Cincinnati/Northern Kentucky International Airport

The pros - it's a nicer/newer/cleaner airport, with terminals that are easy to get to and easy to find. They have a pretty decent food selection, too, and quite a few Delta flights. Parking is convenient and relatively cheap, as well, which really helps.
The cons - the flights are typically really expensive, and it hardly ever flies direct to your destination (big delta hub cities, such as Detroit, Atlanta, Orlando, etc. not included). Given that is the most crucial part of any airport... this one is pretty bad.

Pro tip - Uber and Lyft both now operate to CVG, and in a lot of cases it can be cheaper than paying for parking

Nice airport. Easy to navigate due to it's smaller size. Flights tend to be pricey and you normally have a layover somewhere. However, if you do enough price hunting, you can find some bang for your buck usually.