The Aer Lingus cancelation policy is extremely straightforward. You will receive an online or offline notification if Aer Lingus has to cancel your flight. You can either reschedule or cancel your flight when an airline cancels it. Reservations for Aer Lingus can be canceled up to two hours before to the departure time. You have the given window of time on your ticket to notify the airline of any cancellations. Depending on your fare class and cancellation period, Aer Lingus will impose a cancellation fee. https://flightcancellationpolicy.com/aer-lingus-cancellation-policy