Cheapest return flights from Portland to Keflavik in October from 526€

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 October 2025 (see full year).

Return flights

18 Oct - 24 Oct jetBlue
06 Oct - 21 Oct jetBlue
14 Oct - 24 Oct Air France
07 Oct - 17 Oct Air France
14 Oct - 23 Oct Delta
06 Oct - 16 Oct Air France
09 Oct - 17 Oct Air France
16 Oct - 24 Oct Air France
06 Oct - 14 Oct Delta
30 Oct - 05 Nov Icelandair direct
30 Oct - 07 Nov Icelandair direct
25 Oct - 02 Nov Icelandair direct
28 Oct - 05 Nov Icelandair direct
27 Oct - 03 Nov Icelandair direct
28 Oct - 07 Nov Icelandair direct
30 Oct - 09 Nov Icelandair direct
13 Oct - 19 Oct Air France
23 Oct - 02 Nov Icelandair direct
22 Oct - 01 Nov jetBlue
29 Oct - 05 Nov Hawaiian Airlines

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

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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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