Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Surabaya to Greece as you normally would.
For a flight from Surabaya to Greece, you will be flying from Juanda. Surabaya Juanda (SUB) is just 15.0 km from the centre of the city.
SUB stands for Surabaya Juanda Airport, while ATH stands for Athens Eleftherios V. 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. Heraklion N. Kazantzakis Apt. Airport (HER), Thessaloniki Makedonia Airport (SKG), Rhodes Diagoras Airport (RHO), Corfu Ioannis Kapodistrias Airport (CFU), Thera Santorini Airport (JTR) are other airports near this flight route and their unique identifiers/IATA codes.