Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Bali to Tallinn as you normally would.
Related info for your journey
Useful info, stats and facts about Bali to Tallinn flights.
If you book a flight to Tallinn from Bali, you will be flying to Ulemiste, which is the city’s only airport. Tallinn Ulemiste (TLL) is located 3.4 km from the centre of Tallinn.
These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Denpasar Bali Ngurah Rai Airport to Tallinn Ulemiste Airport flight would often be abbreviated as a DPS to TLL flight.