Cheapest return flights from San Francisco to Keflavik in March from $807

AirHint found the following cheapest return flights from San Francisco (SFO) to Keflavik (KEF) in March 2026 (see full year).

Return flights

24 Mar - 30 Mar jetBlue
29 Mar - 06 Apr Frontier Airlines
03 Mar - 10 Mar Scandinavian Airlines
03 Mar - 09 Mar Scandinavian Airlines
07 Mar - 14 Mar Frontier Airlines
08 Mar - 15 Mar Alaska Airlines
03 Mar - 08 Mar FrenchBee
04 Mar - 08 Mar TAP
24 Mar - 29 Mar jetBlue
12 Mar - 19 Mar ITA Airways
14 Mar - 22 Mar KLM

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

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