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Oslo Gardermoen

$224+ 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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Aug 23 — Aug 301
Sun 8/23
Sun 8/30
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 July 24, 2026.

This FlightHub deal was found by Cheapflights users on 7/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/117:00 pm
SEA
-
OSL
1 stop11h 25m
Icelandair
Mon 8/311:50 pm
OSL
-
SEA
1 stop15h 50m
Icelandair
Deal found 7/21$491
This FlightHub deal was found by Cheapflights users on 7/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
Tue 8/254:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 7/22$492
This United Airlines deal was found by Cheapflights users on 7/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/193:54 pm
SEA
-
OSL
2 stops21h 11m
United Airlines
Wed 8/267:10 am
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 7/20$493
This FlightHub deal was found by Cheapflights users on 7/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
Mon 8/241:50 pm
OSL
-
SEA
1 stop30h 55m
Icelandair
Deal found 7/22$494
This oojo deal was found by Cheapflights users on 7/24. 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 10/87:00 pm
SEA
-
OSL
1 stop11h 25m
Icelandair
Mon 10/121:50 pm
OSL
-
SEA
1 stop13h 05m
Icelandair
Deal found 7/24$495
This oojo deal was found by Cheapflights users on 7/22. 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.
Sun 10/113:40 pm
SEA
-
OSL
1 stop11h 55m
Icelandair
Sat 10/174:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 7/22$496
This FlightHub deal was found by Cheapflights users on 7/20. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:05 pm
SEA
-
OSL
2 stops37h 35m
Multiple Airlines
Sat 4/176:25 am
OSL
-
SEA
2 stops21h 55m
Multiple Airlines
Deal found 7/20$497
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 10/207:00 pm
SEA
-
OSL
1 stop11h 25m
Icelandair
Mon 11/91:10 pm
OSL
-
SEA
1 stop12h 50m
Icelandair
Deal found 7/20$498
This United Airlines deal was found by Cheapflights users on 7/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:50 pm
SEA
-
OSL
1 stop18h 15m
United Airlines
Thu 8/277:10 am
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 7/19$499
This KAYAK deal was found by Cheapflights users on 7/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:00 am
SEA
-
OSL
2 stops45h 15m
SWISS
Sun 11/151:00 pm
OSL
-
SEA
2 stops43h 16m
SWISS
Deal found 7/20$500
This United deal was found by Cheapflights users on 7/22. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/42:50 pm
SEA
-
OSL
1 stop17h 50m
Multiple Airlines
Thu 11/126:15 am
OSL
-
SEA
1 stop14h 45m
Multiple Airlines
Deal found 7/22$501
This oojo deal was found by Cheapflights users on 7/21. 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.
Sun 11/12:50 pm
SEA
-
OSL
1 stop17h 50m
Lufthansa
Sun 11/86:15 am
OSL
-
SEA
1 stop14h 45m
Lufthansa
Deal found 7/21$502

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 July 24, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$491
(FlightHub)

One-way from

$224
(oojo)

Popular in

June

Cheapest in

January

Average price

$653
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. 11% potential increase in price ($75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 24, 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

Sun 11/1

7:00 am-5:10 pm

2 stops25h 10m

Oslo Gardermoen

Tue 11/10

6:45 am-9:21 pm

2 stops23h 36m

$509

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 10/14

7:00 am-10:55 am

2 stops18h 55m

Oslo Gardermoen

Fri 10/23

6:25 am-6:32 pm

2 stops21h 07m

$517

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 9/9

5:00 am-10:05 pm

2 stops32h 05m

Oslo Gardermoen

Tue 9/29

6:55 am-2:22 pm

2 stops16h 27m

$517
Quickest round-trip

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 11/5

2:00 pm-5:30 pm

1 stop18h 30m

Oslo Gardermoen

Mon 11/9

6:15 am-12:00 pm

1 stop14h 45m

$523

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 9/5

10:58 pm-5:15 pm

2 stops33h 17m

Oslo Gardermoen

Wed 9/9

6:45 am-11:36 pm

2 stops25h 51m

$525

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 9/15

7:00 am-5:15 pm

2 stops25h 15m

Oslo Gardermoen

Tue 9/29

6:55 am-2:22 pm

2 stops16h 27m

$526

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/10

5:00 am-5:55 pm

2 stops27h 55m

Oslo Gardermoen

Tue 8/25

6:45 am-7:08 pm

3 stops45h 23m

$640

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 9/16

7:15 am-11:05 am

2 stops18h 50m

Oslo Gardermoen

Fri 9/25

9:20 am-8:20 pm

2 stops20h 00m

$677
Cheapest one-way

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 8/23

3:40 pm-12:35 pm

1 stop11h 55m

$230

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 8/21

11:25 pm-3:25 pm

1 stop31h 00m

$257

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 19 resultsSorted by cheapest first
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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy2 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 stars
business-class.comPrice Accuracy3 starsTrust Score*1 star
CheapfaremartPrice Accuracy-Trust Score*1 star
JustAirTicketPrice Accuracy-Trust Score*1 star

*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 Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Seattle-Oslo Gardermoen Airport flight deals on Cheapflights vs. Ovago >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 Ovago the most. Ovago 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?

To ensure you get the cheapest price possible for a flight from Seattle to Oslo Gardermoen Airport, you should look to book at least 86 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 $422). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of $670). 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?

Airfare is below average for this route at the moment.

Seattle to Oslo Gardermoen Airport flights typically cost between $549 and $718 in August.
The cheapest round-trip price found within the last 5 days was $491 on Icelandair (Aug 11-Aug 31).

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 July 24, 2026.
Peruse reviews from past customers who have flown with KLM,Delta, andScandinavian Airlines 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.
KLM
7.8
Good
1,544 reviews

Crew

8.4

Food

7.3

Overall

7.8

Entertainment

7.2

Comfort

7.7

Boarding

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,544 reviews
KLM
7.8
Good
1,544 reviews

Crew

8.4

Food

7.3

Overall

7.8

Entertainment

7.2

Comfort

7.7

Boarding

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Delta
7.8
Good
8,483 reviews
KLM
7.8
Good
1,544 reviews

Crew

8.4

Food

7.3

Overall

7.8

Entertainment

7.2

Comfort

7.7

Boarding

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Scandinavian Airlines
7.4
Good
1,899 reviews
KLM
7.8
Good
1,544 reviews

Crew

8.4

Food

7.3

Overall

7.8

Entertainment

7.2

Comfort

7.7

Boarding

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Icelandair
7.0
Good
717 reviews
KLM
7.8
Good
1,544 reviews

Crew

8.4

Food

7.3

Overall

7.8

Entertainment

7.2

Comfort

7.7

Boarding

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Lufthansa
6.8
Okay
8,156 reviews
KLM
7.8
Good
1,544 reviews

Crew

8.4

Food

7.3

Overall

7.8

Entertainment

7.2

Comfort

7.7

Boarding

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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 7 different airlines.

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

    For as low as $493, United Airlines can have you in Oslo Gardermoen Airport from Seattle in 21h 11m. Seattle and Oslo Gardermoen Airport are separated by a distance of 4551 mi.

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

    Currently priced at $351, 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 Scandinavian Airlines - these airlines can fly you to your destination from $393 and $426, 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 $224 on Icelandair. Other airlines that offer cheap prices include KLM from $225 and Delta from $226 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, January is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of $422). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of $670). 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 7 airlines flying from Seattle to Oslo Gardermoen

Discover the top 7 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 July 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$351Average$545FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$393Average$544FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$426Average$641FlexibilityNo cancel feeOn-time77%
DeltaCheapest$457Average$676FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$490Average$684FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$491Average$545FlexibilityNo cancel feeOn-time69%
KLMCheapest$506Average$647FlexibilityNo cancel feeOn-time75%

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