AirHint found the following cheapest return flights from Boston (BOS) to Helsinki (HEL) in August 2026 (see full year).
Return flights
| 06 Aug - 16 Aug | Air France | ||
| 02 Aug - 10 Aug | Lufthansa | ||
| 06 Aug - 15 Aug | Air France | ||
| 07 Aug - 15 Aug | Lufthansa | ||
| 01 Aug - 08 Aug | Brussels Airlines |
Also check the deals for one-way flights from Boston to Helsinki in August.
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