Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Jakarta to Riga as you normally would.
If you book a flight to Riga from Jakarta, you will be flying to Riga Intl, which is the city’s only airport. Riga Intl (RIX) is located 8.7 km from the centre of Riga. There are 0 flights from Jakarta to Riga Intl per day from 0 different airlines.