U.S. winter blast impacts post-Thanksgiving travel

Travel Disruptions - Winter weather caused significant disruptions at airports and on roads in the Midwest [1] - More than 1,000 flights were canceled at Chicago's O'Hare airport after more than 8 inches (approximately 20 cm) of snow [2] - Icy conditions led to several accidents in Iowa involving cars and semi-trucks [1] - A Delta plane slid off the runway in De Moines [1] Travel Volume - More than 3 million people are expected to pass through TSA, potentially setting records [2] Safety and Security - No injuries were reported after a plane slid off the runway in Illinois [1]