Technically, you can "cancel" a Ryanair flight, but the airline operates on a strictly non-refundable model. If you decide not to travel, you do not need to notify them; you can simply not show up, and you will not be charged a "no-show" fee. However, you will lose the cost of your ticket. Refunds are only issued in extreme circumstances, such as the death of an immediate family member within 28 days of the flight or if Ryanair cancels the flight themselves. Most passengers find it more cost-effective to use the 24-hour grace period for minor corrections or pay a change fee to move the flight to a future date rather than losing the fare entirely.