The option to cancel your ticket or get a refund depends on the fare and whether or not you purchased the “Flexible Ticket” option as an extra when you booked your flight. Fares subject to restrictions do not allow refunds or changes, or if they do there is a penalty fee.
If you bought your ticket on iberia.com, you can check the refund terms and conditions in Manage your booking or call our Booking offices. And if you bought it through an agency, you should contact them.

Important: Management fees are non-refundable unless you request a refund due to a delay, flight cancellation and/or flexible booking in markets within the European Union.