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

Thursday, December 31st, 2026

5 round-trip options

Returning
Tue, Jan 5, 2027•5 Day Trip
$1,192 USD
Google Flights
Returning
Wed, Jan 6, 2027•6 Day Trip
$1,012 USD
Google Flights
Returning
Thu, Jan 7, 2027•7 Day Trip
$971 USD
Google Flights
Returning
Sat, Jan 9, 2027•9 Day Trip
$1,012 USD
Google Flights
Returning
Sun, Jan 10, 2027•10 Day Trip
$1,012 USD
Google Flights