It’s generally more expensive to depart on a Sunday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.
Due to multiple factors, expect to potentially pay more when booking in March. For low rates, August can be a great choice for travel to Cincinnati. Flights to Cincinnati from Knoxville in August are about $309 on average during August, but can be found for as low as $177.
It’s typically best to fly out from Knoxville to Cincinnati at noon. Doing so could potentially save you 29% on the flight price compared to flying in the morning, which is usually more expensive.