Lana flying.
Notable users:

Flight is the ability allowing someone to defy gravity, propelling themselves through air and space without the use of a Legion Flight Ring, Bio-Ring or a Mystic Scarab or any other form of support.

In the case of the Kryptonian people, they generate their own gravity field, distorting and syphoning physical force, which they use to move through air and space in any direction and at great speeds. The distortions in gravity and fundamental forces around them can be enough to break the sound barrier and cause sonic booms and gusts of powerful, hurricane-like force winds.

Main article: Artificial Flight

Those who can't fly naturally and rely on an outside source to do so, most use a Power Ring.