SEA to OSL from $444 in economy

FIIcelandair

Round Trip•Economy

SEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

OSL

Oslo Airport, Gardermoen

Oslo, Norway

$633 USD

-30%$444 USD

Verified 6 days ago

September 2026

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

31$513 1$513 2$513 3$515 4$515 5$564 6$607 7$564 8$564 9$854 10$513 11$564 12$611 13$616 14$564 15$564 16$617 17$611 18$513 19$557 20$667 21$622 22$506 23$557 24$506 25$532 26$506 27$506 28$532 29$506 30$500 1$500 2$525 3$500 4$525

Fair Availability

23% of dates checked are available within 10% of the lowest price

Sunday, September 20th, 2026

6 round-trip options

Returning

Fri, Sep 25, 2026•5 Day Trip

$794 USD

Google Flights

Returning

Sat, Sep 26, 2026•6 Day Trip

$797 USD

Google Flights

Returning

Mon, Sep 28, 2026•8 Day Trip

$711 USD

Google Flights

Returning

Tue, Sep 29, 2026•9 Day Trip

$747 USD

Google Flights

Returning

Thu, Oct 1, 2026•11 Day Trip

$740 USD

Google Flights

Returning

Sat, Oct 3, 2026•13 Day Trip

$667 USD

Google Flights

Seattle / Tacoma (SEA) to Oslo (OSL) flight deal in economy from $444

Seattle–Tacoma International Airport

Oslo Airport, Gardermoen

September 2026

Sunday, September 20th, 2026