Why are flights so much cheaper in Europe than in the U.S.?

BERLIN — In Europe, simply getting to the airport is often more expensive than the flight itself. Many flights here can be astonishingly cheap, and not only for those who spend hours searching the Internet for the best deals. On a recent day in September, travelers could book $17 flights from London to Berlin on 14 different days in October […]

Source: http://www.washingtonpost.com/blogs/worldviews/wp/2017/10/12/why-are-flights-so-much-cheaper-in-europe-than-in-the-u-s/