Cheapest return flights from Phoenix to Keflavik in April from 542€

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

Return flights

28 Apr - 05 May Frontier Airlines
16 Apr - 23 Apr Frontier Airlines
27 Apr - 04 May Frontier Airlines
13 Apr - 20 Apr Frontier Airlines
06 Apr - 13 Apr Frontier Airlines
17 Apr - 24 Apr Sun Country Airlines
23 Apr - 30 Apr Frontier Airlines
14 Apr - 21 Apr Frontier Airlines
30 Apr - 07 May Frontier Airlines
24 Apr - 01 May Frontier Airlines
07 Apr - 14 Apr Hawaiian Airlines
15 Apr - 22 Apr Hawaiian Airlines
29 Apr - 06 May Alaska Airlines
08 Apr - 15 Apr Frontier Airlines
05 Apr - 12 Apr Frontier Airlines

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

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