Business class Miami to Helsinki with Lufthansa for 2350$, 1 stop in Munich or Frankfurt. Short stopover in Germany is allowed for free. Flights available end of January 2019 until June.
Below an Example with a short stopover:
FROM THE UNITED STATES - PERMITTED TUE THROUGH FRI ON EACH TRANSATLANTIC SECTOR. TO THE UNITED STATES - PERMITTED SUN THROUGH THU ON EACH TRANSATLANTIC SECTOR.
TICKETS MUST BE ISSUED ON/BEFORE 13AUG 18.