Ryanair’s 24-hour cancellation policy is not as flexible as some airlines. While you can't expect a full refund within 24 hours of booking, you may be able to cancel or change your flight, though a fee may apply depending on your ticket type. Some fare options like Flexi Plus may provide more flexibility. Review your booking for specific terms or contact Ryanair’s customer support to understand what’s possible and get any help you need with your cancellation.