AirHint found the following cheapest return flights from Athens (ATH) to Sofia (SOF) in December 2026 (see full year).
Return flights
| 04 Dec - 08 Dec | SKY express | ||
| 24 Dec - 29 Dec | Turkish Airlines | ||
| 05 Dec - 09 Dec | Turkish Airlines |
Also check the deals for one-way flights from Athens to Sofia in December.
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