Cheapest return flights from Seattle to Keflavik in November from $541

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

04 Nov - 10 Nov British Airways
05 Nov - 15 Nov British Airways
08 Nov - 15 Nov British Airways
14 Nov - 21 Nov British Airways
10 Nov - 20 Nov Icelandair direct
04 Nov - 10 Nov Icelandair direct
05 Nov - 11 Nov Alaska Airlines
14 Nov - 21 Nov Icelandair direct
07 Nov - 14 Nov Icelandair direct
05 Nov - 15 Nov Icelandair direct

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

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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