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Cheap flights from Seattle to Oslo Gardermoen Airport from C$ 538

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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
11 Oct — 18 Oct1
1 adult
1 adult, Economy

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 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 11 September 2025.

Round-trip from

C$ 581

One-way from

C$ 538

Popular in

June

Cheapest in

October

Average price

C$ 818
Icelandair
  • Icelandair
  • 5/12-9/12
  • 2 total stops
  • 24h 50m total
  • Seattle to Oslo
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Delta
  • Delta
  • 3/12
  • 1 total stop
  • 17h 00m total
  • Seattle to Oslo
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 234 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 43 potential savings vs. average RT price).
Search Deals
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 11 September 2025.

Fri 5/122:35 p.m.SEA - OSL
1 stop12h 00mIcelandair
Tue 9/121:10 p.m.OSL - SEA
1 stop12h 50mIcelandair
Deal found 11/9C$ 581
Tue 2/122:35 p.m.SEA - OSL
1 stop12h 00mIcelandair
Thu 11/121:10 p.m.OSL - SEA
1 stop12h 50mIcelandair
Deal found 11/9C$ 632
Wed 3/122:35 p.m.SEA - OSL
1 stop12h 00mIcelandair
Sun 7/129:30 p.m.OSL - SEA
1 stop28h 30mIcelandair
Deal found 10/9C$ 633
Mon 8/126:50 p.m.SEA - OSL
1 stop18h 50mBritish Airways
Tue 23/127:20 a.m.OSL - SEA
1 stop18h 35mBritish Airways
Deal found 10/9C$ 662
Tue 2/121:40 p.m.SEA - OSL
1 stop17h 40mDelta
Mon 15/129:25 a.m.OSL - SEA
1 stop35h 25mDelta
Deal found 11/9C$ 687
Tue 28/1011:25 a.m.SEA - OSL
2 stops20h 55mDelta
Fri 7/116:25 a.m.OSL - SEA
1 stop15h 55mDelta
Deal found 11/9C$ 691
Tue 2/121:40 p.m.SEA - OSL
1 stop17h 40mDelta
Wed 10/126:25 a.m.OSL - SEA
2 stops24h 56mDelta
Deal found 11/9C$ 700
Thu 4/122:35 p.m.SEA - OSL
1 stop12h 00mIcelandair
Tue 9/121:10 p.m.OSL - SEA
1 stop12h 50mIcelandair
Deal found 11/9C$ 701
Mon 8/122:05 p.m.SEA - OSL
1 stop17h 15mDelta
Sun 14/1212:40 p.m.OSL - SEA
1 stop32h 10mDelta
Deal found 11/9C$ 705
Wed 15/1012:45 p.m.SEA - OSL
2 stops19h 35mScandinavian Airlines
Mon 20/101:25 p.m.OSL - SEA
1 stop17h 57mScandinavian Airlines
Deal found 10/9C$ 708
Sat 6/129:59 p.m.SEA - OSL
2 stops33h 21mDelta
Mon 15/129:25 a.m.OSL - SEA
1 stop35h 25mDelta
Deal found 11/9C$ 710

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 11 September 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

Fri 5/12

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

1 stop12h 00m

Oslo Gardermoen

Tue 9/12

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

1 stop12h 50m

C$ 581

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 3/12

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

1 stop12h 00m

Oslo Gardermoen

Sun 7/12

9:30 p.m.-5:00 p.m.

1 stop28h 30m

C$ 633

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 3/12

2:05 p.m.-4:20 p.m.

1 stop17h 15m

Oslo Gardermoen

Wed 10/12

6:25 a.m.-7:58 p.m.

2 stops22h 33m

C$ 700

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 27/11

7:30 a.m.-11:15 a.m.

2 stops18h 45m

Oslo Gardermoen

Wed 10/12

11:00 a.m.-10:22 p.m.

2 stops20h 22m

C$ 705

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/12

11:55 p.m.-1:50 p.m.

2 stops28h 55m

Oslo Gardermoen

Tue 23/12

9:25 a.m.-11:50 a.m.

1 stop35h 25m

C$ 705

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 14/2

9:55 p.m.-8:40 a.m.

2 stops25h 45m

Oslo Gardermoen

Mon 23/2

12:40 p.m.-11:40 a.m.

1 stop32h 00m

C$ 712

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 7/12

2:05 p.m.-4:20 p.m.

1 stop17h 15m

Oslo Gardermoen

Wed 10/12

12:40 p.m.-11:50 a.m.

1 stop32h 10m

C$ 722

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 15/2

7:33 p.m.-6:50 p.m.

2 stops38h 17m

Oslo Gardermoen

Sun 22/3

9:25 a.m.-12:35 p.m.

1 stop35h 10m

C$ 722

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 15/2

7:20 a.m.-1:10 p.m.

2 stops20h 50m

Oslo Gardermoen

Fri 20/3

8:00 a.m.-10:16 p.m.

2 stops22h 16m

C$ 723

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 16/2

7:20 a.m.-1:10 p.m.

2 stops20h 50m

Oslo Gardermoen

Sat 21/2

10:00 a.m.-10:22 p.m.

2 stops21h 22m

C$ 723

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

Showing 1-10 of 17 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 29 August 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 11 September 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.

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 11 September 2025.
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
1,385 reviews
Check prices

Boarding

7.8

Overall

7.8

Entertainment

7.2

Food

7.3

Crew

8.4

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
KLM
7.8
Good
1,385 reviews
KLM
7.8
Good
1,385 reviews
Check prices

Boarding

7.8

Overall

7.8

Entertainment

7.2

Food

7.3

Crew

8.4

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
Scandinavian Airlines
7.4
Good
1,484 reviews
KLM
7.8
Good
1,385 reviews
Check prices

Boarding

7.8

Overall

7.8

Entertainment

7.2

Food

7.3

Crew

8.4

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
Icelandair
7.0
Good
546 reviews
KLM
7.8
Good
1,385 reviews
Check prices

Boarding

7.8

Overall

7.8

Entertainment

7.2

Food

7.3

Crew

8.4

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.
Lufthansa
6.8
Okay
7,409 reviews
KLM
7.8
Good
1,385 reviews
Check prices

Boarding

7.8

Overall

7.8

Entertainment

7.2

Food

7.3

Crew

8.4

Comfort

7.7

Reviews

1 / 20
4.0
Okay

Mark,Sep 2025

AMS - BHX

Crew and snacks were good, boarding wasn't great as busses were used rather than boarding tunnels. Also endured a one hour delay.

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.

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

    Icelandair and Delta can get you from Seattle to Oslo Gardermoen Airport in just under 12h. Your travel time can differ by up to 5h 15m. There are 7324 km between Seattle and Oslo Gardermoen Airport. Both multi-stop and direct flights can be found to your destination and back.

  • 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$ 596. Other airlines that can offer you cheap pricing are KLM, from C$ 597, and Scandinavian Airlines, from C$ 713. Icelandair is 30% 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, 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 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 596AverageC$ 726FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapestC$ 597AverageC$ 597FlexibilityNo cancel feeOn-time75%
Search KLM flights
Scandinavian AirlinesCheapestC$ 713AverageC$ 766FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
LufthansaCheapestC$ 888AverageC$ 892FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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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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