AirHint found the following cheapest return flights from Zagreb (ZAG) to Sofia (SOF) in January 2026 (see full year).
Return flights
| 30 Jan - 01 Feb | Ryanair | ||
| 16 Jan - 23 Jan | Ryanair | ||
| 29 Jan - 31 Jan | Ryanair | ||
| 23 Jan - 25 Jan | Ryanair | ||
| 17 Jan - 19 Jan | Ryanair | ||
| 17 Jan - 20 Jan | Ryanair | ||
| 27 Jan - 30 Jan | Air Serbia | ||
| 20 Jan - 21 Jan | Air Serbia |
Also check the deals for one-way flights from Zagreb to Sofia in January.
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