Aer Lingus offers a 24-hour window to cancel your reservation without any fees. This policy provides peace of mind if you need to adjust your plans shortly after booking. The refund is processed quickly as long as the cancellation is made within the first 24 hours. If your plans have changed, now’s the time to make adjustments. Log in to your Aer Lingus account or contact their support team to proceed with your cancellation and secure your refund.