Flight (フライト, Furaito) is the ability in which involves flying and moving through the air.
This ability itself relates to the ability to fly without external assistance. Flight maybe part of Death God Powers, as both Death and Asura show this ability. Some characters, like Maka Albarn and Gopher can fly due to their special Grigori soul.
Flight itself can be learnt, though in Black☆Star's case, he trained and learn it after being exposed to the low gravity on the Moon. Some Magic users, such as Maba, can fly via magic. Ponera displays this ability as well, though it is unknown if she can fly via magic or a Grigori soul.