When flying from Cebu to Coimbatore, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
For a flight from Cebu to Coimbatore, you will be flying into Peelamedu. Coimbatore Peelamedu (CJB) is just 8.6 km from the center of the city.
This is defined as Cebu City Mactan Intl Airport (CEB) and Coimbatore Peelamedu Airport (CJB). Codes like Coimbatore Peelamedu Airport are often used to just call airports uniquely.