Flight is a technique used by someone in order to levitate off the ground and fly.
There are multiple ways that allows users to fly. One way is for the user to concentrate and manipulate their energy to the lower section of their body in order to levitate off the ground, although this is rather difficult and requires training physically and mentally.
Another way to fly is if the user was born with/has wings that allow them to fly.
When a user without wings flies they are commonly surrounded in a white aura of energy although this varies depending on the user.