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Oslo

$264+ Cheap flights from Seattle (SEA) to Oslo

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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Sep 3 — Sep 101
Thu 9/3
Thu 9/10
1 adult, Economy
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Cheap flight deals from Seattle to Oslo

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 August 4, 2026.

This FlightHub deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:40 am
SEA
-
OSL
2 stops24h 00m
Multiple Airlines
Thu 11/196:15 am
OSL
-
SEA
1 stop14h 45m
Multiple Airlines
Deal found 7/30$492
This Mytrip deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/156:50 pm
SEA
-
OSL
1 stop18h 15m
Multiple Airlines
Tue 9/296:55 am
OSL
-
SEA
2 stops20h 37m
Multiple Airlines
Deal found 7/31$493
This FlightHub deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
Mon 8/241:50 pm
OSL
-
SEA
1 stop30h 55m
Icelandair
Deal found 7/30$494
This Mytrip deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
Wed 10/214:30 pm
OSL
-
SEA
1 stop34h 25m
Icelandair
Deal found 7/30$495
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:50 pm
SEA
-
OSL
1 stop14h 05m
United Airlines
Tue 8/256:55 am
OSL
-
SEA
2 stops20h 37m
United Airlines
Deal found 7/30$496
This Justfly.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:50 pm
SEA
-
OSL
1 stop18h 15m
Multiple Airlines
Thu 8/275:35 am
OSL
-
SEA
2 stops22h 32m
Multiple Airlines
Deal found 7/30$498
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/166:50 pm
SEA
-
OSL
1 stop18h 15m
United Airlines
Thu 8/277:10 am
OSL
-
SEA
1 stop18h 49m
United Airlines
Deal found 7/30$499
This Justfly.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/18:40 am
SEA
-
OSL
2 stops24h 00m
Multiple Airlines
Tue 11/106:25 pm
OSL
-
SEA
1 stop27h 35m
Multiple Airlines
Deal found 8/1$500
This oojo deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:40 pm
SEA
-
OSL
1 stop11h 55m
Icelandair
Thu 10/81:30 pm
OSL
-
SEA
1 stop16h 10m
Icelandair
Deal found 8/1$501
This oojo deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
Sun 10/114:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 8/1$502
This Gotogate deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:00 am
SEA
-
OSL
2 stops22h 15m
Multiple Airlines
Sat 10/176:45 pm
OSL
-
SEA
1 stop31h 14m
Multiple Airlines
Deal found 8/1$503
This Cheapflightsfares deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:55 pm
SEA
-
TRF
1 stop13h 35m
Scandinavian Airlines
Tue 9/296:00 am
TRF
-
SEA
1 stop16h 45m
Scandinavian Airlines
Deal found 7/30$525

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 August 4, 2026.

Round-trip from

$492
(FlightHub)

One-way from

$264
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$578
From Seattle/Tacoma Intl to Oslo
Search Deals
One-way flight from Seattle/Tacoma Intl to Oslo
Search Deals
High demand for flights, 5% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 2,558,603 searches. Data last updated August 4, 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

Sun 1/3

5:00 am-5:40 pm

2 stops27h 40m

Oslo Gardermoen

Sun 1/10

6:15 am-12:00 pm

1 stop14h 45m

$501

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 1/5

10:45 pm-5:10 pm

2 stops33h 25m

Oslo Gardermoen

Fri 4/2

11:45 am-4:59 pm

1 stop14h 14m

$507

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 1/5

10:45 pm-5:10 pm

2 stops33h 25m

Oslo Gardermoen

Sat 4/3

11:45 am-4:59 pm

1 stop14h 14m

$507
Quickest round-trip

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 8/16

6:50 pm-12:05 am

2 stops20h 15m

Oslo Gardermoen

Thu 8/20

11:45 am-4:59 pm

1 stop14h 14m

$524

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 9/9

7:11 am-12:15 am

2 stops32h 04m

Oslo Gardermoen

Sat 9/19

7:15 am-4:59 pm

1 stop18h 44m

$526

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 9/9

7:11 am-6:25 pm

2 stops26h 14m

Oslo Gardermoen

Tue 9/29

11:45 am-4:59 pm

1 stop14h 14m

$526

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 8/30

5:26 pm-5:15 pm

2 stops38h 49m

Oslo Gardermoen

Sun 9/6

7:10 am-11:04 pm

2 stops24h 54m

$534

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 8/27

8:10 am-6:15 pm

2 stops25h 05m

Oslo Gardermoen

Sat 9/12

6:15 am-8:18 pm

2 stops23h 03m

$543

SeattleOslo

SEA - TRF

SEATRF

Seattle/Tacoma Intl

Tue 9/15

3:55 pm-12:25 am

1 stop23h 30m

Oslo Sandefjord

Tue 9/22

6:00 am-1:45 pm

1 stop16h 45m

$553

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sat 1/2

1:50 pm-8:45 am

1 stop33h 55m

Oslo Gardermoen

Tue 3/30

11:45 am-4:59 pm

1 stop14h 14m

$587

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/1

Showing 1-10 of 38 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, January is the cheapest month in which you can book a flight from Seattle to Oslo (average of $422). Flying from Seattle to Oslo in December is currently the most expensive (average of $684). 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 $502 and $666 in August.
The cheapest round-trip price found within the last 5 days was $492 on Icelandair (Aug 18-Aug 24).

How far ahead should I book a flight from Seattle to Oslo?

The price you pay for your flight from Seattle to Oslo may vary depending on when you book. For the best chance of a lower fare, look to book 82 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 August 4, 2026.
See what other customers who have flown with KLM,Delta, andScandinavian Airlines from Seattle to Oslo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,552 reviews

Food

7.3

Entertainment

7.2

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
KLM
7.8
Good
1,552 reviews
KLM
7.8
Good
1,552 reviews

Food

7.3

Entertainment

7.2

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
Delta
7.8
Good
8,483 reviews
KLM
7.8
Good
1,552 reviews

Food

7.3

Entertainment

7.2

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
Scandinavian Airlines
7.4
Good
1,923 reviews
KLM
7.8
Good
1,552 reviews

Food

7.3

Entertainment

7.2

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
Icelandair
6.9
Okay
720 reviews
KLM
7.8
Good
1,552 reviews

Food

7.3

Entertainment

7.2

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.
Lufthansa
6.8
Okay
8,177 reviews
KLM
7.8
Good
1,552 reviews

Food

7.3

Entertainment

7.2

Crew

8.4

Boarding

7.8

Comfort

7.7

Overall

7.8

Reviews

1 / 20
4.0
Okay

Subhash,Jul 2026

CDG - ATL

The priority tag for bags were taken out. 1 bag is missing. Food was worst for AVML. The food was dry and burnt.

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) is the airport you will fly out of if you book a flight from Seattle to Oslo. You should not have trouble finding flights to Oslo from Seattle/Tacoma Intl; the airport handles an average of 0 outbound flights to Oslo per day. You should also have plenty of airline options to choose from since 7 airlines have flights from the Seattle airport to Oslo. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

  • How long is the flight from Seattle to Oslo?

    United Airlines and Scandinavian Airlines can get you from Seattle to Oslo in just under 23h 30m. Your travel time can differ by up to 4h 10m. The distance from Seattle to Oslo is about 4593 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, British Airways ($351), Icelandair ($393), and Scandinavian Airlines ($426) offers the cheapest pricing from Seattle to Oslo. British Airways is 37% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Oslo one-way?

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at $224. KLM flights start at $225 while deals on Delta start at $226 one-way.

  • 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 $422). Flying from Seattle to Oslo in December is currently the most expensive (average of $684). 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
Seattle to Stavanger flights
Seattle to Bodø flights
Portland to Stavanger flights

Top 7 airlines flying from Seattle to Oslo

Discover the top 7 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 2,558,603 searches. Data last updated August 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$351Average$545FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$393Average$548FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$426Average$643FlexibilityNo cancel feeOn-time77%
DeltaCheapest$468Average$686FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$491Average$545FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$493Average$684FlexibilityNo cancel feeOn-time76%
KLMCheapest$506Average$649FlexibilityNo cancel feeOn-time75%

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