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$371+ 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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — SEA
fev 27 — mar 61
qui 2/27
qui 3/6
1 adult, Economy
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The best prices from Oslo to Seattle/Tacoma Intl are usually found in March or October, 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 fevereiro 22, 2025.

Round-trip from

$371
(Ticket)

Popular in

August

Cheapest in

March

Average price

$509
From Oslo to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($113 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 fevereiro 22, 2025.

This Ticket deal was found by Cheapflights users on 2/21. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 4/27:40 amOSL - SEA
1 stop19h 40mMultiple Airlines
qui 4/1011:20 amSEA - OSL
2 stops27h 35mMultiple Airlines
Deal found 2/21$371
This Travelis deal was found by Cheapflights users on 2/21. 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.
sex 4/254:30 pmOSL - SEA
1 stop13h 10mIcelandair
qua 4/307:00 pmSEA - OSL
1 stop32h 35mIcelandair
Deal found 2/21$383
This Ticket deal was found by Cheapflights users on 2/21. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 4/2511:45 amOSL - SEA
1 stop32h 50mBritish Airways
qua 4/306:58 amSEA - OSL
2 stops18h 42mBritish Airways
Deal found 2/21$389
This ResecentrumGruppen deal was found by Cheapflights users on 2/21. 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 ResecentrumGruppen is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 3/101:15 pmOSL - SEA
2 stops36h 40mFinnair
seg 3/247:50 pmSEA - OSL
2 stops28h 15mFinnair
Deal found 2/21$415
This Ticket deal was found by Cheapflights users on 2/21. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 3/316:30 amOSL - SEA
1 stop14h 15mKLM
dom 4/131:55 pmSEA - OSL
1 stop23h 40mKLM
Deal found 2/21$419
This American Airlines deal was found by Cheapflights users on 2/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 3/107:15 amOSL - SEA
2 stops21h 55mAmerican Airlines
seg 3/247:50 pmSEA - OSL
1 stop14h 45mAmerican Airlines
Deal found 2/21$433
This Delta deal was found by Cheapflights users on 2/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 3/106:30 amOSL - SEA
1 stop14h 10mDelta
seg 3/241:35 pmSEA - OSL
1 stop18h 50mDelta
Deal found 2/21$440
This United Airlines deal was found by Cheapflights users on 2/20. 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.
sex 4/47:15 amOSL - SEA
3 stops37h 34mUnited Airlines
sáb 4/1211:45 pmSEA - OSL
2 stops33h 20mUnited Airlines
Deal found 2/20$497
This Lufthansa deal was found by Cheapflights users on 2/21. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 3/106:15 pmOSL - SEA
2 stops28h 05mLufthansa
seg 3/243:00 pmSEA - OSL
2 stops18h 55mLufthansa
Deal found 2/21$517
This Sembo deal was found by Cheapflights users on 2/21. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 4/252:55 pmTRF - SEA
2 stops38h 08mAir France
qua 4/3011:24 amSEA - TRF
2 stops41h 56mAir France
Deal found 2/21$576
This Mytrip deal was found by Cheapflights users on 2/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 3/312:55 pmTRF - SEA
3 stops41h 57mMultiple Airlines
dom 4/133:45 pmSEA - TRF
2 stops18h 45mMultiple Airlines
Deal found 2/21$982
This Expedia deal was found by Cheapflights users on 2/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 7/67:20 pmTRF - SEA
1 stop27h 30mScandinavian Airlines
sex 12/197:20 amSEA - TRF
2 stops20h 30mScandinavian Airlines
Deal found 2/21$1,041

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 fevereiro 22, 2025.

Fly from

Oslo

Fly to

Seattle

Route

Depart

Return

Price

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

qua 4/2

7:40 am-6:20 pm

1 stop19h 40m

Seattle/Tacoma Intl

qui 4/10

11:20 am-11:55 pm

2 stops27h 35m

$371

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

sex 4/25

4:30 pm-8:40 pm

1 stop13h 10m

Seattle/Tacoma Intl

qua 4/30

7:00 pm-12:35 pm

1 stop32h 35m

$383

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

sex 4/25

11:45 am-11:35 am

1 stop32h 50m

Seattle/Tacoma Intl

qua 4/30

6:58 am-10:40 am

2 stops18h 42m

$389

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

seg 3/10

1:15 pm-5:55 pm

2 stops36h 40m

Seattle/Tacoma Intl

seg 3/24

7:50 pm-8:05 am

2 stops28h 15m

$415

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

seg 3/31

6:30 am-11:45 am

1 stop14h 15m

Seattle/Tacoma Intl

dom 4/13

1:55 pm-10:35 pm

1 stop23h 40m

$419

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

seg 3/10

7:15 am-9:10 pm

2 stops21h 55m

Seattle/Tacoma Intl

seg 3/24

7:50 pm-6:35 pm

1 stop14h 45m

$433

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

seg 3/10

6:30 am-12:40 pm

1 stop14h 10m

Seattle/Tacoma Intl

seg 3/24

1:35 pm-4:25 pm

1 stop18h 50m

$440

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

sex 4/25

6:35 am-1:59 pm

3 stops40h 24m

Seattle/Tacoma Intl

qua 4/30

3:35 pm-2:45 pm

2 stops38h 10m

$463

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

seg 3/10

6:15 pm-2:20 pm

2 stops28h 05m

Seattle/Tacoma Intl

seg 3/24

3:00 pm-5:55 pm

2 stops18h 55m

$517

OsloSeattle

TRF - SEA

TRFSEA

Oslo Sandefjord

sex 4/25

2:55 pm-8:03 pm

2 stops38h 08m

Seattle/Tacoma Intl

qua 4/30

11:24 am-2:20 pm

2 stops41h 56m

$576

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 28 results
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2
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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 February 14, 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 fevereiro 22, 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 fevereiro 22, 2025.
Delta
8.0
Very good
8,203 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Delta
8.0
Very good
8,203 reviews
Delta
8.0
Very good
8,203 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

KLM
7.8
Good
1,332 reviews
Delta
8.0
Very good
8,203 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Finnair
7.6
Good
1,271 reviews
Delta
8.0
Very good
8,203 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Cathay Pacific
7.5
Good
821 reviews
Delta
8.0
Very good
8,203 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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

Air France
7.4
Good
1,448 reviews
Delta
8.0
Very good
8,203 reviews

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

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 British Airways, from $389, and Finnair, from $415. Users have found that Icelandair 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 $396 on Finnair. Other airlines that offer cheap prices include Icelandair from $450 and Lufthansa from $487 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
Ocean Shores
Leavenworth
Olympia
Federal Way
Centralia
Marysville
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

Browse thousands of different options on Cheapflights for your next trip

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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
Oslo Gardermoen to Portland flights
Sandefjord to Seattle 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 fevereiro 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$382Average$567FlexibilityNo cancel feeOn-time76%
IcelandairCheapest$395Average$561FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$416Average$608FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$419Average$675FlexibilityNo cancel feeOn-time70%
DeltaCheapest$452Average$619FlexibilityNo cancel feeOn-timeN/A
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