CA $274 Cheap Flights from Seattle (SEA) to Oslo (OSL)

View CA $274 flight on Sat, Oct. 18, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Gardermoen Airport (OSL)

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Cheap flights from Seattle (SEA) to Oslo (OSL)

Prices were available within the past 7 days and start at CA $274 for one-way flights and CA $615 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Tue., Oct. 28 - Sun., Nov. 2
SEA
Seattle
OSL
Oslo
CA $615 Roundtrip, found 1 day ago
CA $615
Roundtrip
found 1 day ago
Select Icelandair flight, departing Tue., Oct. 28 from Seattle to Oslo, returning Sun., Nov. 2, priced at CA $615 found 1 day ago
Icelandair
Wed., Oct. 15 - Mon., Oct. 20
SEA
Seattle
OSL
Oslo
CA $692 Roundtrip, found 5 days ago
CA $692
Roundtrip
found 5 days ago
Select Icelandair flight, departing Wed., Oct. 15 from Seattle to Oslo, returning Mon., Oct. 20, priced at CA $692 found 5 days ago
Icelandair
Thu., Apr. 17 - Thu., Apr. 24
SEA
Seattle
OSL
Oslo
CA $704 Roundtrip, found 14 hours ago
CA $704
Roundtrip
found 14 hours ago
Select Icelandair flight, departing Thu., Apr. 17 from Seattle to Oslo, returning Thu., Apr. 24, priced at CA $704 found 14 hours ago
Icelandair
Thu., Apr. 17 - Wed., Apr. 23
SEA
Seattle
OSL
Oslo
CA $706 Roundtrip, found 14 hours ago
CA $706
Roundtrip
found 14 hours ago
Select Icelandair flight, departing Thu., Apr. 17 from Seattle to Oslo, returning Wed., Apr. 23, priced at CA $706 found 14 hours ago
American Airlines
Tue., Aug. 26 - Thu., Sep. 4
SEA
Seattle
OSL
Oslo
CA $764 Roundtrip, found 1 day ago
CA $764
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue., Aug. 26 from Seattle to Oslo, returning Thu., Sep. 4, priced at CA $764 found 1 day ago
Scandinavian Airlines
Sun., Aug. 24 - Wed., Sep. 3
SEA
Seattle
OSL
Oslo
CA $791 Roundtrip, found 1 day ago
CA $791
Roundtrip
found 1 day ago
Select Scandinavian Airlines flight, departing Sun., Aug. 24 from Seattle to Oslo, returning Wed., Sep. 3, priced at CA $791 found 1 day ago
Delta
Wed., Oct. 15 - Mon., Oct. 20
SEA
Seattle
OSL
Oslo
CA $795 Roundtrip, found 5 days ago
CA $795
Roundtrip
found 5 days ago
Select Delta flight, departing Wed., Oct. 15 from Seattle to Oslo, returning Mon., Oct. 20, priced at CA $795 found 5 days ago
Swiss International Air Lines
Mon., Aug. 25 - Wed., Sep. 3
SEA
Seattle
OSL
Oslo
CA $806 Roundtrip, found 1 day ago
CA $806
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Mon., Aug. 25 from Seattle to Oslo, returning Wed., Sep. 3, priced at CA $806 found 1 day ago
Lufthansa
Tue., Oct. 28 - Sun., Nov. 2
SEA
Seattle
OSL
Oslo
CA $810 Roundtrip, found 1 day ago
CA $810
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Tue., Oct. 28 from Seattle to Oslo, returning Sun., Nov. 2, priced at CA $810 found 1 day ago
British Airways
Wed., May 7 - Tue., May 20
SEA
Seattle
OSL
Oslo
CA $820 Roundtrip, found 1 day ago
CA $820
Roundtrip
found 1 day ago
Select British Airways flight, departing Wed., May 7 from Seattle to Oslo, returning Tue., May 20, priced at CA $820 found 1 day ago
Flight from Seattle to Oslo (SEA - OSL) route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Gardermoen
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, Turkish Airlines, United, Virgin Atlantic
Roundtrip price
CA $614
Distance
7285 km

Seattle to Oslo Flights

Ready for an adventure? Thought so! Prepare to see the sights when you book your trip from Seattle to Oslo with Expedia.ca. Whether you’re visiting for business or pleasure, we know how important it is to bring home travel stories. Maybe your tales will include the best dinner of your life, or the weirdest street art you saw in the city, or the concert that turned you into a fan of a new band. Whatever it is, your new favourite anecdote is right around the corner. Book your trip from SEA to OSL and begin your journey!

Getting a cheap deal on your trip sets the tone for the perfect holiday. And with Expedia.ca, you know you can travel from Seattle to Oslo on the cheap, with enough money left over for a stellar time in the city. That could mean more tours with the kids, more concerts with the spouse, more dessert amongst co-workers, or even front row seats to a sports game if you’re travelling solo. It’s your holiday! Make it great.

Travelling shouldn’t cost an arm and a leg before you even get to relax on the plane’s armrests. Count on Expedia.ca to get you the best discounts on flights from SEA to OSL. And remember this: You can also save big when you bundle. Add a hotel or car rental deal to your flight and witness those savings add up. Hey, more money for more souvenirs, right? Right! Pack your bags and we’ll see you on the route.

Combine your Oslo flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from with Expedia Canada. Use us as your top travel destination and have the confidence that you’re getting a bargain!

Frequently asked questions

How much is a flight from SEA to Oslo Gardermoen Airport?
Start packing your suitcase, because round-trip flights between SEA and Oslo Gardermoen Airport start from CA $615. That’s based on fares advertised within the last 7 days on Expedia for flights departing within the next year. Prices can go up quickly, so book now to lock in the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Seattle - Tacoma Intl. Airport (SEA) to Gardermoen Airport (OSL)?
We understand that life can throw the odd curveball, so we’ve made it as simple as possible for you to cancel your flight online. Just head to the Customer Service Portal and follow the instructions.
How do I find cheap flights from Sea-Tac Airport to OSL that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for SEA to Gardermoen Airport (OSL) flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Sea-Tac Airport to OSL?
SeaTac to Ullensaker is around 7,300 kilometers, so be prepared to spend a while in the air. Make sure you pack all the essentials, from your headphones to your hoodie. Toss in some snacks to nibble on throughout your journey too.
Which airlines fly direct from SEA to OSL?
Flying directly between Seattle - Tacoma Intl. Airport (SEA) and Gardermoen Airport (OSL) isn’t possible at this time. However, you’ll still be able to book a flight to Ullensaker with at least one stop.
Are SEA to OSL flight tickets cheaper when they're purchased at the last minute?
Booking last minute from SEA to Gardermoen Airport (OSL) can be hit-or-miss. You may be able to score a great bargain, but you could also completely miss out! If you’d rather play it safe and start your travel planning ahead of time, Expedia compares flight deals up to 12 months in advance. Just remember that not all airlines publish their prices so far in advance. Our top tip? Check back often as updates are made frequently.

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