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Oslo Gardermoen

$269+ 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Oslo Gardermoen are usually found in October 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 September 11, 2025.

Round-trip from

$395
(oojo)

One-way from

$269
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$590
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. 16% potential increase in price ($122 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 11, 2025.

This oojo deal was found by Cheapflights users on 9/11. 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 10/177:00 pmSEA - OSL
1 stop32h 35mIcelandair
Fri 11/71:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 9/11$395
This FlightHub deal was found by Cheapflights users on 9/11. 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.
Fri 12/52:35 pmSEA - OSL
1 stop12h 00mIcelandair
Thu 12/111:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 9/11$396
This oojo deal was found by Cheapflights users on 9/11. 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 10/157:00 pmSEA - OSL
1 stop32h 35mIcelandair
Mon 10/204:45 pmOSL - SEA
1 stop12h 55mIcelandair
Deal found 9/11$398
This Gurufare deal was found by Cheapflights users on 9/9. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/132:35 pmSEA - OSL
1 stop12h 00mIcelandair
Wed 11/191:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 9/9$411
This KAYAK deal was found by Cheapflights users on 9/11. 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.
Sat 12/62:35 pmSEA - OSL
1 stop21h 00mIcelandair
Thu 12/111:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 9/11$414
This Icelandair deal was found by Cheapflights users on 9/11. 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.
Fri 12/52:35 pmSEA - OSL
1 stop12h 00mIcelandair
Tue 12/91:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 9/11$419
This oojo deal was found by Cheapflights users on 9/11. 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 9/297:00 pmSEA - OSL
1 stop32h 35mIcelandair
Mon 10/64:45 pmOSL - SEA
1 stop12h 55mIcelandair
Deal found 9/11$421
This oojo deal was found by Cheapflights users on 9/9. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/283:35 pmSEA - OSL
1 stop12h 00mIcelandair
Fri 11/71:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 9/9$428
This oojo deal was found by Cheapflights users on 9/11. 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 9/11$429
This oojo deal was found by Cheapflights users on 9/11. 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 9/247:00 pmSEA - OSL
1 stop32h 35mIcelandair
Sun 10/510:30 pmOSL - SEA
1 stop28h 20mIcelandair
Deal found 9/11$430
This FlightHub deal was found by Cheapflights users on 9/9. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/122:35 pmSEA - OSL
1 stop12h 00mIcelandair
Wed 11/191:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 9/9$433

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 September 11, 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

Sat 12/6

2:35 pm-8:35 pm

1 stop21h 00m

Oslo Gardermoen

Thu 12/11

1:10 pm-5:00 pm

1 stop12h 50m

$414

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 12/5

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Tue 12/9

1:10 pm-5:00 pm

1 stop12h 50m

$419

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 12/2

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Thu 12/11

1:10 pm-5:00 pm

1 stop12h 50m

$456

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

$457

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 10/15

2:10 pm-5:50 pm

2 stops18h 40m

Oslo Gardermoen

Mon 10/20

1:25 pm-10:22 pm

1 stop17h 57m

$481

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 10/28

2:40 pm-9:30 pm

1 stop22h 50m

Oslo Gardermoen

Fri 11/7

6:25 am-1:20 pm

1 stop15h 55m

$494

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 9/30

7:00 pm-3:40 pm

1 stop11h 40m

Oslo Gardermoen

Mon 10/6

4:45 pm-5:50 pm

1 stop34h 05m

$495

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 10/28

11:25 am-4:20 pm

2 stops20h 55m

Oslo Gardermoen

Fri 11/7

6:25 am-1:20 pm

1 stop15h 55m

$499

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 10/7

1:30 pm-4:40 pm

1 stop18h 10m

Oslo Gardermoen

Tue 10/14

6:30 am-11:50 am

1 stop14h 20m

$503

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 11/8

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Wed 11/19

1:10 pm-5:00 pm

1 stop12h 50m

$505

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 20 results
1
2

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 August 29, 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, November is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of $567). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of $1,005). 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 September 11, 2025.

It’s optimal to fly from Seattle to Oslo Gardermoen Airport in the evening. By choosing this option you can save up to 28% 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 Sunday evenings 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.

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 September 11, 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
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Scandinavian Airlines
7.4
Good
1,484 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Icelandair
7.0
Good
546 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Lufthansa
6.8
Okay
7,409 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
British Airways
6.7
Okay
7,361 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $481, Icelandair can have you in Oslo Gardermoen Airport from Seattle in 18h 40m. 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 $410, Icelandair will fly you from Seattle to Oslo Gardermoen Airport and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from British Airways and Finnair - these airlines can fly you to your destination from $475 and $484, respectively. Icelandair is 33% 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, November is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of $567). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of $1,005). 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

Traveling to a place near Oslo Gardermoen Airport?

Book flights to Oslo Gardermoen Airport if you plan to visit one of these locations
Gardermoen

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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.
Portland to Oslo Gardermoen flights
Seattle to Sandefjord flights
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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$410Average$560FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$475Average$647FlexibilityNo cancel feeOn-time70%
FinnairCheapest$484Average$734FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$494Average$727FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$517Average$840FlexibilityNo cancel feeOn-time69%
KLMCheapest$524Average$790FlexibilityNo cancel feeOn-time75%
DeltaCheapest$545Average$858FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$551Average$854FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$552Average$615FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$578Average$731FlexibilityNo cancel feeOn-time71%

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