Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Salisbury, Maryland to Cincinnati as you normally would.
These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Salisbury-Ocean City Airport to Cincinnati Cinci./N. Kentucky Airport flight would often be abbreviated as a SBY to CVG flight.