Cheapest return flights from San Francisco to Keflavik in December from 1658€

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

Return flights

24 Dec - 30 Dec Lufthansa
25 Dec - 02 Jan SWISS

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

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