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$296+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Jan 3 — Jan 101
Sat 1/3
Sat 1/10
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 4, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:05 amSEA - OSL
2 stops22h 35mLufthansa
Fri 12/126:15 amOSL - SEA
1 stop14h 55mLufthansa
Deal found 12/2$458
This Kiwi.com deal was found by Cheapflights users on 12/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/42:00 pmSEA - OSL
1 stop16h 40mLufthansa
Fri 12/126:15 amOSL - SEA
1 stop14h 55mLufthansa
Deal found 12/2$486
This Kiwi.com deal was found by Cheapflights users on 12/2. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/87:00 amSEA - OSL
2 stops25h 30mLufthansa
Wed 12/106:30 pmOSL - SEA
1 stop26h 40mLufthansa
Deal found 12/2$490
This Mytrip deal was found by Cheapflights users on 12/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/510:05 amSEA - OSL
2 stops22h 35mMultiple Airlines
Fri 12/126:15 amOSL - SEA
1 stop14h 55mMultiple Airlines
Deal found 12/2$496
This Cheapflightsfares deal was found by Cheapflights users on 12/4. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/41:40 pmSEA - OSL
2 stops19h 10mLufthansa
Mon 12/156:15 amOSL - SEA
1 stop14h 55mLufthansa
Deal found 12/4$510
This Delta deal was found by Cheapflights users on 12/2. 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 12/32:05 pmSEA - OSL
1 stop17h 15mDelta
Thu 12/116:30 amOSL - SEA
1 stop14h 20mDelta
Deal found 12/2$515
This KAYAK deal was found by Cheapflights users on 12/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/83:25 pmSEA - OSL
2 stops35h 45mSWISS
Sun 12/141:00 pmOSL - SEA
2 stops43h 15mSWISS
Deal found 12/1$518
This Mytrip deal was found by Cheapflights users on 12/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/282:35 pmSEA - TRF
2 stops20h 10mMultiple Airlines
Sat 1/34:20 pmTRF - SEA
2 stops35h 00mMultiple Airlines
Deal found 12/3$1,727
This Mytrip deal was found by Cheapflights users on 12/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/213:10 pmSEA - TRF
2 stops16h 00mMultiple Airlines
Thu 1/14:40 pmTRF - SEA
3 stops28h 30mMultiple Airlines
Deal found 12/3$3,723

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 4, 2025.

Round-trip from

$390
(lastminute.com)

One-way from

$296
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$575
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. 19% potential increase in price ($145 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
Search Deals

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 4, 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 2/28

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Mon 3/16

1:10 pm-6:00 pm

1 stop12h 50m

$419

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 1/10

2:35 pm-8:35 pm

1 stop21h 00m

Oslo Gardermoen

Sat 1/17

1:10 pm-5:00 pm

1 stop12h 50m

$423

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 2/19

6:50 pm-10:30 am

1 stop30h 40m

Oslo Gardermoen

Tue 3/3

11:45 am-4:55 pm

1 stop14h 10m

$482

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 3/4

7:30 am-1:50 pm

2 stops21h 20m

Oslo Gardermoen

Wed 3/11

6:25 am-2:05 pm

1 stop15h 40m

$499

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 3/2

7:30 am-6:50 pm

2 stops26h 20m

Oslo Gardermoen

Tue 3/17

6:25 am-12:25 pm

1 stop14h 00m

$500

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 3/2

7:30 am-1:50 pm

2 stops21h 20m

Oslo Gardermoen

Thu 3/12

6:25 am-12:25 pm

1 stop14h 00m

$500

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 3/3

7:10 am-1:50 pm

2 stops21h 40m

Oslo Gardermoen

Tue 3/17

6:25 am-12:25 pm

1 stop14h 00m

$500

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 3/2

7:30 am-6:50 pm

2 stops26h 20m

Oslo Gardermoen

Mon 3/16

9:25 am-12:35 pm

1 stop35h 10m

$501

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 3/3

7:10 am-1:50 pm

2 stops21h 40m

Oslo Gardermoen

Mon 3/16

9:25 am-12:35 pm

1 stop35h 10m

$501

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 2/26

7:30 am-1:50 pm

2 stops21h 20m

Oslo Gardermoen

Thu 3/12

6:25 am-12:25 pm

1 stop14h 00m

$502

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 38 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 November 28, 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 $339). 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 4, 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.

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 4, 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
8,011 reviews

Overall

7.9

Food

7.3

Boarding

8.1

Crew

8.5

Comfort

7.9

Entertainment

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
8,011 reviews
Delta
7.9
Good
8,011 reviews

Overall

7.9

Food

7.3

Boarding

8.1

Crew

8.5

Comfort

7.9

Entertainment

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
1,592 reviews
Delta
7.9
Good
8,011 reviews

Overall

7.9

Food

7.3

Boarding

8.1

Crew

8.5

Comfort

7.9

Entertainment

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
584 reviews
Delta
7.9
Good
8,011 reviews

Overall

7.9

Food

7.3

Boarding

8.1

Crew

8.5

Comfort

7.9

Entertainment

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
7,612 reviews
Delta
7.9
Good
8,011 reviews

Overall

7.9

Food

7.3

Boarding

8.1

Crew

8.5

Comfort

7.9

Entertainment

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
7,562 reviews
Delta
7.9
Good
8,011 reviews

Overall

7.9

Food

7.3

Boarding

8.1

Crew

8.5

Comfort

7.9

Entertainment

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 Scandinavian Airlines can get you from Seattle to Oslo in just under 12h. Your travel time can differ by up to 18h 40m. 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 $339). 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

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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 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$354Average$628FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$403Average$548FlexibilityNo cancel feeOn-time76%
DeltaCheapest$478Average$810FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$484Average$730FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$492Average$718FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$517Average$840FlexibilityNo cancel feeOn-time69%
KLMCheapest$524Average$763FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$551Average$741FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$552Average$615FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$564Average$673FlexibilityNo cancel feeOn-time71%

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