Cheapest return flights from Phoenix to Keflavik in August from $583

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 August 2025 (see full year).

Return flights

13 Aug - 20 Aug Air Canada
19 Aug - 26 Aug United
12 Aug - 19 Aug Air Canada
31 Aug - 07 Sep Frontier Airlines
14 Aug - 21 Aug Air Canada
15 Aug - 22 Aug Air Canada
10 Aug - 17 Aug WestJet
17 Aug - 24 Aug United
18 Aug - 25 Aug United
30 Aug - 06 Sep Air Canada
16 Aug - 22 Aug WestJet
20 Aug - 27 Aug Air Canada
27 Aug - 03 Sep Air Canada
26 Aug - 02 Sep United
29 Aug - 05 Sep Frontier Airlines
25 Aug - 01 Sep WestJet
26 Aug - 01 Sep WestJet
28 Aug - 04 Sep WestJet

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

Skyscanner

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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