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Oslo Gardermoen

$275+ Cheap flights from Seattle (SEA) to Oslo Gardermoen (OSL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Oslo Gardermoen are usually found in January or November, booked 76 days in advance, depart on a Tuesday or Monday and return on a Saturday

Cheap flight deals from Seattle to Oslo Gardermoen

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Oslo Gardermoen (OSL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$358
(Ticket)

One-way from

$275
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$483
Provider with most accurate pricing for Seattle/Tacoma Intl-Oslo Gardermoen flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Oslo Gardermoen flights.
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From Seattle/Tacoma Intl to Oslo Gardermoen
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One-way flight from Seattle/Tacoma Intl to Oslo Gardermoen
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Highest demand for flights based on searches. 19% potential increase in price ($146 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Seattle to Oslo Gardermoen

Cheapest flights from Seattle to Oslo Gardermoen
Explore the most affordable flight options available from Seattle to Oslo Gardermoen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 6, 2025.

This Ticket deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/242:35 pmSEA - OSL
1 stop12h 00mIcelandair
Tue 12/91:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 11/5$358
This Mytrip deal was found by Cheapflights users on 11/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/242:35 pmSEA - OSL
1 stop12h 00mIcelandair
Sun 12/79:30 pmOSL - SEA
1 stop28h 30mIcelandair
Deal found 11/6$395
This oojo deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/42:35 pmSEA - OSL
1 stop12h 00mIcelandair
Mon 12/151:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 11/4$405
This oojo deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/22:35 pmSEA - OSL
1 stop12h 00mIcelandair
Tue 12/91:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 11/4$428
This oojo deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/52:35 pmSEA - OSL
1 stop12h 00mIcelandair
Thu 12/111:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 11/5$443
This Icelandair deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/32:35 pmSEA - OSL
1 stop12h 00mIcelandair
Sun 12/79:30 pmOSL - SEA
1 stop28h 30mIcelandair
Deal found 11/5$446
This Ticket deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/247:00 amSEA - OSL
2 stops23h 20mLufthansa
Tue 12/96:15 amOSL - SEA
1 stop14h 55mLufthansa
Deal found 11/5$450
This oojo deal was found by Cheapflights users on 11/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/292:35 pmSEA - OSL
1 stop12h 00mIcelandair
Tue 1/131:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 11/5$465

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Oslo Gardermoen that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 6, 2025.
Use the filters below to find and compare flights from Seattle to Oslo Gardermoen Airport that are best for you.

Fly from

Seattle

Fly to

Oslo Gardermoen

Route

Depart

Return

Price

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 12/4

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Mon 12/15

1:10 pm-5:00 pm

1 stop12h 50m

$417

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 12/3

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sun 12/7

9:30 pm-5:00 pm

1 stop28h 30m

$446

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 12/29

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Tue 1/13

1:10 pm-5:00 pm

1 stop12h 50m

$465

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 4/7

11:51 am-4:15 pm

2 stops19h 24m

Oslo Gardermoen

Tue 5/5

7:45 am-6:25 pm

1 stop19h 40m

$492

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 4/22

1:33 pm-4:35 pm

2 stops18h 02m

Oslo Gardermoen

Thu 4/30

12:50 pm-11:05 pm

2 stops19h 15m

$501

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 11/24

2:00 pm-12:55 pm

1 stop13h 55m

Oslo Gardermoen

Sun 12/7

6:05 am-7:16 pm

2 stops22h 11m

$502

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 12/4

4:48 pm-6:50 pm

1 stop17h 02m

Oslo Gardermoen

Mon 12/15

7:45 am-8:35 pm

2 stops21h 50m

$511

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 12/2

11:26 am-2:45 pm

2 stops18h 19m

Oslo Gardermoen

Tue 12/9

6:30 am-11:50 am

1 stop14h 20m

$512

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 12/5

7:35 am-1:50 pm

2 stops21h 15m

Oslo Gardermoen

Thu 12/11

6:30 am-4:21 pm

2 stops18h 51m

$515

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 2/15

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sun 2/22

9:30 pm-5:00 pm

1 stop28h 30m

$516

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 19 results
1
2

Compare providers for flights from Seattle to Oslo Gardermoen

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Oslo Gardermoen in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
business-class.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Oslo Gardermoen Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Oslo Gardermoen Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Oslo Gardermoen Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Oslo Gardermoen Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Oslo Gardermoen Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Oslo Gardermoen

Have a flexible travel schedule? Discover the best time to fly to Oslo Gardermoen from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Oslo Gardermoen Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Oslo Gardermoen. Price data was last updated on October 31, 2025.

To ensure you get the cheapest price possible for a flight from Seattle to Oslo Gardermoen Airport, you should look to book at least 76 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Seattle to Oslo Gardermoen Airport?

Currently, January is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of $340). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of $537). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to OSL?

Find hourly flight availability from Seattle to Oslo Gardermoen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 6, 2025.

It’s optimal to fly from Seattle to Oslo Gardermoen Airport in the evening. By choosing this option you can save up to 27% on the cost of your flight, compared to a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to Oslo Gardermoen. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Oslo Gardermoen Airport flight should consider departing on Saturday mornings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Seattle to Oslo Gardermoen Airport?

Reviews of airlines servicing Oslo Gardermoen

Get insights into the airlines that provide service to Oslo Gardermoen. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Oslo Gardermoen. Reviews last updated November 6, 2025.
Peruse reviews from past customers who have flown with Delta, Scandinavian Airlines, and Icelandair from Seattle to Oslo Gardermoen Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,001 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Scandinavian Airlines
7.4
Good
1,561 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Icelandair
7.1
Good
571 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Lufthansa
6.8
Okay
7,558 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,500 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Oslo Gardermoen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Oslo Gardermoen?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl is the airport most travelers will use when flying to Oslo Gardermoen from Seattle. Booking flights from Seattle/Tacoma Intl (SEA) to Oslo Gardermoen should be relatively easy as there are 0 daily outbound flights to Oslo Gardermoen from 10 different airlines.

  • How long is the flight from Seattle to Oslo Gardermoen Airport?

    For as low as $417, Icelandair can have you in Oslo Gardermoen Airport from Seattle in 12h. Seattle and Oslo Gardermoen Airport are separated by a distance of 4551 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seattle to Oslo Gardermoen Airport round-trip?

    Currently priced at $368, British Airways will fly you from Seattle to Oslo Gardermoen Airport and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Icelandair and Delta - these airlines can fly you to your destination from $403 and $468, respectively. British Airways is 38% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Seattle to Oslo Gardermoen that include hotel bookings?

    Yes. In addition to deals on Seattle to Oslo Gardermoen flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Oslo Gardermoen?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Oslo Gardermoen.

  • Can I find deals for business class flights from Seattle to Oslo Gardermoen?

    Yes. Cheapflights offers flight deals from Seattle to Oslo Gardermoen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, January is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of $340). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of $537). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Seattle to Oslo Gardermoen

See prices for flight routes from nearby airports that may be better suited for you.
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Spokane to Oslo Gardermoen flights
Portland to Sandefjord flights
Spokane to Sandefjord flights

Top 10 airlines flying from Seattle to Oslo Gardermoen

Discover the top 10 airlines that operate flights from Seattle to Oslo Gardermoen. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$368Average$628FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$403Average$554FlexibilityNo cancel feeOn-time76%
DeltaCheapest$468Average$738FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$491Average$754FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$494Average$718FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$517Average$840FlexibilityNo cancel feeOn-time69%
KLMCheapest$524Average$763FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$551Average$746FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$552Average$615FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$564Average$673FlexibilityNo cancel feeOn-time71%

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