Unfortunately, Ryanair does not offer a 24-hour window for free cancellations. Once your booking is complete, the fare becomes non-refundable, even if you cancel within 24 hours. This policy is stricter than those of many other airlines, which do provide a grace period for free cancellations and full refunds.
Although you cannot cancel for free, Ryanair does allow for changes within 24 hours of booking if you’ve made an error. This includes correcting names, flight dates, and times. After this period, any changes will likely incur fees, and the ticket will remain non-refundable. If you need to cancel after this time frame, you may only receive a refund for government taxes, not the fare itself.