About 15 hours in car-time. A little shorter in plane time. It depends.
Google Maps estimates the driving time as 3 hours and 32 minutes.
Google Maps estimates the driving time as 1 hour and 57 minutes.
The driving time is about 2 hours depending in traffic.
It is 104 miles according to Google Maps.
The driving distance between Cincinnati, OH and Dayton, OH is approximately 50 miles. The driving time would be approximately 55 minutes if you were to travel non-stop in good driving conditions. (The driving time does not take into consideration conditions which may extend trip time such as weather, road work, border crossings and rush hour traffic in urban areas.)
Google Maps estimates the driving time as 2 hours and 11 minutes.
Google Maps estiimates the driving time as 6 hours and 21 miinutes.
Google Maps estimates the driving time as 4 hours and 24 minutes.
MapQuest estimates the driving time as 16 hours and 7 minutes.
Google Maps estimates the driving time 29 hours.
Google Maps estimates the driving time as 16 hours and 10 minutes
Google Maps estimates the driving time as 6 hours and 26 minutes.