Cheapest return flights from Seattle to Keflavik in November from $430

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

Return flights

14 Nov - 21 Nov Icelandair direct
11 Nov - 18 Nov Icelandair direct
06 Nov - 13 Nov Icelandair direct
07 Nov - 14 Nov Icelandair direct
12 Nov - 19 Nov Icelandair direct
13 Nov - 20 Nov Icelandair direct
16 Nov - 23 Nov Icelandair direct
17 Nov - 24 Nov Icelandair direct
18 Nov - 25 Nov Icelandair direct
19 Nov - 26 Nov Icelandair direct
27 Nov - 04 Dec Icelandair direct
28 Nov - 05 Dec Icelandair direct
10 Nov - 06 Dec Lufthansa
10 Nov - 06 Dec Icelandair direct
30 Nov - 07 Dec Icelandair direct
25 Nov - 02 Dec Icelandair direct
26 Nov - 03 Dec Icelandair direct
29 Nov - 06 Dec Icelandair direct
24 Nov - 01 Dec Icelandair direct

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

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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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