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Cheap flights from Seattle to Oslo from C$ 248

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 29/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
23 Mar — 30 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 21 February 2026.

Mon 24/89:55 p.m.
SEA
-
OSL
1 stop13h 45m
Delta
Tue 1/99:20 a.m.
OSL
-
SEA
1 stop16h 15m
Delta
Deal found 19/2C$ 635
Tue 18/89:55 p.m.
SEA
-
OSL
1 stop13h 45m
Delta
Sun 4/106:30 a.m.
OSL
-
SEA
1 stop13h 45m
Delta
Deal found 18/2C$ 636
Wed 27/57:15 a.m.
SEA
-
OSL
2 stops28h 25m
Delta
Wed 10/69:20 a.m.
OSL
-
SEA
1 stop35h 17m
Delta
Deal found 18/2C$ 642
Tue 14/49:45 p.m.
SEA
-
OSL
1 stop13h 55m
Delta
Tue 21/46:30 a.m.
OSL
-
SEA
2 stops20h 56m
Delta
Deal found 21/2C$ 649
Tue 18/89:55 p.m.
SEA
-
OSL
1 stop13h 45m
Delta
Tue 25/86:30 a.m.
OSL
-
SEA
2 stops21h 35m
Delta
Deal found 19/2C$ 650
Fri 29/51:45 p.m.
SEA
-
OSL
1 stop13h 45m
KLM
Mon 8/68:00 a.m.
OSL
-
SEA
1 stop17h 24m
KLM
Deal found 18/2C$ 652
Mon 23/23:05 p.m.
SEA
-
OSL
1 stop20h 55m
KLM
Thu 26/25:00 p.m.
OSL
-
SEA
1 stop27h 40m
KLM
Deal found 20/2C$ 654
Sun 19/44:36 p.m.
SEA
-
OSL
2 stops16h 59m
Delta
Sun 26/46:30 a.m.
OSL
-
SEA
1 stop14h 15m
Delta
Deal found 19/2C$ 657
Thu 26/27:10 a.m.
SEA
-
OSL
2 stops16h 30m
Multiple Airlines
Wed 4/36:25 a.m.
OSL
-
SEA
1 stop15h 40m
Multiple Airlines
Deal found 18/2C$ 658
Wed 25/27:10 a.m.
SEA
-
OSL
2 stops16h 30m
KLM
Mon 9/312:40 p.m.
OSL
-
SEA
1 stop31h 55m
KLM
Deal found 21/2C$ 660

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 21 February 2026.

Round-trip from

C$ 635

One-way from

C$ 248

Popular in

June

Cheapest in

January

Average price

C$ 764
Delta
  • Delta
  • 1/6-5/6
  • 2 total stops
  • 33h 40m total
  • Seattle to Oslo
Search Deals
Icelandair
  • Icelandair
  • 28/4
  • 1 total stop
  • 11h 55m total
  • Seattle to Oslo
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 218 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 46 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 21 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 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$ 642

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 14/4

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

2 stops20h 05m

Oslo Gardermoen

Sun 26/4

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

1 stop14h 15m

C$ 642

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 27/5

7:15 a.m.-8:40 p.m.

2 stops28h 25m

Oslo Gardermoen

Sat 6/6

11:50 a.m.-4:24 p.m.

1 stop13h 34m

C$ 642

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 28/5

5:40 p.m.-8:55 p.m.

1 stop18h 15m

Oslo Gardermoen

Mon 8/6

7:15 p.m.-11:37 a.m.

1 stop25h 22m

C$ 650

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 18/8

9:55 p.m.-8:40 p.m.

1 stop13h 45m

Oslo Gardermoen

Tue 25/8

6:30 a.m.-7:05 p.m.

2 stops21h 35m

C$ 650

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 18/8

9:55 p.m.-8:40 p.m.

1 stop13h 45m

Oslo Gardermoen

Mon 24/8

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

2 stops20h 08m

C$ 650

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 18/8

9:55 p.m.-8:40 p.m.

1 stop13h 45m

Oslo Gardermoen

Tue 1/9

6:30 a.m.-7:05 p.m.

2 stops21h 35m

C$ 650

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 28/5

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

1 stop13h 55m

Oslo Gardermoen

Tue 9/6

6:30 a.m.-10:16 p.m.

2 stops24h 46m

C$ 650

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 29/5

1:45 p.m.-1:40 p.m.

1 stop14h 55m

Oslo Gardermoen

Fri 5/6

6:30 a.m.-11:37 a.m.

1 stop14h 07m

C$ 652

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 29/4

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

1 stop11h 55m

C$ 248

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/2

Showing 1-10 of 19 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 20 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$ 448). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 719). 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?

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 21 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
1,457 reviews
Check prices

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.3

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.7
Good
1,457 reviews
KLM
7.7
Good
1,457 reviews
Check prices

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.3

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Scandinavian Airlines
7.3
Good
1,692 reviews
KLM
7.7
Good
1,457 reviews
Check prices

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.3

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Icelandair
7.1
Good
617 reviews
KLM
7.7
Good
1,457 reviews
Check prices

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.3

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Lufthansa
6.8
Okay
7,798 reviews
KLM
7.7
Good
1,457 reviews
Check prices

Boarding

7.8

Crew

8.4

Entertainment

7.1

Comfort

7.6

Food

7.3

Overall

7.7

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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 Delta fly from Seattle to Oslo in about 13h 45m. The time it takes to get you to your destination can typically vary by up to . The distance from Seattle to Oslo is about 7324 km.

  • 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$ 574. Other airlines that can offer you cheap pricing are KLM, from C$ 589, and Lufthansa, from C$ 692. 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$ 448). Flying from Seattle to Oslo in June is currently the most expensive (average of C$ 719). 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 21 February 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 574AverageC$ 665FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
KLMCheapestC$ 589AverageC$ 590FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapestC$ 692AverageC$ 878FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Scandinavian AirlinesCheapestC$ 704AverageC$ 757FlexibilityNo 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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