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$319+ Cheap flights from Seattle (SEA) to Oslo

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Oslo are usually found in January 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

Cheapest flights from Seattle to Oslo
Explore the most affordable flight options available from Seattle to Oslo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This KLM deal was found by Cheapflights users on 12/11. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/293:05 pmSEA - OSL
1 stop20h 55mKLM
Tue 1/139:25 amOSL - SEA
1 stop35h 25mKLM
Deal found 12/11$523
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/103:05 pmSEA - OSL
1 stop18h 10mDelta
Mon 1/127:50 amOSL - SEA
1 stop15h 59mDelta
Deal found 12/10$539
This Air Canada deal was found by Cheapflights users on 12/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:10 amSEA - OSL
2 stops43h 00mAir Canada
Mon 1/1211:50 amOSL - SEA
2 stops43h 26mAir Canada
Deal found 12/10$546
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/103:05 pmSEA - OSL
1 stop18h 10mDelta
Sun 1/1112:40 pmOSL - SEA
2 stops36h 55mDelta
Deal found 12/10$570
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/113:05 pmSEA - OSL
1 stop18h 10mDelta
Mon 1/127:50 amOSL - SEA
1 stop15h 59mDelta
Deal found 12/10$576
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/103:05 pmSEA - OSL
1 stop18h 10mDelta
Sat 1/101:05 pmOSL - SEA
2 stops43h 17mDelta
Deal found 12/10$580
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/113:05 pmSEA - OSL
1 stop18h 10mDelta
Sun 1/1112:40 pmOSL - SEA
2 stops36h 55mDelta
Deal found 12/10$607
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/113:05 pmSEA - OSL
1 stop16h 10mDelta
Sat 1/101:05 pmOSL - SEA
2 stops43h 17mDelta
Deal found 12/10$617
This Delta deal was found by Cheapflights users on 12/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/293:05 pmSEA - OSL
1 stop18h 10mDelta
Tue 1/139:25 amOSL - SEA
2 stops22h 00mDelta
Deal found 12/10$630
This Gotogate deal was found by Cheapflights users on 12/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/242:35 pmSEA - OSL
2 stops32h 45mMultiple Airlines
Mon 3/21:10 pmOSL - SEA
1 stop12h 50mMultiple Airlines
Deal found 12/10$690

Find flight deals from Seattle to Oslo

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Oslo (OS1). 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 December 12, 2025.

Round-trip from

$390
(Mytrip)

One-way from

$319
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$666
From Seattle/Tacoma Intl to Oslo
Search Deals
One-way flight from Seattle/Tacoma Intl to Oslo
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($131 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Oslo 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 December 12, 2025.
Use the filters below to find and compare flights from Seattle to Oslo that are best for you.

Fly from

Seattle

Fly to

Oslo

Route

Depart

Return

Price

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 1/24

2:35 pm-8:35 pm

1 stop21h 00m

Oslo Gardermoen

Sat 1/31

1:10 pm-5:00 pm

1 stop12h 50m

$390

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 2/2

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sun 2/8

1:05 pm-5:00 pm

1 stop12h 55m

$392

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 3/4

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sat 3/14

1:10 pm-6:25 pm

1 stop13h 15m

$456

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 1/11

6:50 pm-10:55 am

1 stop31h 05m

Oslo Gardermoen

Mon 1/26

2:40 pm-11:30 am

1 stop29h 50m

$485

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 2/19

10:55 am-5:40 pm

2 stops21h 45m

Oslo Gardermoen

Tue 3/3

6:15 am-12:10 pm

1 stop14h 55m

$493

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 2/2

8:04 am-10:40 pm

2 stops29h 36m

Oslo Gardermoen

Sun 2/8

7:20 am-4:55 pm

1 stop18h 35m

$496

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 1/22

6:50 pm-11:35 pm

1 stop19h 45m

Oslo Gardermoen

Tue 1/27

11:45 am-4:55 pm

1 stop14h 10m

$498

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 1/8

2:10 pm-11:45 pm

2 stops24h 35m

Oslo Gardermoen

Thu 1/15

6:15 am-12:10 pm

1 stop14h 55m

$504

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Wed 1/7

7:10 am-2:05 pm

2 stops21h 55m

Oslo Sandefjord

Mon 3/30

6:00 am-10:05 pm

2 stops25h 05m

$806

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Wed 1/7

7:10 am-2:05 pm

2 stops21h 55m

Oslo Sandefjord

Sun 3/29

3:05 pm-10:05 pm

2 stops40h 00m

$806

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 40 results
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Best time to book a flight from Seattle to Oslo

Have a flexible travel schedule? Discover the best time to fly to Oslo 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

How far ahead should I book a flight from Seattle to Oslo?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Oslo. Price data was last updated on December 5, 2025.

The price you pay for your flight from Seattle to Oslo 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?

Currently, January is the cheapest month in which you can book a flight from Seattle to Oslo (average of $340). Flying from Seattle to Oslo in June is currently the most expensive (average of $537). 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. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

It’s optimal to fly from Seattle to Oslo in the evening. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight in the afternoon.

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

Reviews of airlines servicing Oslo

Get insights into the airlines that provide service to Oslo. 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. Reviews last updated December 12, 2025.
See what other customers who have flown with Delta, Scandinavian Airlines, and Icelandair from Seattle to Oslo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Scandinavian Airlines
7.4
Good
1,605 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Icelandair
7.0
Good
589 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Lufthansa
6.8
Okay
7,626 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,571 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Oslo. 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?

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Oslo. You should not have trouble finding flights to Oslo from Seattle/Tacoma Intl; the airport handles an average of 0 outbound flights to Oslo per day. You should also have plenty of airline options to choose from since 10 airlines have flights from the Seattle airport to Oslo. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

  • How long is the flight from Seattle to Oslo?

    Icelandair, British Airways, and Lufthansa can get you from Seattle to Oslo in just under 21h. Your travel time can differ by up to 10h 05m. The distance from Seattle to Oslo is about 4551 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, British Airways ($354), Icelandair ($402), and Delta ($478) offers the cheapest pricing from Seattle to Oslo. British Airways is 40% 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 one-way?

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at $188. Scandinavian Airlines flights start at $287 while deals on Lufthansa start at $372 one-way.

  • Can I find deals for flights from Seattle to Oslo that include hotel bookings?

    Yes. In addition to deals on Seattle to Oslo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Oslo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Oslo.

  • Can I find deals for business class flights from Seattle to Oslo?

    Yes. Cheapflights offers flight deals from Seattle to Oslo 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?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Oslo (average of $340). Flying from Seattle to Oslo in June is currently the most expensive (average of $537). 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 10 airlines flying from Seattle to Oslo

Discover the top 10 airlines that operate flights from Seattle to Oslo. 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$354Average$612FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$403Average$547FlexibilityNo cancel feeOn-time76%
DeltaCheapest$478Average$827FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$491Average$744FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$492Average$718FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$517Average$840FlexibilityNo cancel feeOn-time69%
KLMCheapest$524Average$762FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$551Average$739FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$552Average$615FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$564Average$673FlexibilityNo cancel feeOn-time71%

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