Centennial Airport, in Denver, is one of the largest general aviation hubs in America. There are also some commercial operations here, such as Key Lime air. I think it'd be worth adding, considering some people like to have smaller, charter sorta airlines.
- Airport Name: Centennial Airport
- ICAO Code: KAPA
- IATA Code: APA
- Passenger Numbers (Estimated figures are allowed): 1 Million Anually (3rd Largest General Aviation Hub)
- Coordinates: 39°34′12″N 104°50′58″W
- Runway length: 10,001
- Country: United States
- State/Region: Colorado
Also Considering Rocky Mtn. Metropolitan was added, I feel like Centennial should be in there.