A FlyerTalker posted this link
http://www.ar.despegar.com/paginas/b...uedavuelos.asp
It's all in Spanish ... and I don't speak Spanish.
It looks like they have cheap fares, however, I don't know if any for AA. And if they are a consolidator. May be somebody who knows Spanish could look in to this. I apologize, if the link is not what I think..