Finland is a signatory to the Schengen Agreement.
Border restrictions are usually not required between nations that have signed and implemented the pact. This covers the majority of the European Union as well as a few additional nations.
Before boarding foreign planes or boats, passengers’ identities are typically checked. Temporary border restrictions are sometimes used at land boundaries.
A visa issued to any Schengen member is also valid in all other countries that have signed and implemented the treaty.