HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Oslo

$193+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Jul 22 — Jul 291
Wed 7/22
Wed 7/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Oslo with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 22, 2026.

This Justfly.com deal was found by Cheapflights users on 6/18. 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 9/297:10 am
OSL
-
SEA
1 stop18h 49m
Lufthansa
Deal found 6/18$510
This United Airlines deal was found by Cheapflights users on 6/19. 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 9/156:50 pm
SEA
-
OSL
1 stop14h 10m
United Airlines
Tue 9/297:10 am
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 6/19$511
This oojo deal was found by Cheapflights users on 6/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/12:00 pm
SEA
-
OSL
1 stop18h 30m
Lufthansa
Tue 11/106:25 pm
OSL
-
SEA
1 stop27h 35m
Lufthansa
Deal found 6/18$512
This oojo deal was found by Cheapflights users on 6/22. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/36:50 pm
SEA
-
OSL
1 stop14h 05m
Lufthansa
Tue 8/257:10 am
OSL
-
SEA
1 stop18h 49m
Lufthansa
Deal found 6/22$514
This Icelandair deal was found by Cheapflights users on 6/18. 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 8/284:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 6/18$515
This United Airlines deal was found by Cheapflights users on 6/21. 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 9/110:58 pm
SEA
-
OSL
2 stops33h 17m
United Airlines
Thu 9/106:45 am
OSL
-
SEA
1 stop14h 10m
United Airlines
Deal found 6/21$516
This Justfly.com deal was found by Cheapflights users on 6/19. 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.
Sun 8/306:50 pm
SEA
-
OSL
1 stop18h 15m
Multiple Airlines
Sat 9/196:45 am
OSL
-
SEA
2 stops22h 33m
Multiple Airlines
Deal found 6/19$517
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Sun 9/206:50 pm
SEA
-
OSL
1 stop18h 15m
United Airlines
Tue 9/296:55 am
OSL
-
SEA
2 stops16h 27m
United Airlines
Deal found 6/22$518
This Gotogate deal was found by Cheapflights users on 6/21. 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.
Thu 8/202:10 pm
SEA
-
OSL
1 stop19h 05m
Multiple Airlines
Thu 8/276:45 am
OSL
-
SEA
2 stops23h 22m
Multiple Airlines
Deal found 6/21$519
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Thu 10/1510:30 am
SEA
-
OSL
2 stops16h 50m
United Airlines
Fri 10/237:15 am
OSL
-
SEA
1 stop18h 44m
United Airlines
Deal found 6/22$521
This Cheapflightsfares deal was found by Cheapflights users on 6/21. 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.
Tue 8/253:55 pm
SEA
-
TRF
1 stop13h 35m
Scandinavian Airlines
Tue 9/16:00 am
TRF
-
SEA
1 stop16h 45m
Scandinavian Airlines
Deal found 6/21$643
This FlightHub deal was found by Cheapflights users on 6/18. 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.
Sun 8/23:55 pm
SEA
-
TRF
1 stop19h 30m
Scandinavian Airlines
Tue 8/116:00 am
TRF
-
SEA
1 stop16h 45m
Scandinavian Airlines
Deal found 6/18$664

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 22, 2026.

Round-trip from

$510
(Justfly.com)

One-way from

$193
(oojo)

Popular in

June

Cheapest in

January

Average price

$681
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 ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 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 22, 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

Sun 11/1

7:00 am-5:10 pm

2 stops25h 10m

Oslo Gardermoen

Tue 11/10

6:15 am-10:53 pm

2 stops25h 38m

$516
Quickest round-trip

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 10/17

7:00 pm-3:25 pm

1 stop11h 25m

Oslo Gardermoen

Mon 10/26

1:10 pm-6:00 pm

1 stop12h 50m

$524

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

$526

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 10/14

3:40 pm-12:15 pm

1 stop11h 35m

Oslo Gardermoen

Thu 10/22

1:30 pm-5:55 pm

1 stop13h 25m

$606

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 8/11

9:00 am-10:05 pm

2 stops28h 05m

Oslo Gardermoen

Fri 8/21

6:25 am-10:07 am

2 stops36h 42m

$627

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/3

1:30 pm-10:05 pm

2 stops23h 35m

Oslo Gardermoen

Wed 8/26

7:10 am-8:18 pm

2 stops22h 08m

$629

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Tue 8/25

3:55 pm-2:30 pm

1 stop13h 35m

Oslo Sandefjord

Tue 9/1

6:00 am-1:45 pm

1 stop16h 45m

$643

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 12/13

10:40 pm-5:10 pm

2 stops33h 30m

Oslo Gardermoen

Sat 12/19

11:50 am-11:21 pm

2 stops20h 31m

$649

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 8/2

5:00 am-10:05 pm

2 stops32h 05m

Oslo Gardermoen

Wed 8/12

7:10 am-4:59 pm

1 stop18h 49m

$653

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 8/1

5:45 pm-8:55 pm

1 stop18h 10m

Oslo Gardermoen

Thu 8/13

6:30 am-11:15 am

1 stop13h 45m

$655

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/20

Showing 1-10 of 43 resultsSorted by cheapest first
1
2
3
...
5

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 81 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 22, 2026.
See what other customers who have flown with Delta,Scandinavian Airlines, andIcelandair 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
7.8
Good
8,425 reviews

Comfort

7.8

Food

7.2

Entertainment

7.8

Overall

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Delta
7.8
Good
8,425 reviews
Delta
7.8
Good
8,425 reviews

Comfort

7.8

Food

7.2

Entertainment

7.8

Overall

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Scandinavian Airlines
7.4
Good
1,848 reviews
Delta
7.8
Good
8,425 reviews

Comfort

7.8

Food

7.2

Entertainment

7.8

Overall

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Icelandair
7.0
Good
683 reviews
Delta
7.8
Good
8,425 reviews

Comfort

7.8

Food

7.2

Entertainment

7.8

Overall

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
Lufthansa
6.8
Okay
8,088 reviews
Delta
7.8
Good
8,425 reviews

Comfort

7.8

Food

7.2

Entertainment

7.8

Overall

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional
British Airways
6.7
Okay
8,064 reviews
Delta
7.8
Good
8,425 reviews

Comfort

7.8

Food

7.2

Entertainment

7.8

Overall

7.8

Crew

8.5

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

SEA - KOA

The snacks were not very good, not everyone was very friendly and professional

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?

    United Airlines, Icelandair, and Scandinavian Airlines can get you from Seattle to Oslo in just under 11h 25m. Your travel time can differ by up to 13h 45m. 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 ($353), Icelandair ($393), and Delta ($457) offers the cheapest pricing from Seattle to Oslo. British Airways is 35% 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
Portland to Stavanger flights
Seattle to Bodø 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 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$353Average$525FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$393Average$541FlexibilityNo cancel feeOn-time76%
DeltaCheapest$457Average$648FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$476Average$658FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$491Average$542FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$493Average$640FlexibilityNo cancel feeOn-time76%
KLMCheapest$498Average$625FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.