How does superman fly?

Lex Luthor once theorized that Superman had to stem from a gigantic planet with enormous gravity, where his species had developed natural anti-gravity organs to be able to function; on Earth, this would allow him to control his own gravimetric field in order to fly. read more

In short, Superman flies because he wills himself to do so, and he can fly as fast as he wants. I like the answer because Superman is more about will-to-power than scientific justification. It's funny that readers seem to forget that science is a growing body of knowledge, and while it's impossible to do something today, it may very well be possible in the future. read more

"Earth has low gravity for Kryptonians" is a fine explanation for the Golden Age Superman, who could simply jump very far. It breaks down for a character that can impulsively change direction mid-flight. I like to think the modern Superman has telekinetic powers, and can levitate himself anywhere. read more

When Superman was rebooted in 1986, his power of flight was changed to tie into his new dependence on solar radiation. The energy in his body produces an invisible bio-electric aura around him, which also adds to his durability. read more