On national flights, certainly. While still legally a minor, 16 year olds are considered to be able to fend for themselves in certain situations. I would personally suggest that you confine this to national flights, or flights to well-organized foreign locations, but I don't believe that suggestion is reflected in law.
For US airlines it is 16 years old.
you can be any age to be on a plane. to be on a plane alone and not an adult you need paperwork and stuff saying you are an unaccompanied minor
Depends on which airlines you wish to fly with. Check their website - there usually is a section for unaccompanied minors.
Yes children under the age of 18 can travel by themselves. But check with the airline to see their rules on their unaccompanied minor service.
He wants to fly the plane. or He wants to fly a plane.
No, he can fly in a plane but is not a pilot.
Passengers fly on a plane.
can fly plane with one lung
Both - you fly it in the air, but you drive it on the ground.
Fly a Plane Into Me was created on 2010-10-08.
A plane would mostly fly in stratosphere.
You have spelled it correctly, plane, a man-made vehicle that can fly.