SEA - OSL

C$ 534 Find Cheap Flights from Seattle to Oslo Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Oslo Gardermoen departing on 21/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Oslo Gardermoen Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Oslo, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Oslo, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Seattle to Oslo Gardermoen (SEA-OSL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Oslo Gardermoen that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Oslo Gardermoen

Wed, 1 Apr - Sun, 3 May
Icelandair Logo
7:00 p.m. - 12:35 p.m.SEA-OSL
32h 35m1 stop
Icelandair Logo
4:30 p.m. - 5:50 p.m.OSL-SEA
34h 20m1 stop
C$ 553Icelandair
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Tue, 17 Mar - Wed, 8 Apr
Scandinavian Airlines Logo
1:40 p.m. - 3:20 p.m.SEA-OSL
17h 40m2 stops
Scandinavian Airlines Logo
1:05 p.m. - 10:16 p.m.OSL-SEA
18h 11m1 stop
C$ 681Scandinavian Airlines
Find Deal
Tue, 17 Mar - Wed, 8 Apr
Scandinavian Airlines Logo
10:55 a.m. - 2:15 p.m.SEA-OSL
19h 20m2 stops
Scandinavian Airlines Logo
1:05 p.m. - 10:16 p.m.OSL-SEA
18h 11m1 stop
C$ 682Scandinavian Airlines
Find Deal
Sun, 30 Nov - Wed, 24 Dec
Icelandair Logo
2:35 p.m. - 11:35 a.m.SEA-OSL
12h 00m1 stop
Icelandair Logo
1:10 p.m. - 5:00 p.m.OSL-SEA
12h 50m1 stop
C$ 689Icelandair
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Wed, 1 Apr - Tue, 7 Apr
British Airways Logo
1:35 p.m. - 11:30 p.m.SEA-OSL
24h 55m1 stop
British Airways Logo
11:15 a.m. - 9:46 p.m.OSL-SEA
19h 31m2 stops
C$ 700British Airways
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Tue, 17 Mar - Wed, 8 Apr
Delta Logo
5:40 p.m. - 6:50 p.m.SEA-OSL
17h 10m1 stop
Delta Logo
9:20 a.m. - 3:50 p.m.OSL-SEA
15h 30m1 stop
C$ 703Delta
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Thu, 19 Feb - Tue, 3 Mar
British Airways Logo
7:15 a.m. - 2:15 p.m.SEA-OSL
22h 00m2 stops
British Airways Logo
11:45 a.m. - 4:55 p.m.OSL-SEA
14h 10m1 stop
C$ 707British Airways
Find Deal
Wed, 3 Dec - Sun, 7 Dec
Lufthansa Logo
3:10 p.m. - 5:40 p.m.SEA-OSL
17h 30m1 stop
Lufthansa Logo
6:05 a.m. - 7:16 p.m.OSL-SEA
22h 11m2 stops
C$ 710Lufthansa
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Fri, 28 Nov - Wed, 24 Dec
Delta Logo
2:05 p.m. - 2:25 p.m.SEA-OSL
15h 20m1 stop
Delta Logo
12:40 p.m. - 11:50 a.m.OSL-SEA
32h 10m1 stop
C$ 713Delta
Find Deal
Sun, 30 Nov - Tue, 23 Dec
Lufthansa Logo
3:10 p.m. - 5:30 p.m.SEA-OSL
17h 20m2 stops
Lufthansa Logo
11:50 a.m. - 1:20 p.m.OSL-SEA
34h 30m1 stop
C$ 770Lufthansa
Find Deal

Everything you should know

Top airlines
Icelandair
Cheapest • from C$ 553 (round-trip)
KLM
Best reviews • 7.7 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
January
Cheapest • 23% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
C$ 553
Overall average: C$ 830
Icelandair
Wed 1/4Sun 3/5
SEA - OSL • 1 stop
Cheapest one-way flights
C$ 534
Typical prices: C$ 493-C$ 692
Delta
Wed 21/1
SEA - OSL • 1 stop
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We hope you love your trip to Oslo Gardermoen!
Booking Insights

KAYAK's insights & trends for Seattle to Oslo Gardermoen flights

Get data-powered insights and trends into flights from Seattle to Oslo Gardermoen to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Seattle to Oslo Gardermoen Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Oslo Gardermoen Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Oslo Gardermoen Airport is January, where tickets cost C$ 647 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is C$ 1,203 and C$ 1,022 respectively.

How far in advance should I book a flight from Seattle to Oslo Gardermoen Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Oslo Gardermoen Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Oslo Gardermoen Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.

Good to know

Low seasonNovember
Cheapest flightC$ 534
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly (22% more expensive on average)
Flight from Seattle to Oslo Airport

When to book flights from Seattle to Oslo Gardermoen

Are your dates flexible? Find out the best times to travel from Seattle to Oslo Gardermoen based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Seattle to Oslo Airport flights

  • Why should I upgrade to a Business Class ticket for my flight from Seattle to Oslo Airport?

    There are several benefits to upgrading to Business Class on a journey from Seattle to Oslo Airport with an airline like British Airways or Emirates. Take advantage of more legroom, flat seats, and plentiful amenities. Gain access to premium lounges, enjoy fine food, and receive personalized attention. These changes improve your comfort, convenience, and overall traveling experience.

  • Which family-friendly airline can I consider for my flight from Seattle to Oslo Airport with the kids?

    Airlines like Lufthansa or Norwegian Air Shuttle are good options for family trips from Seattle to Oslo Airport. Both airlines pride themselves on being family-friendly, providing facilities and services to keep kids occupied. Families with young passengers can benefit from their help, kid-friendly meals, and in-flight entertainment selections. While Norwegian Air Shuttle has a special kids' entertainment area on its in-flight entertainment system, Lufthansa offers a program called "Flying Lab" that features educational games.

  • What are the public transportation options from Oslo Airport to the city center?

    You have various public transportation choices from Oslo Airport to the city center. Oslo Central Station is reached from the airport via the NSB regional rail and the Airport Express rail (Flytoget). Bus service to the city center is also available via the Airport Express Coach (Flybussen) and bus line 380.

  • Are airlines flying from Seattle to Oslo Airport suitable for passengers with limited mobility?

    Yes, American Airlines and Avianca are ideal for travelers with limited mobility from Seattle to Oslo Airport. To ensure a comfortable journey, they offer specialized help like wheelchair assistance, pre-boarding, and other services. Also, passengers can check any necessary mobility aids, such as wheelchairs or scooters. Passengers occasionally even qualify for a free supplementary seat for a caretaker.

  • What is the cheapest flight from Seattle to Oslo Gardermoen Airport?

    In the last 3 days, the lowest price for a flight from Seattle to Oslo Gardermoen Airport was C$ 534 for a one-way ticket and C$ 553 for a round-trip.

  • Which airports will I be using when flying from Seattle to Oslo Airport?

    Seattle airport is called Seattle/Tacoma Intl and the only airport in Oslo Airport is Oslo Gardermoen.

  • Which aircraft models fly most regularly from Seattle to Oslo Airport?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Oslo Airport?

    Star Alliance, and SkyTeam are the airline alliances operating flights between Seattle and Oslo Airport, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Seattle to Oslo, KLM or Scandinavian Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Oslo are KLM and Scandinavian Airlines. With an average price for the route of C$ 603 and an overall rating of 7.7, KLM is the most popular choice. Scandinavian Airlines is also a great choice for the route, with an average price of C$ 774 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Seattle to Oslo Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Oslo Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Oslo Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Oslo Airport from Seattle is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Oslo Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Oslo Airport with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Oslo Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Oslo Airport from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to Oslo Gardermoen Airport

  • Seattle-Tacoma International Airport (SEA) serves Seattle, Washington, and Tacoma. SEA serves as a base for both Alaska Airlines and Delta Air Lines. It is located approximately 14 miles south of downtown Seattle.
  • The average carbon emissions per person on flights from Seattle to Oslo Airport stand at 8,794 lbs. However, you have the option to choose more environmentally friendly flights with Icelandair and Wideroe, as they offer breakouts that emit 33% less CO2 per person on this specific route.
  • Norwegian Air Shuttle and Lufthansa are renowned for having the most accommodating carry-on policies between Seattle and Oslo Airport (OSL). While Lufthansa offers reasonable size and weight restrictions for carry-on luggage, Norwegian Air Shuttle permits a higher carry-on weight allowance.
  • Unaccompanied minors between the ages of 5 and 11 are welcome to fly with Norwegian Air Shuttle from Seattle to Oslo Airport. They need the Unaccompanied Minor service to be purchased, the relevant paperwork to be filled out, and adherence to particular check-in and pick-up procedures.
  • For flights from Seattle to Oslo Airport, carriers, including Delta Air Lines and KLM, have accommodating pet policies. Depending on size and species, pets may fly with their owners in the cabin or as cargo on Delta Air Lines. Additionally, they offer specialized pet travel services. KLM provides pet transportation as cargo for larger animals and permits small dogs to travel in the cabin under certain conditions.

Reviews of the top 4 airlines flying from Seattle to Oslo Gardermoen

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Oslo. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Oslo Gardermoen? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.7
KLMOverall score based on 1406 reviews
8.4Crew
7.7Comfort
7.1Entertainment
7.8Boarding
7.3Food
Airline reviews

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

4.0 OkayMarcel, Oct 2025JFK - AMS
Read more KLM reviews

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

You should not have to pay for WiFi in business class

No vegetarian option was provided for the regular meal or the pre-landing snack.

The Scandinavian flight was excellent, however the second flight was partnered with TAP Portugal which was not so good. crowded gate area with no chairs, delayed flight, bad boarding process, no entertainment system onboard, and the baggage didn’t get to the carousel until well over an hour which caused our taxi that was waiting to leave. Love SAS, hate TAP.

Great logistics and timeliness as we arrived quite early. Flight smooth and fast. Excellent entertainment. Plane itself was a bit tired and the crew mostly indifferent. Baggage took forever but that’s on CPH. Would use SAS again for sure.

Baggage was mis-handled; food and grocery items in the baggage were damaged.

It was a good flight. Everyone was professional and the flight was smooth.

Service, food was outstanding. They make every effort to make sure that your long flight is as comfortable as possible. The only reason I did not rate them excellent is the way they handled our cancelled flight. They were great about re-booking except for the hotel. A communication breakdown ensued regarding who was booking the hotel for our overnight stay: the city where the flight was cancelled or the city where we were going to lay over for the night. In the end, neither of them did, so we ended up doing it ourselves and were extremely lucky to get a room at all. Given that, I still would not hesitate to fly with them anytime.

Will not recommend SAS for business travel. Food was so-so. Service was very good. First leg was very good. Second leg from Copenhagen to Barcelona was terrible. We paid a LOT for business class and to have seats worse than most coach seats with no entertainment and no charging available for 1/3rd of the whole trip was not acceptable. Very disappointing. I thought they were coming back in the U.S. with style, NOT YET.

I do not have a problem with the airline but both my two suitcases that were supposed to go from Hawaii to Copenhagen didn’t get on the plane in Seattle. I arrive on Monday the 21st at 10:30 in the morning. I did not get my two suitcases before Friday late afternoon that is unacceptable.

No choice of food. Needed to pay more even for a can of coke!!!

The seats were really close together and hard to get comfortable. The food was okay. The cheese was amazing! I loved the cold towels they gave us.

It was too cold in the plane my feet froze

Handling our luggage was the biggest issue - they lost it and we got it almost 3 days later. Really threw off the beginning of our trip and we really had to change our itinerary accordingly.

Seat was hard and uncomfortable and the temperature too warm and uncomfortable.

No meals included on this long international flight. Most airlines will offer you a meal when flying internationally. Not Icelandair. Your included choices are water and coffee. Poor customer service. The airport was also very confusing.

I flew Icelandair with my partner from Prague to the US. Overall flight time was around 12 hours, with a connecting flight in Iceland. I have flown internationally for years and with multiple airlines. Every airline serves you a meal when traveling internationally. Icelandair not only did not offer an inclusive meal, but they did not even offer a snack. The only things they served over our long flight was water and coffee. Ridiculous! Never again will I fly with Icelandair.

Best smelling onboard bathrooms ever. Even after use the whole flight. Biggest overhead bins. Most legroom in economy class. Great Icelandiic music. Really nice staff. Icelandair is awesome! (Don’t fly Air Canada! During the strike they lied about no flights available (I booked this flight myself) and hid the process to get money back on their website by obscuring menu titles, then made it difficult and time consuming to fill out. I’m Canadian. Don’t trust Air Canada!

It was good. The air plane is clean and staff were friendly.

Worst airline I’ve ever flown. Delayed 5.5 hrs, missed connecting flight, and missed an entire day of vacation. Zero customer service

Everything sucked. No food, one small glass of water, a tiny coffee, 5.5 hour delay with no customer service. Would never recommend flying them.

The crew was wonderful at check in, the gate and on board. Felt the luggage had more room than the passengers. The seats were smaller than most domestic U.S. airlines. I'm only 5'2" and I had little legroom. There were only 2 bathrooms in coach. Needed more. The flight was very smooth but not the most comfortable.

I booked extra leg room, due to seat neighbor i now consider extra shoulder and arm room as well. Seems like the seats shrink in width now The crew was very friendly and professional ( 100%). Food was good not great, breakfast was bad, a dry slice of bread would have been better. Facilities clean.

Luggage transfer in Chicago was not performed in time. I received my luggage at my destination two days later.

love the crews and my only problem was the delay at Frankfurt was very bad. I have travelled with Lufthansa for over 30 years now and this was cost me some planned business appointment

The flight delay made the connection a bit tight but that's outside the flight crew's control.

We just made it to our connecting flight. A long, long speed walk!

We didn't get the coffee with breakfast in the morning.. 30 mins lazer I asked flight attendant why don't we get coffee now at least.. after the breakfast..she said that captain announced possible turbulences fee minutes ago, which didn't ecplain why we didn't get it with the breakfast..breakfast was very poor btw..just little pastry which you can eat in 4 little bites. Turbulences fortunately didn't even happen.. but we didn't get that more than necessary coffee in the morning after the night flight with very poor sleep.. They just served breakfast 1 hour afzer we took off..at like 11 PM.. that doesn't make sense at all.. Also, flight attendants weren't very nice..they looked like they're not happy with their job.. :/

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

I think they overbooked Frankfurt to New York and bumped me off. This changed my return travel I arrived home about 4 hours late. Almost 24 total travel time Totally unacceptable Would not travel with United

We were moved twice on flights to the point we weren’t even on Lufthansa anymore. We had to fly united. Lost paid extra leg room twice. To top it all off we’re forced to pay $375 and $275, respectively for you luggage that was considered sports luggage. We were told it would be Lufthansa fares l, from the united desk, AND WE DIDN'T EVEN HAVE A LUFTHANSA FLIGHT! I’ll be calling once my trip is over on October 7th to all airlines and Kayak. This was ridiculous!

Everything went smoothly and the staff was very kind. I’m glad I purchased the extra leg room for my long flight; it was totally worth it. We were served 2 meals for a 9 hour flight which I was not expecting and they were very tasty. I appreciated them being vegetarian. Customs line in Munich was long; I had a choice to have a 1 hr 40 min layover or 2 hr 40 min layover; I took the longer layover which I was thankful for because my flight was delayed 30 minutes and there’s a good chance I would have missed my connecting flight. This was my very first international flight and I would fly Discover again without hesitation. Thank you for taking good care of me!

Everything you need to know for your flight from Seattle to Oslo Gardermoen

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