No one uses Strange’s flight mode.
The best reason being is that it prevents you from falling to the ground when you have nothing on the ground to cover you. In this case, just do Fly -> Y Grace -> Flames -> Teleport. Bam, much safer decent. You can do that without flying, but if you already used another special move, you can fly to do this series.
The other reason being is you can get high/low mixups going. Call a pinning assist, TK Fly, hold down-foward. Then either do a bunch of overheads or just fall with j.S or unfly, and land instantly and do cr.H. Bam, high/lows.