Thanks for the feedback guys.
My biggest concern has been the amount of inspection to expect. I was always planning on getting a clear storage box that would fit as carry-on, preferably under the seat. Most of the ones I've used are strong enough to put up with some banging and as long as I've done a good job in anchoring the models inside everything should be OK.
Once packed, I was worried that the whole thing would have to be opened and probably fondled. It sounds like that will happen even though the models can be seen through the lid and sides. And, of course, there's the issue of PE, metal figures, etc..
These issues will certainly impact what I take and what I may build in the next few months. At this point a 54mm figure probably makes more sense than an HMS Victory.
Rick