i also chose to fly SW for my upcoming trip to FL as 1) it is easier to cancel or change and 2) its a direct flight so no connection in PHL so less people particularly internatioally flights i will come into contact with despite my Elite status on AA would likely have gotten me in 1st class with less people flying
My understanding of why flu season is in the winter is that because people stay inside and are concentrated with windows closed and ventilation more limited. You go out and ski and with cold and wind you have much less chance of being in contact of germs and virus.
from google
Do cold air kill germs?
Cold air doesn't kill germs but it can keep them from spreading. Cold weather restricts the growth of bacteria. At 32 degrees Fahrenheit or lower, you will get virtually all bacteria or viruses to be inactive.
So go skiing but be careful in the Lodge is my take. Its a great time of the year to have lunch outside
if You French Fry when you should Pizza you are going to have a bad time