AirHint found the following cheapest return flights from Sofia (SOF) to San Jose (SJO) in December 2025 (see full year).
Return flights
| 16 Dec - 28 Dec | Air France | ||
| 17 Dec - 29 Dec | Ryanair | ||
| 17 Dec - 28 Dec | Ryanair | ||
| 18 Dec - 31 Dec | Ryanair | ||
| 25 Dec - 05 Jan | Transavia France |
Also check the deals for one-way flights from Sofia to San Jose in December.
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