Cheapest return flights from San Francisco to Keflavik in March from $618

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

Return flights

04 Mar - 12 Mar jetBlue
03 Mar - 10 Mar jetBlue
10 Mar - 17 Mar jetBlue
18 Mar - 26 Mar jetBlue
23 Mar - 30 Mar Scandinavian Airlines
04 Mar - 11 Mar Hawaiian Airlines
03 Mar - 08 Mar Frontier Airlines
11 Mar - 18 Mar jetBlue
17 Mar - 24 Mar jetBlue
05 Mar - 13 Mar Scandinavian Airlines
31 Mar - 07 Apr Hawaiian Airlines
30 Mar - 06 Apr Frontier Airlines
28 Mar - 04 Apr jetBlue
26 Mar - 02 Apr Scandinavian Airlines
27 Mar - 03 Apr jetBlue
25 Mar - 05 Apr jetBlue
29 Mar - 05 Apr Scandinavian Airlines

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

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