CheapOAir - http://www.cheapoair.com
Get cheap airline tickets to top business and leisure destination. Book now and save more on flights for your next vacation!
Vuelos Baratos - http://www.vuelosbaratos.es
Major Spanish flight and hotel comparison engine. Offers a great choice of airfares from many online travel agencies and hundreds of national and low cost airlines. Accessible in English, Spanish, Basque and Catalan.