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$295+ 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 11/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Nov 19 — Nov 261
Wed 11/19
Wed 11/26
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Oslo are usually found in January or November, booked 76 days in advance, depart on a Tuesday or Monday and return on a Saturday

Find 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 October 20, 2025.

This Sembo deal was found by Cheapflights users on 10/20. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/242:35 pmSEA - OSL
1 stop12h 00mIcelandair
Tue 12/91:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 10/20$386
This FlightHub deal was found by Cheapflights users on 10/18. 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.
Thu 11/272:35 pmSEA - OSL
1 stop12h 00mIcelandair
Thu 12/41:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 10/18$396
This KAYAK deal was found by Cheapflights users on 10/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/252:35 pmSEA - OSL
1 stop12h 00mIcelandair
Thu 12/41:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 10/18$419
This FlightHub deal was found by Cheapflights users on 10/19. 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.
Wed 12/312:35 pmSEA - OSL
1 stop12h 00mIcelandair
Sat 1/101:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 10/19$434
This SmartFares deal was found by Cheapflights users on 10/18. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/162:35 pmSEA - OSL
1 stop12h 00mIcelandair
Sun 11/239:30 pmOSL - SEA
1 stop28h 30mIcelandair
Deal found 10/18$436
This FlightHub deal was found by Cheapflights users on 10/19. 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.
Wed 12/312:35 pmSEA - OSL
1 stop21h 00mIcelandair
Fri 1/91:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 10/19$447
This FlightHub deal was found by Cheapflights users on 10/19. 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.
Wed 12/312:35 pmSEA - OSL
1 stop12h 00mIcelandair
Thu 1/81:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 10/19$452
This Icelandair deal was found by Cheapflights users on 10/18. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/302:35 pmSEA - OSL
1 stop12h 00mIcelandair
Thu 12/41:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 10/18$456
This Ticket deal was found by Cheapflights users on 10/20. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/243:37 pmSEA - OSL
2 stops35h 33mMultiple Airlines
Tue 12/96:15 amOSL - SEA
1 stop14h 55mMultiple Airlines
Deal found 10/20$463
This FlightHub deal was found by Cheapflights users on 10/18. 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.
Thu 11/272:35 pmSEA - OSL
1 stop12h 00mIcelandair
Fri 12/51:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 10/18$465
This FlightHub deal was found by Cheapflights users on 10/18. 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.
Mon 12/292:35 pmSEA - OSL
1 stop12h 00mIcelandair
Tue 1/131:10 pmOSL - SEA
1 stop12h 50mIcelandair
Deal found 10/18$466
This Mytrip deal was found by Cheapflights users on 10/19. 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.
Sun 12/142:35 pmSEA - TRF
2 stops20h 10mMultiple Airlines
Sun 1/44:40 pmTRF - SEA
3 stops33h 20mMultiple Airlines
Deal found 10/19$1,280

Cheap 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 October 20, 2025.

Round-trip from

$362
(Ticket)

One-way from

$295
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$487
From Seattle/Tacoma Intl to Oslo
Search Deals
One-way flight from Seattle/Tacoma Intl to Oslo
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($145 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 October 20, 2025.
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

Sat 4/4

7:00 pm-3:25 pm

1 stop11h 25m

Oslo Gardermoen

Sun 4/12

4:30 pm-8:45 pm

1 stop13h 15m

$420

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 3/2

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Sat 3/14

1:10 pm-6:00 pm

1 stop12h 50m

$420

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 4/6

3:45 pm-12:35 pm

1 stop11h 50m

Oslo Gardermoen

Sun 4/12

1:50 pm-8:45 pm

1 stop15h 55m

$420

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 4/5

3:45 pm-12:35 pm

1 stop11h 50m

Oslo Gardermoen

Sun 4/12

1:50 pm-5:50 pm

1 stop13h 00m

$434

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 3/4

2:35 pm-11:35 am

1 stop12h 00m

Oslo Gardermoen

Tue 3/17

1:10 pm-6:00 pm

1 stop12h 50m

$457

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Wed 11/26

2:05 pm-9:30 pm

1 stop22h 25m

Oslo Gardermoen

Mon 12/8

9:25 am-11:50 am

1 stop35h 25m

$508

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 1/22

10:55 am-2:15 pm

2 stops18h 20m

Oslo Gardermoen

Mon 1/26

8:00 am-6:56 pm

2 stops19h 56m

$509

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 11/25

1:40 pm-4:20 pm

1 stop17h 40m

Oslo Gardermoen

Mon 12/8

9:25 am-11:50 am

1 stop35h 25m

$509

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 3/10

1:40 pm-2:15 pm

2 stops16h 35m

Oslo Gardermoen

Tue 3/24

10:25 am-10:16 pm

2 stops19h 51m

$509

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 3/3

4:45 pm-6:50 pm

1 stop17h 05m

Oslo Gardermoen

Tue 3/17

9:25 am-10:00 pm

2 stops20h 35m

$512

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

Showing 1-10 of 33 results
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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

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 October 17, 2025.

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 76 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 $340). Flying from Seattle to Oslo in June is currently the most expensive (average of $537). 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.

What is the cheapest time of day to fly from SEA to OSL?

Find hourly flight availability from Seattle to Oslo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 20, 2025.

It’s optimal to fly from Seattle to Oslo in the evening. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Seattle to Oslo?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Oslo. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seattle to Oslo flight should consider departing on Saturday mornings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 20, 2025.
See what other customers who have flown with Delta, Scandinavian Airlines, and Icelandair 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.
Delta
7.9
Good
7,978 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,978 reviews
Delta
7.9
Good
7,978 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Scandinavian Airlines
7.4
Good
1,533 reviews
Delta
7.9
Good
7,978 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Icelandair
7.0
Good
561 reviews
Delta
7.9
Good
7,978 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Lufthansa
6.8
Okay
7,508 reviews
Delta
7.9
Good
7,978 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
British Airways
6.7
Okay
7,461 reviews
Delta
7.9
Good
7,978 reviews

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

7.9

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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 10 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?

    Icelandair can get you from Seattle to Oslo in just under 11h 25m. Your travel time can differ by up to . The distance from Seattle to Oslo is about 4551 mi.

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

    According to our current data, Icelandair ($404), British Airways ($422), and Delta ($468) offers the cheapest pricing from Seattle to Oslo. Icelandair is 32% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 $340). Flying from Seattle to Oslo in June is currently the most expensive (average of $537). 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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Top 10 airlines flying from Seattle to Oslo

Discover the top 10 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 October 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$404Average$556FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$422Average$628FlexibilityNo cancel feeOn-time70%
DeltaCheapest$468Average$744FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$491Average$767FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$494Average$719FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$517Average$840FlexibilityNo cancel feeOn-time69%
KLMCheapest$524Average$765FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$551Average$773FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$552Average$590FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$578Average$673FlexibilityNo cancel feeOn-time71%

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