For the cheapest flights to Sofia book 43 days before departure.
The most popular airlines on the route Brussels - Sofia: Wizz Air (W6), Ryanair (FR), Bulgaria Air (FB).
The cheapest flights are on the route Charleroi (CRL) - Sofia Airport (SOF).
Direct flights last about 2h 32min.
Direct flights are available 7 days a week.
Direct flights: Ryanair (FR), Bulgaria Air (FB), Wizz Air (W6).