If you want to get around Cincy on wheels and didn’t bring some of your own, this city will not, unfortunately, be very accommodating to your needs: hailing a cab is not allowed.  You can, however, go to a cab stand or call Taxi companies in Cincinnati which include:

Although these taxi services are assembled at a baggage claim desk at the airport, consider that fare from Cincinnati/Northern Kentucky International to downtown is over thirty bucks and that a rental car may be a much better bargain if you want to move around by car for any stay longer than a few days. To check the taxi fare in advance, try using the Cincinnati Taxi Fare Finder.

All the major rental car companies are available in town and at the airstrip—Alamo, Hertz, Avis, National, Budget, Dollar, etc.  Go here for website and phone info to make advance reservations.

Going to and fro by cab in Cincinnati is not easy, and though rental car is more simple, perhaps your most affordable and sensible choice would be public transit .