Best way to travel between

Helsinki
Riga
Travel Modes
Price
Distance
Duration
CO2
bus
$55.0
529.24 km
11h 43mins
15.88 kgs
 
drive
$85.0
413.92 km
6h 42mins
52.98 kgs
 
flight
$176.0
400.86 km
4h 22mins
43.29 kgs
 
N/A
 
 
 
 
 
Tranport Distance Time(hrs) Cost(local) Cost(usd)
Bus 529.24 km 11h 43mins 28 LVL 55.0
Drive 413.92 km 6h 42mins 44 LVL 85.0
Flight 400.86 km 4h 22mins 91 LVL 176.0
Take Ferry from Helsinki to Tallinn
Time: 2h 1mins Cost: 18 LVL; $ 31.5 - 38.5 USD CO2 Emission: 10.87 kgs
Take Bus from Reisisadam D-terminal to Autobussijaam
Time: 8mins Cost: 1 LVL; $ 1.8 - 2.2 USD CO2 Emission: 0.08 kgs
Take Bus from Tallinna bussijaam to Valga bussijaam
Time: 4h 8mins Cost: 8 LVL; $ 13.5 - 16.5 USD CO2 Emission: 7.84 kgs
Take Bus from Valka to Riga
Time: 3h 44mins Cost: 3 LVL; $ 4.5 - 5.5 USD CO2 Emission: 5.41 kgs
Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Helsinki and Riga is to travel by bus, which will cost about 28 LVL or 49.50 USD.