Cheapest return flights from Seattle to Keflavik in March from 347€

AirHint found the following cheapest return flights from Seattle (SEA) to Keflavik (KEF) in March 2026 (see full year).

Return flights

02 Mar - 09 Mar Icelandair direct
03 Mar - 10 Mar Icelandair direct
09 Mar - 16 Mar Icelandair direct
10 Mar - 17 Mar Icelandair direct
11 Mar - 18 Mar Icelandair direct
04 Mar - 11 Mar Lufthansa
04 Mar - 11 Mar Icelandair direct
05 Mar - 12 Mar Icelandair direct
01 Mar - 08 Mar Icelandair direct
08 Mar - 15 Mar Icelandair direct

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

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