Frankfurt Hahn International (HHN), Germany
First things first, HHN isn’t actually located in Frankfurt… it’s a mere 75 miles away. That’s a 1.5 hour drive or 2 hour bus ride, in case you were wondering. Better yet, the main Frankfurt airport is only 7 miles from the city center.
Of course although HHN is further away, it’s also cheaper to fly through. But be warned: It’s bleak, lacking amenities, and generally unwelcoming. The seating is horridly uncomfortable too.