When flying from Appleton to New Bern, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
ATW stands for Appleton Intl Airport, while EWN stands for New Bern Simmons Nott 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.