Cheapest return flights from Phoenix to Keflavik in September from 809€

AirHint found the following cheapest return flights from Phoenix (PHX) to Keflavik (KEF) in September 2026 (see full year).

Return flights

06 Sep - 13 Sep Alaska Airlines
08 Sep - 17 Sep Southwest Airlines
10 Sep - 17 Sep Southwest Airlines

Also check the deals for one-way flights from Phoenix to Keflavik in September.

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