HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Oslo

$230+ 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Aug 20 — Aug 271
Thu 8/20
Thu 8/27
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 July 21, 2026.

This Justfly.com deal was found by Cheapflights users on 7/20. 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.
Wed 10/218:25 am
SEA
-
OSL
2 stops18h 10m
Austrian Airlines
Wed 11/112:20 pm
OSL
-
SEA
2 stops39h 18m
Austrian Airlines
Deal found 7/20$492
This United Airlines deal was found by Cheapflights users on 7/20. 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 8/193:54 pm
SEA
-
OSL
2 stops21h 11m
United Airlines
Wed 8/267:10 am
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 7/20$493
This oojo deal was found by Cheapflights users on 7/20. 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.
Tue 10/67:00 pm
SEA
-
OSL
1 stop11h 25m
Icelandair
Wed 10/281:10 pm
OSL
-
SEA
1 stop12h 50m
Icelandair
Deal found 7/20$494
This oojo deal was found by Cheapflights users on 7/21. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm
SEA
-
OSL
1 stop14h 45m
Icelandair
Sat 10/171:50 pm
OSL
-
SEA
1 stop13h 05m
Icelandair
Deal found 7/21$496
This FlightHub deal was found by Cheapflights users on 7/20. 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.
Wed 11/47:05 pm
SEA
-
OSL
2 stops37h 35m
Multiple Airlines
Sat 4/176:25 am
OSL
-
SEA
2 stops21h 55m
Multiple Airlines
Deal found 7/20$497
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 10/207:00 pm
SEA
-
OSL
1 stop11h 25m
Icelandair
Mon 11/91:10 pm
OSL
-
SEA
1 stop12h 50m
Icelandair
Deal found 7/20$498
This United Airlines deal was found by Cheapflights users on 7/19. 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.
Sun 10/116:50 pm
SEA
-
OSL
1 stop18h 15m
United Airlines
Thu 10/157:10 am
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 7/19$499
This KAYAK deal was found by Cheapflights users on 7/20. 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.
Tue 10/207:00 am
SEA
-
OSL
2 stops45h 15m
SWISS
Sun 11/151:00 pm
OSL
-
SEA
2 stops43h 16m
SWISS
Deal found 7/20$500
This Justfly.com deal was found by Cheapflights users on 7/16. 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 10/116:50 pm
SEA
-
OSL
1 stop18h 15m
Lufthansa
Sun 10/186:25 am
OSL
-
SEA
2 stops16h 57m
Lufthansa
Deal found 7/16$501
This United Airlines deal was found by Cheapflights users on 7/17. 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 9/28:40 am
SEA
-
OSL
2 stops24h 15m
United Airlines
Wed 9/167:10 am
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 7/17$504
This United Airlines deal was found by Cheapflights users on 7/17. 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 10/2511:16 pm
SEA
-
OSL
2 stops27h 44m
United Airlines
Tue 11/106:45 am
OSL
-
SEA
2 stops22h 53m
United Airlines
Deal found 7/17$505
This oojo deal was found by Cheapflights users on 7/19. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:55 pm
SEA
-
TRF
1 stop23h 30m
Scandinavian Airlines
Tue 9/296:00 am
TRF
-
SEA
1 stop16h 45m
Scandinavian Airlines
Deal found 7/19$516

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 July 21, 2026.

Round-trip from

$492
(Justfly.com)

One-way from

$230
(oojo)

Popular in

June

Cheapest in

January

Average price

$653
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. 11% potential increase in price ($75 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 July 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 July 21, 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

Wed 11/18

2:50 pm-5:40 pm

1 stop17h 50m

Oslo Gardermoen

Mon 11/30

6:15 am-12:00 pm

1 stop14h 45m

$508

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 11/1

7:00 am-5:10 pm

2 stops25h 10m

Oslo Gardermoen

Tue 11/10

6:45 am-9:21 pm

2 stops23h 36m

$509
Quickest round-trip

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 12/29

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Fri 1/8

1:10 pm-5:00 pm

1 stop12h 50m

$512

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 9/2

8:40 am-5:55 pm

2 stops24h 15m

Oslo Gardermoen

Wed 9/16

6:35 am-2:22 pm

2 stops16h 47m

$512

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 10/11

10:58 pm-5:15 pm

2 stops33h 17m

Oslo Gardermoen

Thu 10/15

6:45 am-10:42 pm

2 stops24h 57m

$515

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 10/5

7:00 am-5:15 pm

2 stops25h 15m

Oslo Gardermoen

Sat 10/17

7:15 am-4:59 pm

1 stop18h 44m

$517

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

Sun 8/2

5:45 pm-6:35 pm

1 stop15h 50m

Oslo Gardermoen

Fri 8/21

9:20 am-8:35 pm

2 stops20h 15m

$639

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/10

5:00 am-5:55 pm

2 stops27h 55m

Oslo Gardermoen

Tue 8/25

6:45 am-7:08 pm

3 stops45h 23m

$640

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Sun 10/11

3:55 pm-12:25 am

1 stop23h 30m

Oslo Sandefjord

Thu 10/15

6:00 am-10:59 pm

2 stops25h 59m

$643

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 35 resultsSorted by cheapest first
1
2
3
4

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, January is the cheapest month in which you can book a flight from Seattle to Oslo (average of $422). Flying from Seattle to Oslo in June is currently the most expensive (average of $670). 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 July 21, 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
1,543 reviews

Comfort

7.7

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.3

Entertainment

7.2

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
KLM
7.8
Good
1,543 reviews
KLM
7.8
Good
1,543 reviews

Comfort

7.7

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.3

Entertainment

7.2

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
Delta
7.8
Good
8,474 reviews
KLM
7.8
Good
1,543 reviews

Comfort

7.7

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.3

Entertainment

7.2

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
Scandinavian Airlines
7.4
Good
1,891 reviews
KLM
7.8
Good
1,543 reviews

Comfort

7.7

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.3

Entertainment

7.2

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
Icelandair
7.0
Good
715 reviews
KLM
7.8
Good
1,543 reviews

Comfort

7.7

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.3

Entertainment

7.2

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
Lufthansa
6.8
Okay
8,152 reviews
KLM
7.8
Good
1,543 reviews

Comfort

7.7

Overall

7.8

Boarding

7.8

Crew

8.4

Food

7.3

Entertainment

7.2

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.

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 12h. Your travel time can differ by up to 11h 30m. 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 $224. 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, January is the cheapest month in which you can book a flight from Seattle to Oslo (average of $422). Flying from Seattle to Oslo in June is currently the most expensive (average of $670). 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
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 July 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$351Average$545FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$393Average$544FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$426Average$641FlexibilityNo cancel feeOn-time77%
DeltaCheapest$457Average$676FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$490Average$684FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$491Average$545FlexibilityNo cancel feeOn-time69%
KLMCheapest$506Average$647FlexibilityNo 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.