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Cheap flights from Seattle to Oslo from C$ 324

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
14 Feb — 21 Feb1
1 adult
1 adult, Economy, 0 bags

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 15 January 2026.

Round-trip from

C$ 598

One-way from

C$ 324

Popular in

June

Cheapest in

January

Average price

C$ 588
Icelandair
  • Icelandair
  • 12/4-8/5
  • 2 total stops
  • 25h 00m total
  • Seattle to Oslo
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Delta
  • Delta
  • 1/4
  • 1 total stop
  • 15h 15m total
  • Seattle to Oslo
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 230 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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Find flight deals from Seattle to Oslo

Enter your travel dates to find the best prices.

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 15 January 2026.

Sun 12/43:40 p.m.
SEA
-
OSL
1 stop11h 55m
Icelandair
Fri 8/51:50 p.m.
OSL
-
SEA
1 stop13h 05m
Icelandair
Deal found 13/1C$ 598
Fri 1/53:40 p.m.
SEA
-
OSL
1 stop11h 55m
Icelandair
Wed 6/51:50 p.m.
OSL
-
SEA
1 stop13h 05m
Icelandair
Deal found 14/1C$ 609
Tue 11/81:35 p.m.
SEA
-
OSL
1 stop17h 50m
British Airways
Fri 21/87:50 a.m.
OSL
-
SEA
1 stop19h 35m
British Airways
Deal found 14/1C$ 648
Tue 27/12:35 p.m.
SEA
-
OSL
1 stop12h 00m
Icelandair
Thu 5/21:10 p.m.
OSL
-
SEA
1 stop12h 50m
Icelandair
Deal found 13/1C$ 652
Sun 25/12:35 p.m.
SEA
-
OSL
1 stop12h 00m
Icelandair
Thu 5/21:10 p.m.
OSL
-
SEA
1 stop12h 50m
Icelandair
Deal found 13/1C$ 653
Sun 16/86:10 a.m.
SEA
-
OSL
2 stops25h 05m
British Airways
Mon 24/85:05 p.m.
OSL
-
SEA
1 stop27h 30m
British Airways
Deal found 14/1C$ 655
Sun 9/85:40 p.m.
SEA
-
OSL
1 stop17h 05m
Finnair
Mon 24/88:30 p.m.
OSL
-
SEA
2 stops31h 46m
Finnair
Deal found 13/1C$ 660
Tue 25/81:35 p.m.
SEA
-
OSL
1 stop17h 50m
British Airways
Fri 4/98:35 a.m.
OSL
-
SEA
1 stop16h 25m
British Airways
Deal found 14/1C$ 674
Sun 3/57:00 a.m.
SEA
-
OSL
2 stops27h 45m
Finnair
Mon 11/512:50 p.m.
OSL
-
SEA
2 stops31h 45m
Finnair
Deal found 15/1C$ 678
Wed 26/810:40 a.m.
SEA
-
OSL
2 stops23h 35m
British Airways
Fri 4/98:35 a.m.
OSL
-
SEA
1 stop16h 25m
British Airways
Deal found 14/1C$ 680
Sat 16/57:00 p.m.
SEA
-
OSL
1 stop11h 25m
Icelandair
Tue 26/54:30 p.m.
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 12/1C$ 687
Tue 25/81:35 p.m.
SEA
-
OSL
1 stop17h 50m
British Airways
Wed 2/98:35 a.m.
OSL
-
SEA
2 stops22h 03m
British Airways
Deal found 14/1C$ 688

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 629,999 searches. Data last updated 15 January 2026.
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

Sat 16/5

3:40 p.m.-12:35 p.m.

1 stop11h 55m

Oslo Gardermoen

Wed 27/5

4:30 p.m.-8:40 p.m.

1 stop13h 10m

C$ 687

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 5/5

1:29 p.m.-7:45 p.m.

2 stops21h 16m

Oslo Gardermoen

Wed 20/5

8:35 a.m.-10:26 p.m.

2 stops22h 51m

C$ 695

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 26/3

6:53 a.m.-4:35 p.m.

2 stops25h 42m

Oslo Gardermoen

Tue 7/4

8:35 a.m.-10:47 p.m.

2 stops23h 12m

C$ 702

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 26/3

6:53 a.m.-4:35 p.m.

2 stops25h 42m

Oslo Gardermoen

Mon 6/4

8:30 p.m.-7:32 p.m.

2 stops32h 02m

C$ 702

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 25/1

2:10 p.m.-4:20 p.m.

1 stop17h 10m

Oslo Gardermoen

Thu 19/2

12:40 p.m.-2:44 p.m.

2 stops35h 04m

C$ 707

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 27/1

7:10 a.m.-4:20 p.m.

2 stops24h 10m

Oslo Gardermoen

Tue 17/2

12:40 p.m.-3:10 p.m.

2 stops35h 30m

C$ 714

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 11/5

9:45 p.m.-8:40 p.m.

1 stop13h 55m

Oslo Gardermoen

Thu 28/5

6:30 a.m.-5:39 p.m.

1 stop20h 09m

C$ 717

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 11/5

9:45 p.m.-8:40 p.m.

1 stop13h 55m

Oslo Gardermoen

Fri 29/5

6:30 a.m.-5:39 p.m.

1 stop20h 09m

C$ 717

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 28/1

8:10 a.m.-5:10 p.m.

2 stops24h 00m

Oslo Gardermoen

Fri 20/2

6:10 a.m.-1:20 p.m.

1 stop16h 10m

C$ 723

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 1/3

11:59 p.m.-5:10 p.m.

2 stops32h 11m

Oslo Gardermoen

Sun 8/3

6:05 a.m.-9:16 p.m.

2 stops48h 11m

C$ 724

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/1

Showing 1-10 of 19 results
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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

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 9 January 2026.

To ensure you get the cheapest price possible for a flight from Seattle to Oslo, you should look to book at least 76 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 C$ 472). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 746). 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.

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 15 January 2026.
Read reviews from past customers who have flown KLM,Scandinavian Airlines, andIcelandair from Seattle to Oslo. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,440 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Crew

8.4

Overall

7.7

Food

7.2

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,440 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Crew

8.4

Overall

7.7

Food

7.2

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Scandinavian Airlines
7.3
Good
1,654 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Crew

8.4

Overall

7.7

Food

7.2

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Icelandair
7.1
Good
596 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Crew

8.4

Overall

7.7

Food

7.2

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Lufthansa
6.8
Okay
7,718 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Comfort

7.6

Crew

8.4

Overall

7.7

Food

7.2

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

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), located 18.4 km from the city centre, is the airport you fly out of when you book flights from Seattle to Oslo. 4 airlines have flights from Seattle/Tacoma Intl to Oslo on a regular basis. Booking flights from Seattle/Tacoma Intl to Oslo should not be difficult; the airport handles an average of 0 outbound flights to Oslo per day.

  • How long is the flight from Seattle to Oslo?

    Airlines like Icelandair and Finnair fly from Seattle to Oslo in about 11h 55m. The time it takes to get you to your destination can typically vary by up to 9h 21m. The distance from Seattle to Oslo is about 7324 km. This flight may include one or multiple stops.

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

    Cheapflights users have booked flights from Seattle to Oslo round-trip from C$ 582. Other airlines that can offer you cheap pricing are KLM, from C$ 598, and Scandinavian Airlines, from C$ 715. Icelandair is priced at 29% lower than the current average price of a flight leaving 3 months from now.

  • 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 C$ 472). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 746). 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

Top 4 airlines flying from Seattle to Oslo

Discover the top 4 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 629,999 searches. Data last updated 15 January 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 582AverageC$ 682FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapestC$ 598AverageC$ 599FlexibilityNo cancel feeOn-time75%
Search KLM flights
Scandinavian AirlinesCheapestC$ 715AverageC$ 769FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
LufthansaCheapestC$ 891AverageC$ 894FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Oslo?

Cheapflights helps you search for flights from Seattle to Oslo via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Oslo?

Millions of users choose and trust Cheapflights to book the best flight deals from Seattle to Oslo for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Seattle to Oslo with no change fees?

Yes, we can. To see specific flights from Seattle to Oslo with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Seattle to Oslo become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Oslo from Seattle today and book when prices fit your budget.

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