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Cheap flights from Seattle to Oslo from C$ 459

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 15/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
26 Aug — 2 Sep1
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 27 July 2026.

Sun 16/86:50 p.m.
SEA
-
OSL
1 stop18h 15m
United Airlines
Wed 26/87:10 a.m.
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 23/7C$ 695
Sun 16/86:50 p.m.
SEA
-
OSL
1 stop18h 15m
United Airlines
Tue 25/86:55 a.m.
OSL
-
SEA
1 stop14h 00m
United Airlines
Deal found 23/7C$ 706
Thu 22/106:50 p.m.
SEA
-
OSL
1 stop18h 15m
United Airlines
Sun 1/116:15 a.m.
OSL
-
SEA
1 stop14h 45m
United Airlines
Deal found 26/7C$ 707
Sun 16/86:50 p.m.
SEA
-
OSL
1 stop18h 15m
United Airlines
Thu 27/87:10 a.m.
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 22/7C$ 710
Sun 11/106:50 p.m.
SEA
-
OSL
1 stop18h 15m
United Airlines
Thu 15/107:10 a.m.
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 26/7C$ 712
Sun 1/1111:16 p.m.
SEA
-
OSL
2 stops26h 44m
United Airlines
Sun 8/116:15 a.m.
OSL
-
SEA
1 stop14h 45m
United Airlines
Deal found 22/7C$ 713
Wed 9/95:00 a.m.
SEA
-
OSL
2 stops32h 05m
United Airlines
Tue 29/97:10 a.m.
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 23/7C$ 717
Tue 10/117:00 a.m.
SEA
-
OSL
2 stops25h 10m
United Airlines
Thu 19/116:15 a.m.
OSL
-
SEA
1 stop14h 45m
United Airlines
Deal found 27/7C$ 719
Sun 11/1010:48 p.m.
SEA
-
OSL
2 stops33h 27m
United Airlines
Sat 17/107:15 a.m.
OSL
-
SEA
1 stop18h 44m
United Airlines
Deal found 27/7C$ 723
Sun 1/1111:15 p.m.
SEA
-
OSL
2 stops32h 55m
United Airlines
Tue 10/116:45 a.m.
OSL
-
SEA
2 stops23h 54m
United Airlines
Deal found 24/7C$ 724

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 27 July 2026.

Round-trip from

C$ 695

One-way from

C$ 459

Popular in

December

Cheapest in

January

Average price

C$ 923
United Airlines
  • United Airlines
  • 16/8-26/8
  • 2 total stops
  • 37h 04m total
  • Seattle to Oslo
Search Deals
Delta
  • Delta
  • 16/11
  • 2 total stops
  • 28h 15m total
  • Seattle to Oslo
Search Deals
High demand for flights, 5% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 27 July 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 14/1

12:15 p.m.-5:40 p.m.

2 stops20h 25m

Oslo Gardermoen

Tue 19/1

6:45 a.m.-9:56 p.m.

3 stops24h 11m

C$ 720

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 1/11

7:00 a.m.-5:10 p.m.

2 stops25h 10m

Oslo Gardermoen

Tue 10/11

6:45 a.m.-9:21 p.m.

2 stops23h 36m

C$ 724

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 15/10

5:00 a.m.-10:05 p.m.

2 stops32h 05m

Oslo Gardermoen

Thu 29/10

6:15 a.m.-1:00 p.m.

1 stop14h 45m

C$ 728

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 9/9

5:00 a.m.-10:05 p.m.

2 stops32h 05m

Oslo Gardermoen

Tue 29/9

6:45 a.m.-6:19 p.m.

2 stops20h 34m

C$ 736

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 2/9

7:00 a.m.-5:15 p.m.

2 stops25h 15m

Oslo Gardermoen

Wed 9/9

7:10 a.m.-9:51 p.m.

2 stops23h 41m

C$ 737

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 18/11

2:50 p.m.-5:40 p.m.

1 stop17h 50m

Oslo Gardermoen

Fri 27/11

1:55 p.m.-12:00 p.m.

1 stop31h 05m

C$ 750
Quickest round-trip

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 19/8

3:54 p.m.-10:05 p.m.

2 stops21h 11m

Oslo Gardermoen

Sun 20/12

6:15 a.m.-12:00 p.m.

1 stop14h 45m

C$ 874

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 16/8

9:40 a.m.-4:20 p.m.

2 stops21h 40m

Oslo Gardermoen

Mon 24/8

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

2 stops21h 15m

C$ 917

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 17/11

4:05 p.m.-4:10 p.m.

1 stop15h 05m

Oslo Gardermoen

Sun 29/11

7:50 a.m.-11:47 a.m.

2 stops36h 57m

C$ 940
Cheapest one-way

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 16/11

5:35 a.m.-6:50 p.m.

2 stops28h 15m

C$ 459

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/7

Showing 1-10 of 18 resultsSorted by cheapest first
1
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

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$ 595). Flying from Seattle to Oslo in December is currently the most expensive (average of C$ 964). 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?

Airfare is below average for this route at the moment.
Seattle to Oslo flights typically cost between C$ 707 and C$ 938 in August.
The cheapest round-trip price found within the last 5 days was C$ 695 on United Airlines (16 Aug-26 Aug).

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 82 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 27 July 2026.
Read reviews from past customers who have flown Icelandair and Lufthansa 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.
Icelandair
7.0
Good
715 reviews
Check prices

Crew

8.0

Boarding

7.2

Overall

7.0

Comfort

6.9

Entertainment

6.9

Food

6.1

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.
Icelandair
7.0
Good
715 reviews
Icelandair
7.0
Good
715 reviews
Check prices

Crew

8.0

Boarding

7.2

Overall

7.0

Comfort

6.9

Entertainment

6.9

Food

6.1

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.
Lufthansa
6.8
Okay
8,161 reviews
Icelandair
7.0
Good
715 reviews
Check prices

Crew

8.0

Boarding

7.2

Overall

7.0

Comfort

6.9

Entertainment

6.9

Food

6.1

Reviews

1 / 20
6.0
Good

William,Jun 2026

SEA - KEF

First time Iceland Air. Ridiculously small amount of leg room, flight was hotter than hades and people kept requesting for cooler air that never came. You pay for everything, no food of any kind unless you pay which I've never seen on a flight of this length. Just seemed like they are cheap as possible about everything. Won't fly with them again if I can avoid it.

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. 2 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 United Airlines fly from Seattle to Oslo in about 20h 25m. 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$ 591. Another airline that can offer you cheap pricing is Lufthansa. Icelandair is priced at 24% 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$ 595). Flying from Seattle to Oslo in December is currently the most expensive (average of C$ 964). 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

Top 2 airlines flying from Seattle to Oslo

Discover the top 2 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 27 July 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapestC$ 591AverageC$ 691FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapestC$ 687AverageC$ 708FlexibilityNo 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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