Cheapest return flights from Portland to Keflavik in August from 572€

Best time to book flights for Portland (PDX) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Portland (PDX) to Keflavik (KEF) in August 2025 (see full year).

Return flights

31 Aug - 11 Sep jetBlue
20 Aug - 31 Aug Icelandair direct
17 Aug - 28 Aug Icelandair direct
18 Aug - 29 Aug Icelandair direct
29 Aug - 09 Sep Icelandair direct
31 Aug - 11 Sep Icelandair direct
24 Aug - 04 Sep Icelandair direct
25 Aug - 05 Sep Icelandair direct
22 Aug - 02 Sep Icelandair direct
25 Aug - 02 Sep Icelandair direct
23 Aug - 02 Sep Icelandair direct
23 Aug - 03 Sep Air France
16 Aug - 27 Aug Air France
10 Aug - 21 Sep Icelandair direct
15 Aug - 26 Aug United
15 Aug - 26 Aug Icelandair direct
03 Aug - 17 Aug Air France
21 Aug - 28 Aug Icelandair direct
03 Aug - 17 Aug Icelandair direct
11 Aug - 22 Aug Icelandair direct

Also check the deals for one-way flights from Portland 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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