5 Busiest Airports in the World by Flights Per Day

4. Denver International Airport

Daily Scheduled Outbound Flights: 821

The Denver International Airport is the fourth busiest airport in America in terms of daily flights. It was set up in 1995, making it a relatively younger airport. It consistently also ranks as the busiest airport in both the U.S. and the world in terms of passenger traffic. Denver International transports more than a million people each year to Las Vegas and Phoenix.