Yes, Iberia Plus Avios expire after 36 months of inactivity in your account. To keep your balance active, you must have at least one "earning" or "spending" transaction every three years. The definition of "activity" is quite broad: you can take a flight with Iberia or a partner, stay at a participating hotel, rent a car, or even just buy a small number of Avios through their portal. Even a simple transfer of points from a partner program like American Express Membership Rewards will reset the 36-month clock. In 2026, it is worth noting that unlike some other airline miles that have a "hard expiry," Iberia Avios are relatively easy to protect as long as you engage with the program once every few years. If you go 36 consecutive months without any activity, your entire balance will be voided, and Iberia is generally very strict about not reinstating them.