AirHint found the following cheapest return flights from San Francisco (SFO) to Keflavik (KEF) in June 2026 (see full year).
Return flights
| 20 Jun - 30 Jun | Alaska Airlines | ||
| 18 Jun - 04 Jul | Alaska Airlines | ||
| 19 Jun - 29 Jun | Icelandair |
Also check the deals for one-way flights from San Francisco to Keflavik in June.
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