SEA - OSL

C$ 509 Find Cheap Flights from Seattle to Oslo

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 9/10. 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

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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Cheap Flights from Seattle to Oslo (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 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, 3 Dec - Sun, 7 Dec
Icelandair Logo
2:35 p.m. - 11:35 a.m.SEA-OSL
12h 00m1 stop
Icelandair Logo
9:30 p.m. - 5:00 p.m.OSL-SEA
28h 30m1 stop
C$ 578Icelandair
Find Deal
Wed, 3 Dec - Sun, 7 Dec
Icelandair Logo
2:35 p.m. - 11:35 a.m.SEA-OSL
12h 00m1 stop
Icelandair Logo
9:30 p.m. - 5:00 p.m.OSL-SEA
28h 30m1 stop
C$ 579Icelandair
Find Deal
Wed, 3 Dec - Sun, 7 Dec
Icelandair Logo
2:35 p.m. - 11:35 a.m.SEA-OSL
12h 00m1 stop
Icelandair Logo
9:30 p.m. - 5:00 p.m.OSL-SEA
28h 30m1 stop
C$ 601Icelandair
Find Deal
Tue, 28 Oct - Fri, 7 Nov
British Airways Logo
9:20 a.m. - 2:10 p.m.SEA-OSL
20h 50m2 stops
British Airways Logo
7:10 a.m. - 7:14 p.m.OSL-SEA
21h 04m2 stops
C$ 677British Airways
Find Deal
Mon, 11 Aug - Mon, 25 Aug
KLM Logo
5:40 p.m. - 6:35 p.m.SEA-OSL
15h 55m1 stop
KLM Logo
7:15 p.m. - 11:35 a.m.OSL-SEA
25h 20m1 stop
C$ 701KLM
Find Deal
Wed, 3 Sep - Tue, 30 Sep
British Airways Logo
3:40 p.m. - 7:15 p.m.SEA-OSL
18h 35m2 stops
British Airways Logo
7:25 p.m. - 11:35 a.m.OSL-SEA
25h 10m1 stop
C$ 703British Airways
Find Deal
Sun, 14 Sep - Mon, 29 Sep
Scandinavian Airlines Logo
4:20 p.m. - 10:35 p.m.SEA-OSL
21h 15m1 stop
Scandinavian Airlines Logo
11:05 a.m. - 10:01 p.m.OSL-SEA
19h 56m2 stops
C$ 735Scandinavian Airlines
Find Deal
Wed, 3 Sep - Mon, 29 Sep
Scandinavian Airlines Logo
4:00 p.m. - 4:35 p.m.SEA-OSL
15h 35m1 stop
Scandinavian Airlines Logo
9:55 a.m. - 10:01 p.m.OSL-SEA
21h 06m2 stops
C$ 757Scandinavian Airlines
Find Deal
Fri, 24 Oct - Mon, 10 Nov
Lufthansa Logo
10:00 a.m. - 12:15 p.m.SEA-OSL
17h 15m2 stops
Lufthansa Logo
6:15 a.m. - 12:10 p.m.OSL-SEA
14h 55m1 stop
C$ 760Lufthansa
Find Deal
Thu, 4 Dec - Mon, 15 Dec
Lufthansa Logo
1:40 p.m. - 5:45 p.m.SEA-OSL
19h 05m2 stops
Lufthansa Logo
6:15 a.m. - 12:10 p.m.OSL-SEA
14h 55m1 stop
C$ 761Lufthansa
Find Deal
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$ 713 (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$ 1,189 and C$ 1,021 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 17% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 6 weeks before departure.


Good to know

Low seasonJanuary
Cheapest flightC$ 509
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly (16% more expensive on average)
Flight from Seattle to Oslo

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 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$ 369 for a one-way ticket and C$ 419 for a round-trip.

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

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

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

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

  • Which airline alliances offer flights from Seattle to Oslo?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Oslo, with SkyTeam 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$ 627 and an overall rating of 7.8, KLM is the most popular choice. Scandinavian Airlines is also a great choice for the route, with an average price of C$ 762 and an overall rating of 7.3.

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

    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.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Oslo 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?

    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 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?

    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 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.
7.8
KLMOverall score based on 1383 reviews
8.4Crew
7.3Food
7.8Boarding
7.7Comfort
7.1Entertainment
Airline reviews

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.

6.0 GoodSimon, Jul 2025STR - AMS
Read more KLM reviews

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

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

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

They only had vegetarian food left on the flight which I wasn’t happy about. I didn’t get any food to eat at all.

Overall very poor. Flight was disorganised, staff were rude and this is my second experience with KLM that I've had baggage go missing. It feels like, if you are an economy customer, KLM staff do not show you any care. I shall never fly with KLM again. Worst airline in Europe

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.

When my flight was changed from delays they were quick to rebook me.

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

Airline left me stranded in the U.S. gave me an unrequested refund of 40% of booking and canceled my trip back! When I asked why, the said “we don’t have to tell you why”. “But you can rebook”. Never again! Paid 2x and rebooked on Austrian. What a joke!

Painful seats for a 10 hour flight. There’s a very hard flat board in the seat that goes up to half the back and after 7 hours it gets impossible to find the right position to avoid the pain.

I paid for the seat with more leg room but on the day of my departure my seat was changed. I brought it to the airline costumer service and he was able to change it back. The person sitting next to me had the same exact issue.

No TV screen, free WiFi or power outlets, but seats were comfortable, food and drinks were great, service was awesome!

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. .

Boarded with no problems. Sat on the tarmac for an hour before taking off. We were the last ones on our connecting flight. Didn't think we were going to make it. Our flight to Iceland was similarly delayed. When we've flown other airlines, pilots have tried to make up time while in the air. This doesn't seem to be something that Icelandair does. We made all of our flights, but it was stressful and we didn't think it was going to happen based on the time we arrived.

The flight was delayed and as a consequence we missed our connecting flight. Were stuck for another 6h in Reykyavik. Appreciated that we got a generous food voucher at least. Would have liked to see more information upon arrival including a person waiting for connecting flight travellers and informing already that we will not catch the flight and directing us to the office dealing with the matter; unfortunately that didnt happen and we hence first needed to find out whether flight had indeed left already and then locate the adequate office to help us with booking us on the next connecting flight. Also my suitcase broke and it is not clear whether it is happened on the leg with Iceland Air from DC to Reykyavik or on the leg with Lufthansa from Reykyavik to Frankfurt. Finally, understood that it is a low cost company but at least provision of earplugs for free would have been nice, instead of making them buy.

Great experience on Icelandair flight from Newark to Amsterdam by way of Reykjavík. Courteous and professional staff. Food was solid. Service - outstanding. Cabin was a little warm.

Good service. No complementary food for international flight. WiFi kinda pricey. Got the job done for the right price.

Still one of my favorite airlines, but the entertainment options were a bit lacking. It didn't help that my screen didn't work on one of the legs of the trip.

The plane was very small and the aisle was so narrow that every time someone walked by they rubbed against me, so it was very 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.

For a four hour flight, I was disappointed that everything was for purchase except for coffee, tea, or water. The disembarking in Iceland was so inefficient and time-consuming. We landed and stopped in the middle of the tarmac, had to disembark in the rain, and then squeeze into a bus which took us to the airport. Crazy! How does that work in winter?

Paid for a Premium seat...minimal recline, no footrest. Maybe slightly wider than a cheap economy seat. Zero chance of getting any rest on this plane

Our flight was delayed for over an hour due to weather, and it had already been a long travel day. However, the crew was calm and compassionate, listening to every complaint with genuine concern. They got us home safely without incident, in spite of all of the obstacles. I’m grateful.

Hate their old flights, boatding, food and services. Very poor quality

Insulting. Lufthansa flight from Munich to EWR had us getting our luggage when we were told in Florence that it would follow us to Indianapolis. It did not. Then very slow security in EWR caused me and three other passengers from Lufthansa flight from Munich to miss the boarding closure. Behind me were two elderly grandparents and their ten year old grandson. We were all refused entry on a plane to Indy that was still at the gate. The doors had not even closed inside the terminal yet. No apologies or compensation offered. Not even a meal voucher let alone a free hotel stay for our inconvenience. I m not sure what the other three passengers behind me did ( they were elderly with a grandson, recall), but I stated 12 hours overnight in a chilly EWR airport until next flight to Indy at 850 next morning.

The food could be better, more snacks. And have some plugs to chargue the phone.

The pasta in the evening meal was tasteless. Otherwise, the flight was okay.

Everything was really great just The aircraft was too old and sounded it will break during takeoff

Seating was average for a first class seat. It very modern. I expected better.

Flight was a little late. The crew was courteous, food ok

Bad! Disaster!! The LH419 was cancelled after 4 hrs on board with no AC and no toilets

Poor food on flight between Toronto and Stockholm Airport Toronto too crowded

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

Information on your arrival and departure airports

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