It's tempting to ask what you mean by backward, but unnecessary. The answer is no. Backward time travel is not possible under any circumstances.
Superman - Earth-Two - was created in 1969.
It all depends on the speed of whatever you are flying with. And how close your destination is to you.
A lot of people used to think that Superman flies because of his jumping strength, but anyone who's seen the movies understands that this cannot be true. He changes directions while flying, which is pretty amazing, when you think about it. It's almost as if he has an invisible propulsion system. Also, clearly, he can fly in outer-space, and he doesn't require oxygen to breathe. I think there is virtually no limit or how high Super can fly -- or for that matter -- how deep he can swim!
Adventures of Superman - 1952 Superman on Earth 1-1 was released on: USA: 19 September 1952
Superman's dad brought him to Earth when he was a baby because the planet Krypton was about to be destroyed. Superman was then adopted by a couple in Kansas.
Superman - 1988 The Last Time I Saw Earth It's Superman 1-13 was released on: USA: 1988
Probably not because you're still in the earth's atmosphere but I'm not sure
earth
Superman is more famous, in fact the Superman symbol is the second most recognizable symbol on Earth.
Send superman
Superman
Currently (as of 2014) Superman and most DC characters of the "new 52" reside on what is called Prime-Earth, formerly called Earth-0 and New Earth, and is set in present time. Superman usually patrols the cit of Metropolis.