Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Jakarta to The Bahamas as you normally would.
CGK stands for Jakarta Soekarno-Hatta Intl Airport, while NAS stands for Nassau Intl 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. Freeport Grand Bahama Intl Airport (FPO), Georgetown Exuma Intl Airport (GGT), Gregory Town North Eleuthera Airport (ELH), Marsh Harbour Airport (MHH), Port Royal Bimini Airport (BIM) are other airports near this flight route and their unique identifiers/IATA codes.