Cheapest return flights from Portland to Keflavik in August from 529€

AirHint found the following cheapest return flights from Portland (PDX) to Keflavik (KEF) in August 2026 (see full year).

Return flights

23 Aug - 30 Aug Alaska Airlines
24 Aug - 31 Aug Alaska Airlines
26 Aug - 02 Sep Alaska Airlines
28 Aug - 04 Sep Alaska Airlines
23 Aug - 30 Aug Icelandair direct
25 Aug - 01 Sep Icelandair direct
30 Aug - 06 Sep Icelandair direct
29 Aug - 05 Sep Virgin Atlantic
22 Aug - 29 Aug Virgin Atlantic
27 Aug - 03 Sep Virgin Atlantic
17 Aug - 24 Aug Virgin Atlantic
18 Aug - 25 Aug Virgin Atlantic
26 Aug - 02 Sep Icelandair direct
27 Aug - 03 Sep Icelandair direct
28 Aug - 04 Sep Icelandair direct
29 Aug - 05 Sep Icelandair direct
21 Aug - 28 Aug KLM
03 Aug - 10 Aug Air France
20 Aug - 27 Aug Delta
19 Aug - 26 Aug Alaska Airlines

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

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