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 6 hours ago
Great Availability
67% of dates checked are available within 10% of the lowest price

Saturday, August 1st, 2026

8 round-trip options

Returning
Fri, Aug 7, 2026•6 Day Trip
$944 USD
Google Flights
Returning
Sat, Aug 8, 2026•7 Day Trip
$1,055 USD
Google Flights
Returning
Sun, Aug 9, 2026•8 Day Trip
$944 USD
Google Flights
Returning
Mon, Aug 10, 2026•9 Day Trip
$944 USD
Google Flights
Returning
Wed, Aug 12, 2026•11 Day Trip
$944 USD
Google Flights
Returning
Thu, Aug 13, 2026•12 Day Trip
$947 USD
Google Flights
Returning
Fri, Aug 14, 2026•13 Day Trip
$1,003 USD
Google Flights
Returning
Sat, Aug 15, 2026•14 Day Trip
$944 USD
Google Flights