Cheapest return flights from Phoenix to Keflavik in May from $791

Best time to book flights for Phoenix (PHX) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Phoenix (PHX) to Keflavik (KEF) in May 2025 (see full year).

Return flights

20 May - 28 May WestJet
13 May - 20 May Spirit Airlines

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

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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