Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Bandung to Tokyo as you normally would.
Bandung Husein Sastranegara (BDO), located 4.4 km from the city centre, is the airport you fly out of when you book flights from Bandung to Tokyo. 0 airlines have flights from Husein Sastranegara to Tokyo on a regular basis. Booking flights from Bandung Husein Sastranegara to Tokyo should not be difficult; the airport handles an average of 0 outbound flights to Tokyo per day.
This is defined as Bandung Husein Sastranegara Airport (BDO) and Tokyo Narita Airport (NRT). Codes like Tokyo Narita Airport are often used to just call airports uniquely. Tokyo Haneda Airport (HND) are other airports near this flight route and their unique identifiers/IATA codes.