7. Beijing Capital International Airport (Beijing, China)
Beijing Capital International Airport (PEK) has historically been one of the top five busiest airports in the world, ranking number 2 in 2019. COVID took a massive toll on PEK’s traffic, which was likely due to the lack of business travel. This caused the number of passengers to drop 65% in 2020 with only 34.5 million travelers, making PEK the 7th busiest airport in the world.