Cheapest return flights from Phoenix to Keflavik in March from $582

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

Return flights

03 Mar - 11 Mar jetBlue
18 Mar - 25 Mar jetBlue
04 Mar - 11 Mar jetBlue
30 Mar - 06 Apr jetBlue
17 Mar - 24 Mar jetBlue
31 Mar - 07 Apr Hawaiian Airlines
28 Mar - 04 Apr jetBlue
29 Mar - 05 Apr Frontier Airlines
27 Mar - 03 Apr jetBlue
18 Mar - 23 Mar Scandinavian Airlines
19 Mar - 23 Mar Scandinavian Airlines
05 Mar - 12 Mar Frontier Airlines
23 Mar - 30 Mar jetBlue
16 Mar - 23 Mar jetBlue
25 Mar - 01 Apr jetBlue
03 Mar - 10 Mar WestJet
26 Mar - 02 Apr Frontier Airlines

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

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