AirHint found the following cheapest return flights from Warsaw (WAW) to Sofia (SOF) in December 2026 (see full year).
Return flights
| 31 Dec - 31 Dec | LOT | direct | |
| 24 Dec - 24 Dec | LOT | direct | |
| 06 Dec - 10 Dec | SKY express | ||
| 06 Dec - 24 Dec | SKY express | ||
| 13 Dec - 31 Dec | SKY express | ||
| 13 Dec - 30 Dec | SKY express | ||
| 13 Dec - 24 Dec | SKY express |
Also check the deals for one-way flights from Warsaw to Sofia in December.
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