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Oslo Gardermoen

$211+ Cheap flights from Washington to Oslo Gardermoen (OSL)

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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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Cheap flight deals from Washington to Oslo Gardermoen

Keep the following information in mind while searching for Washington to Oslo Gardermoen flight deals. Data was last updated January 14, 2026.

Round-trip from

$395
(oojo)

One-way from

$211
(oojo)

Popular in

June

Cheapest in

January

Average price

$423
From Washington to Oslo Gardermoen
Search Deals
One-way flight from Washington to Oslo Gardermoen
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Highest demand for flights based on searches. 16% potential increase in price ($119 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($23 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Washington to Oslo Gardermoen

Cheapest flights from Washington to Oslo Gardermoen
Explore the most affordable flight options available from Washington to Oslo Gardermoen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 14, 2026.

This oojo deal was found by Cheapflights users on 1/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/93:45 pm
PDX
-
OSL
1 stop11h 50m
Icelandair
Mon 3/161:10 pm
OSL
-
PDX
1 stop12h 50m
Icelandair
Deal found 1/12$395
This oojo deal was found by Cheapflights users on 1/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/42:35 pm
SEA
-
OSL
1 stop12h 00m
Icelandair
Wed 2/111:10 pm
OSL
-
SEA
1 stop12h 50m
Icelandair
Deal found 1/14$395
This oojo deal was found by Cheapflights users on 1/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/222:35 pm
SEA
-
OSL
1 stop12h 00m
Icelandair
Mon 2/91:10 pm
OSL
-
SEA
1 stop12h 50m
Icelandair
Deal found 1/12$396
This oojo deal was found by Cheapflights users on 1/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/302:35 pm
SEA
-
OSL
1 stop12h 00m
Icelandair
Sun 2/159:30 pm
OSL
-
SEA
1 stop28h 30m
Icelandair
Deal found 1/14$397
This FlightHub deal was found by Cheapflights users on 1/12. 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 1/222:35 pm
SEA
-
OSL
1 stop12h 00m
Icelandair
Sun 2/89:30 pm
OSL
-
SEA
1 stop28h 30m
Icelandair
Deal found 1/12$402
This oojo deal was found by Cheapflights users on 1/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/137:00 pm
SEA
-
OSL
1 stop11h 25m
Icelandair
Fri 5/81:50 pm
OSL
-
SEA
1 stop13h 05m
Icelandair
Deal found 1/13$403
This FlightHub deal was found by Cheapflights users on 1/13. 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.
Tue 4/143:40 pm
SEA
-
OSL
1 stop11h 55m
Icelandair
Thu 5/71:50 pm
OSL
-
SEA
1 stop13h 05m
Icelandair
Deal found 1/13$407
This oojo deal was found by Cheapflights users on 1/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/37:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
Tue 5/124:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 1/13$412
This Expedia deal was found by Cheapflights users on 1/11. 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.
Sat 3/72:45 pm
PDX
-
OSL
1 stop20h 50m
Icelandair
Mon 3/161:10 pm
OSL
-
PDX
1 stop12h 50m
Icelandair
Deal found 1/11$422
This Kiwi.com deal was found by Cheapflights users on 1/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/202:35 pm
SEA
-
OSL
1 stop12h 00m
Icelandair
Mon 2/91:10 pm
OSL
-
SEA
1 stop12h 50m
Icelandair
Deal found 1/12$422
This KAYAK deal was found by Cheapflights users on 1/13. 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 1/272:35 pm
SEA
-
OSL
1 stop12h 00m
Icelandair
Sun 2/159:30 pm
OSL
-
SEA
1 stop28h 30m
Icelandair
Deal found 1/13$423
This KAYAK deal was found by Cheapflights users on 1/12. 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.
Sun 1/252:35 pm
SEA
-
OSL
1 stop12h 00m
Icelandair
Sun 2/89:30 pm
OSL
-
SEA
1 stop28h 30m
Icelandair
Deal found 1/12$424

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Oslo Gardermoen 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 14, 2026.
Use the filters below to find and compare flights from Washington to Oslo Gardermoen Airport that are best for you.

Fly from

Washington

Fly to

Oslo Gardermoen

Route

Depart

Return

Price

PortlandOslo

PDX - OSL

PDXOSL

Portland

Mon 3/9

11:46 am-10:40 pm

2 stops26h 54m

Oslo Gardermoen

Mon 3/16

2:40 pm-12:20 am

2 stops41h 40m

$451

PortlandOslo

PDX - OSL

PDXOSL

Portland

Wed 3/4

5:45 pm-10:40 pm

1 stop19h 55m

Oslo Gardermoen

Mon 3/9

2:40 pm-12:20 am

2 stops41h 40m

$454

PortlandOslo

PDX - OSL

PDXOSL

Portland

Tue 2/10

2:13 pm-10:55 am

2 stops35h 42m

Oslo Gardermoen

Tue 2/17

7:25 pm-3:55 pm

1 stop29h 30m

$460

PortlandOslo

PDX - OSL

PDXOSL

Portland

Mon 3/9

1:52 pm-10:40 pm

2 stops24h 48m

Oslo Gardermoen

Tue 3/17

11:45 am-12:20 am

2 stops20h 35m

$464

PortlandOslo

PDX - OSL

PDXOSL

Portland

Wed 2/18

5:45 pm-7:30 am

2 stops28h 45m

Oslo Gardermoen

Fri 2/27

8:15 am-11:16 pm

2 stops24h 01m

$472

PortlandOslo

PDX - OSL

PDXOSL

Portland

Mon 3/9

6:45 pm-8:00 am

2 stops29h 15m

Oslo Gardermoen

Mon 3/16

8:50 pm-11:09 pm

2 stops34h 19m

$472

PortlandOslo

PDX - OSL

PDXOSL

Portland

Thu 2/26

11:48 am-11:35 pm

2 stops26h 47m

Oslo Gardermoen

Thu 3/5

3:05 pm-3:55 pm

1 stop33h 50m

$485

PortlandOslo

PDX - OSL

PDXOSL

Portland

Sun 3/1

5:45 pm-10:55 am

1 stop32h 10m

Oslo Gardermoen

Mon 3/9

7:20 am-4:55 pm

1 stop17h 35m

$488

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 1/25

2:10 pm-4:20 pm

1 stop17h 10m

Oslo Gardermoen

Fri 2/6

6:25 am-1:20 pm

1 stop15h 55m

$498

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 1/25

2:10 pm-4:20 pm

1 stop17h 10m

Oslo Gardermoen

Tue 2/10

6:25 am-11:25 am

1 stop14h 00m

$498

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 45 results
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Best time to book a flight from Washington to Oslo Gardermoen

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

What is the cheapest month to book a flight from State of Washington to Oslo Gardermoen Airport?

Currently, January is the cheapest month in which you can book a flight from State of Washington to Oslo Gardermoen Airport (average of $340). Flying from State of Washington to Oslo Gardermoen Airport 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.

How much does it cost to fly round-trip from State of Washington to Oslo Gardermoen Airport?

Related info for your journey

Find useful and relevant information for your journey from Washington to Oslo Gardermoen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from State of Washington to Oslo Gardermoen Airport?

    Departing from State of Washington to Oslo Gardermoen Airport will take you 17h 10m. State of Washington and Oslo Gardermoen Airport are separated by a distance of 4551 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from State of Washington to Oslo Gardermoen Airport one-way?

    One-way options have recently been found by users for as low as $188 on Icelandair. Other airlines that offer cheap prices include Scandinavian Airlines from $287 and Lufthansa from $372 one-way.

  • What are the most popular routes from State of Washington to Oslo Gardermoen Airport?

    The most popular route from State of Washington to Oslo Gardermoen Airport is Seattle/Tacoma Intl - Oslo Gardermoen. You may also consider Portland - Oslo Gardermoen or Spokane - Oslo Gardermoen.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington to Oslo Gardermoen 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 State of Washington to Oslo Gardermoen Airport?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Oslo Gardermoen Airport (average of $340). Flying from State of Washington to Oslo Gardermoen Airport 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

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Alternative routes for Washington to Oslo Gardermoen

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Washington to Oslo Gardermoen

Discover the top 10 airlines that operate flights from Washington to Oslo Gardermoen. 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 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$354Average$601FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$401Average$543FlexibilityNo cancel feeOn-time76%
DeltaCheapest$468Average$803FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$492Average$697FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$510Average$673FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$522Average$835FlexibilityNo cancel feeOn-time69%
KLMCheapest$524Average$683FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$526Average$590FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$538Average$711FlexibilityNo cancel feeOn-time76%
FinnairCheapest$569Average$766FlexibilityNo cancel feeOn-time76%

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