The airports Council International, based in Montreal, has an**unced which of the worldâ??s airports were the most bustling in 2015. The airports Council International, based in Montreal, has an**unced which of the worldâ??s airports were the most bustling in 2015.For the 19th year in a row, Hartsfield-Jackson Atlanta International Airport claimed the number 1 spot. Last year, more than 100 million travelers passed through its terminals and concourses, a 5.1% increase over 2014. The Beijing Capital International Airport also saw more traffic, up 4.4% to roughly 90 million passengers, landing it in 2nd place. Dubai International Air