Cheapest return flights from Helsinki to Boston in September from $447

AirHint found the following cheapest return flights from Helsinki (HEL) to Boston (BOS) in September 2025 (see full year).

Return flights

23 Sep - 30 Sep Delta

Also check the deals for one-way flights from Helsinki to Boston in September.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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