The International Air Transport Association recently released its annual World Airport Traffic report, detailing airport performance by cargo and passenger numbers. So where is the world's busiest airport? The answer may surprise you.
20. Atatürk International Airport in Turkey (44,992,420 passengers in 2012)
19. Madrid Barajas Airport (45,175,501 passengers)
18. Guangzhou Baiyun International Airport in China (48,548,430 passengers)
17. John F. Kennedy International Airport in New York (49,293,587 passengers)