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$360+ Cheap flights from Oslo Gardermoen (OSL) 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — SEA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Oslo Gardermoen to Washington

Keep the following information in mind while searching for Oslo Gardermoen to Washington flight deals. Data was last updated June 12, 2025.

Round-trip from

$487
(United Airlines)

One-way from

$360
(Mytrip)

Popular in

July

Cheapest in

November

Average price

$670
From Oslo Gardermoen to Washington
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One-way flight from Oslo Gardermoen to Washington
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Highest demand for flights based on searches. 18% potential increase in price ($127 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Oslo Gardermoen to Washington

Cheapest flights from Oslo Gardermoen to Washington
Explore the most affordable flight options available from Oslo Gardermoen to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/139:50 amOSL - SEA
2 stops31h 11mUnited Airlines
Mon 7/285:00 amSEA - OSL
2 stops28h 00mUnited Airlines
Deal found 6/11$487
This Finnair deal was found by Cheapflights users on 6/12. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/291:10 pmOSL - PDX
2 stops18h 48mFinnair
Sat 9/68:59 amPDX - OSL
2 stops18h 26mFinnair
Deal found 6/12$490
This Travelis deal was found by Cheapflights users on 6/11. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/218:35 amOSL - SEA
1 stop16h 25mFinnair
Sun 8/35:40 pmSEA - OSL
1 stop17h 05mFinnair
Deal found 6/11$504
This Travelis deal was found by Cheapflights users on 6/10. 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 8/285:20 pmOSL - PDX
1 stop26h 45mMultiple Airlines
Mon 9/11:30 pmPDX - OSL
2 stops18h 10mMultiple Airlines
Deal found 6/10$522
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/167:40 amOSL - SEA
2 stops26h 03mAmerican Airlines
Sun 8/35:40 pmSEA - OSL
1 stop13h 55mAmerican Airlines
Deal found 6/11$531
This United Airlines deal was found by Cheapflights users on 6/10. 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 6/249:45 amOSL - PDX
2 stops43h 07mUnited Airlines
Tue 7/157:37 amPDX - OSL
2 stops29h 33mUnited Airlines
Deal found 6/10$536
This Sembo deal was found by Cheapflights users on 6/12. 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 Sembo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/291:50 pmOSL - PDX
1 stop13h 05mIcelandair
Sat 9/63:20 pmPDX - OSL
1 stop12h 15mIcelandair
Deal found 6/12$545
This Delta deal was found by Cheapflights users on 6/10. 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.
Thu 8/286:30 amOSL - PDX
2 stops24h 28mDelta
Mon 9/13:18 pmPDX - OSL
2 stops20h 22mDelta
Deal found 6/10$555
This KLM deal was found by Cheapflights users on 6/10. 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 11/76:30 amOSL - PDX
1 stop13h 55mKLM
Fri 11/141:25 pmPDX - OSL
1 stop13h 30mKLM
Deal found 6/10$558
This Flysmarter deal was found by Cheapflights users on 6/12. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/286:35 amOSL - PDX
2 stops19h 46mAir Canada
Mon 9/110:50 pmPDX - OSL
2 stops33h 25mAir Canada
Deal found 6/12$562
This Flysmarter deal was found by Cheapflights users on 6/10. 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.
Tue 7/157:25 pmOSL - SEA
2 stops32h 46mBritish Airways
Tue 7/291:30 pmSEA - OSL
2 stops21h 15mBritish Airways
Deal found 6/10$562
This Flysmarter deal was found by Cheapflights users on 6/11. 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 Flysmarter 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 9/19:47 amPDX - OSL
2 stops17h 28mLufthansa
Deal found 6/11$566

Cheapflights Fare Finder

Customize your flight search to find flights from Oslo Gardermoen 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 June 12, 2025.
Use the filters below to find and compare flights from Oslo Gardermoen Airport to Washington that are best for you.

Fly from

Oslo Gardermoen

Fly to

Washington

Route

Depart

Return

Price

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sun 7/13

9:50 am-8:01 am

2 stops31h 11m

Seattle/Tacoma Intl

Mon 7/28

5:00 am-6:00 pm

2 stops28h 00m

$487

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Fri 8/29

1:10 pm-10:58 pm

2 stops18h 48m

Portland

Sat 9/6

8:59 am-12:25 pm

2 stops18h 26m

$490

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Mon 7/21

8:35 am-4:00 pm

1 stop16h 25m

Seattle/Tacoma Intl

Sun 8/3

5:40 pm-7:45 pm

1 stop17h 05m

$504

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Thu 8/28

5:20 pm-11:05 am

1 stop26h 45m

Portland

Mon 9/1

1:30 pm-4:40 pm

2 stops18h 10m

$522

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Wed 7/16

7:40 am-12:43 am

2 stops26h 03m

Seattle/Tacoma Intl

Sun 8/3

5:40 pm-4:35 pm

1 stop13h 55m

$531

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Tue 6/24

9:45 am-7:52 pm

2 stops43h 07m

Portland

Tue 7/15

7:37 am-10:10 pm

2 stops29h 33m

$536

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Fri 8/29

1:50 pm-5:55 pm

1 stop13h 05m

Portland

Sat 9/6

3:20 pm-12:35 pm

1 stop12h 15m

$545

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Thu 8/28

6:30 am-9:58 pm

2 stops24h 28m

Portland

Mon 9/1

3:18 pm-8:40 pm

2 stops20h 22m

$555

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Fri 11/7

6:30 am-11:25 am

1 stop13h 55m

Portland

Fri 11/14

1:25 pm-11:55 am

1 stop13h 30m

$558

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Thu 8/28

6:35 am-5:21 pm

2 stops19h 46m

Portland

Mon 9/1

10:50 pm-5:15 pm

2 stops33h 25m

$562

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 42 results
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Best time to book a flight from Oslo Gardermoen to Washington

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

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

Currently, January is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to State of Washington (average of $238). Flying from Oslo Gardermoen Airport to State of Washington in July is currently the most expensive (average of $391). 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 Gardermoen 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 June 12, 2025.

When flying from Oslo Gardermoen Airport 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 June 12, 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair from Oslo to Washington. 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
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Cathay Pacific
7.6
Good
892 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,623 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

    The cheapest airlines for a one-way flight from Oslo Gardermoen Airport to State of Washington are Finnair ($488), Scandinavian Airlines ($494), and Lufthansa ($495).

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to State of Washington (average of $238). Flying from Oslo Gardermoen Airport to State of Washington in July is currently the most expensive (average of $391). 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 Gardermoen to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Oslo Gardermoen to Washington

Discover the top 7 airlines that operate flights from Oslo Gardermoen 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$399Average$499FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$416Average$581FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$419Average$615FlexibilityNo cancel feeOn-time70%
FinnairCheapest$422Average$450FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$423Average$558FlexibilityNo cancel feeOn-time76%
DeltaCheapest$452Average$534FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$504Average$694FlexibilityNo cancel feeOn-time77%

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