Cheapest return flights from Seattle to Keflavik in December from 677€

Best time to book flights for Seattle (SEA) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest return flights from Seattle (SEA) to Keflavik (KEF) in December 2024 (see full year).

Return flights

06 Dec - 08 Dec Alaska Airlines
02 Dec - 08 Dec Lufthansa
01 Dec - 12 Dec Sun Country Airlines
29 Dec - 11 Jan Frontier Airlines
29 Dec - 11 Jan Icelandair direct
08 Dec - 14 Dec Alaska Airlines
16 Dec - 23 Dec Icelandair direct
02 Dec - 08 Dec Icelandair direct
06 Dec - 08 Dec Icelandair direct
01 Dec - 12 Dec Icelandair direct
08 Dec - 14 Dec Icelandair direct
20 Dec - 04 Jan Sun Country Airlines

Also check the deals for one-way flights from Seattle to Keflavik in December.

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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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