OSL to SEA from $648 in economy – flightdeals.net

Home Premium Fare Deals About

Air France

Delta Air Lines

DLDelta Air Lines

KLM

Round Trip•Economy

Oslo Airport, Gardermoen

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

$821 USD

-21%$648 USD

Verified 14 days ago

September 2026

Mon

Tue

Wed

Thu

Fri

Sat

Sun

31$659 1$665 2$665 3$654 4$648 5$648 6$666 7$670 8$670 9$670 10$654 11$648 12$655 13$671 14$659 15$672 16$666 17$654 18$654 19$655 20$659 21$659 22$670 23$720 24$662 25$662 26$705 27$666 28$659 29$670 30$671 1$654 2$648 3$654 4$659

Good Availability

51% of dates checked are available within 10% of the lowest price

Thursday, September 17th, 2026

2 round-trip options

Returning

Sat, Sep 26, 2026•9 Day Trip

$665 USD

Returning

Sun, Sep 27, 2026•10 Day Trip

$654 USD