For the cheapest flights to Basel book 51 days before departure.
The most popular airlines on the route Sofia - Basel: Wizz Air (W6), Lufthansa (LH), Turkish Airlines (TK).
The cheapest flights are on the route Sofia Airport (SOF) - Basel-Mulhouse-Freiburg Airport (BSL).
Direct flights last about 2h 25min.
Direct flights available 2 days a week - Monday, Friday.
Direct flights: Wizz Air (W6).