AirHint found the following cheapest one-way flights from Delhi (DEL) to Sofia (SOF) in December 2025 (see full year).
One-Way flights
| 27 Dec | LOT | ||
| 30 Dec | Gulf Air | ||
| 03 Dec | Lufthansa | ||
| 31 Dec | Air India | ||
| 13 Dec | flydubai |
Also check the deals for return flights from Delhi to Sofia in December.
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