Originally Posted by
RipCityFlyer
Take-off is by far the most inefficient part of any flight, so the simple answer is, the longer the better, regardless of type.
It's fairly straightforward math, just like MPG in a car.
BZZZZZZZ.......
Nope. You have to use fuel to carry fuel for a long flight. There is some intermediate distance which is most efficient, depending on aircraft type.