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$369+ Cheap flights from Oslo to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — SEA
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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The best prices from Oslo to Seattle/Tacoma Intl are usually found in October or November, booked 59 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 January 21, 2025.

Round-trip from

$369
(Ticket)

Popular in

July

Cheapest in

October

Average price

$586
From Oslo to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($155 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in January 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 January 21, 2025.

This Ticket deal was found by Cheapflights users on 1/19. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/66:30 amOSL - SEA
1 stop14h 16mMultiple Airlines
Wed 2/1912:35 pmSEA - OSL
1 stop18h 50mMultiple Airlines
Deal found 1/19$369
This Ticket deal was found by Cheapflights users on 1/19. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/67:00 amOSL - SEA
2 stops23h 21mBritish Airways
Wed 2/1910:24 amSEA - OSL
2 stops27h 16mBritish Airways
Deal found 1/19$383
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/66:30 amOSL - SEA
1 stop14h 16mDelta
Wed 2/1912:35 pmSEA - OSL
1 stop18h 50mDelta
Deal found 1/20$412
This Travelis deal was found by Cheapflights users on 1/21. 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.
Fri 5/94:20 pmOSL - SEA
1 stop13h 20mIcelandair
Sat 5/313:45 pmSEA - OSL
1 stop11h 50mIcelandair
Deal found 1/21$419
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/67:00 amOSL - SEA
1 stop18h 55mAmerican Airlines
Wed 2/197:00 amSEA - OSL
2 stops18h 55mAmerican Airlines
Deal found 1/20$423
This Finnair deal was found by Cheapflights users on 1/20. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/148:30 pmOSL - SEA
2 stops35h 19mFinnair
Thu 4/2411:20 amSEA - OSL
2 stops27h 35mFinnair
Deal found 1/20$427
This United Airlines deal was found by Cheapflights users on 1/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1111:35 amOSL - SEA
2 stops41h 46mUnited Airlines
Mon 4/215:15 amSEA - OSL
2 stops31h 55mUnited Airlines
Deal found 1/20$452
This Flysmarter deal was found by Cheapflights users on 1/20. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/136:50 amOSL - SEA
2 stops16h 26mAir Canada
Wed 8/206:50 pmSEA - OSL
1 stop18h 20mAir Canada
Deal found 1/20$504
This Air France deal was found by Cheapflights users on 1/20. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/106:00 amOSL - SEA
1 stop20h 40mAir France
Mon 4/216:40 pmSEA - OSL
1 stop19h 40mAir France
Deal found 1/20$516
This Travelis deal was found by Cheapflights users on 1/20. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/137:15 amOSL - SEA
1 stop18h 44mLufthansa
Wed 8/206:50 pmSEA - OSL
1 stop18h 20mLufthansa
Deal found 1/20$542
This Travelis deal was found by Cheapflights users on 1/21. 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.
Thu 2/69:05 amTRF - SEA
2 stops35h 59mAir France
Wed 2/1912:35 pmSEA - TRF
2 stops39h 00mAir France
Deal found 1/21$621
This Gurufare deal was found by Cheapflights users on 1/20. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/61:05 pmTRF - SEA
2 stops42h 20mScandinavian Airlines
Wed 2/197:10 amSEA - TRF
2 stops20h 25mScandinavian Airlines
Deal found 1/20$709

Find flights from Oslo to Seattle within your budget

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 January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 2/6

6:30 am-11:46 am

1 stop14h 16m

Seattle/Tacoma Intl

Wed 2/19

12:35 pm-4:25 pm

1 stop18h 50m

$369

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 2/6

7:00 am-9:21 pm

2 stops23h 21m

Seattle/Tacoma Intl

Wed 2/19

10:24 am-10:40 pm

2 stops27h 16m

$383

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 2/6

6:30 am-11:46 am

1 stop14h 16m

Seattle/Tacoma Intl

Wed 2/19

12:35 pm-4:25 pm

1 stop18h 50m

$412

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 5/9

4:20 pm-8:40 pm

1 stop13h 20m

Seattle/Tacoma Intl

Sat 5/31

3:45 pm-12:35 pm

1 stop11h 50m

$419

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 2/6

7:00 am-4:55 pm

1 stop18h 55m

Seattle/Tacoma Intl

Wed 2/19

7:00 am-10:55 am

2 stops18h 55m

$423

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 4/14

8:30 pm-10:49 pm

2 stops35h 19m

Seattle/Tacoma Intl

Thu 4/24

11:20 am-11:55 pm

2 stops27h 35m

$427

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 4/11

11:35 am-8:21 pm

2 stops41h 46m

Seattle/Tacoma Intl

Mon 4/21

5:15 am-10:10 pm

2 stops31h 55m

$452

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 4/10

6:00 am-5:40 pm

1 stop20h 40m

Seattle/Tacoma Intl

Mon 4/21

6:40 pm-11:20 pm

1 stop19h 40m

$516

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 4/10

6:35 am-12:25 pm

1 stop14h 50m

Seattle/Tacoma Intl

Wed 4/23

6:50 pm-6:05 pm

1 stop14h 15m

$536

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

Thu 2/6

9:05 am-12:04 pm

2 stops35h 59m

Seattle/Tacoma Intl

Wed 2/19

12:35 pm-12:35 pm

2 stops39h 00m

$621

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 23 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.

Travel insights for flights from Oslo to Seattle

Get recent, data-driven insights about flights from Oslo to Seattle including ideal travel times, pricing trends, and more.

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 January 17, 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 59 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, January is the cheapest month in which you can book a flight from Oslo to Seattle (average of $238). Flying from Oslo to Seattle in July is currently the most expensive (average of $411). 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 January 21, 2025.

It’s typically best to fly out from Oslo to Seattle at noon. Doing so could potentially save you 20% on the flight price compared to flying in the morning, which is usually more expensive.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 January 21, 2025.
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.6
Good
1,286 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.5
Good
1,600 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France
7.4
Good
1,490 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.6

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    Cheapflights users have booked flights from Oslo to Seattle round-trip from $383. Other airlines that can offer you cheap pricing are Delta, from $412, and Icelandair, from $419. Users have found that British Airways is 32% cheaper than the other options available to this destination.

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

    One-way options have recently been found by users for as low as $388 on Icelandair. Other airlines that offer cheap prices include SWISS from $451 and Finnair from $498 one-way.

  • 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, January is the cheapest month in which you can book a flight from Oslo to Seattle (average of $238). Flying from Oslo to Seattle in July is currently the most expensive (average of $411). 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 Oslo?

Book flights to Oslo if you plan to visit one of these locations
SeaTac
Tukwila
Renton
Tacoma
Lacey
Federal Way
Ocean Shores
Leavenworth
Olympia
Marysville
Centralia
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

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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
Sandefjord to Portland flights
Stavanger 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 January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$382Average$558FlexibilityNo cancel feeOn-time76%
IcelandairCheapest$415Average$565FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$416Average$585FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$419Average$672FlexibilityNo cancel feeOn-time70%
DeltaCheapest$522Average$683FlexibilityNo cancel feeOn-timeN/A
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