I have only scanned over the replies to this post, so forgive me if I repeat anyone-If I repeat count it as confirmation of a great tip!
Hubby and I are well traveled-been to Europe, Middle east and beyond so speaking from experience here.
Flight check in will be longer than non cf travelers, be prepared and be early. Get a letter from your doc listing ALL medications, Vest, Compressor and nebs, syringes if you use them, ect. If there are pressing or rude questions at check in scanning-present the letters. This has helped me more than once.
It can also help if you lose a medication to bring that list to a doctor in the country you are visiting for replacement ect.
The Hillrom 104 vest is the BEST for travel. Lightweight, compact and compatible electrically. I have blown compressors, hairdryers, ect on many a trip even with the "right" power converters. It is not fun-and if it happens to the Vest it is expensive "not fun". If you don't have this upgrade vest yet, I'd seriously consider it. It only took me a few weeks to get mine.
For travel I have 2 compressors-invacare stratos portable (as fast as a regular neb) and an ionic neb. I love both. Bring extra inhalers too-for an on the go boost if you need it.
I bring sanitizing wipes on the plane, and pack purell in my luggage. Use it constantly. I do airborne the days leading up to my trip, and once every other day during my trip.
For me, I find that if I am stressed on a vaca, I get sick. So being prepared helps. Knowing my surroundings, doing my 'homework' ahead of time. And relax!!!
Packing simply helps to minimize the stress of travel. A couple outfits-comfy shoes-simple clothes means less washing to do, less re-packing and less stress. Enjoy your trip-getting sick or stressed over it is not worth it!