For the cheapest flights to Sofia book 44 days before departure.
The most popular airlines on the route Bucharest - Sofia: Tarom (RO), Lufthansa (LH), Air Serbia (JU).
The cheapest flights are on the route Otopeni Henri Coanda (OTP) - Sofia Airport (SOF).
Direct flights last about 1h 15min.
Direct flights available 6 days a week - Monday, Tuesday, Wednesday, Thursday, Friday, Sunday.
Direct flights: Tarom (RO), Bulgaria Air (FB).