A fully waitlisted ticket occurs when you have paid for a fare, but the airline (or railway) has not yet confirmed a specific seat for you because the craft is currently at maximum capacity. This is common in systems like the Indian Railways (IRCTC), where it is known as a Waitlisted (WL) status. On a fully waitlisted ticket, you are essentially "in line" for a seat that might become available through a cancellation. If enough people cancel before the "chart preparation" (usually a few hours before departure), your ticket will move to a confirmed status. However, if the ticket remains fully waitlisted at the time of departure, you are generally not permitted to board the craft. For airlines, being on a waitlist often happens when you are trying to use frequent flyer miles for an "award seat" that isn't currently open. In 2026, many digital booking systems provide a "Confirmation Probability" percentage to help you decide if it is worth keeping the waitlisted ticket or booking an alternative. If a waitlisted ticket fails to confirm, the passenger is usually entitled to a full refund of the fare, minus a small administrative processing fee.