When flying from Jakarta to Venezuela, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Jakarta Soekarno-Hatta Intl Airport to Caracas Simon Bolivar Airport flight would often be abbreviated as a CGK to CCS flight. Maracaibo La Chinita Airport (MAR), Valencia Airport (VLN), Porlamar DelCaribe Marino Airport (PMV), Barcelona Gen J A Anzoategui Airport (BLA), Barquisimeto Airport (BRM) are other airports near this flight route and their unique identifiers/IATA codes.