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$215+ Cheap flights from Washington to Oslo

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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
mrt. 11 — mrt. 181
wo 3/11
wo 3/18
1 adult, Economy
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Cheap flight deals from Washington to Oslo

Cheapest flights from Washington to Oslo
Explore the most affordable flight options available from Washington to Oslo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on februari 9, 2026.

This oojo deal was found by Cheapflights users on 2/8. 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.
za 3/283:45 pm
PDX
-
OSL
1 stop11h 50m
Icelandair
zo 4/51:50 pm
OSL
-
PDX
1 stop13h 10m
Icelandair
Deal found 2/8$397
This oojo deal was found by Cheapflights users on 2/9. 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.
di 4/143:40 pm
SEA
-
OSL
1 stop11h 55m
Icelandair
di 4/211:50 pm
OSL
-
SEA
1 stop15h 50m
Icelandair
Deal found 2/9$397
This oojo deal was found by Cheapflights users on 2/7. 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.
di 4/147:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
zo 4/264:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 2/7$399
This oojo deal was found by Cheapflights users on 2/8. 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.
ma 10/193:30 pm
PDX
-
OSL
1 stop12h 05m
Icelandair
za 10/245:00 pm
OSL
-
PDX
1 stop34h 00m
Icelandair
Deal found 2/8$400
This FlightHub deal was found by Cheapflights users on 2/8. 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.
ma 4/133:40 pm
SEA
-
OSL
1 stop11h 55m
Icelandair
di 4/211:50 pm
OSL
-
SEA
1 stop15h 50m
Icelandair
Deal found 2/8$401
This oojo deal was found by Cheapflights users on 2/6. 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.
do 10/87:00 pm
SEA
-
OSL
1 stop11h 25m
Icelandair
ma 10/124:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 2/6$404
This oojo deal was found by Cheapflights users on 2/7. 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.
vr 5/87:00 pm
SEA
-
OSL
1 stop11h 25m
Icelandair
vr 5/224:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 2/7$413
This oojo deal was found by Cheapflights users on 2/9. 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.
ma 5/183:30 pm
PDX
-
OSL
1 stop12h 05m
Icelandair
ma 5/254:30 pm
OSL
-
PDX
1 stop28h 15m
Icelandair
Deal found 2/9$415
This oojo deal was found by Cheapflights users on 2/9. 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.
do 5/147:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
za 5/234:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 2/9$415
This oojo deal was found by Cheapflights users on 2/9. 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.
do 5/147:00 pm
SEA
-
OSL
1 stop32h 35m
Icelandair
zo 5/244:30 pm
OSL
-
SEA
1 stop34h 25m
Icelandair
Deal found 2/9$416
This oojo deal was found by Cheapflights users on 2/7. 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.
do 5/287:00 pm
SEA
-
OSL
1 stop11h 25m
Icelandair
ma 6/84:30 pm
OSL
-
SEA
1 stop13h 10m
Icelandair
Deal found 2/7$418
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
ma 4/137:00 pm
SEA
-
OSL
1 stop11h 25m
Icelandair
do 4/231:50 pm
OSL
-
SEA
1 stop13h 05m
Icelandair
Deal found 2/8$421

Find flight deals from Washington to Oslo

Keep the following information in mind while searching for Washington to Oslo flight deals. Data was last updated februari 9, 2026.

Round-trip from

$392
(Mytrip)

One-way from

$215
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$558
From Washington to Oslo
Search Deals
One-way flight from Washington to Oslo
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($119 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Oslo 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 februari 9, 2026.
Use the filters below to find and compare flights from Washington to Oslo that are best for you.

Fly from

Washington

Fly to

Oslo

Route

Depart

Return

Price

PortlandOslo

PDX - OSL

PDXOSL

Portland

za 3/28

3:45 pm-11:35 am

1 stop11h 50m

Oslo Gardermoen

zo 4/5

1:50 pm-6:00 pm

1 stop13h 10m

$397

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

di 4/14

3:40 pm-12:35 pm

1 stop11h 55m

Oslo Gardermoen

di 4/21

1:50 pm-8:40 pm

1 stop15h 50m

$397

PortlandOslo

PDX - OSL

PDXOSL

Portland

ma 5/18

3:30 pm-12:35 pm

1 stop12h 05m

Oslo Gardermoen

ma 5/25

4:30 pm-11:45 am

1 stop28h 15m

$415

PortlandOslo

PDX - OSL

PDXOSL

Portland

di 7/21

3:30 pm-3:25 pm

1 stop14h 55m

Oslo Gardermoen

ma 8/3

4:30 pm-11:45 am

1 stop28h 15m

$451

PortlandOslo

PDX - OSL

PDXOSL

Portland

di 6/2

3:30 pm-3:25 pm

1 stop14h 55m

Oslo Gardermoen

do 6/18

4:30 pm-5:55 pm

1 stop34h 25m

$451

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

ma 3/9

3:10 pm-4:20 pm

1 stop17h 10m

Oslo Gardermoen

ma 3/16

6:25 am-2:05 pm

1 stop15h 40m

$462

PortlandOslo

PDX - OSL

PDXOSL

Portland

ma 4/20

6:05 pm-8:40 pm

2 stops17h 35m

Oslo Gardermoen

ma 4/27

6:30 am-11:10 am

1 stop13h 40m

$468

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

di 4/14

3:35 pm-8:40 pm

2 stops20h 05m

Oslo Gardermoen

di 4/21

6:30 am-11:45 am

1 stop14h 15m

$468

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

ma 4/13

9:45 pm-1:45 pm

1 stop31h 00m

Oslo Gardermoen

zo 4/19

8:00 am-8:04 pm

1 stop21h 04m

$475

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

wo 4/15

9:45 pm-8:40 pm

1 stop13h 55m

Oslo Gardermoen

zo 4/19

8:00 am-8:04 pm

1 stop21h 04m

$475

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/8

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Oslo

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

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

Currently, April is the cheapest month in which you can book a flight from State of Washington to Oslo (average of $327). Flying from State of Washington to Oslo in June is currently the most expensive (average of $522). 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?

Related info for your journey

Find useful and relevant information for your journey from Washington to Oslo. 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?

    Icelandair, Delta, and Scandinavian Airlines can get you from State of Washington to Oslo in just under 11h 50m. Your travel time can differ by up to 5h 20m. The distance from State of Washington to Oslo is about 4674 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The cheapest airlines for a one-way flight from State of Washington to Oslo are Icelandair ($188), Scandinavian Airlines ($287), and British Airways ($337).

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

    While some choose either Portland - Oslo Gardermoen or Seattle/Tacoma Intl - Oslo Sandefjord, Seattle/Tacoma Intl - Oslo Gardermoen is the most popular route from State of Washington to Oslo.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington to Oslo 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?

    Currently, April is the cheapest month in which you can book a flight from State of Washington to Oslo (average of $327). Flying from State of Washington to Oslo in June is currently the most expensive (average of $522). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Washington to Oslo

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Washington to Oslo

Discover the top 9 airlines that operate flights from Washington to Oslo. 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 februari 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$353Average$558FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$392Average$531FlexibilityNo cancel feeOn-time76%
DeltaCheapest$468Average$746FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$488Average$790FlexibilityNo cancel feeOn-time71%
FinnairCheapest$491Average$766FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$492Average$691FlexibilityNo cancel feeOn-time77%
KLMCheapest$506Average$765FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$517Average$659FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$538Average$699FlexibilityNo cancel feeOn-time76%

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