holiday travel season biggest travel times worst travel days of the year busiest travel days of the year. are especially busy this time of year busiest times for travel one of the busiest travel days busiest travel days of the year USA Today says busy travel periods Top 10 Worst Travel Days of the Year booking rewards travel on the worst travel days worst travel days of the year this time of year busiest times of the year to fly busiest times to travel are especially busy USA Today one of the busiest travel days USA Today says worst travel days busiest times of the year to fly also agree worst travel days of the year