Ryanair offers a 24-hour window to correct any minor errors in your booking, but they do not allow full refunds or cancellations within 24 hours. If you realize an error, it’s best to act quickly and make any necessary changes online. Beyond this window, additional fees may apply for further adjustments. Be proactive and check the terms on Ryanair’s website to ensure you understand their policies. Stay informed and take prompt action for any booking corrections.