For the cheapest flights to Sofia book 43 days before departure.
The most popular airlines on the route London - Sofia: Ryanair (FR), Wizz Air (W6), easyJet (U2).
The cheapest flights are on the route Stansted (STN) - Sofia Airport (SOF).
Direct flights last about 3h 1min.
Direct flights are available 7 days a week.
Direct flights: Wizz Air (W6), Ryanair (FR), Bulgaria Air (FB).