I am re-activating this expired deal. I will update it and validate that it works to enjoy this deal.
10% off per booking is valid on select vacation packages using Promo Code LUCKY10 for new bookings made through November 8, 2017. Promo Code is valid to use through online check out process or booked via the Aer Lingus Vacation Store call center (Monday through Friday 9:00 AM - 12:00 AM ET, Saturdays & Sundays 10:00 AM - 6:00 PM ET). Subject to availability. Valid for new bookings only. Discount of 10% of total price will apply only once per passenger, is not valid for airfare only, or any other products or services. May not be combined with other offers/discounts, cannot be partially redeemed and is not redeemable for cash. Promo code may not apply to some discounted vacations incl. Fly & Drive and Air + Dublin Hotel packages. Additional restrictions may apply.
I am verifying that this deal works as described, you can go there and Get 10% Off Sitewide at Aer Lingus.