AirHint found the following cheapest return flights from Boston (BOS) to Helsinki (HEL) in June 2026 (see full year).
Return flights
| 02 Jun - 10 Jun | SWISS | ||
| 01 Jun - 09 Jun | Air France | ||
| 15 Jun - 30 Jul | Porter Airlines (Canada) Ltd | ||
| 18 Jun - 22 Jun | Scandinavian Airlines |
Also check the deals for one-way flights from Boston to Helsinki in June.
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