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Oslo

$206+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Jul 29 — Aug 51
Wed 7/29
Wed 8/5
1 adult, Economy
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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 June 29, 2026.

This Justfly.com deal was found by Cheapflights users on 6/28. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:50 pm
SEA
-
OSL
1 stop14h 10m
Lufthansa
Tue 9/296:55 am
OSL
-
SEA
2 stops16h 27m
Lufthansa
Deal found 6/28$510
This Kiwi.com deal was found by Cheapflights users on 6/29. 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.
Tue 8/187:00 pm
SEA
-
OSL
1 stop11h 25m
Icelandair
Fri 9/114:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 6/29$511
This Icelandair deal was found by Cheapflights users on 6/29. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:00 pm
SEA
-
OSL
1 stop11h 25m
Icelandair
Fri 9/114:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 6/29$512
This Icelandair deal was found by Cheapflights users on 6/29. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:00 pm
SEA
-
OSL
1 stop11h 25m
Icelandair
Tue 9/84:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 6/29$513
This Air Canada deal was found by Cheapflights users on 6/28. 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.
Sun 9/138:00 am
SEA
-
OSL
2 stops21h 50m
Air Canada
Tue 9/296:55 am
OSL
-
SEA
2 stops16h 27m
Air Canada
Deal found 6/28$514
This United Airlines deal was found by Cheapflights users on 6/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:40 am
SEA
-
OSL
2 stops24h 15m
United Airlines
Fri 9/116:45 am
OSL
-
SEA
2 stops18h 22m
United Airlines
Deal found 6/29$515
This Air Canada deal was found by Cheapflights users on 6/28. 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.
Sun 9/138:00 am
SEA
-
OSL
2 stops21h 50m
Air Canada
Mon 9/286:45 am
OSL
-
SEA
2 stops23h 19m
Air Canada
Deal found 6/28$516
This United Airlines deal was found by Cheapflights users on 6/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/22:00 pm
SEA
-
OSL
1 stop18h 30m
United Airlines
Wed 11/116:15 am
OSL
-
SEA
1 stop14h 45m
United Airlines
Deal found 6/25$517
This Air Canada deal was found by Cheapflights users on 6/28. 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.
Mon 9/148:00 am
SEA
-
OSL
2 stops24h 15m
Air Canada
Wed 9/306:35 am
OSL
-
SEA
2 stops25h 07m
Air Canada
Deal found 6/28$518
This United Airlines deal was found by Cheapflights users on 6/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/35:15 pm
SEA
-
OSL
2 stops39h 00m
United Airlines
Sat 8/226:15 am
OSL
-
SEA
2 stops21h 52m
United Airlines
Deal found 6/27$519
This United Airlines deal was found by Cheapflights users on 6/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/182:10 pm
SEA
-
OSL
1 stop13h 05m
United Airlines
Sun 8/307:10 am
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 6/28$520
This FlightHub deal was found by Cheapflights users on 6/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/82:10 pm
SEA
-
OSL
1 stop18h 55m
Lufthansa
Sun 9/206:25 am
OSL
-
SEA
2 stops25h 17m
Lufthansa
Deal found 6/28$521

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 June 29, 2026.

Round-trip from

$510
(Justfly.com)

One-way from

$206
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$670
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. 10% potential increase in price ($65 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
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 June 29, 2026.
Use the filters below to find and compare flights from Seattle to Oslo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 9/15

7:00 am-5:15 pm

2 stops25h 15m

Oslo Gardermoen

Tue 9/29

6:55 am-2:22 pm

2 stops16h 27m

$524

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 8/20

8:00 am-6:15 pm

2 stops25h 15m

Oslo Gardermoen

Sun 8/30

7:10 am-4:59 pm

1 stop18h 49m

$528

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 9/10

8:10 am-6:15 pm

2 stops25h 05m

Oslo Gardermoen

Mon 9/21

6:45 am-4:07 pm

2 stops18h 22m

$537

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Tue 9/15

3:55 pm-12:25 am

1 stop23h 30m

Oslo Sandefjord

Tue 9/29

6:00 am-1:45 pm

1 stop16h 45m

$547

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 9/16

9:50 pm-8:40 pm

1 stop13h 50m

Oslo Gardermoen

Fri 9/25

6:30 am-4:30 pm

2 stops19h 00m

$606

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 8/8

5:45 pm-8:55 pm

1 stop18h 10m

Oslo Gardermoen

Sun 8/16

10:45 am-5:34 pm

1 stop15h 49m

$620

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 7/27

5:40 pm-8:55 pm

1 stop18h 15m

Oslo Gardermoen

Mon 8/3

7:00 am-5:34 pm

1 stop19h 34m

$620

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 8/25

6:50 pm-6:00 pm

1 stop14h 10m

Oslo Gardermoen

Thu 9/10

7:10 am-4:59 pm

1 stop18h 49m

$622

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/3

10:29 am-5:55 pm

2 stops22h 26m

Oslo Gardermoen

Thu 8/13

7:10 am-4:59 pm

1 stop18h 49m

$627

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 10/3

2:10 pm-9:05 am

1 stop33h 55m

Oslo Gardermoen

Fri 10/9

6:25 am-12:20 pm

1 stop14h 55m

$627

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/25

Showing 1-10 of 45 resultsSorted by cheapest first
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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

What is the cheapest month to book a flight from Seattle to Oslo?

Currently, September is the cheapest month in which you can book a flight from Seattle to Oslo (average of $245). Flying from Seattle to Oslo in June is currently the most expensive (average of $493). 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?

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

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 82 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 June 29, 2026.
See what other customers who have flown with KLM,Delta, andScandinavian Airlines 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.
KLM
7.8
Good
1,531 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.2

Overall

7.8

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,531 reviews
KLM
7.8
Good
1,531 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.2

Overall

7.8

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Delta
7.8
Good
8,452 reviews
KLM
7.8
Good
1,531 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.2

Overall

7.8

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Scandinavian Airlines
7.4
Good
1,860 reviews
KLM
7.8
Good
1,531 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.2

Overall

7.8

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Icelandair
7.0
Good
694 reviews
KLM
7.8
Good
1,531 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.2

Overall

7.8

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Lufthansa
6.8
Okay
8,109 reviews
KLM
7.8
Good
1,531 reviews

Crew

8.4

Food

7.3

Boarding

7.8

Entertainment

7.2

Overall

7.8

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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 7 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?

    Lufthansa, Icelandair, and Air Canada can get you from Seattle to Oslo in just under 14h 10m. Your travel time can differ by up to 7h 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 ($351), Icelandair ($393), and Scandinavian Airlines ($426) offers the cheapest pricing from Seattle to Oslo. British Airways is 36% 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. KLM flights start at $225 while deals on Delta start at $226 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, September is the cheapest month in which you can book a flight from Seattle to Oslo (average of $245). Flying from Seattle to Oslo in June is currently the most expensive (average of $493). 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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Alternative routes for Seattle to Oslo

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Oslo Gardermoen flights
Seattle to Stavanger flights
Seattle to Bodø flights
Portland to Stavanger flights

Top 7 airlines flying from Seattle to Oslo

Discover the top 7 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 June 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$351Average$530FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$393Average$542FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$426Average$667FlexibilityNo cancel feeOn-time77%
DeltaCheapest$457Average$679FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$491Average$542FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$493Average$640FlexibilityNo cancel feeOn-time76%
KLMCheapest$498Average$626FlexibilityNo cancel feeOn-time75%

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