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Cheap flights from Seattle to Oslo from C$ 301

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
18 Mar — 25 Mar1
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 16 February 2026.

Mon 8/67:00 p.m.
SEA
-
OSL
1 stop11h 25m
Icelandair
Mon 15/64:30 p.m.
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 15/2C$ 600
Fri 5/67:00 p.m.
SEA
-
OSL
1 stop11h 25m
Icelandair
Sat 13/64:30 p.m.
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 15/2C$ 607
Tue 12/59:45 p.m.
SEA
-
OSL
1 stop13h 55m
Delta
Mon 25/56:30 a.m.
OSL
-
SEA
1 stop20h 09m
Delta
Deal found 12/2C$ 632
Thu 28/59:45 p.m.
SEA
-
OSL
1 stop13h 55m
Delta
Mon 8/66:30 a.m.
OSL
-
SEA
1 stop18h 54m
Delta
Deal found 15/2C$ 633
Tue 14/43:35 p.m.
SEA
-
OSL
2 stops20h 05m
Delta
Tue 21/46:30 a.m.
OSL
-
SEA
1 stop14h 15m
Delta
Deal found 13/2C$ 639
Thu 14/51:45 p.m.
SEA
-
OSL
1 stop13h 45m
KLM
Sat 23/58:00 a.m.
OSL
-
SEA
1 stop17h 30m
KLM
Deal found 12/2C$ 648
Mon 23/23:05 p.m.
SEA
-
OSL
1 stop32h 35m
Multiple Airlines
Mon 2/36:25 a.m.
OSL
-
SEA
1 stop15h 40m
Multiple Airlines
Deal found 14/2C$ 649
Tue 14/43:35 p.m.
SEA
-
OSL
2 stops20h 05m
Delta
Sat 9/59:20 a.m.
OSL
-
SEA
2 stops20h 30m
Delta
Deal found 12/2C$ 654
Sat 25/47:15 a.m.
SEA
-
OSL
2 stops18h 50m
Delta
Wed 20/56:30 a.m.
OSL
-
SEA
1 stop14h 12m
Delta
Deal found 13/2C$ 655
Mon 23/26:00 a.m.
SEA
-
OSL
2 stops17h 40m
Delta
Mon 2/36:25 a.m.
OSL
-
SEA
1 stop15h 40m
Delta
Deal found 14/2C$ 656

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 16 February 2026.

Round-trip from

C$ 600

One-way from

C$ 301

Popular in

June

Cheapest in

January

Average price

C$ 760
Icelandair
  • Icelandair
  • 9/6-16/6
  • 2 total stops
  • 24h 35m total
  • Seattle to Oslo
Search Deals
Icelandair
  • Icelandair
  • 29/4
  • 1 total stop
  • 11h 55m total
  • Seattle to Oslo
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 216 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 16 February 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

Tue 9/6

7:00 p.m.-3:25 p.m.

1 stop11h 25m

Oslo Gardermoen

Tue 16/6

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

1 stop13h 10m

C$ 600

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/6

7:00 p.m.-3:25 p.m.

1 stop11h 25m

Oslo Gardermoen

Mon 15/6

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

1 stop13h 10m

C$ 600

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 10/6

7:00 p.m.-3:25 p.m.

1 stop11h 25m

Oslo Gardermoen

Wed 17/6

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

1 stop13h 10m

C$ 607

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 14/4

3:35 p.m.-8:40 p.m.

2 stops20h 05m

Oslo Gardermoen

Tue 21/4

6:30 a.m.-11:45 a.m.

1 stop14h 15m

C$ 639

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 14/4

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

1 stop13h 55m

Oslo Gardermoen

Sat 9/5

9:20 a.m.-8:30 p.m.

2 stops20h 10m

C$ 647

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 28/5

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

1 stop13h 55m

Oslo Gardermoen

Mon 8/6

11:50 a.m.-10:05 p.m.

2 stops19h 15m

C$ 647

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 2/6

10:00 p.m.-8:40 p.m.

1 stop13h 40m

Oslo Gardermoen

Tue 9/6

9:20 a.m.-8:28 p.m.

2 stops20h 08m

C$ 647

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 25/4

1:45 p.m.-2:25 p.m.

1 stop15h 40m

Oslo Gardermoen

Wed 20/5

11:50 a.m.-4:30 p.m.

1 stop13h 40m

C$ 648

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 14/4

5:30 p.m.-4:20 p.m.

1 stop13h 50m

Oslo Gardermoen

Mon 11/5

11:50 a.m.-4:30 p.m.

1 stop13h 40m

C$ 648

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 4/5

7:00 p.m.-3:25 p.m.

1 stop11h 25m

C$ 312

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/2

Showing 1-10 of 20 results
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2

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 13 February 2026.

To ensure you get the cheapest price possible for a flight from Seattle to Oslo, you should look to book at least 87 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, April is the cheapest month in which you can book a flight from Seattle to Oslo (average of C$ 445). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 715). 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 16 February 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
1,455 reviews
Check prices

Food

7.3

Overall

7.7

Crew

8.4

Comfort

7.6

Boarding

7.8

Entertainment

7.1

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
1,455 reviews
KLM
7.7
Good
1,455 reviews
Check prices

Food

7.3

Overall

7.7

Crew

8.4

Comfort

7.6

Boarding

7.8

Entertainment

7.1

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
1,685 reviews
KLM
7.7
Good
1,455 reviews
Check prices

Food

7.3

Overall

7.7

Crew

8.4

Comfort

7.6

Boarding

7.8

Entertainment

7.1

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
614 reviews
KLM
7.7
Good
1,455 reviews
Check prices

Food

7.3

Overall

7.7

Crew

8.4

Comfort

7.6

Boarding

7.8

Entertainment

7.1

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
7,786 reviews
KLM
7.7
Good
1,455 reviews
Check prices

Food

7.3

Overall

7.7

Crew

8.4

Comfort

7.6

Boarding

7.8

Entertainment

7.1

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 Delta fly from Seattle to Oslo in about 11h 25m. The time it takes to get you to your destination can typically vary by up to 2h 30m. 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$ 571. Other airlines that can offer you cheap pricing are KLM, from C$ 586, and Lufthansa, from C$ 688. Icelandair is priced at 26% 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, April is the cheapest month in which you can book a flight from Seattle to Oslo (average of C$ 445). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 715). 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 16 February 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 571AverageC$ 668FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapestC$ 586AverageC$ 586FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapestC$ 688AverageC$ 873FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Scandinavian AirlinesCheapestC$ 701AverageC$ 753FlexibilityNo 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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