The cheapest flight to Kiev you can get by boooking 41 days before departure.
The most popular airlines on the route Sofia - Kiev: Dnieproavia (Z6), Austrian (OS), Lufthansa (LH).
The cheapest flights you can book on the route Sofia Airport (SOF) - Boryspil (KBP).
Direct flights last about 2h 0min.
Direct flights available 7 days a week.
Direct flights: Dnieproavia (Z6), Wind Rose Aviation (7W).