AirHint found the following cheapest return flights from Washington (IAD) to Helsinki (HEL) in March 2026 (see full year).

Return flights

10 Mar - 17 Mar	Icelandair
22 Mar - 29 Mar	Icelandair
02 Mar - 09 Mar	Scandinavian Airlines
14 Mar - 21 Mar	Scandinavian Airlines
18 Mar - 25 Mar	Scandinavian Airlines
30 Mar - 06 Apr	Scandinavian Airlines
26 Mar - 02 Apr	Scandinavian Airlines
06 Mar - 13 Mar	British Airways

Also check the deals for one-way flights from Washington to Helsinki in March.

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 Washington to Helsinki in March from $377

Return flights