請問起邊度可以買到最平的機票去西班牙呀?

try and search at www.skyscanner.net, it shows all availabilties and fares of all airlines for your option, and then you can just simply purchase it on the Internet at the airline's official website.

Firstly, input your criteria, then start searching, once they show all options for you, then you double click on your ideal one, then it will bring you through to the airline's own official website. This is safe and reliable website, as me and my friends also have purchased the domestics tickets via this website.