Cheapest return flights from Portland to Keflavik in July from 657€

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 July 2025 (see full year).

Return flights

05 Jul - 13 Jul KLM
06 Jul - 14 Jul Air France
28 Jul - 05 Aug Icelandair direct
14 Jul - 23 Jul Icelandair direct
16 Jul - 24 Jul Icelandair direct
22 Jul - 30 Jul jetBlue
15 Jul - 23 Jul jetBlue
09 Jul - 16 Jul jetBlue
09 Jul - 20 Jul jetBlue
09 Jul - 17 Jul jetBlue
09 Jul - 17 Jul Icelandair direct
27 Jul - 04 Aug Sun Country Airlines
26 Jul - 03 Aug Icelandair direct
24 Jul - 01 Aug Icelandair direct
29 Jul - 04 Aug jetBlue
24 Jul - 02 Aug Icelandair direct
29 Jul - 09 Aug Alaska Airlines
24 Jul - 04 Aug Frontier Airlines

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

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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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