With Christmas and Hanukah right around the same time, it is going to make holiday travel even more difficult since that is when everybody and his brother wants to be gone. And this is true whether you are traveling by car or airplane.
They are saying that the perfect day to travel would be December twenty-fourth, Christmas Eve. By this time, most everyone else should be at their preferred destination, and travel ways should be clear.
The day after Christmas, the twenty-sixth, is thought to be worst day to travel. Many people will want to return home to work. Others may be traveling to see other family.