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$279+ Cheap flights from Oslo to Seattle (SEA)

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 3/18. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — SEA
Dec 4 — Dec 111
Thu 12/4
Thu 12/11
1 adult, Economy
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Cheapflights Tip: The best prices from Oslo to Seattle/Tacoma Intl are usually found in November or January, booked 61 days in advance, depart on a Saturday or Friday and return on a Tuesday

Cheap flight deals from Oslo to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Oslo (OS1) to Seattle (SEA). 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 November 4, 2025.

Round-trip from

$438
(Ticket)

One-way from

$279
(Travelis)

Popular in

July

Cheapest in

November

Average price

$469
From Oslo to Seattle/Tacoma Intl
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One-way flight from Oslo to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 15% potential increase in price ($104 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Oslo to Seattle

Cheapest flights from Oslo to Seattle
Explore the most affordable flight options available from Oslo to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 4, 2025.

This Ticket deal was found by Cheapflights users on 11/3. 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.
Sun 11/239:30 pmOSL - SEA
1 stop28h 30mIcelandair
Sat 12/62:35 pmSEA - OSL
1 stop21h 00mIcelandair
Deal found 11/3$438
This Travelis deal was found by Cheapflights users on 11/4. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/236:30 amOSL - SEA
1 stop14h 15mKLM
Sat 12/63:05 pmSEA - OSL
1 stop22h 25mKLM
Deal found 11/4$486
This Delta deal was found by Cheapflights users on 11/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/236:30 amOSL - SEA
1 stop14h 15mDelta
Sat 12/611:26 amSEA - OSL
2 stops19h 54mDelta
Deal found 11/3$500
This Travelis deal was found by Cheapflights users on 11/4. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/236:05 amOSL - SEA
2 stops22h 11mAir Canada
Sat 12/68:00 pmSEA - OSL
2 stops32h 05mAir Canada
Deal found 11/4$508
This American Airlines deal was found by Cheapflights users on 11/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/87:10 amOSL - SEA
2 stops24h 10mAmerican Airlines
Sun 1/256:50 pmSEA - OSL
1 stop18h 50mAmerican Airlines
Deal found 11/4$509
This Flysmarter deal was found by Cheapflights users on 11/4. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/236:05 amOSL - SEA
2 stops25h 01mMultiple Airlines
Sat 12/68:00 pmSEA - OSL
2 stops36h 40mMultiple Airlines
Deal found 11/4$535
This KLM deal was found by Cheapflights users on 11/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:00 pmOSL - SEA
1 stop25h 50mMultiple Airlines
Sun 1/182:10 pmSEA - OSL
1 stop24h 25mMultiple Airlines
Deal found 11/3$569
This Delta deal was found by Cheapflights users on 11/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/247:50 amOSL - SEA
1 stop16h 08mDelta
Sun 1/187:25 amSEA - OSL
2 stops19h 25mDelta
Deal found 11/3$581
This United Airlines deal was found by Cheapflights users on 11/3. 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 12/246:05 amOSL - SEA
2 stops36h 50mUnited Airlines
Sun 1/1812:40 pmSEA - OSL
3 stops44h 00mUnited Airlines
Deal found 11/3$595

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oslo to Seattle 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 November 4, 2025.
Use the filters below to find and compare flights from Oslo to Seattle that are best for you.

Fly from

Oslo

Fly to

Seattle

Route

Depart

Return

Price

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 4/9

1:50 pm-8:45 pm

1 stop15h 55m

Seattle/Tacoma Intl

Sat 4/25

7:00 pm-12:35 pm

1 stop32h 35m

$481

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 11/23

6:30 am-11:45 am

1 stop14h 15m

Seattle/Tacoma Intl

Sat 12/6

3:05 pm-10:30 pm

1 stop22h 25m

$486

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 11/23

6:30 am-11:45 am

1 stop14h 15m

Seattle/Tacoma Intl

Sat 12/6

11:26 am-4:20 pm

2 stops19h 54m

$500

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 4/9

6:35 am-12:20 pm

1 stop14h 45m

Seattle/Tacoma Intl

Sat 4/25

8:30 am-10:10 pm

2 stops28h 40m

$502

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 3/26

1:10 pm-6:00 pm

1 stop12h 50m

Seattle/Tacoma Intl

Mon 3/30

3:45 pm-12:35 pm

1 stop11h 50m

$505

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 3/26

6:25 pm-2:20 pm

1 stop27h 55m

Seattle/Tacoma Intl

Mon 3/30

10:10 am-6:00 pm

2 stops22h 50m

$516

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 11/23

6:05 am-10:06 pm

2 stops25h 01m

Seattle/Tacoma Intl

Sat 12/6

8:00 pm-5:40 pm

2 stops36h 40m

$535

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Wed 12/24

7:00 pm-11:50 am

1 stop25h 50m

Seattle/Tacoma Intl

Sun 1/18

2:10 pm-11:35 pm

1 stop24h 25m

$569

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Wed 12/24

7:50 am-8:45 pm

2 stops21h 55m

Seattle/Tacoma Intl

Sun 1/18

6:05 am-8:40 am

2 stops17h 35m

$592

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Thu 3/26

9:00 am-2:05 pm

2 stops37h 05m

Seattle/Tacoma Intl

Mon 3/30

2:05 pm-12:45 pm

2 stops37h 40m

$3,722

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 28 results
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Best time to book a flight from Oslo to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Oslo 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 Oslo to Seattle

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

Use this chart to determine the optimal time to book a round-trip flight from Oslo to Seattle. Price data was last updated on October 31, 2025.

The price you pay for your flight from Oslo to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 61 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 Oslo to Seattle?

Currently, February is the cheapest month in which you can book a flight from Oslo to Seattle (average of $359). Flying from Oslo to Seattle in July is currently the most expensive (average of $500). 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 OSL to SEA?

Find hourly flight availability from Oslo to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 4, 2025.

It’s typically best to fly out from Oslo to Seattle in the evening. Doing so could potentially save you 14% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated November 4, 2025.
Get a feel of what it's like to fly with Delta, Scandinavian Airlines, and Icelandair from Oslo to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,004 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,004 reviews
Delta
7.9
Good
8,004 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Scandinavian Airlines
7.4
Good
1,560 reviews
Delta
7.9
Good
8,004 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Icelandair
7.1
Good
571 reviews
Delta
7.9
Good
8,004 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Lufthansa
6.8
Okay
7,553 reviews
Delta
7.9
Good
8,004 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,496 reviews
Delta
7.9
Good
8,004 reviews

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Oslo to Seattle. 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 into for flights to Seattle from Oslo?

    If you book a flight to Seattle from Oslo, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 0 flights from Oslo to Seattle/Tacoma Intl per day from 5 different airlines.

  • How long is the flight from Oslo to Seattle?

    Airlines like Icelandair, KLM, and Delta fly from Oslo to Seattle in about 14h 15m. The time it takes to get you to your destination can typically vary by up to 1h 40m. There are 4551 mi between Oslo and Seattle. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Cheapflights users have booked flights from Oslo to Seattle round-trip from $362. Other airlines that can offer you cheap pricing are Icelandair, from $399, and Lufthansa, from $423. Users have found that British Airways is 36% cheaper than the other options available to this destination.

  • Can I find deals for flights from Oslo to Seattle that include hotel bookings?

    Yes. In addition to deals on Oslo to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Oslo to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oslo to Seattle.

  • Can I find deals for business class flights from Oslo to Seattle?

    Yes. Cheapflights offers flight deals from Oslo to Seattle 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 Oslo to Seattle?

    Currently, February is the cheapest month in which you can book a flight from Oslo to Seattle (average of $359). Flying from Oslo to Seattle in July is currently the most expensive (average of $500). 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

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Olympia
Ocean Shores
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Alternative routes for Oslo to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Oslo Gardermoen to Seattle flights
Sandefjord to Seattle flights
Oslo Gardermoen to Portland flights
Stavanger to Portland flights
Sandefjord to Portland flights

Top 5 airlines flying from Oslo to Seattle

Discover the top 5 airlines that operate flights from Oslo to Seattle. 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 November 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$362Average$600FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$399Average$607FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$423Average$532FlexibilityNo cancel feeOn-time76%
DeltaCheapest$452Average$525FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$603Average$703FlexibilityNo cancel feeOn-time77%

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