Got a good question! I'll be traveling in late Jan. boarding plane in Col. OH sure to be cold. But will be traveling to Miami. You can only have so much luggage, so what do I do with my heavy clothes that I would be wearing in Col. and what do you wear on a plane with such a sharp degree of weather change?
I also come from a cold climate and crusie durning the winter. I just layer clothing with a light jacket. It really is not warm enough to be outside for any period of time but it is just fine for the minuet from house to car or other transportation, then car to airport terminal. If driving to airport I will leave a heaver jacket in the car just to be warm after cruise when car will be fridget.
I wear silk long underwear under my light weight pants and tops. I often get cold on planes, but take it off as soon as we hit the warm weather airport.
We usually stuff our jackets in the outside pocket of our suitcases when we check in our bags at our home airport.
I take sandals, a bathing suit, a clean shirt and some toiletries in my carry on. If my luggage doesn't get to my cabin before dinner, I'm a lot happier if I've been at the pool and can freshen up before dinner.