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$284+ Cheap flights from Oslo Gardermoen (OSL) to Seattle (SEA)

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — SEA
Dec 21 — Dec 281
Sun 12/21
Sun 12/28
1 adult, Economy
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Cheapflights Tip: The best prices from Oslo Gardermoen to Seattle/Tacoma Intl are usually found in May or January, booked 61 days in advance, depart on a Saturday or Friday and return on a Tuesday

Cheap flight deals from Oslo Gardermoen to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Oslo Gardermoen (OSL) to Seattle (SEA). 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 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$464
(Ticket)

One-way from

$284
(Ticket)

Popular in

July

Cheapest in

May

Average price

$493
Provider with most accurate pricing for Oslo Gardermoen-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Oslo Gardermoen-Seattle/Tacoma Intl flights.
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From Oslo Gardermoen to Seattle/Tacoma Intl
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One-way flight from Oslo Gardermoen to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 14% potential increase in price ($99 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 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 Oslo Gardermoen to Seattle

Cheapest flights from Oslo Gardermoen to Seattle
Explore the most affordable flight options available from Oslo Gardermoen to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 21, 2025.

This Ticket deal was found by Cheapflights users on 11/19. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/271:10 pmOSL - SEA
1 stop12h 50mIcelandair
Wed 12/102:35 pmSEA - OSL
1 stop12h 00mIcelandair
Deal found 11/19$449
This Delta deal was found by Cheapflights users on 11/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/276:30 amOSL - SEA
1 stop14h 15mDelta
Wed 12/107:20 amSEA - OSL
2 stops19h 30mDelta
Deal found 11/19$582
This United Airlines deal was found by Cheapflights users on 11/19. 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.
Wed 11/191:50 pmOSL - SEA
2 stops31h 28mUnited Airlines
Mon 11/247:00 amSEA - OSL
2 stops20h 55mUnited Airlines
Deal found 11/19$688
This United Airlines deal was found by Cheapflights users on 11/20. 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.
Fri 12/266:15 amOSL - SEA
2 stops27h 44mUnited Airlines
Fri 1/92:00 pmSEA - OSL
2 stops36h 00mUnited Airlines
Deal found 11/20$705
This Lufthansa deal was found by Cheapflights users on 11/19. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1911:50 amOSL - SEA
2 stops19h 38mLufthansa
Mon 11/242:00 pmSEA - OSL
1 stop18h 30mLufthansa
Deal found 11/19$760
This Gotogate deal was found by Cheapflights users on 11/19. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/203:05 pmOSL - SEA
1 stop34h 50mBritish Airways
Sun 11/236:50 pmSEA - OSL
1 stop31h 05mBritish Airways
Deal found 11/19$835
This American Airlines deal was found by Cheapflights users on 11/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1911:50 amOSL - SEA
2 stops44h 28mAmerican Airlines
Sun 11/236:50 pmSEA - OSL
1 stop31h 05mAmerican Airlines
Deal found 11/19$838

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oslo Gardermoen to Seattle 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 21, 2025.
Use the filters below to find and compare flights from Oslo Gardermoen Airport to Seattle that are best for you.

Fly from

Oslo Gardermoen

Fly to

Seattle

Route

Depart

Return

Price

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 1/15

7:05 am-4:55 pm

1 stop18h 50m

Seattle/Tacoma Intl

Wed 1/28

6:50 pm-10:55 am

1 stop31h 05m

$464

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 1/15

6:15 am-12:10 pm

1 stop14h 55m

Seattle/Tacoma Intl

Wed 1/28

7:00 am-1:00 pm

2 stops21h 00m

$473

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 1/15

12:25 pm-11:59 pm

2 stops20h 34m

Seattle/Tacoma Intl

Wed 1/28

6:50 pm-10:40 pm

1 stop18h 50m

$486

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 1/15

7:05 am-4:55 pm

1 stop18h 50m

Seattle/Tacoma Intl

Wed 1/28

6:50 pm-2:15 pm

1 stop34h 25m

$501

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 1/15

6:15 am-12:10 pm

1 stop14h 55m

Seattle/Tacoma Intl

Wed 1/28

8:40 am-5:10 pm

3 stops47h 30m

$514

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 2/15

1:50 pm-12:10 pm

1 stop31h 20m

Seattle/Tacoma Intl

Thu 2/19

2:00 pm-5:50 pm

1 stop18h 50m

$523

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 2/15

1:50 pm-12:10 pm

1 stop31h 20m

Seattle/Tacoma Intl

Thu 2/19

7:00 am-5:10 pm

2 stops25h 10m

$526

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 1/12

11:35 am-11:30 am

1 stop32h 55m

$284

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 1/12

8:45 am-11:51 pm

2 stops24h 06m

$293

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 3/23

8:45 am-10:59 pm

2 stops22h 14m

$297

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 14 results
1
2

Compare providers for flights from Oslo Gardermoen to Seattle

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 Oslo Gardermoen to Seattle in November.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 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 Oslo Gardermoen Airport-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Oslo Gardermoen Airport-Seattle flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Oslo Gardermoen Airport-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Oslo Gardermoen Airport-Seattle 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 Oslo Gardermoen Airport-Seattle 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 Oslo Gardermoen to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Oslo Gardermoen 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 Oslo Gardermoen Airport to Seattle

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

Use this chart to determine the optimal time to book a round-trip flight from Oslo Gardermoen to Seattle. Price data was last updated on November 14, 2025.

Booking 61 days in advance of your planned departure date is, on average, the best time to get cheap flights from Oslo Gardermoen Airport to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, November is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Seattle (average of $356). Flying from Oslo Gardermoen Airport to Seattle in July is currently the most expensive (average of $492). 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 OSL to SEA?

Find hourly flight availability from Oslo Gardermoen to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 21, 2025.

It’s typically best to fly out from Oslo Gardermoen Airport to Seattle in the evening. Doing so could potentially save you 19% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated November 21, 2025.
See what other customers who have flown with Delta, Scandinavian Airlines, and Icelandair from Oslo Gardermoen Airport to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,002 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.1

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
8,002 reviews
Delta
7.9
Good
8,002 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.1

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
1,584 reviews
Delta
7.9
Good
8,002 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.1

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
7.0
Good
581 reviews
Delta
7.9
Good
8,002 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.1

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
7,579 reviews
Delta
7.9
Good
8,002 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.1

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
7,533 reviews
Delta
7.9
Good
8,002 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

7.9

Boarding

8.1

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 Oslo Gardermoen to Seattle. 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 into for flights to Seattle from Oslo Gardermoen?

    Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Oslo Gardermoen to Seattle. You should not have trouble finding flights to Seattle/Tacoma Intl from Oslo Gardermoen; the airport handles an average of 0 inbound flights from Oslo Gardermoen per day. You should also have plenty of airline options to choose from since 5 airlines have flights to the Seattle airport from Oslo Gardermoen. It is only a 11.4 mi journey from Seattle/Tacoma Intl (SEA) to Seattle’s city center.

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

    There are many flights that can get you from Oslo Gardermoen Airport to Seattle in 14h 55m. Fly via British Airways, Lufthansa, or American Airlines to get the fastest option. Airlines will cover a distance of 4551 mi. This flight may include one or multiple stops.

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

    Flying on British Airways is currently your cheapest option to Seattle, with prices starting at $362. Additional round-trip tickets that might be worth considering are offered by Icelandair and Lufthansa, with the lowest prices starting at $399 and $423, respectively. Users have found that British Airways is 36% cheaper than the other options available to this destination.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Oslo Gardermoen to Seattle 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 Oslo Gardermoen Airport to Seattle?

    Currently, November is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Seattle (average of $356). Flying from Oslo Gardermoen Airport to Seattle in July is currently the most expensive (average of $492). 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 Oslo Gardermoen to Seattle

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

Top 5 airlines flying from Oslo Gardermoen to Seattle

Discover the top 5 airlines that operate flights from Oslo Gardermoen to Seattle. 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 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$362Average$600FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$399Average$607FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$423Average$532FlexibilityNo cancel feeOn-time76%
DeltaCheapest$452Average$525FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$603Average$703FlexibilityNo cancel feeOn-time77%

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