I also have dreams that I can fly similarly to Superman, but it's like I'm just learning and I can't control it the best. If I suddenly need to increase speed or slow down drastically, I can't do it most of the time.
A couple of nights ago I was dreaming that I was hanging off of the edge of a cliff holding onto a tree. There were enough trees that I could get to safety, but after a few of stable trees, there were loose trees that couldn't support me. I just hung there on the last stable tree trying to figure out what to do.
Finally it dawned on me that I could fly. Duh! Made it to land safely lol.