Cheapest return flights from San Francisco to Helsinki in December from 522€

AirHint found the following cheapest return flights from San Francisco (SFO) to Helsinki (HEL) in December 2025 (see full year).

Return flights

08 Dec - 22 Dec Brussels Airlines
11 Dec - 30 Dec United
05 Dec - 18 Dec Lufthansa
16 Dec - 12 Jan United
11 Dec - 05 Jan Brussels Airlines
18 Dec - 12 Jan Lufthansa
24 Dec - 04 Jan Delta
19 Dec - 30 Dec Lufthansa

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

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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