The cheapest flight to Sofia you can get by boooking 43 days before departure.
The most popular airlines on the route Barcelona - Sofia: Ryanair (FR), Wizz Air (W6), Bulgaria Air (FB).
The cheapest flights you can book on the route El Prat (BCN) - Sofia Airport (SOF).
Direct flights last about 2h 50min.
Direct flights available 7 days a week.
Direct flights: Wizz Air (W6), Ryanair (FR), Iberia (IB).