Orbitz.com (www.orbitz.com) today released the Insider Index of the busiest air­ports for Thanksgiving, as well as time-saving tips on nav­i­gat­ing bustling air­ports dur­ing the hol­i­day sea­son. The Index also reveals the least busy air­ports, help­ing trav­el­ers who have not yet booked their air­line tick­ets make an informed deci­sion when choos­ing their airports.