SEA - OSL

$202 Find Cheap Flights from Seattle to Oslo Airport - Compare and Save

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 11/17. 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

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Everything you should know

Cheapest round-trip
$492
Typical prices: $502-$666
Icelandair
Tue 8/18Mon 8/24
SEA - OSL • 1 stop
Cheapest one-way
$202
Typical prices: $343-$449
Multiple Airlines
Tue 11/17
SEA - OSL • 3 stops
Top airlines
Cheapest • from $494 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
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Nonstop flights
Not available
There are currently no direct flights between Seattle and Oslo Gardermoen. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $682 (round-trip)
Shortest trip • 13h 20m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 24% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Oslo Gardermoen!
Flight Deals
Booking Insights
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

Tue, Aug 18 - Mon, Aug 24
Icelandair Logo
7:00 pm - 3:25 pm
SEA
-
OSL
11h 25m
1 stop
Icelandair Logo
1:50 pm - 11:45 am
OSL
-
SEA
30h 55m
1 stop
$492Icelandair
Mon, Aug 17 - Mon, Aug 24
Icelandair Logo
7:00 pm - 3:25 pm
SEA
-
OSL
11h 25m
1 stop
Icelandair Logo
4:30 pm - 11:45 am
OSL
-
SEA
28h 15m
1 stop
$492Icelandair
Tue, Nov 17 - Sun, Nov 22
Austrian Airlines Logo
8:09 am - 1:35 pm
SEA
-
OSL
20h 26m
2 stops
Austrian Airlines Logo
2:20 pm - 7:03 pm
OSL
-
SEA
37h 43m
2 stops
$492Austrian Airlines
Tue, Nov 10 - Thu, Nov 19
Multiple Airlines Logo
8:40 am - 5:40 pm
SEA
-
OSL
24h 00m
2 stops
Multiple Airlines Logo
6:15 am - 6:22 pm
OSL
-
SEA
21h 07m
2 stops
$492Multiple Airlines
Wed, Nov 4 - Thu, Nov 12
Lufthansa Logo
2:50 pm - 5:40 pm
SEA
-
OSL
17h 50m
1 stop
Lufthansa Logo
6:15 am - 12:00 pm
OSL
-
SEA
14h 45m
1 stop
$493Lufthansa
Mon, Jan 4 - Fri, Apr 2
United Airlines Logo
5:00 am - 5:40 pm
SEA
-
OSL
27h 40m
2 stops
United Airlines Logo
11:45 am - 4:59 pm
OSL
-
SEA
14h 14m
1 stop
$493United Airlines
Fri, Nov 6 - Sun, Nov 15
Lufthansa Logo
2:50 pm - 5:40 pm
SEA
-
OSL
17h 50m
1 stop
Lufthansa Logo
6:15 am - 12:00 pm
OSL
-
SEA
14h 45m
1 stop
$494Lufthansa
Wed, Aug 19 - Tue, Aug 25
United Airlines Logo
6:50 pm - 5:55 pm
SEA
-
OSL
14h 05m
1 stop
United Airlines Logo
6:55 am - 6:32 pm
OSL
-
SEA
20h 37m
2 stops
$496United Airlines
Sat, Sep 26 - Thu, Oct 8
Scandinavian Airlines Logo
3:55 pm - 9:00 pm
SEA
-
OSL
20h 05m
1 stop
Scandinavian Airlines Logo
5:15 pm - 1:45 pm
OSL
-
SEA
29h 30m
1 stop
$509Scandinavian Airlines
Fri, Sep 25 - Thu, Oct 8
Scandinavian Airlines Logo
3:55 pm - 4:35 pm
SEA
-
OSL
15h 40m
1 stop
Scandinavian Airlines Logo
3:05 pm - 1:45 pm
OSL
-
SEA
31h 40m
1 stop
$509Scandinavian Airlines
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.

How much is a round-trip flight from Seattle to Oslo Gardermoen Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Oslo Gardermoen Airport departing in November.

Flight prices are below average for this route right now.

Flights to Oslo Gardermoen Airport from Seattle usually cost between $502 and $666 in November.
The lowest price found in the past 5 days was $492 on Multiple Airlines (Nov 10-Nov 19).

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 $422 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $684 and $675 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 season

November

Cheapest flight

$202
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 17% increase in price.
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 5 days, the lowest price for a flight from Seattle to Oslo Gardermoen Airport was $202 for a one-way ticket and $492 for a round-trip.

  • Do I need a passport to fly between Seattle and Oslo Airport?

    Yes, you’ll need a passport to travel to Oslo Airport from Seattle.

  • 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?

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

  • What is the most popular layover when flying to Oslo Airport from Seattle?

    Reykjavik is the most popular layover city among KAYAK users traveling from Seattle to Oslo Airport.

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

    The two airlines most popular with KAYAK users for flights from Seattle to Oslo are Delta and KLM. With an average price for the route of $683 and an overall rating of 7.8, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $647 and an overall rating of 7.8.

  • 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 travelers 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. Booking your flights between Seattle and OSL can sometimes prove cheaper using this method.

  • 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 5 airlines serving 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.
7.8
KLMOverall score based on 1552 reviews
7.3Food
7.2Entertainment
7.8Boarding
8.4Crew
7.7Comfort
Airline reviews

I think I previously submitted my feedback about flight lead Katherine in a different field by mistake. Please see those comments. Comments for Hyd to AMS are it was good. The flight lead and service met expectations for satisfactory high quality service but the flight lead did not stand out as exceptional as did the leads on the other two flights so I don’t remember anything specific one way or the other besides the fact I was satisfied.

10.0 ExcellentEmily, Jul 2026
ORD - MSP
Read more KLM reviews

I think I previously submitted my feedback about flight lead Katherine in a different field by mistake. Please see those comments. Comments for Hyd to AMS are it was good. The flight lead and service met expectations for satisfactory high quality service but the flight lead did not stand out as exceptional as did the leads on the other two flights so I don’t remember anything specific one way or the other besides the fact I was satisfied.

Had to cancel and rebook, KLM connection was cancelled prior to departure, ended up flying to Munich on non-Delta carrier.

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

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.

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.

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!

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

Transfer at CDG to connecting KLM flight to Amsterdam was a NIGHTMARE. LONG WALKWAYS, NO MOVING WALKWAYS, POOR signage, Have to take a train & No staff visible to help navigate the maze. AVOID TRANSFER AT CDG AT ALL COST.

Comfortable seats. Nice service online. Short flight, so not a lot of time to enjoy.

The flight was done by SkyWest only WIFI no entertainment center are available on the CRJ

Everything worked smoothly, never had a concern with the flight from start to finish.

My flight was delayed by 4 hours in 30 minute increments. The gate agents were amazing but the communication was not. We were told that there was a maintenance issue but they didn't know what it was. That didn't inspire confidence. Then they said they found it and it was fixed and the pilot just needed to sign off. Then the pilot needed to talk to the other pilot from the arriving flight and we'd be fine. Then we were waiting for the pilot to call back. Then the maintenance issue wasn't fixed. Then they decided we were getting a new plane (why didn't they decide this earlier??). Fine. But then they announced we were changing gates AND terminals. And we were boarding in 20 minutes. So we all had to run to the new terminal gate. We could have taken off at that time, but we then had to wait for all the people who rebooked on a different flight to book this flight again. That took 30+ minutes because there was only one gate agent. When everyone ditched this flight, I saw it as an opportunity to upgrade to comfort. Delta, the greedy jerks they are, charged me $121. After their delay, their fault, their issues, couldn't even discount an upgrade. They only handed out $12 meal vouchers for the delay. I can't even get a snack from starbucks for that.

Love me some Delta. One of the few airlines to recognize and support veterans. Easy boarding, flight was on time and arrived early and the flight attendants were excellent on this flight.

We sat on the runway for over an hour before departure. That was unwelcome.

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

Snacks and included beverages were appreciated. Boarding went smoothly. Plenty of overhead bin space. Seats get very uncomfortable after a couple of hours. After waiting 10 painful minutes for my walker, a very nice Delta guest agent pushed me in a wheelchair to the gate. It was finally delivered to me after another 15 minutes . Our checked bag was on the carousel long b4 I was able to retrieve it. Fortunately it was still there but somewhere along the way the straps we used to secure it were removed and and were not reattached. Wish I had made note of the agents name.

The cabin temperature was nice and cool. The wifi was not working.

Really good. Everything went smoothly. That's what I hope for when I'm on a long flight, especially with multiple changes. Thank you SAS.

Terrible customer service. The flight attendants were rude. We experienced significant turbulence for a large portion of the flight and there was very little check in from the flight deck. The space was extremely limited to the point where it felt like torture. Never again

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

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.

I really enjoyed how clean and big the aircraft was, as well as how friendly the crew was.

Great experience. Typically do klm to Amsterdam but may start taking this flight in future - greatxexperience.

The food was wonderful! The blankets and pillows were a nice touch and the staff were very accommodating, making frequent rounds to offer food, drink, etc. We were also told in advance when to expect meals to arrive, which is thoughtful. I liked the early notification about the lack of headphones as well, although unfortunately I'm not sure we received on for the first leg of the trip, which would have been nice to prepare for. The seats are a bit tight, and the bright monitors on the wall were on during an overnight trip, making it difficult to sleep for those close to them. .

Standard short hop flight. No food, no entertainment. Just get in, get something to drink, and try to be as comfortable as you can for an hour.

Best airline to travel on a budget- really like their reasonably priced access to the SAS lounges where available.

I DO NOT recommend Iceland air...missed connecting flight.....paid for isle seat upgrade for health reasons...had to do that over....baggage left in the rain so clothes got soaked other items ruined....called customer * dont care* service

The ticket was reserved in my name but not paid for by underpricer. Alaska airlines was unable to issue my ticket (could not connect the ticket with the PNR) due to an error with underpricer and I spent the better part of 2 hours at the ticket counter trying to rectify.

Damage May baggage and I report the airport agant and they see it

I had no idea that my ticket only paid for my right to get on the plane. They charged me $130 for my carry-on bag because it was 1 inch too big she claimed but it wasn’t! Then they wanted another fee for everything. I had no idea that Icelandair had changed to such a bargain basement airline. I was very disappointed.

The staff was kind and helpful. There was no food, and you needed to bring your own earphones to use the entertainment, which I didn’t know.

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

Everything was good. Only issue comes from being vegan and flying. The food options are super limited.

Overall good for an economy fare. IMO the movie selection could be improved. Great that you can now connect bluetooth headphones to the entertainment system.

7 hours 15 min flight from SEA to Iceland with no inflight entertainment and no power to charge your own devices, also no meal service, not even any snacks/cookies. You have to buy food and the options are extremely limited (i.e. ham and cheese sandwich and spicy cup noodles). I didn't think Iceland air was a budget airline, maybe I was wrong, the cost of the ticket didn't feel like it though.

Very nice flight, easy connections in Keflavík, and friendly crew.

The flight was cancelled, so why are you asking me how the flight was?

It would have been nice if my luggage had made it onto my connecting flight as well. Now I have to wait for my luggage to be delivered and that might take a while, which certainly put a damper on the entire experience.

Biggest gripes were that the seats were extra narrow as the 4-in-the-middle taper down. As with most flight, too little leg room hurts my aging hips. Also changing the flight time to 3 hours earlier meant that we had a terribly long lay-over in one of the world's most boring airports

German crew were very kind. Food was okay but can be better, especially bread was not good, Garbage collection was very poor.

Great! Great staff, great food, great flight :) Keep up the good work!!!

It was good. Nice entertainment selection to keep me busy for the timeframe I wasn't sleeping. Professional, courteous and attentive crew.

They lost my bags and I didn't get them for 4 days after. This also happened to about 30 other people on my flight from fra to MAA (I know bc we were all filing claims in line together from the same flight.)

Flight took off arrive Frankfurt fine ... and then the Pilot parked the plane for 20 minutes while waiting for a steps vehicle to arrive so we all could deplane. This caused us to miss our Naples flight by 6 minutes while running to the next gate.. We are aware of 3 others who also miss their flight. Lufthansa Support said "why miss your flight, your flight arrived on time?" We explained, they provided another flight many hrs later, no meal voucher because our "flight was ontime".

They help we received from the check in crew and boarding cr

Both flights were on time. Great selection of movies on board. My luggage didn't get lost, which made my trip very easy.

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

Information on your arrival and departure airports