Low cost/Budget airlines have revolutionized travel, but at what price? Since their appearing in 21st century, low cost airlines have revolutionized the way people travel around the world. However, what price do we pay for that new travelling style? First of all, the most important benefit of low cost airlines is obviously their price. Comparing with other traditional airlines this cost could be twice or three times cheaper. As a result, this main feature makes more reachable travelling those people who could not afford that prohibited costs, especially youngest. Now, they can be abroad on vacation for a reasonable price or, what is more, buy a last minute journey in an ”online auction” for a laughing amount of money. On the other hand, a relevant disadvantage in this kind of airlines is the luggage. Mainly, the only suitcase which is covered in the flight cost is a hand luggage. This must be limited in weight and dimensions to be allowed on board. In any case, the passenger is forced to pay extra money for it. Another drawback is the uncomfortability. This type of business has to choose between being economically competitive and giving a good service. Obviously, if their flights are the cheapest, the comfort in their airplanes is visibly lacking: reduced spaces, uncomfortable seats, dirty paths, etc. Finally, other downside as a consequence of business line mentioned is the insecurity. That is noticeable on the high possibility of running out of petrol. To sum up, low cost airlines have innovated in the way as people travel as the resources are invested. On the whole, there are certain decisions which are to be put on a balance before travelling with a low cost airline, if the priority was the security, low cost airlines would not be the option.