AirHint found the following cheapest one-way flights from Delhi (DEL) to Sofia (SOF) in December 2025 (see full year).
One-Way flights
| 20 Dec | IndiGo | ||
| 19 Dec | IndiGo | ||
| 18 Dec | IndiGo | ||
| 24 Dec | IndiGo | ||
| 22 Dec | IndiGo | ||
| 23 Dec | IndiGo | ||
| 21 Dec | IndiGo | ||
| 27 Dec | Flynas | ||
| 26 Dec | Lufthansa | ||
| 30 Dec | LOT |
Also check the deals for return flights from Delhi to Sofia in December.
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