For your comfort on board and to ensure you can sit with family and friends, Iberia and Iberia Regional Air Nostrum give you the option of choosing your seat from the moment you book your flight.
This advance seat selection service is subject to a fee depending on the fare, the details of which you can find on the Advance seat selection page.
If you have already issued your ticket, you can check the conditions and select your seat in Manage your booking or in Online check-in.

Provided it did not require payment, you can change your previous seat selection at any time through Manage your booking. In the case of paid seat selections, you will only be able to change your selection when you check in online.