AirHint found the following cheapest return flights from Chicago (ORD) to Sofia (SOF) in February 2026 (see full year).
Return flights
| 07 Feb - 12 Feb | Turkish Airlines | ||
| 27 Feb - 13 Mar | Turkish Airlines | ||
| 13 Feb - 07 Mar | Turkish Airlines | ||
| 24 Feb - 10 Mar | Turkish Airlines | ||
| 07 Feb - 21 Feb | LOT |
Also check the deals for one-way flights from Chicago to Sofia in February.
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