AirHint found the following cheapest one-way flights from Delhi (DEL) to Sofia (SOF) in October 2025 (see full year).
One-Way flights
| 31 Oct | IndiGo | ||
| 30 Oct | IndiGo | ||
| 29 Oct | Air India | ||
| 27 Oct | IndiGo | ||
| 28 Oct | IndiGo |
Also check the deals for return flights from Delhi to Sofia in October.
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