SEA to KEF from $519 in economy – flightdeals.net

Home Premium Fare Deals About

Air France

Delta Air Lines

DLDelta Air Lines

KLM

Round Trip•Economy

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

Keflavík International Airport

Reykjavik (Keflavik), Iceland

$1,266 USD

-59%$519 USD

Verified 1 day ago

October 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

28$627 29$627 30$627 1$627 2$627 3$627 4$627 5$627 6$627 7$777 8$777 9$777 10$627 11$627 12$627 13$627 14$627 15$627 16$627 17$627 18$627 19 20 21 22 23 24 25 26 27 28 29 30 31 1

Limited Availability

11% of dates checked are available within 10% of the lowest price

Monday, October 12th, 2026

5 round-trip options

Returning

Sun, Oct 18, 2026•6 Day Trip

$704 USD

Returning

Wed, Oct 21, 2026•9 Day Trip

$627 USD

Returning

Thu, Oct 22, 2026•10 Day Trip

$627 USD

Returning

Fri, Oct 23, 2026•11 Day Trip

$627 USD

Returning

Sat, Oct 24, 2026•12 Day Trip

$627 USD