Cheapest return flights from Seattle to Keflavik in November from $586

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 November 2025 (see full year).

Return flights

10 Nov - 17 Nov Hawaiian Airlines
09 Nov - 17 Nov Hawaiian Airlines
11 Nov - 19 Nov jetBlue
08 Nov - 16 Nov jetBlue
16 Nov - 24 Nov Hawaiian Airlines
27 Nov - 05 Dec Hawaiian Airlines
12 Nov - 20 Nov jetBlue
10 Nov - 18 Nov Alaska Airlines
01 Nov - 09 Nov Hawaiian Airlines
05 Nov - 13 Nov Hawaiian Airlines
07 Nov - 15 Nov jetBlue
28 Nov - 06 Dec Hawaiian Airlines
26 Nov - 04 Dec Sun Country Airlines
30 Nov - 08 Dec Icelandair direct
27 Nov - 05 Dec Icelandair direct
28 Nov - 06 Dec Icelandair direct
29 Nov - 07 Dec Lufthansa
29 Nov - 07 Dec Icelandair direct
25 Nov - 03 Dec Sun Country Airlines
25 Nov - 03 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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