I just want to add that my kilts have so much material that I literally don't feel the kilt against my legs most of the time. So when a breeze lifts it up, the kilt is up pretty high before I notice that anything's amiss.

Also, I suspect that when the wind hits a kilt just right, it acts like a large sail -- like a spinnaker, and catches the wind and billows in the only direction it can -- up.

I'm not in windy areas often enough to get a lot of practice dealing with the kilts blowing up, but I've read and noted the tips listed in another thread on this subject.