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Cheap flights from Seattle to Oslo Gardermoen Airport from C$ 460

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 15/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
27 Aug — 3 Sep1
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 28 July 2026.

Sun 16/86:50 p.m.
SEA
-
OSL
1 stop18h 15m
United Airlines
Wed 26/87:10 a.m.
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 23/7C$ 695
Sun 16/86:50 p.m.
SEA
-
OSL
1 stop18h 15m
United Airlines
Tue 25/86:55 a.m.
OSL
-
SEA
1 stop14h 00m
United Airlines
Deal found 23/7C$ 707
Thu 22/106:50 p.m.
SEA
-
OSL
1 stop18h 15m
United Airlines
Sun 1/116:15 a.m.
OSL
-
SEA
1 stop14h 45m
United Airlines
Deal found 26/7C$ 708
Sun 16/86:50 p.m.
SEA
-
OSL
1 stop18h 15m
United Airlines
Wed 19/87:10 a.m.
OSL
-
SEA
2 stops24h 54m
United Airlines
Deal found 23/7C$ 711
Sun 11/106:50 p.m.
SEA
-
OSL
1 stop18h 15m
United Airlines
Thu 15/107:10 a.m.
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 27/7C$ 712
Tue 10/118:30 a.m.
SEA
-
OSL
2 stops24h 10m
Multiple Airlines
Thu 19/116:15 a.m.
OSL
-
SEA
1 stop14h 45m
Multiple Airlines
Deal found 23/7C$ 714
Wed 9/95:00 a.m.
SEA
-
OSL
2 stops32h 05m
United Airlines
Tue 29/97:10 a.m.
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 23/7C$ 718
Tue 10/117:00 a.m.
SEA
-
OSL
2 stops25h 10m
United Airlines
Thu 19/116:15 a.m.
OSL
-
SEA
1 stop14h 45m
United Airlines
Deal found 27/7C$ 719
Sun 1/1111:15 p.m.
SEA
-
OSL
2 stops32h 55m
United Airlines
Tue 10/116:45 a.m.
OSL
-
SEA
2 stops23h 54m
United Airlines
Deal found 27/7C$ 725

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 28 July 2026.

Round-trip from

C$ 695

One-way from

C$ 460

Popular in

December

Cheapest in

January

Average price

C$ 924
United Airlines
  • United Airlines
  • 16/8-26/8
  • 2 total stops
  • 37h 04m total
  • Seattle to Oslo
Search Deals
Delta
  • Delta
  • 16/11
  • 2 total stops
  • 28h 15m total
  • Seattle to Oslo
Search Deals
High demand for flights, 5% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 23 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 629,999 searches. Data last updated 28 July 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 14/1

12:15 p.m.-5:40 p.m.

2 stops20h 25m

Oslo Gardermoen

Tue 19/1

6:45 a.m.-9:56 p.m.

3 stops24h 11m

C$ 721

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 1/11

7:00 a.m.-5:10 p.m.

2 stops25h 10m

Oslo Gardermoen

Tue 10/11

6:45 a.m.-9:21 p.m.

2 stops23h 36m

C$ 725
Quickest round-trip

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 23/11

6:45 a.m.-11:00 a.m.

2 stops19h 15m

Oslo Gardermoen

Sun 29/11

6:15 a.m.-12:00 p.m.

1 stop14h 45m

C$ 729

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 9/9

5:00 a.m.-10:05 p.m.

2 stops32h 05m

Oslo Gardermoen

Tue 29/9

6:55 a.m.-2:22 p.m.

2 stops16h 27m

C$ 729

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 11/10

10:48 p.m.-5:15 p.m.

2 stops33h 27m

Oslo Gardermoen

Thu 15/10

6:45 a.m.-10:42 p.m.

2 stops24h 57m

C$ 735

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 2/9

7:00 a.m.-5:15 p.m.

2 stops25h 15m

Oslo Gardermoen

Wed 9/9

7:10 a.m.-9:51 p.m.

2 stops23h 41m

C$ 738

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 14/10

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

1 stop18h 15m

Oslo Gardermoen

Sun 25/10

9:35 a.m.-1:00 p.m.

1 stop35h 25m

C$ 750

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 21/11

11:17 p.m.-5:10 p.m.

2 stops32h 53m

Oslo Gardermoen

Sun 29/11

9:35 a.m.-8:59 p.m.

2 stops44h 24m

C$ 760

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 7/9

7:00 a.m.-5:15 p.m.

2 stops25h 15m

Oslo Gardermoen

Mon 21/9

6:45 a.m.-2:22 p.m.

2 stops16h 37m

C$ 905
Cheapest one-way

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 19/11

8:25 a.m.-1:50 p.m.

2 stops20h 25m

C$ 460

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/7

Showing 1-10 of 19 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$ 595). Flying from Seattle to Oslo Gardermoen Airport in December is currently the most expensive (average of C$ 965). 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 C$ 708 and C$ 939 in August.
The cheapest round-trip price found within the last 5 days was C$ 695 on United Airlines (16 Aug-26 Aug).

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 28 July 2026.
Get a feel of what it's like to fly with Icelandair and Lufthansa 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.
Icelandair
7.0
Good
715 reviews
Check prices

Comfort

6.9

Crew

8.0

Entertainment

6.9

Food

6.1

Boarding

7.2

Overall

7.0

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.
Icelandair
7.0
Good
715 reviews
Icelandair
7.0
Good
715 reviews
Check prices

Comfort

6.9

Crew

8.0

Entertainment

6.9

Food

6.1

Boarding

7.2

Overall

7.0

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.
Lufthansa
6.8
Okay
8,161 reviews
Icelandair
7.0
Good
715 reviews
Check prices

Comfort

6.9

Crew

8.0

Entertainment

6.9

Food

6.1

Boarding

7.2

Overall

7.0

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.

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 2 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 20h 25m. 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$ 591. Another airline that can offer you cheap pricing is Lufthansa. Icelandair is 24% 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$ 595). Flying from Seattle to Oslo Gardermoen Airport in December is currently the most expensive (average of C$ 965). 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 2 airlines flying from Seattle to Oslo Gardermoen

Discover the top 2 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 28 July 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 591AverageC$ 692FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapestC$ 688AverageC$ 709FlexibilityNo 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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