Cheapest return flights from San Francisco to Keflavik in April from 518€

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

Return flights

14 Apr - 21 Apr British Airways
01 Apr - 08 Apr Lufthansa
15 Apr - 22 Apr Lufthansa
16 Apr - 23 Apr SWISS
09 Apr - 16 Apr Lufthansa
08 Apr - 15 Apr British Airways
02 Apr - 09 Apr SWISS
12 Apr - 19 Apr Lufthansa
17 Apr - 24 Apr Lufthansa
30 Apr - 07 May Lufthansa
13 Apr - 20 Apr SWISS
29 Apr - 23 May Lufthansa

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

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