So you've already done all of your summer traveling and are looking ahead to Fall or Holiday travel! Well, where do you go? Tripadvisor has released their seasonal travel index and are ready to reveal where American's are likely to travel over the Fall. Regarding international destinations? Cancun and Paris France are the most popular upcoming vacation destinations. What's the most popular in the U.S.? Drumroll: Las Vegas Nevada! followed by NYC and Orlando!