Sherry,
I have traveled with my Bernina. I bought a Tutto "sewing machine on wheels" case. It packed and rolled very easily.
The first time, it all went through X-ray at security with no problem. The next time(s) I had to unpack the sewing machine so they could X-ray the bag again without the machine in it. A definite hassle.
When you get on the plane, you need to be able to lift the sewing machine above your head (or get someone else to do it for you) to put in the overhead bin.
If I'm traveling without DH, I think I'll take my 11 lb. Janome next time.
Good luck,
Sharon in Colorado