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Cheap flights from Seattle to Oslo Gardermoen Airport from C$ 506

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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
3 Aug — 10 Aug1
1 adult

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 Monday or Wednesday and return on a Monday

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 29 July 2025.

Round-trip from

C$ 595

One-way from

C$ 506

Popular in

June

Cheapest in

January

Average price

C$ 1,015
Icelandair
  • Icelandair
  • 19/1-29/1
  • 2 total stops
  • 24h 50m total
  • Seattle to Oslo
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Icelandair
  • Icelandair
  • 9/10
  • 1 total stop
  • 11h 50m total
  • Seattle to Oslo
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 213 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 40 potential savings vs. average RT price).
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Average for round-trip flights in July 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 29 July 2025.

Tue 7/107:00 p.m.SEA - OSL
1 stop11h 40mIcelandair
Mon 20/104:45 p.m.OSL - SEA
1 stop12h 55mIcelandair
Deal found 27/7C$ 601
Sun 5/104:20 p.m.SEA - OSL
1 stop11h 35mScandinavian Airlines
Tue 21/108:55 p.m.OSL - SEA
1 stop26h 05mScandinavian Airlines
Deal found 27/7C$ 643
Tue 28/109:20 a.m.SEA - OSL
2 stops20h 50mBritish Airways
Fri 7/117:10 a.m.OSL - SEA
2 stops21h 04mBritish Airways
Deal found 29/7C$ 674
Mon 3/116:50 p.m.SEA - OSL
2 stops28h 10mFinnair
Tue 11/118:45 a.m.OSL - SEA
2 stops22h 39mFinnair
Deal found 29/7C$ 690
Wed 15/107:19 a.m.SEA - OSL
2 stops16h 56mDelta
Mon 20/106:05 a.m.OSL - SEA
1 stop14h 10mDelta
Deal found 28/7C$ 696
Mon 28/72:20 p.m.SEA - OSL
1 stop16h 20mLufthansa
Thu 21/86:35 a.m.OSL - SEA
1 stop14h 20mLufthansa
Deal found 27/7C$ 716
Tue 9/97:10 a.m.SEA - OSL
3 stops25h 05mUnited Airlines
Wed 1/1011:35 a.m.OSL - SEA
1 stop14h 24mUnited Airlines
Deal found 28/7C$ 727
Thu 14/85:40 p.m.SEA - OSL
1 stop15h 55mMultiple Airlines
Wed 20/86:05 a.m.OSL - SEA
1 stop20h 30mMultiple Airlines
Deal found 28/7C$ 764

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 629,999 searches. Data last updated 29 July 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

Mon 19/1

2:35 p.m.-11:35 a.m.

1 stop12h 00m

Oslo Gardermoen

Thu 29/1

1:10 p.m.-5:00 p.m.

1 stop12h 50m

C$ 595

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 5/10

4:20 p.m.-12:55 p.m.

1 stop11h 35m

Oslo Gardermoen

Tue 21/10

8:55 p.m.-2:00 p.m.

1 stop26h 05m

C$ 643

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 28/10

9:20 a.m.-2:10 p.m.

2 stops20h 50m

Oslo Gardermoen

Fri 7/11

7:10 a.m.-7:14 p.m.

2 stops21h 04m

C$ 674

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 3/11

6:50 p.m.-8:00 a.m.

2 stops28h 10m

Oslo Gardermoen

Tue 11/11

8:45 a.m.-10:24 p.m.

2 stops22h 39m

C$ 690

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 15/10

7:19 a.m.-9:15 a.m.

2 stops16h 56m

Oslo Gardermoen

Mon 20/10

6:05 a.m.-11:15 a.m.

1 stop14h 10m

C$ 696

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 9/9

7:10 a.m.-5:15 p.m.

3 stops25h 05m

Oslo Gardermoen

Wed 1/10

11:35 a.m.-4:59 p.m.

1 stop14h 24m

C$ 727

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 18/8

4:25 p.m.-1:05 p.m.

1 stop35h 40m

Oslo Gardermoen

Mon 1/9

1:55 p.m.-10:59 p.m.

2 stops42h 04m

C$ 755

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 24/10

10:00 a.m.-12:15 p.m.

2 stops17h 15m

Oslo Gardermoen

Mon 10/11

6:15 a.m.-12:10 p.m.

1 stop14h 55m

C$ 759

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 14/8

5:40 p.m.-6:35 p.m.

1 stop15h 55m

Oslo Gardermoen

Wed 20/8

6:05 a.m.-5:35 p.m.

1 stop20h 30m

C$ 764

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 9/10

3:45 p.m.-12:35 p.m.

1 stop11h 50m

C$ 506

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/7

Showing 1-10 of 14 results
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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 25 July 2025.

The price you pay for your flight from Seattle to Oslo Gardermoen Airport may vary depending on when you book. For the best chance of a lower fare, look to book 76 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 C$ 666). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of C$ 949). 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 29 July 2025.

It’s typically best to fly out from Seattle to Oslo Gardermoen Airport in the afternoon. Doing so could potentially save you 32% on the flight price compared to flying in the morning, which is usually more expensive.

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

What’s the top layover airport for flights from Seattle to Oslo Gardermoen Airport?

Share of one-stop round-trip flights from Seattle to Oslo Gardermoen Airport chosen by Cheapflights users in the past 12 months, using the same layover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 41% of one-stop itineraries from Seattle to Oslo Gardermoen Airport on Cheapflights.

What’s the cheapest layover airport for flights from Seattle to Oslo Gardermoen Airport?

Average round-trip fare for 1-stop flights from Seattle to Oslo Gardermoen Airport, chosen by Cheapflights users in the past 12 months, with the same layover each way.

London (LHR) is the most affordable 1-stop option, with an average round-trip price of C$ 593.

What’s the fastest layover option from Seattle to Oslo Gardermoen Airport?

Shortest average travel time for 1-stop one-way flights from Seattle to Oslo Gardermoen Airport, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Copenhagen (CPH) have the shortest average one-way travel time for 1-stop routes: 2h 29m.

Which airport typically offers the quickest layover for flights from Seattle to Oslo Gardermoen Airport?

Average layover duration for 1-stop one-way flights from Seattle to Oslo Gardermoen Airport, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Copenhagen (CPH) offer the fastest connection on this route, with an average layover time of 1h 10m.

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 29 July 2025.
Get a feel of what it's like to fly with Delta,KLM, andFinnair from Seattle to Oslo Gardermoen Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,979 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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
7,979 reviews
Delta
8.0
Very good
7,979 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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!
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,979 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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!
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,979 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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!
SWISS
7.5
Good
1,683 reviews
Delta
8.0
Very good
7,979 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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!
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,979 reviews
Check prices

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

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?

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Oslo Gardermoen. You should not have trouble finding flights to Oslo Gardermoen from Seattle/Tacoma Intl; the airport handles an average of 0 outbound flights to Oslo Gardermoen per day. You should also have plenty of airline options to choose from since 4 airlines have flights from the Seattle airport to Oslo Gardermoen. It is only a 18.4 km journey to Seattle/Tacoma Intl (SEA) from Seattle’s city centre.

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

    Cheapflights users have booked flights from Seattle to Oslo Gardermoen Airport round-trip from C$ 595. Other airlines that can offer you cheap pricing are Scandinavian Airlines, from C$ 643, and British Airways, from C$ 674. Icelandair is 31% 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?

    The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as C$ 506. However, be on the lookout for offers from British Airways and Delta, as they are both options that can get you from Seattle to Oslo Gardermoen Airport for a low price.

  • 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 C$ 666). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of C$ 949). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Seattle to Oslo Gardermoen

Discover the top 4 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 629,999 searches. Data last updated 29 July 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 590AverageC$ 726FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapestC$ 591AverageC$ 624FlexibilityNo cancel feeOn-time75%
Search KLM flights
Scandinavian AirlinesCheapestC$ 706AverageC$ 758FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
LufthansaCheapestC$ 879AverageC$ 882FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Oslo Gardermoen?

When you search for this flight from Seattle to Oslo Gardermoen, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Oslo Gardermoen?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Oslo Gardermoen from Seattle.

Can Cheapflights find flights from Seattle to Oslo Gardermoen with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Seattle to Oslo Gardermoen, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Seattle to Oslo Gardermoen become cheaper?

Yes, Cheapflights offers price alerts on Seattle to Oslo Gardermoen flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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