Yes, Charlotte Douglas International Airport (CLT) is exceptionally large and is currently ranked as the fifth or sixth busiest airport in the world by aircraft movements as of 2026. It serves as the second-largest hub for American Airlines, trailing only Dallas/Fort Worth. In terms of physical scale, the airport has undergone massive "Destination CLT" expansions over the last few years, including the completion of the new Runway 18C/36C and a significantly expanded Main Terminal Lobby. CLT handles over 53 million passengers annually, and its layout features a single massive terminal building with five concourses (A through E). While its "footprint" might seem more compact than sprawling airports like Denver or Atlanta, its operational density is enormous. For travelers, "big" often translates to long walking distances; Concourse E, for example, is famous for its length, often requiring 15 minutes to traverse. The airport functions as a critical "fortress hub," meaning it is a major gateway for both domestic connections and increasing international flights to Europe and the Caribbean.