CivMetrics ranked the cheapest and most expensive airports in the U.S. based on average flight costs.
Among the busiest airports, Ted Stevens Anchorage International in Alaska was the most expensive, with an average flight price of $540.
On the other end, St. Pete Clearwater International in Florida, where flight costs average around $147, ranked as the cheapest airport.
Washington Dulles International Airport in Dulles, Virginia, came in third place.
The Ted Stevens International Airport is a critical supply chain hub.