We have a strange dearth of questions on paragliding, sky diving, and base-jumping, and hence no tag that I could find.
I don't think it makes sense to have a tag for each of these and possible others that I don't know about. (What's the name for sailing in the air over water behind a motor boat? But that should probably be a subset of water skiing.) I thought of free-falling, but in free-fall one does not encounter air resistance, so that tag wouldn't work for these sports.