On flights within Europe, Aer Lingus cancellations work as follows:
Saver and Plus rates can't be refunded, nor can booking and administration fees, incl. baggage, meal and seating fees.
Advantage and Aer Lingus Cancellation Policy are often canceled and refunded, provided you cancel up to 2 hours before departure. However, if the first rate purchased by you was non-refundable and was later changed, only the speed difference will qualify for a refund. However, the reservation and administration costs, incl. Baggage, meal and seating fees are non-refundable.