Seattle

$417+ Cheap flights from Oslo Gardermoen (OSL) 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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — SEA
Aug 25 — Sep 11
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Cheapflights Tip: The best prices from Oslo Gardermoen to Seattle/Tacoma Intl are usually found in October or November, booked 61 days in advance, depart on a Saturday or Friday and return on a Tuesday

Cheap flight deals from Oslo Gardermoen to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Oslo Gardermoen (OSL) 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 August 20, 2025.

Round-trip from

$443
(Flightnetwork)

One-way from

$417
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$622
From Oslo Gardermoen to Seattle/Tacoma Intl
One-way flight from Oslo Gardermoen to Seattle/Tacoma Intl
Highest demand for flights based on searches. 14% potential increase in price ($96 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Average for round-trip flights in August 2025

Find flight deals from Oslo Gardermoen to Seattle

Cheapest flights from Oslo Gardermoen to Seattle
Explore the most affordable flight options available from Oslo Gardermoen to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This Flightnetwork deal was found by Cheapflights users on 8/18. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/86:35 amOSL - SEA
2 stops21h 56mAir Canada
Wed 9/247:15 amSEA - OSL
2 stops23h 25mAir Canada
Deal found 8/18$443
This Travelis deal was found by Cheapflights users on 8/18. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/86:35 amOSL - SEA
1 stop14h 20mLufthansa
Wed 9/246:50 pmSEA - OSL
1 stop18h 20mLufthansa
Deal found 8/18$446
This Travelis deal was found by Cheapflights users on 8/19. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/28:35 amOSL - SEA
2 stops22h 23mMultiple Airlines
Wed 10/151:30 pmSEA - OSL
1 stop20h 45mMultiple Airlines
Deal found 8/19$449
This Delta deal was found by Cheapflights users on 8/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1011:50 amOSL - SEA
1 stop13h 15mDelta
Fri 10/241:30 pmSEA - OSL
2 stops20h 20mDelta
Deal found 8/18$456
This Finnair deal was found by Cheapflights users on 8/19. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/38:35 amOSL - SEA
2 stops19h 34mMultiple Airlines
Fri 10/101:30 pmSEA - OSL
1 stop24h 00mMultiple Airlines
Deal found 8/19$458
This Flysmarter deal was found by Cheapflights users on 8/20. 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.
Mon 9/18:00 amOSL - SEA
2 stops20h 15mBritish Airways
Wed 9/243:40 pmSEA - OSL
2 stops22h 50mBritish Airways
Deal found 8/20$464
This American Airlines deal was found by Cheapflights users on 8/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:45 amOSL - SEA
2 stops21h 24mAmerican Airlines
Wed 10/158:20 pmSEA - OSL
1 stop18h 10mAmerican Airlines
Deal found 8/19$467
This United Airlines deal was found by Cheapflights users on 8/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/86:35 amOSL - SEA
2 stops21h 01mUnited Airlines
Sun 9/1411:54 pmSEA - OSL
2 stops32h 21mUnited Airlines
Deal found 8/18$471
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Sat 10/46:35 amOSL - SEA
2 stops23h 09mUnited Airlines
Sat 10/111:12 pmSEA - OSL
2 stops43h 03mUnited Airlines
Deal found 8/20$474
This Finnair deal was found by Cheapflights users on 8/20. 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.
Sat 10/45:10 pmOSL - SEA
1 stop27h 20mMultiple Airlines
Sat 10/118:20 pmSEA - OSL
1 stop18h 15mMultiple Airlines
Deal found 8/20$483

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oslo Gardermoen 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 August 20, 2025.
Use the filters below to find and compare flights from Oslo Gardermoen Airport to Seattle that are best for you.

Fly from

Oslo Gardermoen

Fly to

Seattle

Route

Depart

Return

Price

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 9/8

6:35 am-7:31 pm

2 stops21h 56m

Seattle/Tacoma Intl

Wed 9/24

7:15 am-3:40 pm

2 stops23h 25m

$443

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 9/8

6:35 am-11:55 am

1 stop14h 20m

Seattle/Tacoma Intl

Wed 9/24

6:50 pm-10:10 pm

1 stop18h 20m

$446

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 10/3

8:35 am-7:09 pm

2 stops19h 34m

Seattle/Tacoma Intl

Fri 10/10

1:30 pm-10:30 pm

1 stop24h 00m

$446

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 10/2

8:35 am-9:58 pm

2 stops22h 23m

Seattle/Tacoma Intl

Wed 10/15

1:30 pm-7:15 pm

1 stop20h 45m

$449

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 10/10

11:50 am-4:05 pm

1 stop13h 15m

Seattle/Tacoma Intl

Fri 10/24

1:30 pm-6:50 pm

2 stops20h 20m

$456

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 9/1

8:00 am-7:15 pm

2 stops20h 15m

Seattle/Tacoma Intl

Wed 9/24

3:40 pm-11:30 pm

2 stops22h 50m

$464

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 10/2

7:45 am-8:09 pm

2 stops21h 24m

Seattle/Tacoma Intl

Wed 10/15

8:20 pm-11:30 pm

1 stop18h 10m

$467

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 10/3

7:50 am-9:23 pm

2 stops22h 33m

Seattle/Tacoma Intl

Fri 10/10

2:42 pm-10:30 pm

2 stops22h 48m

$467

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Thu 10/2

6:45 am-7:31 pm

2 stops21h 46m

Seattle/Tacoma Intl

Wed 10/15

7:30 am-2:10 pm

2 stops21h 40m

$467

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 10/10

7:50 am-9:46 pm

2 stops22h 56m

Seattle/Tacoma Intl

Fri 10/24

7:40 am-10:30 pm

2 stops29h 50m

$467

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 16 results
1
2

Best time to book a flight from Oslo Gardermoen to Seattle

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

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

Use this chart to determine the optimal time to book a round-trip flight from Oslo Gardermoen to Seattle. Price data was last updated on August 8, 2025.

Booking 61 days in advance of your planned departure date is, on average, the best time to get cheap flights from Oslo Gardermoen Airport to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Oslo Gardermoen Airport to Seattle?

Currently, January is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Seattle (average of $238). Flying from Oslo Gardermoen Airport to Seattle in June is currently the most expensive (average of $388). 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 Gardermoen 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 August 20, 2025.

It’s typically best to fly out from Oslo Gardermoen Airport 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.

How much does it cost to fly round-trip from Oslo Gardermoen Airport to Seattle?

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 August 20, 2025.
See what other customers who have flown with Delta, Scandinavian Airlines, and Icelandair from Oslo Gardermoen Airport to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
8.0
Very good
8.0
Very good

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
8.0
Very good

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
8.0
Very good

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
8.0
Very good

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
8.0
Very good

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Related info for your journey

Find useful and relevant information for your journey from Oslo Gardermoen 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 Gardermoen?

    Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Oslo Gardermoen to Seattle. You should not have trouble finding flights to Seattle/Tacoma Intl from Oslo Gardermoen; the airport handles an average of 0 inbound flights from Oslo Gardermoen per day. You should also have plenty of airline options to choose from since 6 airlines have flights to the Seattle airport from Oslo Gardermoen. It is only a 11.4 mi journey from Seattle/Tacoma Intl (SEA) to Seattle’s city center.

  • How long is the flight from Oslo Gardermoen Airport to Seattle?

    There are many flights that can get you from Oslo Gardermoen Airport to Seattle in 14h 20m. Fly via Air Canada or Lufthansa to get the fastest option. Airlines will cover a distance of 4551 mi. This flight may include one or multiple stops.

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

    Flying on Icelandair is currently your cheapest option to Seattle, with prices starting at $399. Additional round-trip tickets that might be worth considering are offered by American Airlines and British Airways, with the lowest prices starting at $416 and $419, respectively. Users have found that Icelandair is 31% cheaper than the other options available to this destination.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Seattle (average of $238). Flying from Oslo Gardermoen Airport to Seattle in June is currently the most expensive (average of $388). 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?

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Alternative routes for Oslo Gardermoen to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Oslo Gardermoen to Seattle

Discover the top 6 airlines that operate flights from Oslo Gardermoen 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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$399Average$501FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$416Average$490FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$419Average$600FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$423Average$558FlexibilityNo cancel feeOn-time76%
DeltaCheapest$452Average$525FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$603Average$703FlexibilityNo cancel feeOn-time77%

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