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Oslo

$221+ 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Jul 8 — Jul 151
Wed 7/8
Wed 7/15
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 8, 2026.

This United Airlines deal was found by Cheapflights users on 6/5. 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 9/226:50 pm
SEA
-
OSL
1 stop18h 15m
United Airlines
Thu 10/17:10 am
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 6/5$512
This oojo deal was found by Cheapflights users on 6/7. 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.
Sat 9/193:40 pm
SEA
-
OSL
1 stop11h 55m
Icelandair
Sat 9/264:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 6/7$513
This oojo deal was found by Cheapflights users on 6/6. 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 9/811:25 pm
SEA
-
OSL
1 stop28h 10m
Icelandair
Sun 9/204:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 6/6$514
This United Airlines deal was found by Cheapflights users on 6/8. 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 9/13:54 pm
SEA
-
OSL
2 stops21h 11m
United Airlines
Mon 9/76:45 am
OSL
-
SEA
1 stop14h 10m
United Airlines
Deal found 6/8$515
This FlightHub deal was found by Cheapflights users on 6/7. 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 9/158:10 am
SEA
-
OSL
2 stops22h 05m
Austrian Airlines
Tue 9/2912:20 pm
OSL
-
SEA
2 stops41h 17m
Austrian Airlines
Deal found 6/7$516
This United Airlines deal was found by Cheapflights users on 6/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/110:45 pm
SEA
-
OSL
2 stops33h 25m
United Airlines
Tue 11/106:45 am
OSL
-
SEA
2 stops23h 20m
United Airlines
Deal found 6/4$517
This United Airlines deal was found by Cheapflights users on 6/7. 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 10/147:00 am
SEA
-
OSL
2 stops25h 15m
United Airlines
Sun 10/186:25 am
OSL
-
SEA
2 stops21h 07m
United Airlines
Deal found 6/7$518
This United Airlines deal was found by Cheapflights users on 6/8. 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 9/13:54 pm
SEA
-
OSL
2 stops21h 11m
United Airlines
Mon 9/146:45 am
OSL
-
SEA
2 stops25h 00m
United Airlines
Deal found 6/8$519
This United Airlines deal was found by Cheapflights users on 6/5. 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 stop18h 15m
United Airlines
Tue 9/296:55 am
OSL
-
SEA
2 stops20h 37m
United Airlines
Deal found 6/5$520
This KAYAK deal was found by Cheapflights users on 6/4. 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 KAYAK 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 11/106:15 am
OSL
-
SEA
2 stops21h 07m
Lufthansa
Deal found 6/4$521
This Air Canada deal was found by Cheapflights users on 6/7. 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.
Tue 9/88:00 am
SEA
-
OSL
2 stops22h 15m
Air Canada
Sun 9/206:25 am
OSL
-
SEA
2 stops25h 17m
Air Canada
Deal found 6/7$522
This Kiwi.com deal was found by Cheapflights users on 6/7. 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.
Sun 8/163:55 pm
SEA
-
TRF
1 stop13h 35m
Scandinavian Airlines
Tue 8/256:00 am
TRF
-
SEA
1 stop16h 45m
Scandinavian Airlines
Deal found 6/7$627

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 8, 2026.

Round-trip from

$512
(United Airlines)

One-way from

$221
(oojo)

Popular in

June

Cheapest in

January

Average price

$733
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. 13% potential increase in price ($84 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 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 8, 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 9/6

5:26 pm-5:15 pm

2 stops38h 49m

Oslo Gardermoen

Sat 9/19

6:45 am-11:36 pm

2 stops25h 51m

$528

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 8/29

5:13 pm-5:15 pm

2 stops39h 02m

Oslo Gardermoen

Wed 9/9

6:45 am-4:07 pm

2 stops18h 22m

$539

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 8/18

2:10 pm-6:05 pm

1 stop18h 55m

Oslo Gardermoen

Mon 8/31

6:45 am-7:08 pm

3 stops45h 23m

$548

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 8/4

5:45 pm-8:55 pm

1 stop18h 10m

Oslo Gardermoen

Thu 8/13

8:00 am-4:27 pm

1 stop17h 27m

$615

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 8/2

1:50 pm-6:35 pm

1 stop19h 45m

Oslo Gardermoen

Fri 8/21

6:30 am-4:27 pm

1 stop18h 57m

$616

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 7/10

1:45 pm-6:35 pm

1 stop19h 50m

Oslo Gardermoen

Sun 7/19

10:00 am-4:20 pm

1 stop15h 20m

$616

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 7/2

5:40 pm-8:55 pm

1 stop18h 15m

Oslo Gardermoen

Mon 7/13

11:00 am-4:20 pm

1 stop14h 20m

$628
Quickest round-trip

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 6/23

1:55 pm-12:30 pm

1 stop13h 35m

Oslo Gardermoen

Mon 6/29

11:00 am-4:24 pm

1 stop14h 24m

$628

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 9/1

6:50 pm-10:05 pm

1 stop18h 15m

Oslo Gardermoen

Thu 9/10

6:45 am-6:32 pm

2 stops20h 47m

$635

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 6/25

1:55 pm-6:35 pm

1 stop19h 40m

Oslo Gardermoen

Thu 7/9

11:50 am-11:02 pm

2 stops20h 12m

$638

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/5

Showing 1-10 of 39 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 $497). 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 8, 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
7.9
Good
8,395 reviews

Entertainment

7.8

Boarding

8.1

Comfort

7.8

Overall

7.9

Food

7.2

Crew

8.5

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
7.9
Good
8,395 reviews
Delta
7.9
Good
8,395 reviews

Entertainment

7.8

Boarding

8.1

Comfort

7.8

Overall

7.9

Food

7.2

Crew

8.5

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
1,812 reviews
Delta
7.9
Good
8,395 reviews

Entertainment

7.8

Boarding

8.1

Comfort

7.8

Overall

7.9

Food

7.2

Crew

8.5

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
670 reviews
Delta
7.9
Good
8,395 reviews

Entertainment

7.8

Boarding

8.1

Comfort

7.8

Overall

7.9

Food

7.2

Crew

8.5

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
8,048 reviews
Delta
7.9
Good
8,395 reviews

Entertainment

7.8

Boarding

8.1

Comfort

7.8

Overall

7.9

Food

7.2

Crew

8.5

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
8,031 reviews
Delta
7.9
Good
8,395 reviews

Entertainment

7.8

Boarding

8.1

Comfort

7.8

Overall

7.9

Food

7.2

Crew

8.5

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 and Scandinavian Airlines can get you from Seattle to Oslo in just under 13h 35m. Your travel time can differ by up to 25h 14m. The distance from Seattle to Oslo is about 4593 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 $192. 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 $497). 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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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 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$353Average$519FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$393Average$539FlexibilityNo cancel feeOn-time76%
DeltaCheapest$457Average$648FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$486Average$634FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$491Average$538FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$493Average$649FlexibilityNo cancel feeOn-time76%
KLMCheapest$498Average$625FlexibilityNo cancel feeOn-time75%

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