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Oslo Gardermoen

$166+ 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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
1 adult, Economy
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Cheap 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 March 11, 2026.

This Sembo deal was found by Cheapflights users on 3/6. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:40 pm
SEA
-
OSL
1 stop11h 55m
Icelandair
Wed 4/291:50 pm
OSL
-
SEA
1 stop13h 05m
Icelandair
Deal found 3/6$356
This oojo deal was found by Cheapflights users on 3/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:00 pm
SEA
-
OSL
1 stop11h 25m
Icelandair
Wed 4/291:50 pm
OSL
-
SEA
1 stop15h 50m
Icelandair
Deal found 3/6$397
This Mytrip deal was found by Cheapflights users on 3/8. 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 4/133:40 pm
SEA
-
OSL
1 stop11h 55m
Icelandair
Sun 4/261:50 pm
OSL
-
SEA
1 stop15h 50m
Icelandair
Deal found 3/8$398
This oojo deal was found by Cheapflights users on 3/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/147:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
Sun 4/264:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 3/6$399
This Mytrip deal was found by Cheapflights users on 3/9. 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.
Thu 4/237:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
Thu 4/304:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 3/9$405
This oojo deal was found by Cheapflights users on 3/7. 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 4/237:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
Tue 5/51:50 pm
OSL
-
SEA
1 stop15h 50m
Icelandair
Deal found 3/7$407
This Flightnetwork deal was found by Cheapflights users on 3/9. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/77:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
Mon 4/271:50 pm
OSL
-
SEA
1 stop13h 05m
Icelandair
Deal found 3/9$414
This Flightnetwork deal was found by Cheapflights users on 3/9. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/77:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
Sun 4/261:50 pm
OSL
-
SEA
1 stop15h 50m
Icelandair
Deal found 3/9$415
This oojo deal was found by Cheapflights users on 3/5. 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.
Tue 5/57:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
Tue 5/121:50 pm
OSL
-
SEA
1 stop15h 50m
Icelandair
Deal found 3/5$420
This Mytrip deal was found by Cheapflights users on 3/10. 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.
Tue 4/77:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
Fri 4/241:50 pm
OSL
-
SEA
1 stop13h 05m
Icelandair
Deal found 3/10$422
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/77:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
Tue 4/211:50 pm
OSL
-
SEA
1 stop15h 50m
Icelandair
Deal found 3/10$423
This Kiwi.com deal was found by Cheapflights users on 3/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/133:40 pm
SEA
-
OSL
1 stop11h 55m
Icelandair
Sat 4/254:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 3/10$424

Find 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 March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$356
(Sembo)

One-way from

$166
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$538
Provider with most accurate pricing for Seattle/Tacoma Intl-Oslo Gardermoen flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Oslo Gardermoen flights.
Search Deals
From Seattle/Tacoma Intl to Oslo Gardermoen
Search Deals
One-way flight from Seattle/Tacoma Intl to Oslo Gardermoen
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($96 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 11, 2026.
Use the filters below to find and compare flights from Seattle to Oslo Gardermoen Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 4/14

7:15 am-11:05 am

2 stops18h 50m

Oslo Gardermoen

Tue 4/21

6:30 am-11:45 am

1 stop14h 15m

$479

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 4/13

7:15 am-11:05 am

2 stops18h 50m

Oslo Gardermoen

Wed 4/29

6:30 am-4:48 pm

2 stops19h 18m

$489

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 4/12

7:15 am-11:05 am

2 stops18h 50m

Oslo Gardermoen

Mon 4/27

6:30 am-11:45 am

1 stop14h 15m

$520

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 4/22

1:19 pm-4:35 pm

2 stops18h 16m

Oslo Gardermoen

Wed 4/29

12:50 pm-10:38 pm

2 stops18h 48m

$602

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 9/5

5:00 pm-10:55 am

2 stops32h 55m

Oslo Gardermoen

Mon 9/14

1:05 pm-9:56 pm

2 stops41h 51m

$605

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 4/23

3:48 pm-10:05 pm

2 stops21h 17m

Oslo Gardermoen

Thu 4/30

6:45 am-8:53 pm

2 stops23h 08m

$609

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 6/5

1:50 pm-1:40 pm

1 stop14h 50m

Oslo Gardermoen

Sat 6/13

9:20 am-8:01 pm

2 stops19h 41m

$615

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 8/19

10:47 pm-12:20 pm

2 stops28h 33m

Oslo Gardermoen

Mon 10/5

9:55 am-2:22 pm

2 stops37h 27m

$658
Quickest round-trip

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 4/9

1:45 pm-12:30 pm

1 stop13h 45m

Oslo Gardermoen

Sat 4/25

8:00 am-4:30 pm

1 stop17h 30m

$670

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 4/5

5:35 pm-4:20 pm

1 stop13h 45m

Oslo Gardermoen

Mon 4/13

8:00 am-8:04 pm

1 stop21h 04m

$713

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/6

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy1 starTrust Score*2 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Oslo Gardermoen Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 March 6, 2026.

To ensure you get the cheapest price possible for a flight from Seattle to Oslo Gardermoen Airport, you should look to book at least 87 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, April is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of $317). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of $501). 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.

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 March 11, 2026.
Peruse reviews from past customers who have flown with Delta,Scandinavian Airlines, andIcelandair 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
8,277 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Crew

8.5

Food

7.2

Comfort

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
8,277 reviews
Delta
7.9
Good
8,277 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Crew

8.5

Food

7.2

Comfort

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
7.3
Good
1,708 reviews
Delta
7.9
Good
8,277 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Crew

8.5

Food

7.2

Comfort

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
619 reviews
Delta
7.9
Good
8,277 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Crew

8.5

Food

7.2

Comfort

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
7,843 reviews
Delta
7.9
Good
8,277 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Crew

8.5

Food

7.2

Comfort

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
7,781 reviews
Delta
7.9
Good
8,277 reviews

Boarding

8.1

Entertainment

7.8

Overall

7.9

Crew

8.5

Food

7.2

Comfort

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 8 different airlines.

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

    For as low as $602, Delta can have you in Oslo Gardermoen Airport from Seattle in 18h 16m. 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 $353, 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 $390 and $468, respectively. British Airways is 36% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Oslo Gardermoen Airport one-way?

    One-way options have recently been found by users for as low as $188 on Icelandair. Other airlines that offer cheap prices include Scandinavian Airlines from $214 and Delta from $240 one-way.

  • 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, April is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of $317). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of $501). 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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Top 8 airlines flying from Seattle to Oslo Gardermoen

Discover the top 8 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 March 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$353Average$574FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$390Average$506FlexibilityNo cancel feeOn-time76%
DeltaCheapest$468Average$707FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$476Average$663FlexibilityNo cancel feeOn-time77%
FinnairCheapest$491Average$818FlexibilityNo cancel feeOn-time76%
KLMCheapest$506Average$667FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$517Average$637FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$524Average$684FlexibilityNo cancel feeOn-time76%

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