Today is the busiest travel day of the year in the US as more than 50 million Americans head off for their Thanksgiving holidays. 48,000 flights are scheduled today, and the low-cost carrier Frontier is trying to differentiate itself from its rivals with an all-you-can-fly pass. Joining Julia to explain how it works is Frontier CEO Barry Biffle. Also on today's show: Stew Leonard's President/CEO Stew Leonard Jr.To learn more about how CNN protects listener privacy, visit cnn.com/privacy