It was a long time ago. [She smiles teasingly at him. Might be thinking about kissing him too and they are heading right back to the ground now. See? Solid.]
Some. Ororo can manipulate the weather and can use air currents to carry her. Jean could use her telekinesis on herself to lift up same with Erik's magnetism. There was a guy named Angel who wasn't actually an X-Man, but he had wings like, you know, an angel. Lots of feathers with that one. Some mutants just fly though.