Stupid question but how do I change direction mid-air?

I've been enjoying the hell out of this game but find myself constantly dying online when I'm trying to recover but my character is facing the wrong way (I'm looking at you Chrome, Ike, and Inceraroar). When I try to move in the direction that I want to face all it does is just move them in that direction, but they're still facing the wrong way. Sorry if the question seems odd but I can try to clarify if needed.