Cheapest one-way flights from Seattle to Keflavik in March from 298€

Best time to book flights for Seattle (SEA) to Keflavik (KEF) flights at AirHint

AirHint found the following cheapest one-way flights from Seattle (SEA) to Keflavik (KEF) in March 2025 (see full year).

One-Way flights

02 Mar Alaska Airlines
16 Mar Spirit Airlines
20 Mar Frontier Airlines
16 Mar Icelandair direct
31 Mar Icelandair direct
24 Mar Icelandair direct
25 Mar Icelandair direct
26 Mar Icelandair direct
27 Mar Icelandair direct
11 Mar Icelandair direct

Also check the deals for return flights from Seattle to Keflavik in March.

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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