AER LINGUS Discount Code & Coupons May 2026

How To Add an Aer Lingus Promo Code

Adding an Aer Lingus promo code starts directly in the flight search box, before moving into the fare selection and payment pages. On the Aer Lingus homepage, the booking panel appears underneath the large beach image and opens on the Find Flights tab, with the promo code option shown as a small Add Promo Code link on the right side of the form.

• 1

  Start on the Aer Lingus homepage and stay on the Find Flights tab. The booking box sits below the main banner and has four tabs across the top: Find Flights, Manage Trip, Check in, and Flight Status. Make sure Find Flights is selected before entering any travel details.
• 2

  Choose the type of journey. Round Trip is selected by default in the screenshot, but One Way and Multi-City are shown next to it. Pick the option that matches the booking, since the available dates, fare rules, and promo code eligibility can depend on the trip type.
• 3

  Enter the route details in the flight search form. The From field is already filled with Dublin (DUB), Ireland in the screenshot, and the next field says To: Enter Destination. Click into the destination box and add the airport or city for the trip.
• 4

  Add the travel dates and passenger details before searching. The form shows fields for Departure Date, Return Date, and 1 passenger underneath the route fields. Check these carefully, especially the passenger count, because discounts may apply only to certain routes, dates, cabins, or fare types.
• 5

  Before clicking Search Flights, look on the right side of the booking panel for the Add Promo Code link. It appears above the main form fields, aligned near the destination and date area. Click it to open the promo code field, then paste or type the Aer Lingus code exactly as shown, including any numbers, capital letters, or special characters.
• 6

  After the code is entered, continue by selecting Search Flights. Aer Lingus will show the available fares for the route and dates selected. If the promo code is valid for that booking, the discount should appear during the fare selection or checkout process before payment is completed.