SEA to KEF from $491 in economy – flightdeals.net

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Round Trip•Economy

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

Keflavík International Airport

Reykjavik (Keflavik), Iceland

$1,028 USD

-52%$491 USD

Verified about 2 hours ago

October 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

28 29 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14$776 15$776 16$766 17$491 18$492 19$495 20$491 21$492 22$492 23$492 24$492 25$492 26$644 27$498 28$492 29$644 30$504 31$504 1$492

Rare Availability

5% of dates checked are available within 10% of the lowest price

Wednesday, October 21st, 2026

5 round-trip options

Returning

Mon, Oct 26, 2026•5 Day Trip

$774 USD

Returning

Thu, Oct 29, 2026•8 Day Trip

$492 USD

Returning

Sat, Oct 31, 2026•10 Day Trip

$492 USD

Returning

Sun, Nov 1, 2026•11 Day Trip

$861 USD

Returning

Mon, Nov 2, 2026•12 Day Trip

$492 USD