Cheapest one-way flights from Seattle to Keflavik in February from $416

AirHint found the following cheapest one-way flights from Seattle (SEA) to Keflavik (KEF) in February 2026 (see full year).

One-Way flights

16 Feb Hawaiian Airlines
16 Feb Icelandair direct
11 Feb Icelandair direct
12 Feb Icelandair direct
13 Feb Icelandair direct
14 Feb Icelandair direct
01 Feb Icelandair direct
02 Feb Icelandair direct
03 Feb Icelandair direct
04 Feb Icelandair direct

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

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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