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Cheap flights from Seattle to Oslo from C$ 284

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 16/8. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
22 Jun — 29 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap 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 23 May 2026.

Sun 13/93:40 p.m.
SEA
-
OSL
1 stop14h 45m
Icelandair
Sat 3/101:50 p.m.
OSL
-
SEA
1 stop15h 50m
Icelandair
Deal found 21/5C$ 668
Sun 13/97:00 p.m.
SEA
-
OSL
1 stop11h 25m
Icelandair
Wed 30/94:30 p.m.
OSL
-
SEA
1 stop34h 25m
Icelandair
Deal found 21/5C$ 671
Sun 6/97:00 p.m.
SEA
-
OSL
1 stop11h 25m
Icelandair
Sat 26/94:30 p.m.
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 22/5C$ 678
Mon 7/97:00 p.m.
SEA
-
OSL
1 stop32h 35m
Icelandair
Sun 20/94:30 p.m.
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 22/5C$ 680
Mon 7/911:25 p.m.
SEA
-
OSL
1 stop31h 00m
Icelandair
Wed 23/94:30 p.m.
OSL
-
SEA
1 stop34h 25m
Icelandair
Deal found 22/5C$ 683
Fri 13/113:10 p.m.
SEA
-
OSL
1 stop17h 30m
United Airlines
Mon 16/116:15 a.m.
OSL
-
SEA
1 stop14h 55m
United Airlines
Deal found 19/5C$ 689
Thu 3/97:00 p.m.
SEA
-
OSL
1 stop11h 25m
Icelandair
Sun 20/94:30 p.m.
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 20/5C$ 691
Fri 4/911:25 p.m.
SEA
-
OSL
1 stop28h 10m
Icelandair
Sun 20/94:30 p.m.
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 20/5C$ 694
Fri 4/911:25 p.m.
SEA
-
OSL
1 stop28h 10m
Icelandair
Wed 23/94:30 p.m.
OSL
-
SEA
1 stop34h 25m
Icelandair
Deal found 20/5C$ 696
Wed 9/96:50 p.m.
SEA
-
OSL
1 stop18h 15m
United Airlines
Wed 23/96:35 a.m.
OSL
-
SEA
2 stops16h 47m
United Airlines
Deal found 22/5C$ 705

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 23 May 2026.

Round-trip from

C$ 668

One-way from

C$ 284

Popular in

June

Cheapest in

January

Average price

C$ 756
Icelandair
  • Icelandair
  • 13/9-3/10
  • 2 total stops
  • 30h 35m total
  • Seattle to Oslo
Search Deals
Icelandair
  • Icelandair
  • 16/8
  • 1 total stop
  • 11h 25m total
  • Seattle to Oslo
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 164 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 629,999 searches. Data last updated 23 May 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

Thu 6/8

11:25 p.m.-12:35 p.m.

1 stop28h 10m

Oslo Gardermoen

Tue 18/8

1:50 p.m.-11:45 a.m.

1 stop30h 55m

C$ 718

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 15/9

6:50 p.m.-10:05 p.m.

1 stop18h 15m

Oslo Gardermoen

Tue 29/9

6:55 a.m.-10:42 p.m.

2 stops24h 47m

C$ 719

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 1/11

2:05 p.m.-4:20 p.m.

1 stop17h 15m

Oslo Gardermoen

Tue 10/11

6:25 a.m.-6:30 p.m.

2 stops21h 05m

C$ 723

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 6/9

5:45 p.m.-6:35 p.m.

2 stops15h 50m

Oslo Gardermoen

Wed 16/9

6:30 a.m.-5:43 p.m.

1 stop20h 13m

C$ 731

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 6/9

11:04 p.m.-9:05 a.m.

2 stops25h 01m

Oslo Gardermoen

Mon 21/9

6:45 a.m.-11:55 a.m.

1 stop14h 10m

C$ 741

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 2/9

7:11 a.m.-3:55 p.m.

2 stops23h 44m

Oslo Gardermoen

Thu 10/9

6:45 a.m.-4:07 p.m.

2 stops18h 22m

C$ 748
Quickest round-trip

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 16/9

1:45 p.m.-4:20 p.m.

2 stops17h 35m

Oslo Gardermoen

Fri 25/9

6:30 a.m.-11:15 a.m.

1 stop13h 45m

C$ 845

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 6/8

10:52 a.m.-10:05 p.m.

2 stops26h 13m

Oslo Gardermoen

Thu 20/8

7:10 a.m.-4:59 p.m.

1 stop18h 49m

C$ 856

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 5/8

9:44 a.m.-6:35 p.m.

2 stops23h 51m

Oslo Gardermoen

Thu 20/8

6:30 a.m.-9:48 p.m.

2 stops24h 18m

C$ 865

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 4/9

6:50 p.m.-10:05 p.m.

1 stop18h 15m

Oslo Gardermoen

Tue 22/9

6:55 a.m.-6:32 p.m.

2 stops20h 37m

C$ 876

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/5

Showing 1-10 of 22 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 C$ 338). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 686). 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?

To ensure you get the cheapest price possible for a flight from Seattle to Oslo, you should look to book at least 81 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.

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 23 May 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
7.8
Good
1,519 reviews
Check prices

Boarding

7.8

Comfort

7.7

Entertainment

7.2

Overall

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,519 reviews
KLM
7.8
Good
1,519 reviews
Check prices

Boarding

7.8

Comfort

7.7

Entertainment

7.2

Overall

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Scandinavian Airlines
7.4
Good
1,784 reviews
KLM
7.8
Good
1,519 reviews
Check prices

Boarding

7.8

Comfort

7.7

Entertainment

7.2

Overall

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Icelandair
7.0
Good
657 reviews
KLM
7.8
Good
1,519 reviews
Check prices

Boarding

7.8

Comfort

7.7

Entertainment

7.2

Overall

7.8

Crew

8.4

Food

7.3

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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. 3 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, United Airlines, and Delta fly from Seattle to Oslo in about 15h 50m. The time it takes to get you to your destination can typically vary by up to 12h 20m. 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$ 578. Other airlines that can offer you cheap pricing are KLM, from C$ 594, and Scandinavian Airlines, from C$ 710. Icelandair is priced at 23% 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, September is the cheapest month in which you can book a flight from Seattle to Oslo (average of C$ 338). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 686). 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 3 airlines flying from Seattle to Oslo

Discover the top 3 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 23 May 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 578AverageC$ 652FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapestC$ 594AverageC$ 594FlexibilityNo cancel feeOn-time75%
Search KLM flights
Scandinavian AirlinesCheapestC$ 710AverageC$ 763FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines 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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