Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Jakarta to Crete as you normally would.
Jakarta Soekarno-Hatta Intl Airport is CGK and Heraklion N. Kazantzakis Apt. Airport is HER. 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. This flight route has multiple associated airports, so we think it might be helpful to learn the name and codes of them as well. They are Chania Souda Airport (CHQ), Sitia Airport (JSH).