The cheapest flight to Helsinki you can get by boooking 55 days before departure.
The most popular airlines on the route Sofia - Helsinki: Turkish Airlines (TK), Lufthansa (LH), Bulgaria Air (FB).
The cheapest flights you can book on the route Sofia Airport (SOF) - Vantaa (HEL).
Direct flights last about 5h 50min.
Direct flights available on: Friday.
Direct flights: Air France (AF).