Tuesday, January 7
(Undated) -- The bitter cold is causing another turbulent day for travelers. Flight cancellations and delays are stacking up as much of the nation stays in the deep freeze. More than 300 flights have been scrapped today at Chicago's O'Hare Airport. More than 23-hundred flights are cancelled so far today, and more than five-thousand flights have been delayed. If you're planning on flying today, be sure to check with your air carrier before heading to the airport.