Fog at Chicago Midway resulted in numerous cancellations on Saturday, which is now having a knock-on effect throughout the Southwest's network.
Harsh weather disrupted travel across the United States this Christmas Eve. Passengers trying to travel for the holidays were met with severe winter weather and fog, causing hundreds of delays and cancellations on one of the year's busiest travel days. However, while the chaos calmed for most airlines as they adjusted to the demand and weather, this can not be said for Southwest Airlines, as the Dallas-based carrier canceled the most flights among US carriers this Christmas.