To cancel an American Airlines flight in 2026, the most efficient method is through the official website or mobile app. Log into your account or use the "Find Your Trip" feature with your 6-character record locator (PNR). Once the trip details are displayed, select the "Cancel Trip" button. If you booked a "Refundable" ticket, the funds will be returned to your original form of payment within 7–14 days. If you have a "Non-Refundable" ticket, the system will typically issue a Trip Credit for the remaining value after any applicable fees, which must be used within one year. For 2026, American has simplified the process for "Basic Economy" tickets, which were previously non-changeable but may now be eligible for partial credit if canceled online. If you booked through a third-party site like Expedia, you must contact that agent directly. It is important to cancel at least before the flight's scheduled departure to avoid being marked as a "No-Show," which often results in the total forfeiture of the ticket's value.