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$431+ Cheap flights from Oslo to Washington

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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — SEA
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
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Cheap flight deals from Oslo to Washington

Keep the following information in mind while searching for Oslo to Washington flight deals. Data was last updated July 31, 2025.

Round-trip from

$462
(Travelis)

One-way from

$431
(Kiwi.com)

Popular in

July

Cheapest in

October

Average price

$735
From Oslo to Washington
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One-way flight from Oslo to Washington
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Highest demand for flights based on searches. 15% potential increase in price ($102 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Oslo to Washington

Cheapest flights from Oslo to Washington
Explore the most affordable flight options available from Oslo to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2025.

This Travelis deal was found by Cheapflights users on 7/30. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/286:35 amOSL - PDX
2 stops19h 46mLufthansa
Mon 9/11:01 pmPDX - OSL
2 stops20h 04mLufthansa
Deal found 7/30$462
This Finnair deal was found by Cheapflights users on 7/31. 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.
Wed 11/58:45 amOSL - PDX
2 stops21h 38mMultiple Airlines
Mon 11/175:45 pmPDX - OSL
1 stop19h 55mMultiple Airlines
Deal found 7/31$465
This American Airlines deal was found by Cheapflights users on 7/31. 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.
Wed 11/56:55 amOSL - PDX
1 stop18h 00mAmerican Airlines
Mon 11/175:45 pmPDX - OSL
1 stop15h 55mAmerican Airlines
Deal found 7/31$469
This Finnair deal was found by Cheapflights users on 7/31. 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 11/78:25 amOSL - PDX
2 stops19h 49mFinnair
Fri 11/145:45 pmPDX - OSL
2 stops28h 55mFinnair
Deal found 7/31$472
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Fri 8/296:35 amOSL - PDX
2 stops25h 07mUnited Airlines
Fri 9/58:15 amPDX - OSL
2 stops39h 45mUnited Airlines
Deal found 7/31$480
This Ticket deal was found by Cheapflights users on 7/31. 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.
Thu 9/41:50 pmOSL - PDX
1 stop13h 05mIcelandair
Thu 9/183:20 pmPDX - OSL
1 stop15h 05mIcelandair
Deal found 7/31$496
This AirNGo deal was found by Cheapflights users on 7/31. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/287:45 amOSL - PDX
2 stops24h 41mBritish Airways
Mon 9/111:59 pmPDX - OSL
2 stops25h 36mBritish Airways
Deal found 7/31$507
This Delta deal was found by Cheapflights users on 7/31. 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 8/229:20 amOSL - SEA
2 stops19h 48mDelta
Wed 10/227:50 amSEA - OSL
2 stops19h 00mDelta
Deal found 7/31$516
This KLM deal was found by Cheapflights users on 7/31. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/297:15 pmOSL - PDX
1 stop25h 05mKLM
Thu 9/41:36 pmPDX - OSL
2 stops17h 44mKLM
Deal found 7/31$529
This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/135:40 amOSL - SEA
1 stop18h 10mMultiple Airlines
Sat 9/207:15 amSEA - OSL
2 stops20h 00mMultiple Airlines
Deal found 7/30$552
This Flysmarter deal was found by Cheapflights users on 7/30. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/299:50 amOSL - PDX
2 stops21h 52mAir Canada
Sat 9/610:50 pmPDX - OSL
2 stops33h 25mAir Canada
Deal found 7/30$553
This Delta deal was found by Cheapflights users on 7/31. 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 8/299:20 amOSL - PDX
1 stop35h 00mDelta
Sat 9/610:57 pmPDX - OSL
2 stops29h 43mDelta
Deal found 7/31$558

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oslo to Washington 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 July 31, 2025.
Use the filters below to find and compare flights from Oslo to Washington that are best for you.

Fly from

Oslo

Fly to

Washington

Route

Depart

Return

Price

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Thu 8/28

6:35 am-5:21 pm

2 stops19h 46m

Portland

Mon 9/1

1:01 pm-6:05 pm

2 stops20h 04m

$462

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Wed 11/5

8:45 am-9:23 pm

2 stops21h 38m

Portland

Mon 11/17

5:45 pm-10:40 pm

1 stop19h 55m

$465

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Wed 11/5

6:55 am-3:55 pm

1 stop18h 00m

Portland

Mon 11/17

5:45 pm-6:40 pm

1 stop15h 55m

$469

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Fri 11/7

8:25 am-7:14 pm

2 stops19h 49m

Portland

Fri 11/14

5:45 pm-7:40 am

2 stops28h 55m

$472

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Fri 8/29

6:35 am-10:42 pm

2 stops25h 07m

Portland

Fri 9/5

8:15 am-9:00 am

2 stops39h 45m

$480

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Thu 9/4

1:50 pm-5:55 pm

1 stop13h 05m

Portland

Thu 9/18

3:20 pm-3:25 pm

1 stop15h 05m

$496

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Thu 8/28

7:45 am-11:26 pm

2 stops24h 41m

Portland

Mon 9/1

11:59 pm-10:35 am

2 stops25h 36m

$507

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 8/22

9:20 am-8:08 pm

2 stops19h 48m

Seattle/Tacoma Intl

Wed 10/22

7:50 am-11:50 am

2 stops19h 00m

$516

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Fri 8/29

7:15 pm-11:20 am

1 stop25h 05m

Portland

Thu 9/4

1:36 pm-4:20 pm

2 stops17h 44m

$529

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sat 9/13

5:40 am-2:50 pm

1 stop18h 10m

Seattle/Tacoma Intl

Sat 9/20

7:15 am-12:15 pm

2 stops20h 00m

$552

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 47 results
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Best time to book a flight from Oslo to Washington

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

Cheapflights Insights

Everything you need to know about your flight from Oslo to Washington

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

Currently, January is the cheapest month in which you can book a flight from Oslo to State of Washington (average of $238). Flying from Oslo to State of Washington in June is currently the most expensive (average of $389). 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 WA?

Find hourly flight availability from Oslo to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 31, 2025.

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

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

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated July 31, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and Finnair from Oslo to Washington to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Finnair
7.6
Good
1,316 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air France
7.5
Good
1,465 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
SWISS
7.5
Good
1,686 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

Related info for your journey

Find useful and relevant information for your journey from Oslo to Washington. 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 Oslo to State of Washington one-way?

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at $483. Lufthansa flights start at $485 while deals on SWISS start at $519 one-way.

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

    Most travelers choose Oslo Gardermoen - Seattle/Tacoma Intl, Oslo Gardermoen - Portland or Oslo Sandefjord - Seattle/Tacoma Intl when deciding on the best route from Oslo to State of Washington.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Oslo to State of Washington (average of $238). Flying from Oslo to State of Washington in June is currently the most expensive (average of $389). 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 Oslo to Washington

See prices for flight routes from nearby airports that may be better suited for you.
Oslo Gardermoen to Newark flights
Oslo Gardermoen to John F Kennedy Intl flights
Oslo Gardermoen to LaGuardia flights
Sandefjord to John F Kennedy Intl flights
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Oslo Gardermoen to Dallas/Fort Worth flights
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Sandefjord to Newark flights
Oslo Gardermoen to Honolulu flights
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Sandefjord to Orlando flights
Oslo Gardermoen to Oakland flights
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Sandefjord to Los Angeles flights
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Bergen to Newark flights
Bergen to John F Kennedy Intl flights
Sandefjord to Dulles Intl flights
Oslo Gardermoen to Hobby flights
Oslo Gardermoen to Portland flights
Sandefjord to Seattle flights
Sandefjord to San Francisco flights
Oslo Gardermoen to Tampa flights
Stavanger to John F Kennedy Intl flights
Bergen to Miami flights
Oslo Gardermoen to George Bush Intcntl flights
Oslo Gardermoen to San Diego flights
Stavanger to Newark flights

Top 6 airlines flying from Oslo to Washington

Discover the top 6 airlines that operate flights from Oslo to Washington. 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$399Average$499FlexibilityNo 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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