You can manage your booking, add pre-reserved seats, hold baggage as well as check-in online on the Aer Lingus website.
Click here, enter your Booking Reference number and the family name of the first passenger. (You can find your Booking reference on the confirmation we sent to you when you booked)
Online Check-in (optional), open 30 hours before your flight
Airport check-in, available free of charge. Just turn up with your booking reference number