7. Heathrow Airport
Number of passengers: 75,715,474
If you were wondering when would Heathrow Airport show up on our list of biggest airports in the world, well your wait is over. Heathrow Airport occupies the prestigious 7th spot on our list because it served over 75 million people last year. To be honest, that number (if not more) is to be expected from the major international airport in London, United Kingdom.
Milosz_M/Shutterstock.com
