Cheapest return flights from San Francisco to Helsinki in May from $531

AirHint found the following cheapest return flights from San Francisco (SFO) to Helsinki (HEL) in May 2026 (see full year).

Return flights

03 May - 10 May Scandinavian Airlines
11 May - 18 May Scandinavian Airlines
10 May - 17 May Scandinavian Airlines
04 May - 11 May Scandinavian Airlines
12 May - 19 May Scandinavian Airlines
19 May - 26 May Scandinavian Airlines
09 May - 16 May Scandinavian Airlines
01 May - 08 May Scandinavian Airlines
02 May - 09 May Scandinavian Airlines
05 May - 12 May Scandinavian Airlines
26 May - 02 Jun Scandinavian Airlines
25 May - 01 Jun Scandinavian Airlines
27 May - 03 Jun Scandinavian Airlines
29 May - 05 Jun Scandinavian Airlines
28 May - 04 Jun Scandinavian Airlines
31 May - 07 Jun Scandinavian Airlines
30 May - 06 Jun Scandinavian Airlines

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

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