Cincinnati/Northern Kentucky International Airport (CVG) is a major commercial airport serving the Greater Cincinnati metropolitan area, physically located in Hebron, Boone County, Kentucky, just south of the Ohio River. Despite serving the city of Cincinnati, Ohio, the airport lies entirely within the Commonwealth of Kentucky, which gives it its dual-city designation. The airport was a major hub for Delta Air Lines and its predecessor Comair for many years, making it one of the busiest airports in the Midwest during the late 1990s and 2000s. After Delta significantly reduced operations at CVG following the 2008 financial crisis, the airport repositioned itself and has seen renewed growth with carriers including Amazon Air, which established a major hub there in 2021. CVG is operated by the Kenton County Airport Board and serves both passenger and substantial cargo traffic. Its Amazon Air hub, known as Amazon Air Hub, has become one of the busiest cargo operations in the country, reinforcing CVG's role as a key logistics gateway.