Cheapest return flights from Boston to Helsinki in May from $522

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 May 2025 (see full year).

Return flights

06 May - 13 May Icelandair
09 May - 16 May Icelandair
15 May - 22 May Icelandair
21 May - 28 May Icelandair
12 May - 19 May Scandinavian Airlines
27 May - 07 Jun Icelandair
24 May - 31 May Icelandair
29 May - 05 Jun Icelandair
03 May - 10 May Scandinavian Airlines
18 May - 25 May Scandinavian Airlines

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

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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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