Cheapest return flights from Seattle to Keflavik in November from 592€

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

12 Nov - 19 Nov Alaska Airlines
01 Nov - 07 Nov Alaska Airlines
09 Nov - 17 Nov Alaska Airlines
05 Nov - 15 Nov Alaska Airlines
07 Nov - 13 Nov Lufthansa
11 Nov - 21 Nov Alaska Airlines
10 Nov - 20 Nov Alaska Airlines
06 Nov - 12 Nov Alaska Airlines
07 Nov - 14 Nov Alaska Airlines
06 Nov - 16 Nov Alaska Airlines

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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