Armed with this information, what should you do?
Miller suggested a couple of things.
"If you live in a larger metro area, there are a lot of cases where one airport is doing a lot better," she said. "So it's important to do a lot of research and see which one works."
"Also, if you must connect, consider cost of a delay, and what is the percentage of canceled flights though connecting airport," she continued. "Then consider if that's a risk you're willing to take. If you are delayed, there are things people can do to mitigate the costs, like going to airport lounges that have free food and showers."
Balancing the reduced cost of a layover itinerary versus a nonstop is tricky, and statistically you're still probably going to arrive on time. But these months can be treacherous, and even though in some places it might not really seem like winter, not every airport is created equal. Stock up on snacks accordingly.
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