As usual with any generic question about dreams, there are several possibilities of meaning, and central images or processes usually have 2 or more complementary & roughly opposite meanings. Flying is usually a process, and the experience of your dream ego in flying is showing some significant aspects of the ways you deal with your reality in what could be considered a "God's-eye view' That is the Higher Power that designs & directs your dreams as emerging sleep experience-movies intends for you to observe yourself in action with special attention to the partial images of yourself that are accentuated in the scene(s).
On one side, you may be transcending ordinary earthly&practical issues, gaining a broader & more inspirational view of your possibilities, or traveling out-of-body to achieve inner connections with people and potentials that are far away when you're awake. On the other side, you may also be avoiding outer-world challenges to live an inner reality of spiritual inspiration, exploring inner worlds while leaving the world around you untouched and unresponsive to your presence.
But this introduction gives only unrelated generalizations until it is paired with the actual contents of specific dreams, in which the plotlines and scene-sequences can provide far more specific meanings about the ways your mind uses its spiritual capacities to master, sublimate, or stimulate your personal surrounding and promote your spiritual growth and/or to toy with alternative states of consciousness while withdrawing from the context in which you might otherwise be making progress with and for the significant people in your world.
It's likely to be valuable to consider both applications of the imagery to the current events and lifestyle choices that are triggering these dreams, but essential to keep all the scenes and details in relation to each other--and if you're also a real pilot, there's another level of interpretation as well. So if you really want to understand how your generic question can become valuable for YOURSELF in relation to your present place in life, you should provide a recent example dream or two, with likely triggering events or thoughts&feelings and precise details that could be weighed in the context of your waking experience and consciousness.