Cheapest return flights from Boston to Helsinki in September from 493€

Best time to book flights for Boston (BOS) to Helsinki (HEL) flights at AirHint

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

Return flights

25 Sep - 02 Oct Icelandair
04 Sep - 11 Sep Scandinavian Airlines

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