busiest travel days of the year busiest travel days of the year busiest travel days of the year busiest travel days of the year peak holiday travel over 44 million people busiest travel days of the year busiest travel time of the year busiest travel days of the year busiest travel days of the year USA Today busiest travel days of the year busiest travel days of the year busiest travel days of the year busiest travel days of the year busiest travel days of the year busiest travel days of the year busiest travel days of the year heaviest travel time of the year busiest travel days of the year busiest travel days of the year busiest travel days of the year Thanksgiving is among the busiest travel days busiest travel times of the year busiest travel days of the year busiest travel times of the year busiest day of the year for traveling