AirHint found the following cheapest return flights from Boston (BOS) to Sofia (SOF) in August 2026 (see full year).
Return flights
| 12 Aug - 26 Aug | LEVEL | ||
| 18 Aug - 01 Sep | Austrian Airlines | ||
| 21 Aug - 04 Sep | Air France | ||
| 18 Aug - 30 Aug | Icelandair | ||
| 04 Aug - 15 Aug | Lufthansa |
Also check the deals for one-way flights from Boston to Sofia in August.
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