Reykjavik (Keflavik) (KEF) to Seattle / Tacoma (SEA) flight deal from $557 USD in economy class

FIIcelandair

Round Trip•Economy

KEF

Keflavík International Airport

Reykjavik (Keflavik), Iceland

SEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

$725 USD

-23%$557 USD

Verified Apr 7, 2026 at 9:14 AM

April 2026

Today

Mon

Tue

Wed

Thu

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Sat

Sun

30 31 1 2 3 4 5 6 7$910 8$910 9$910 10$910 11$1,217 12$1,047 13$866 14$742 15$742 16$742 17$999 18$1,181 19$992 20$898 21$854 22$708 23$708 24$718 25$752 26$720 27$708 28$708 29$708 30$708 1$711 2$791 3$723

Rare Availability

6% of dates checked are available within 10% of the lowest price

Tuesday, April 14th, 2026

7 round-trip options

Returning

Sun, Apr 19, 2026•5 Day Trip

$842 USD

Google Flights

Returning

Tue, Apr 21, 2026•7 Day Trip

$742 USD

Google Flights

Returning

Wed, Apr 22, 2026•8 Day Trip

$742 USD

Google Flights

Returning

Thu, Apr 23, 2026•9 Day Trip

$878 USD

Google Flights

Returning

Fri, Apr 24, 2026•10 Day Trip

$810 USD

Google Flights

Returning

Sun, Apr 26, 2026•12 Day Trip

$742 USD

Google Flights

Returning

Mon, Apr 27, 2026•13 Day Trip

$742 USD

Google Flights