Booking a flight often requires quick decisions, but what if you need to cancel? If you’re wondering, "Is Aer Lingus cancellation policy 24 hours?" you’ll be glad to know that Aer Lingus does offer a 24-hour cancellation policy. This allows you to cancel your flight within 24 hours of booking without incurring any fees, provided the booking was made directly through Aer Lingus. To utilize this policy, visit the Aer Lingus website, log into your account, and go to the "Manage Trip" section. From there, you can cancel your flight and receive a full refund. This policy, however, may not apply if your booking was made through a third-party platform, so be sure to verify the cancellation terms with them.