When flying from Cebu to Belfast, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Great question - CEB to BFS just means Cebu City Mactan Intl Airport to Belfast Intl Airport. Now you’ll know what these unique codes when you look for flights! Belfast City Airport (BHD), Glasgow Prestwick Airport (PIK), Londonderry Eglinton Airport (LDY), Isle of Islay Glenegedale Airport (ILY), Campbeltown Machrihanish Airport (CAL) are other airports near this flight route and their unique identifiers/IATA codes.