Once CVG was a busy airport! They used to be a Delta hub and a regional hub for Comair with direct flights all over the US and had over 20M passengers per year in the early 2000's (and also the highest average ticket price for any airport in the world). I used to drive to Dayton, Columbus, Indy, or Louisville, then fly through CVG because it would save me $150/ticket.

Now CVG serves 8-9M passengers. Ticket prices are in line, but there aren't nearly as many direct options and the airport has a lot of unused space in that airport and not all that many restaurant options.

It is now the 6th largest air cargo airport in North America.