"Yes, wingspan will affect flight, however there will be a point where the size of the wingspan will create too much weight and drag to be effective. For a glider, which a paper airplane is the more lift the glider has the longer it can fly. However, you must keep the weight and drag in check to avoid flight failure."

Do bigger planes fly farther?

Yes, the more air that can get under the wings the longer the airplane will stay airborne increasing the chances it will fly farther.

How does wing size affect the distance a paper airplane can travel?

A paper plane with small wings travels quickly. ... The size and shape of its wings, particularly the main wing, affects its performance. A lightweight plane with large wings glides well but travels slowly, while heavier planes with smaller wings travel more quickly and cover larger distances.