When flying from Cebu to Murcia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Cebu City Mactan Intl Airport is CEB and Alicante Airport is ALC. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. Corvera Intl Airport (RMU) are other airports near this flight route and their unique identifiers/IATA codes.