Cheapest one-way flights from Seattle to Keflavik in November from $343

AirHint found the following cheapest one-way flights from Seattle (SEA) to Keflavik (KEF) in November 2025 (see full year).

One-Way flights

19 Nov Hawaiian Airlines
17 Nov Hawaiian Airlines
18 Nov KLM
20 Nov Hawaiian Airlines
22 Nov Hawaiian Airlines
21 Nov WestJet
17 Nov Icelandair direct
18 Nov Icelandair direct
19 Nov Icelandair direct
20 Nov Icelandair direct

Also check the deals for return flights from Seattle to Keflavik in November.

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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