AirHint found the following cheapest return flights from Boston (BOS) to Helsinki (HEL) in April 2026 (see full year).

Return flights

28 Apr - 05 May	Scandinavian Airlines
08 Apr - 15 Apr	Icelandair
23 Apr - 30 Apr	Scandinavian Airlines
13 Apr - 20 Apr	Scandinavian Airlines
03 Apr - 10 Apr	Icelandair
18 Apr - 25 Apr	Scandinavian Airlines

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

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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Cheapest return flights from Boston to Helsinki in April from 358€

Return flights