Yes, Ryanair offers a 24-hour cancellation policy. +1-8555/6840/31 or +44 (80)8599-87-05 If you cancel within 24 hours of booking, you can receive a full refund. For more details, contact Ryanair customer service at +1-8555/6840/31 or +44 (80)8599-87-05.
https://www.devex.com/people/does-ryanair-have-a-free-cancellation-period-2263387
