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Cheap flights from Seattle to Oslo Gardermoen Airport from C$ 283

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
25 May — 1 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Oslo Gardermoen

Enter your travel dates to find the best prices.

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 25 April 2026.

Sun 8/112:35 p.m.
SEA
-
OSL
1 stop12h 00m
Icelandair
Thu 12/119:30 p.m.
OSL
-
SEA
1 stop28h 30m
Icelandair
Deal found 20/4C$ 654
Thu 13/86:50 p.m.
SEA
-
OSL
1 stop18h 15m
United Airlines
Thu 20/87:10 a.m.
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 21/4C$ 672
Wed 30/123:10 p.m.
SEA
-
OSL
1 stop17h 30m
United Airlines
Fri 15/16:10 a.m.
OSL
-
SEA
1 stop16h 10m
United Airlines
Deal found 22/4C$ 673
Tue 11/83:33 p.m.
SEA
-
OSL
2 stops21h 32m
United Airlines
Thu 20/87:10 a.m.
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 22/4C$ 679
Sun 3/56:50 p.m.
SEA
-
OSL
1 stop18h 15m
United Airlines
Fri 8/57:15 a.m.
OSL
-
SEA
2 stops37h 22m
United Airlines
Deal found 21/4C$ 686
Wed 30/123:10 p.m.
SEA
-
OSL
1 stop17h 30m
United Airlines
Tue 12/111:50 a.m.
OSL
-
SEA
1 stop34h 30m
United Airlines
Deal found 22/4C$ 687
Wed 30/123:10 p.m.
SEA
-
OSL
1 stop17h 30m
United Airlines
Mon 11/16:15 a.m.
OSL
-
SEA
1 stop14h 55m
United Airlines
Deal found 22/4C$ 688
Mon 4/57:25 a.m.
SEA
-
OSL
2 stops18h 30m
United Airlines
Tue 12/56:55 a.m.
OSL
-
SEA
1 stop14h 25m
United Airlines
Deal found 25/4C$ 690
Sun 8/117:00 a.m.
SEA
-
OSL
2 stops25h 10m
United Airlines
Thu 12/116:15 a.m.
OSL
-
SEA
1 stop14h 55m
United Airlines
Deal found 20/4C$ 695

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 25 April 2026.

Round-trip from

C$ 672

One-way from

C$ 283

Popular in

June

Cheapest in

January

Average price

C$ 698
United Airlines
  • United Airlines
  • 13/8-20/8
  • 2 total stops
  • 37h 04m total
  • Seattle to Oslo
Search Deals
Icelandair
  • Icelandair
  • 5/5
  • 1 total stop
  • 11h 55m total
  • Seattle to Oslo
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 169 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 629,999 searches. Data last updated 25 April 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

Thu 13/8

6:50 p.m.-10:05 p.m.

1 stop18h 15m

Oslo Gardermoen

Thu 20/8

7:10 a.m.-9:58 a.m.

2 stops35h 48m

C$ 686

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 28/9

11:04 p.m.-5:15 p.m.

2 stops33h 11m

Oslo Gardermoen

Mon 2/11

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

1 stop14h 55m

C$ 710

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 22/8

5:00 p.m.-5:15 p.m.

2 stops39h 15m

Oslo Gardermoen

Sat 5/9

7:15 a.m.-4:59 p.m.

1 stop18h 44m

C$ 714

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 11/10

6:50 p.m.-10:05 p.m.

1 stop18h 15m

Oslo Gardermoen

Sat 17/10

9:55 a.m.-6:32 p.m.

2 stops41h 37m

C$ 727

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 10/6

6:50 p.m.-5:55 p.m.

1 stop14h 05m

Oslo Gardermoen

Tue 1/9

7:10 a.m.-11:24 p.m.

3 stops25h 14m

C$ 750

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 19/8

3:51 p.m.-2:45 p.m.

2 stops37h 54m

Oslo Gardermoen

Wed 26/8

9:55 a.m.-11:24 p.m.

3 stops46h 29m

C$ 754

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 20/5

8:00 a.m.-12:15 a.m.

2 stops31h 15m

Oslo Gardermoen

Wed 27/5

11:45 a.m.-9:22 a.m.

2 stops30h 37m

C$ 757

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 15/9

10:47 p.m.-12:15 p.m.

2 stops28h 28m

Oslo Gardermoen

Wed 30/9

1:05 p.m.-10:42 p.m.

2 stops42h 37m

C$ 777

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 11/8

1:30 p.m.-4:40 p.m.

1 stop18h 10m

Oslo Gardermoen

Tue 18/8

6:30 a.m.-7:05 p.m.

2 stops21h 35m

C$ 821
Quickest round-trip

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 16/9

9:50 a.m.-1:40 p.m.

2 stops18h 50m

Oslo Gardermoen

Fri 25/9

6:30 a.m.-11:15 a.m.

1 stop13h 45m

C$ 853

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/4

Showing 1-10 of 20 resultsSorted by cheapest first
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?

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 86 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, January is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of C$ 578). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of C$ 1,018). 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 25 April 2026.
Get a feel of what it's like to fly with KLM,Scandinavian Airlines, andIcelandair 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.
KLM
7.8
Good
1,508 reviews
Check prices

Entertainment

7.1

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,508 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Entertainment

7.1

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Scandinavian Airlines
7.4
Good
1,761 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Entertainment

7.1

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Icelandair
7.0
Good
641 reviews
KLM
7.8
Good
1,508 reviews
Check prices

Entertainment

7.1

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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 3 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.

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

    United Airlines can get you from Seattle to Oslo Gardermoen Airport in just under 33h 11m. Your travel time can differ by up to . There are 7324 km between Seattle and Oslo Gardermoen Airport.

  • 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$ 574. Other airlines that can offer you cheap pricing are KLM, from C$ 589, and Scandinavian Airlines, from C$ 704. Icelandair is 23% 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, January is the cheapest month in which you can book a flight from Seattle to Oslo Gardermoen Airport (average of C$ 578). Flying from Seattle to Oslo Gardermoen Airport in June is currently the most expensive (average of C$ 1,018). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Seattle to Oslo Gardermoen

Discover the top 3 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 25 April 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 574AverageC$ 647FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapestC$ 589AverageC$ 590FlexibilityNo cancel feeOn-time75%
Search KLM flights
Scandinavian AirlinesCheapestC$ 704AverageC$ 757FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines 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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