Oslo (OSL) to Seattle / Tacoma (SEA) flight deal in economy from $639

Air CanadaACAir CanadaLufthansaLHLufthansaSwiss International Air LinesLXSwiss International Air LinesAustrian AirlinesOSAustrian AirlinesUnited AirlinesUAUnited Airlines
Round Trip•Economy
NorwayOSL

Oslo Airport, Gardermoen

Oslo, Norway
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
$739 USD
-14%$639 USD
Verified about 5 hours ago
Great Availability
67% of dates checked are available within 10% of the lowest price

Monday, December 7th, 2026

5 round-trip options

Returning
Sat, Dec 12, 2026•5 Day Trip
$801 USD
Google Flights
Returning
Sun, Dec 13, 2026•6 Day Trip
$650 USD
Google Flights
Returning
Mon, Dec 14, 2026•7 Day Trip
$690 USD
Google Flights
Returning
Wed, Dec 16, 2026•9 Day Trip
$689 USD
Google Flights
Returning
Thu, Dec 17, 2026•10 Day Trip
$740 USD
Google Flights