Fortunately we did not miss our connecting flight in Little Rock to continue on to Las Vegas and then Tucson so our trek to Tucson was just a little bit delayed. I was prepared for delays with plenty of reading material and healthy food (fruit, veggies, protein bar, nuts). If we’d been delayed much in Las Vegas, I would have taken the opportunity to charge my electronics in the airport. Comfortable clothes - with layers - is important too. I appreciated that I had been able to get my coat in my checked luggage so I was not lugging very much through the airport between planes. Is there anything unique about those things for winter? Maybe not. I supposed I’ve just had more lengthy delays in winter and so I think about them more when I fly during the winter months.