HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Oslo

$291+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Aug 2 — Aug 91
Sat 8/2
Sat 8/9
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.

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

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 28, 2025.

Round-trip from

$431
(oojo)

One-way from

$291
(Cheapflightsfares)

Popular in

June

Cheapest in

January

Average price

$740
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. 15% potential increase in price ($114 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

Find 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 28, 2025.

This oojo deal was found by Cheapflights users on 7/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/53:45 pmSEA - OSL
1 stop11h 50mIcelandair
Sun 10/191:50 pmOSL - SEA
1 stop15h 50mIcelandair
Deal found 7/27$431
This Scandinavian Airlines deal was found by Cheapflights users on 7/27. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/54:20 pmSEA - OSL
1 stop11h 35mScandinavian Airlines
Tue 10/218:55 pmOSL - SEA
1 stop26h 05mScandinavian Airlines
Deal found 7/27$469
This Ovago deal was found by Cheapflights users on 7/26. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/36:50 pmSEA - OSL
1 stop18h 50mBritish Airways
Tue 11/117:25 pmOSL - SEA
1 stop30h 30mBritish Airways
Deal found 7/26$471
This Kiwi.com deal was found by Cheapflights users on 7/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/114:25 pmSEA - OSL
1 stop22h 30mSWISS
Tue 8/265:40 amOSL - SEA
2 stops25h 40mSWISS
Deal found 7/27$474
This Booking.com deal was found by Cheapflights users on 7/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/111:45 pmSEA - OSL
2 stops16h 55mAir Canada
Tue 8/266:45 amOSL - SEA
2 stops23h 00mAir Canada
Deal found 7/27$483
This Lufthansa deal was found by Cheapflights users on 7/26. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/176:50 pmSEA - OSL
1 stop14h 15mMultiple Airlines
Mon 8/255:40 amOSL - SEA
1 stop18h 15mMultiple Airlines
Deal found 7/26$487
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2811:42 amSEA - OSL
2 stops18h 28mAmerican Airlines
Fri 11/77:10 amOSL - SEA
2 stops20h 59mAmerican Airlines
Deal found 7/27$490
This Air France deal was found by Cheapflights users on 7/28. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/116:40 pmSEA - OSL
1 stop18h 50mAir France
Fri 8/226:05 amOSL - SEA
1 stop14h 10mAir France
Deal found 7/28$494
This Delta deal was found by Cheapflights users on 7/26. 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.
Tue 8/126:40 pmSEA - OSL
1 stop32h 10mDelta
Tue 8/196:30 amOSL - SEA
1 stop14h 05mDelta
Deal found 7/26$497
This KLM deal was found by Cheapflights users on 7/26. 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.
Wed 8/132:10 pmSEA - OSL
1 stop14h 30mKLM
Mon 8/187:15 pmOSL - SEA
1 stop25h 20mKLM
Deal found 7/26$509
This Lufthansa deal was found by Cheapflights users on 7/27. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/282:20 pmSEA - OSL
1 stop16h 20mLufthansa
Thu 8/216:35 amOSL - SEA
1 stop14h 20mLufthansa
Deal found 7/27$522
This United Airlines deal was found by Cheapflights users on 7/26. 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 7/272:20 pmSEA - OSL
1 stop18h 40mUnited Airlines
Thu 8/217:15 amOSL - SEA
2 stops24h 44mUnited Airlines
Deal found 7/26$524

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 28, 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

Sun 10/5

3:45 pm-12:35 pm

1 stop11h 50m

Oslo Gardermoen

Sun 10/19

1:50 pm-8:40 pm

1 stop15h 50m

$431

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 10/5

4:20 pm-12:55 pm

1 stop11h 35m

Oslo Gardermoen

Tue 10/21

8:55 pm-2:00 pm

1 stop26h 05m

$469

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 11/3

6:50 pm-10:40 pm

1 stop18h 50m

Oslo Gardermoen

Tue 11/11

7:25 pm-4:55 pm

1 stop30h 30m

$471

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/11

4:25 pm-11:55 pm

1 stop22h 30m

Oslo Gardermoen

Tue 8/26

5:40 am-10:20 pm

2 stops25h 40m

$474

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/11

1:45 pm-3:40 pm

2 stops16h 55m

Oslo Gardermoen

Tue 8/26

6:45 am-8:45 pm

2 stops23h 00m

$483

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 8/17

6:50 pm-6:05 pm

1 stop14h 15m

Oslo Gardermoen

Mon 8/25

5:40 am-2:55 pm

1 stop18h 15m

$487

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 10/28

11:42 am-2:10 pm

2 stops18h 28m

Oslo Gardermoen

Fri 11/7

7:10 am-7:09 pm

2 stops20h 59m

$490

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/11

6:40 pm-10:30 pm

1 stop18h 50m

Oslo Gardermoen

Fri 8/22

6:05 am-11:15 am

1 stop14h 10m

$494

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 8/12

6:40 pm-11:50 am

1 stop32h 10m

Oslo Gardermoen

Tue 8/19

6:30 am-11:35 am

1 stop14h 05m

$497

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 8/13

2:10 pm-1:40 pm

1 stop14h 30m

Oslo Gardermoen

Mon 8/18

7:15 pm-11:35 am

1 stop25h 20m

$509

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 26 results
1
2
3

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 July 25, 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, November is the cheapest month in which you can book a flight from Seattle to Oslo (average of $567). Flying from Seattle to Oslo in June is currently the most expensive (average of $1,009). 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 July 28, 2025.

It’s optimal to fly from Seattle to Oslo in the evening. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Seattle to Oslo?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Oslo. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Oslo flight should consider departing on Sunday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 July 28, 2025.
See what other customers who have flown with Delta, KLM, and SWISS 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
8.0
Very good
7,971 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,971 reviews
Delta
8.0
Very good
7,971 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,381 reviews
Delta
8.0
Very good
7,971 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.6
Good
1,679 reviews
Delta
8.0
Very good
7,971 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,971 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,893 reviews
Delta
8.0
Very good
7,971 reviews

Overall

8.0

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    According to our current data, Icelandair ($431), Scandinavian Airlines ($469), and SWISS ($474) offers the cheapest pricing from Seattle to Oslo. Icelandair is 32% 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 $291. British Airways flights start at $356 while deals on American Airlines start at $383 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, November is the cheapest month in which you can book a flight from Seattle to Oslo (average of $567). Flying from Seattle to Oslo in June is currently the most expensive (average of $1,009). 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.

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 July 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$418Average$601FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$475Average$672FlexibilityNo cancel feeOn-time70%
FinnairCheapest$484Average$723FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$494Average$725FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$517Average$840FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$551Average$865FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$552Average$621FlexibilityNo cancel feeOn-time77%
DeltaCheapest$573Average$838FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$578Average$731FlexibilityNo cancel feeOn-time71%
KLMCheapest$584Average$790FlexibilityNo 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.