HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Oslo

$270+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Oslo with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Washington to Oslo

Keep the following information in mind while searching for Washington to Oslo flight deals. Data was last updated May 1, 2025.

Round-trip from

$520
(Mytrip)

One-way from

$270
(Mytrip)

Popular in

June

Cheapest in

November

Average price

$676
From Washington to Oslo
Search Deals
One-way flight from Washington to Oslo
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($189 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals

Find 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 May 1, 2025.

This oojo deal was found by Cheapflights users on 4/30. 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 10/173:45 pmSEA - OSL
1 stop11h 50mIcelandair
Fri 11/71:05 pmOSL - SEA
1 stop12h 55mIcelandair
Deal found 4/30$388
This FlightHub deal was found by Cheapflights users on 4/29. 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.
Sun 8/244:00 pmSEA - OSL
1 stop13h 10mScandinavian Airlines
Sun 9/75:15 pmOSL - SEA
1 stop29h 35mScandinavian Airlines
Deal found 4/29$437
This British Airways deal was found by Cheapflights users on 4/30. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:50 pmSEA - OSL
1 stop14h 20mBritish Airways
Fri 11/78:45 amOSL - SEA
2 stops19h 13mBritish Airways
Deal found 4/30$475
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Mon 8/115:40 pmSEA - OSL
1 stop13h 55mAmerican Airlines
Fri 8/221:10 pmOSL - SEA
2 stops19h 06mAmerican Airlines
Deal found 4/30$478
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Tue 10/287:50 pmSEA - OSL
1 stop14h 20mMultiple Airlines
Fri 11/78:25 amOSL - SEA
2 stops19h 33mMultiple Airlines
Deal found 4/29$489
This SWISS deal was found by Cheapflights users on 4/29. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/114:25 pmSEA - OSL
1 stop22h 30mSWISS
Mon 8/255:40 amOSL - SEA
1 stop18h 15mSWISS
Deal found 4/29$507
This Finnair deal was found by Cheapflights users on 4/30. 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.
Thu 12/47:42 amSEA - OSL
2 stops18h 13mFinnair
Mon 12/158:50 pmOSL - SEA
2 stops31h 06mFinnair
Deal found 4/30$537
This Air Canada deal was found by Cheapflights users on 4/29. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:30 amSEA - OSL
2 stops44h 40mAir Canada
Fri 11/76:20 amOSL - SEA
2 stops21h 06mAir Canada
Deal found 4/29$539
This Ticket deal was found by Cheapflights users on 4/29. 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.
Mon 5/512:55 pmSEA - OSL
2 stops20h 10mLufthansa
Wed 5/217:15 amOSL - SEA
1 stop18h 44mLufthansa
Deal found 4/29$543
This United Airlines deal was found by Cheapflights users on 4/29. 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 8/1110:05 pmSEA - OSL
2 stops25h 50mUnited Airlines
Mon 8/259:50 amOSL - SEA
2 stops43h 51mUnited Airlines
Deal found 4/29$548
This oojo deal was found by Cheapflights users on 4/30. 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 10/153:20 pmPDX - OSL
1 stop12h 15mIcelandair
Mon 10/204:45 pmOSL - PDX
1 stop34h 10mIcelandair
Deal found 4/30$554
This Delta deal was found by Cheapflights users on 4/29. 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.
Mon 8/119:50 amSEA - OSL
2 stops18h 55mDelta
Mon 8/256:05 amOSL - SEA
1 stop20h 30mDelta
Deal found 4/29$568

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 May 1, 2025.
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

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 10/17

3:45 pm-12:35 pm

1 stop11h 50m

Oslo Gardermoen

Fri 11/7

1:05 pm-5:00 pm

1 stop12h 55m

$388

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 10/28

7:50 pm-6:10 pm

1 stop14h 20m

Oslo Gardermoen

Fri 11/7

8:45 am-6:58 pm

2 stops19h 13m

$475

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/11

5:40 pm-4:35 pm

1 stop13h 55m

Oslo Gardermoen

Fri 8/22

1:10 pm-11:16 pm

2 stops19h 06m

$478

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/11

4:25 pm-11:55 pm

1 stop22h 30m

Oslo Gardermoen

Mon 8/25

5:40 am-2:55 pm

1 stop18h 15m

$507

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 10/9

8:20 pm-11:55 pm

1 stop18h 35m

Oslo Gardermoen

Thu 11/20

8:45 am-10:29 pm

2 stops22h 44m

$539

PortlandOslo

PDX - OSL

PDXOSL

Portland

Wed 10/15

3:20 pm-12:35 pm

1 stop12h 15m

Oslo Gardermoen

Mon 10/20

4:45 pm-5:55 pm

1 stop34h 10m

$554

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Fri 10/17

7:00 am-10:10 pm

2 stops30h 10m

Oslo Gardermoen

Fri 11/7

6:20 am-11:26 pm

3 stops26h 06m

$556

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 5/12

5:30 am-6:05 pm

2 stops27h 35m

Oslo Gardermoen

Mon 5/19

9:45 am-7:37 pm

2 stops42h 52m

$564

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 5/26

4:00 pm-12:55 pm

1 stop11h 55m

Oslo Gardermoen

Mon 6/2

9:55 am-1:50 pm

1 stop12h 55m

$570

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 8/19

8:25 pm-8:40 pm

1 stop15h 15m

Oslo Gardermoen

Tue 9/2

6:30 am-4:54 pm

2 stops19h 24m

$575

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 52 results
1
2
3
...
6

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, November is the cheapest month in which you can book a flight from State of Washington to Oslo (average of $567). Flying from State of Washington to Oslo in June is currently the most expensive (average of $1,059). 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 WA to OSL?

Find hourly flight availability from Washington to Oslo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

When flying from State of Washington to Oslo, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Oslo by month

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

In terms of precipitation, rainfall in Oslo ranges from 1.6 - 3.5 inches per month. August is typically the wettest month, when rainfall can reach 3.5 in. February is typically the driest time to visit Oslo when rainfall is around 1.6 in.

Temperature in Oslo by month

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

If weather is an important factor for your trip to Oslo, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

Reviews of airlines servicing Oslo

Get insights into the airlines that provide service to Oslo. 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 Oslo. Reviews last updated May 1, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Finnair from Washington to Oslo to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,275 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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 ($270), KLM ($475), and Delta ($476).

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

    While some choose either Seattle/Tacoma Intl - Oslo Sandefjord or Portland - Oslo Gardermoen, 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, November is the cheapest month in which you can book a flight from State of Washington to Oslo (average of $567). Flying from State of Washington to Oslo in June is currently the most expensive (average of $1,059). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Oslo

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Oslo Gardermoen flights
Newark to Oslo Gardermoen flights
O'Hare Intl to Oslo Gardermoen flights
Seattle to Oslo Gardermoen flights
LaGuardia to Oslo Gardermoen flights
Dulles Intl to Oslo Gardermoen flights
Los Angeles to Oslo Gardermoen flights
Minneapolis to Oslo Gardermoen flights
San Francisco to Oslo Gardermoen flights
Miami to Oslo Gardermoen flights
John F Kennedy Intl to Sandefjord flights
Dallas/Fort Worth to Oslo Gardermoen flights
Reagan-National to Oslo Gardermoen flights
Baltimore to Oslo Gardermoen flights
Boston to Oslo Gardermoen flights
Midway to Oslo Gardermoen flights
John F Kennedy Intl to Bergen flights
Hobby to Oslo Gardermoen flights
O'Hare Intl to Sandefjord flights
Dulles Intl to Sandefjord flights
Atlanta to Oslo Gardermoen flights
Newark to Bergen flights
LaGuardia to Bergen flights
Los Angeles to Sandefjord flights
Denver to Oslo Gardermoen flights
Salt Lake City to Oslo Gardermoen flights
Seattle to Sandefjord flights
Love Field to Oslo Gardermoen flights
Detroit to Oslo Gardermoen flights
George Bush Intcntl to Oslo Gardermoen flights
Boston to Sandefjord flights
Newark to Sandefjord flights
Ontario to Oslo Gardermoen flights
Portland to Oslo Gardermoen flights
Santa Ana to Oslo Gardermoen flights
San Francisco to Sandefjord flights
San Diego to Oslo Gardermoen flights
Sky Harbor Intl to Oslo Gardermoen flights
Minneapolis to Bergen flights
Raleigh to Oslo Gardermoen flights
Burbank to Oslo Gardermoen flights
Philadelphia to Oslo Gardermoen flights
Oakland to Oslo Gardermoen flights
Charlotte to Oslo Gardermoen flights
Tampa to Oslo Gardermoen flights
Stewart to Oslo Gardermoen flights
San Jose to Oslo Gardermoen flights
Denver to Sandefjord flights
Cleveland to Oslo Gardermoen flights
Orlando to Oslo Gardermoen flights

Top 10 airlines flying from Washington to Oslo

Discover the top 10 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$446Average$1,044FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$473Average$662FlexibilityNo cancel feeOn-time70%
FinnairCheapest$484Average$737FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$494Average$897FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$563Average$898FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$564Average$694FlexibilityNo cancel feeOn-time71%
DeltaCheapest$569Average$996FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$570Average$840FlexibilityNo cancel feeOn-time69%
KLMCheapest$584Average$1,029FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$590Average$819FlexibilityNo cancel feeOn-time77%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.