AirHint found the following cheapest one-way flights from Helsinki (HEL) to Sofia (SOF) in December 2025 (see full year).
One-Way flights
| 31 Dec | Ryanair | ||
| 15 Dec | Ryanair | ||
| 05 Dec | Ryanair | ||
| 16 Dec | Norwegian Air Sweden AOC | ||
| 01 Dec | Norwegian Air Sweden AOC | ||
| 12 Dec | airBaltic | ||
| 17 Dec | Finnair | ||
| 24 Dec | Ryanair | ||
| 21 Dec | Finnair |
Also check the deals for return flights from Helsinki to Sofia in December.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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