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$325+ 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — SEA
Apr 9 — Apr 161
Wed 4/9
Wed 4/16
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 April 4, 2025.

Round-trip from

$423
(Ticket)

One-way from

$325
(Kiwi.com)

Popular in

August

Cheapest in

October

Average price

$498
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. 14% potential increase in price ($94 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 April 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 April 4, 2025.

This Ticket deal was found by Cheapflights users on 4/4. 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.
Tue 5/66:35 amOSL - SEA
2 stops20h 58mLufthansa
Wed 5/286:50 pmSEA - OSL
1 stop18h 20mLufthansa
Deal found 4/4$423
This Ticket deal was found by Cheapflights users on 4/3. 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 5/128:00 amOSL - PDX
1 stop18h 35mMultiple Airlines
Mon 5/267:25 pmPDX - OSL
1 stop14h 15mMultiple Airlines
Deal found 4/3$427
This American Airlines deal was found by Cheapflights users on 4/3. 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 5/121:10 pmOSL - PDX
2 stops18h 49mAmerican Airlines
Mon 5/2612:09 pmPDX - OSL
2 stops19h 26mAmerican Airlines
Deal found 4/3$438
This British Airways deal was found by Cheapflights users on 4/3. 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.
Mon 5/1211:35 amOSL - PDX
1 stop15h 00mBritish Airways
Mon 5/267:25 pmPDX - OSL
1 stop14h 15mBritish Airways
Deal found 4/3$439
This Ticket deal was found by Cheapflights users on 4/4. 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.
Fri 5/238:30 pmOSL - SEA
1 stop28h 30mMultiple Airlines
Fri 6/61:29 pmSEA - OSL
2 stops24h 01mMultiple Airlines
Deal found 4/4$440
This British Airways deal was found by Cheapflights users on 4/4. 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 5/67:45 amOSL - SEA
2 stops23h 05mBritish Airways
Wed 5/288:20 pmSEA - OSL
1 stop18h 10mBritish Airways
Deal found 4/4$451
This United Airlines deal was found by Cheapflights users on 4/4. 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.
Tue 5/66:35 amOSL - SEA
2 stops24h 38mUnited Airlines
Wed 5/2812:55 pmSEA - OSL
2 stops20h 10mUnited Airlines
Deal found 4/4$454
This Cheapflightsfares deal was found by Cheapflights users on 4/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/31:10 pmOSL - SEA
2 stops31h 25mFinnair
Mon 6/165:40 pmSEA - OSL
1 stop13h 55mFinnair
Deal found 4/3$499
This American Airlines deal was found by Cheapflights users on 4/4. 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.
Fri 5/231:10 pmOSL - SEA
2 stops38h 12mAmerican Airlines
Fri 6/68:00 amSEA - OSL
2 stops29h 30mAmerican Airlines
Deal found 4/4$557
This Flysmarter deal was found by Cheapflights users on 4/4. 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 5/236:35 amOSL - SEA
1 stop14h 50mAir Canada
Fri 6/62:15 pmSEA - OSL
2 stops22h 55mAir Canada
Deal found 4/4$561
This KAYAK deal was found by Cheapflights users on 4/3. 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.
Sat 6/148:35 amOSL - PDX
2 stops22h 55mFinnair
Tue 7/17:25 pmPDX - OSL
1 stop19h 00mFinnair
Deal found 4/3$621
This Delta deal was found by Cheapflights users on 4/3. 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.
Sat 6/146:30 amOSL - PDX
2 stops19h 40mDelta
Tue 7/111:55 amPDX - OSL
2 stops19h 45mDelta
Deal found 4/3$630

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 April 4, 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

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Tue 5/6

6:35 am-6:33 pm

2 stops20h 58m

Seattle/Tacoma Intl

Wed 5/28

6:50 pm-10:10 pm

1 stop18h 20m

$423

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Mon 5/12

8:00 am-5:35 pm

1 stop18h 35m

Portland

Mon 5/26

7:25 pm-6:40 pm

1 stop14h 15m

$427

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Mon 5/12

1:10 pm-10:59 pm

2 stops18h 49m

Portland

Mon 5/26

12:09 pm-4:35 pm

2 stops19h 26m

$438

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Mon 5/12

11:35 am-5:35 pm

1 stop15h 00m

Portland

Mon 5/26

7:25 pm-6:40 pm

1 stop14h 15m

$439

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 5/23

8:30 pm-4:00 pm

1 stop28h 30m

Seattle/Tacoma Intl

Fri 6/6

1:29 pm-10:30 pm

2 stops24h 01m

$440

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Tue 5/6

7:45 am-9:50 pm

2 stops23h 05m

Seattle/Tacoma Intl

Wed 5/28

8:20 pm-11:30 pm

1 stop18h 10m

$451

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Tue 5/6

6:35 am-10:13 pm

2 stops24h 38m

Seattle/Tacoma Intl

Wed 5/28

12:55 pm-6:05 pm

2 stops20h 10m

$454

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Tue 6/3

1:10 pm-11:35 am

2 stops31h 25m

Seattle/Tacoma Intl

Mon 6/16

5:40 pm-4:35 pm

1 stop13h 55m

$499

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 5/23

1:10 pm-6:22 pm

2 stops38h 12m

Seattle/Tacoma Intl

Fri 6/6

8:00 am-10:30 pm

2 stops29h 30m

$557

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 5/23

6:35 am-12:25 pm

1 stop14h 50m

Seattle/Tacoma Intl

Fri 6/6

2:15 pm-10:10 pm

2 stops22h 55m

$561

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/4

Showing 1-10 of 40 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 July is currently the most expensive (average of $411). 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 April 4, 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.

Rainfall in Washington by month

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

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

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

If weather is an important factor for your trip to State of Washington, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 April 4, 2025.
See what other customers who have flown with Delta, KLM and Finnair from Oslo to Washington have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,901 reviews

Boarding

8.2

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,901 reviews
Delta
8.0
Very good
7,901 reviews

Boarding

8.2

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,324 reviews
Delta
8.0
Very good
7,901 reviews

Boarding

8.2

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very good
7,901 reviews

Boarding

8.2

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,618 reviews
Delta
8.0
Very good
7,901 reviews

Boarding

8.2

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Scandinavian Airlines
7.3
Good
1,328 reviews
Delta
8.0
Very good
7,901 reviews

Boarding

8.2

Crew

8.5

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 Scandinavian Airlines, which is currently one of the cheapest options available, starting at $503. Icelandair flights start at $508 while deals on Finnair start at $544 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 July is currently the most expensive (average of $411). 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.
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Top 5 airlines flying from Oslo to Washington

Discover the top 5 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 April 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$395Average$535FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$416Average$682FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$419Average$674FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$423Average$563FlexibilityNo cancel feeOn-time76%
DeltaCheapest$452Average$592FlexibilityNo cancel feeOn-timeN/A

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