2026 regulations, many airlines offer a 24-hour "grace period" after booking to fix errors for free. If you discover the mistake at the airport, you must visit the ticket counter immediately. If the ticket was booked through a third-party OTA (Online Travel Agency), you may be forced to call them to authorize the change, which can be time-consuming. In extreme cases involving non-changeable tickets, you might be required to cancel and rebook at current market prices.