trucosviajeros.com
What is the cheapest way to go to Madrid airport? (...and how to go to the airport at night)
If you asked me 6 or 7 years ago, I would have told you that the cheapest way to go to the airport was the underground (Metro). But the prices of public transport to Madrid Airport have changed a lot and the answer is not that easy. So I've researched for you the best and cheapest options to go