SEA - OSL

$168 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 4/22. 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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Oslo.
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Everything you should know

Cheapest round-trip
$356
Typical prices: $447-$588
Icelandair
Mon 4/13Wed 4/29
SEA - OSL • 1 stop
Cheapest one-way
$168
Typical prices: $244-$409
Icelandair
Wed 4/22
SEA - OSL • 1 stop
Top airlines
Cheapest • from $356 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
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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
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Top layover airports
Cheapest • Avg $703 (round-trip)
Shortest trip • 12h 29m (one-way)
Insights
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When to book
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 11% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 24% price drop
Most popular
Good to know
Good to know
+1
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Good to know
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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

Mon, Apr 13 - Wed, Apr 29
Icelandair Logo
3:40 pm - 12:35 pm
SEA
-
OSL
11h 55m
1 stop
Icelandair Logo
1:50 pm - 5:55 pm
OSL
-
SEA
13h 05m
1 stop
$356Icelandair
Mon, Apr 13 - Mon, Apr 27
Icelandair Logo
3:40 pm - 12:35 pm
SEA
-
OSL
11h 55m
1 stop
Icelandair Logo
1:50 pm - 5:55 pm
OSL
-
SEA
13h 05m
1 stop
$362Icelandair
Wed, Apr 22 - Wed, Apr 29
Icelandair Logo
7:00 pm - 3:25 pm
SEA
-
OSL
11h 25m
1 stop
Icelandair Logo
1:50 pm - 8:40 pm
OSL
-
SEA
15h 50m
1 stop
$397Icelandair
Tue, Apr 14 - Sun, Apr 26
Icelandair Logo
7:00 pm - 12:35 pm
SEA
-
OSL
32h 35m
1 stop
Icelandair Logo
1:50 pm - 8:40 pm
OSL
-
SEA
15h 50m
1 stop
$399Icelandair
Fri, Apr 24 - Fri, May 8
Icelandair Logo
7:00 pm - 3:25 pm
SEA
-
OSL
11h 25m
1 stop
Icelandair Logo
1:50 pm - 5:55 pm
OSL
-
SEA
13h 05m
1 stop
$405Icelandair
Fri, Apr 24 - Sun, May 10
Icelandair Logo
7:00 pm - 3:25 pm
SEA
-
OSL
11h 25m
1 stop
Icelandair Logo
4:30 pm - 5:55 pm
OSL
-
SEA
34h 25m
1 stop
$407Icelandair
Thu, Apr 30 - Sun, May 10
Icelandair Logo
7:00 pm - 12:35 pm
SEA
-
OSL
32h 35m
1 stop
Icelandair Logo
4:30 pm - 5:55 pm
OSL
-
SEA
34h 25m
1 stop
$416Icelandair
Tue, Apr 7 - Fri, Apr 24
Icelandair Logo
7:00 pm - 12:35 pm
SEA
-
OSL
32h 35m
1 stop
Icelandair Logo
1:50 pm - 5:55 pm
OSL
-
SEA
13h 05m
1 stop
$422Icelandair
Tue, Apr 7 - Tue, Apr 21
Icelandair Logo
7:00 pm - 12:35 pm
SEA
-
OSL
32h 35m
1 stop
Icelandair Logo
1:50 pm - 8:40 pm
OSL
-
SEA
15h 50m
1 stop
$423Icelandair
Mon, Apr 13 - Sat, Apr 25
Icelandair Logo
3:40 pm - 12:35 pm
SEA
-
OSL
11h 55m
1 stop
Icelandair Logo
4:30 pm - 8:40 pm
OSL
-
SEA
13h 10m
1 stop
$424Icelandair
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 April.

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 $421 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $754 and $662 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 2 weeks before departure, which saves you about 11% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$168
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 12% 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 3 days, the lowest price for a flight from Seattle to Oslo Gardermoen Airport was $168 for a one-way ticket and $356 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 $701 and an overall rating of 7.9, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $669 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.
7.9
DeltaOverall score based on 8292 reviews
8.1Boarding
7.9Comfort
8.5Crew
7.2Food
7.8Entertainment
Airline reviews

First class is comfortable. Enjoyed a movie and was able to relax compared to coach.

10.0 ExcellentAnonymous, Mar 2026
ATL - DTW
Read more Delta reviews

First class is comfortable. Enjoyed a movie and was able to relax compared to coach.

Loved flying First Class. Very comfortable. The seat was amazing. Enjoyed a movie and was able to relax so much better than in coach.

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The WiFi was not working. That made for a long flight.

With Aeromexico it ended up good but with Delta it was bad because we did everything through Delta... Showed up at the Delta terminal... It was the wrong place! Nothing ever told us to go to the Aeromexico terminal. It said "in partnership with Aeromexico" but I was never instructed to check in with them or go to their terminal. We had to haul @$$ running through the airport and almost didn't make it thanks to this poor communication. 👎🏽

Absolutely no communication on why there's a delay and multiple flight time reschedules. I would have canceled the flight and drove back home if I known it was going to be rescheduled 3 or 4 times.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

Crew members were excellent. The seat wasn’t the best as well as a food options.

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.

5 of my 7 pieces of luggage are missing and they cant call to find out where it is. I have to fill out a form and wait for them to mail it to me in several days (if they find it). That does not work for my travel itinerary. I need my full ticket cost refunded please.

Fantastic. The only thing - out of my six luggage one was lost in Copenhagen, however it was delivered Home 3 Days later so all great..

The crew was friendly, the flight was pleasant. Thank you for your service!

Our trip plan from Kayak stated we were flying SAS. That was not true. The first leg was a Delta flight. We wasted 25 minutes before finding out to check in with the correct airline. Then our SAS flight for the second leg arrived 25 minutes late, and our third leg flight with SAS closed the gate knowing the flight delay was SAS’s fault, and that this flight would only be backed up 5 minutes. The final kicker was that between Delta and SAS, they lost all our checked luggage.

Flight was completely full January 9th? I problem i had the stewardess was bumping into me constantly walking by? very annoying.. on Austrian air I dint have this issue at all...

Amazing! Everyone was so nice and the food was so good!!

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

I was surprised how good an American airline can be - I was really impressed.

Waiting area on top of stairs before Boarding the bus wasn’t great. Took a long time to load the bus to gate.

Iceland Air severely damaged a checked bag. Additionally, the gate agent caused issues for many passengers who had standard-sized onboard bags that would have passed inspection by any other airline.

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.

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

The customer service was unbeatable from the wheelchair assist team to the flight attendants. The pilot also did an excellent job managing the turbulence.

Delays at check-in, seemed like they were short ground staff at the time and some passengers needed extra processing.

Problems checking in both on the laptop and on the app. No free seating available at check-in as advertised - must pay for EVERY seat between $23 and $75. No way to cancel seat choice. App menus and site menus are not responsive, and some items are impossible to find. Crew and mobile assistance are friendly and helpful.

Food - Non-Existent. You pay for everything. It is strictly Pay-to-Play!

Again, we paid $ 328.00 for specific seats are were assigned those seats.

Having been prepared for paying for everything on board other than water, coffee and tea the service was OK. Food and drink is expensive but the food was OK if limited in scope. Plane was clean and obviously well serviced. After complaining about having to walk in wind and rain to a get a bus to the airport the same thing happened at Portland. I’m sure you could get a terminal gate flight, complimentary food and drink for not much more money without traipsing through rain and slush in Reykjavik. Not bad but not great.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

Economy Priority seats are extremely uncomfortable. There is no way to escape the boxed in feeling, particularely because the distance between to rows are too short, the hard edge of the front row is keeping legs confined. There is no elevated place to put your feet. I am of average, European size.

Terrible. Both flights were significantly delayed, no luggage, made me check my small bag when many, many others had much larger carry-ons, not even a bottle of water . . . I will not fly Discover Airlines again.

I was deceived on the Kayak site expecting a ticket, but instead finding a "standby" reservation. When I tried to change the ticket, I paid almost twice the price of the original ticket. Then, the airline refused to give me the reserved seat I had chosen and paid for. I think I deserve a refund for this leg of my trip because I was doubly charged and did not receive what I had paid for. I put in a complaint with Lufthansa because the ticket was sold originally sold as a flight they listed. Someone here needs to take responsibility.

Excellent service; they helped me reschedule so I can fly in an earlier flight

I had a good comfortable seat. There was nearly an hour delay. There was an accident with the champagne, but I was well compensated. These things happen sometimes.

Very please with the seating that the Kayak staff booked for us!

Worth every penny to upgrade to BC. Treated and felt more like First Class

I paid for a very expensive Business Class seat to and from Cairo Egypt from Charleston SC. There was partnership from states to London using American Airlines. That leg was amazing. The British Airlines leg was a joke. They used the standard no leg room 3 by 3 seats. A tray was put on the middle seat. The trip was 5 hours, from London to Cairo, thus my BC purchase. There was no screen proving tv/movie options, only a small device plug. The fold down tray and the bag of peanuts were typical of normal short run flying. The one toilet was located in the galley. We all got to know each other well. This was my first and last trip with British Airlines. I now understand why they would NEVER give me a seat chart so that I could make a selection.prior to departure. It honestly would not have made a difference, there were less than 50% of occupied seats. Apparently everyone got the memo but me. I have never felt so cheated as with that trip, got to so another going back to London, yeah. I will be sending a letter to customer service and asking for a refund. I will be photos comparing the two BC legs. OH, one more thing. The FC ticket holders got bulkhead and exit row seats. I know they had to be thrilled

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

Late! Late and late! More than 1hr 30mn. This sucks when it is the last of a 4 flight journey. I missed my dinner! Which is not nice on Valentine’s Day!!! But better than the gate next to us, the poor Chinese people were rebooked to the next day flight. AA had to call security as it became very heated with the passengers! It was a mess at DFW that afternoon/evening. I wish they had some food for the people who travel as part of international journey. Indigo does it in India and it is fantastic.

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

Our Jackson, Mississippi to Dallas Fort Worth flight was delayed on 1/19/26.. This was changed to Jackson to Charlotte in the last minute because of this delay. This started some kind of disconnect between American Airlines and British Airways bookings. We could not go past the passport control in London Heathrow. I had to go to the counter and waited for more than 30 minutes to get a new boarding pass. Problems did not end there. Somehow our entire return flight was canceled by someone. I had to make several phone calls over several days to fix the problem – this was not easy from India. Looks like there was some kind of disconnect between two airlines or some agent did not do it right. I’m anxious to know what went wrong.

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

Information on your arrival and departure airports