Best way to travel between Russia, Kazan and Helsinki

A: Russia, Kazan

B: Helsinki

Travel Modes: Price; Distance; Duration; CO2

bus: $87.78; 2103.26 km; 44h 18mins; 63.1 kgs

train: $125.0; 2036.31 km; 28h 25mins; 107.92 kgs

flight: $173.0; 1621.36 km; 5h 47mins; 175.11 kgs

drive: $360.0; 1907.89 km; 26h 29mins; 244.21 kgs

Tranport	Distance	Time(hrs)	Cost(local)	Cost(usd)
Bus	2103.26 km	44h 18mins	65 EUR	87.78
Train	2036.31 km	28h 25mins	92 EUR	125.0
Flight	1621.36 km	5h 47mins	127 EUR	173.0
Drive	1907.89 km	26h 29mins	265 EUR	360.0

Take Bus from Kazan' to Shuja: Time: 14h 47mins Cost: 11 EUR; $ 13.5 - 16.5 USD CO2 Emission: 19.85 kgs
Take Bus from Shuya to Moscow: Time: 6h 31mins Cost: 7 EUR; $ 8.1 - 9.9 USD CO2 Emission: 9.15 kgs
Take Bus from Moscow to Sankt Peterburg: Time: 12h 32mins Cost: 21 EUR; $ 25.9 - 31.7 USD CO2 Emission: 22.24 kgs
Take Bus from Baltiyskaya to Kamppi: Time: 7h 23mins Cost: 26 EUR; $ 31.5 - 38.5 USD CO2 Emission: 11.86 kgs

Source: Rome2rio

Mode of travel comparision chart

The best and cheapest way to get from Russia, Kazan and Helsinki is to travel by bus, which will cost about 65 EUR or 79.20 USD.