AER LINGUS Discount Code & Coupons May 2026

How To Add an Aer Lingus Promo Code

Aer Lingus shows its promo code option at the very start of the booking process, inside the flight search panel on the homepage. In the screenshot, the link is labeled “Add Promo Code” and appears on the right side of the Find Flights form, before the flight search is submitted.

• 1

  Go to the Aer Lingus homepage and use the main booking box under the large travel image. The form opens on the Find Flights tab, with Manage Trip, Check in, and Flight Status shown beside it. Stay on Find Flights to book a new trip.
• 2

  Select the trip type before entering the route. The screenshot shows Round Trip already selected, with One Way and Multi-City available next to it. Choose the option that matches the booking, since the form fields and promo code eligibility may change depending on the journey type.
• 3

  Fill in the departure and destination fields. The From box is already set to Dublin (DUB), Ireland in the screenshot, and the next field says To: Enter Destination. Click into the destination field and choose the city or airport for the trip.
• 4

  Add the travel dates and passenger details. The lower part of the form includes fields for Departure Date, Return Date, and 1 passenger. Check these details carefully before searching, because Aer Lingus promo codes are often tied to certain routes, dates, fares, or passenger types.
• 5

  Before clicking Search Flights, look to the right side of the booking form for the Add Promo Code link. It sits above the main route and date fields, aligned near the destination area. Click this link to open the promo code entry field.
• 6

  Enter the Aer Lingus promo code exactly as provided, then continue with Search Flights. After the available fares load, check the price before moving on to payment. If the code does not apply, review the terms for travel dates, selected routes, fare type, minimum spend, or exclusions such as taxes, fees, baggage, seats, and other add-ons.