Ryanair's cancellation policy states that customers can cancel their flight up to 60 days before the scheduled departure date and receive a refund in the form of a credit voucher. The voucher can be used to book a new flight on Ryanair within 12 months of the original booking date. If a flight is cancelled within 60 days of the departure date, no refund will be given.

https://www.airlinesmap.com/ryanair-cancellation-and-reimbursement