The cheapest flight to Sofia you can get by boooking 39 days before departure.
The most popular airlines on the route Karlsruhe - Sofia: Ryanair (FR), Air Berlin (AB), Air Serbia (JU).
The cheapest flights you can book on the route Baden-Baden (FKB) - Sofia Airport (SOF).
Direct flights last about 2h 15min.
Direct flights available 2 days a week - wednesday, sunday.
Direct flights: Ryanair (FR).
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