Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Blountville to Fayetteville, North Carolina as you normally would.
TRI stands for Blountville Tri Cities TN/VA Airport, while FAY stands for Fayetteville Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.