Air Madrid is having inimaginable trouble for the last year.
Delayed flights for over 20-40 hours, incredible complaints, people raving into the runway because they did not get a reply at the airport, pickets, routes that are direct from Argentina/Chile/Ecuador to Spain, stopping in Fortaleza and Canary Islands.... it´s on the papers every single day.

Not that Aerolíneas Argentinas is any better...but just be warned that you may face a bad situation.

Today, in the largest newspaper in Argentina a piece of news informed that they are under investigation in Spain for these issues and could have their license suspended.