If you consider flying with Oneworld member Iberia through their main hub in Madrid you may take advantage of their current newest promotion (Called Hola Madrid) offering a free stopover in the capital city of Spain for up to 10 days (9 nights)! Firstly note that the booking is only available through the special Iberia link below where you can search for your route and then easily choose the number of days for your stop-over in Madrid. Apart from this free stop-over in Madrid, Iberia offers another benefit while in Spain such as a free two-day public transport card, discounts on selected hotels, restaurants, and museums, an additional 25% discount on intra-Spain and Portugal flights with Iberia/Iberia Express and more..!
The Iberia Hola Madrid stop-over programme has specific conditions (you can read complete details when you click on the above link) and we list only the most important ones: The stopover should work on most of the routes when you book connecting flights with Iberia through Madrid however you will only find out the availability once you try to make your booking (works for single as well as return tickets). You can choose whether the stopover will be on your outbound or return flight however it is not possible to book the multi-stop for both legs.
On flights lasting more than 6 hours, the operating company must be Iberia, except to/from Mexico, the United States or Puerto Rico, which can be Iberia, American Airlines or British Airways. On flights of less than 6 hours, the operating company must be Iberia, Iberia Express, Vueling, Air Nostrum, British Airways or Aer Lingus.
If you already have your ticket and want to include a stopover in Madrid, the first thing to do is check with Iberia/ s Customer Service Centre to find out whether the fare you purchased allows this change.