Cheapest return flights from San Francisco to Keflavik in April from $624

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

Return flights

20 Apr - 27 Apr jetBlue
16 Apr - 23 Apr jetBlue
01 Apr - 08 Apr jetBlue
01 Apr - 06 Apr jetBlue
04 Apr - 11 Apr jetBlue
02 Apr - 09 Apr jetBlue
10 Apr - 26 Apr Scandinavian Airlines
04 Apr - 09 Apr jetBlue
02 Apr - 07 Apr jetBlue
03 Apr - 08 Apr jetBlue

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

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