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Oslo Gardermoen

$250+ Cheap flights from Washington to Oslo Gardermoen (OSL)

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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Apr 30 — May 71
Wed 4/30
Wed 5/7
1 adult, Economy
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Cheap flight deals from Washington to Oslo Gardermoen

Keep the following information in mind while searching for Washington to Oslo Gardermoen flight deals. Data was last updated April 25, 2025.

Round-trip from

$550
(Mytrip)

One-way from

$290
(oojo)

Popular in

June

Cheapest in

November

Average price

$583
From Washington to Oslo Gardermoen
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One-way flight from Washington to Oslo Gardermoen
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($190 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($35 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 Washington to Oslo Gardermoen

Cheapest flights from Washington to Oslo Gardermoen
Explore the most affordable flight options available from Washington to Oslo Gardermoen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 25, 2025.

This oojo deal was found by Cheapflights users on 4/24. 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.
Mon 8/117:00 pmSEA - OSL
1 stop11h 25mIcelandair
Mon 8/254:30 pmOSL - SEA
1 stop13h 10mIcelandair
Deal found 4/24$426
This Ovago deal was found by Cheapflights users on 4/24. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/244:00 pmSEA - OSL
1 stop19h 15mScandinavian Airlines
Sun 9/78:55 pmOSL - SEA
1 stop25h 55mScandinavian Airlines
Deal found 4/24$460
This SWISS deal was found by Cheapflights users on 4/25. 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.
Tue 8/1212:40 pmSEA - OSL
2 stops26h 15mSWISS
Wed 8/205:40 amOSL - SEA
2 stops25h 40mSWISS
Deal found 4/25$521
This FlightHub deal was found by Cheapflights users on 4/25. 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.
Tue 10/284:10 pmSEA - OSL
1 stop23h 20mMultiple Airlines
Fri 11/76:20 amOSL - SEA
2 stops21h 06mMultiple Airlines
Deal found 4/25$534
This FlightHub deal was found by Cheapflights users on 4/25. 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.
Tue 10/284:10 pmSEA - OSL
1 stop23h 20mLufthansa
Fri 11/76:00 amOSL - SEA
1 stop16h 20mLufthansa
Deal found 4/25$545
This United Airlines deal was found by Cheapflights users on 4/25. 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 4/25$548
This American Airlines deal was found by Cheapflights users on 4/25. 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 8/111:30 pmSEA - OSL
1 stop25h 00mAmerican Airlines
Fri 8/221:10 pmOSL - SEA
2 stops20h 34mAmerican Airlines
Deal found 4/25$554
This FlightHub deal was found by Cheapflights users on 4/24. 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.
Mon 10/133:20 pmPDX - OSL
1 stop12h 15mIcelandair
Mon 11/31:05 pmOSL - PDX
1 stop12h 55mIcelandair
Deal found 4/24$560
This British Airways deal was found by Cheapflights users on 4/25. 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 10/283:13 pmSEA - OSL
2 stops18h 57mBritish Airways
Fri 11/78:45 amOSL - SEA
2 stops19h 13mBritish Airways
Deal found 4/25$560
This Delta deal was found by Cheapflights users on 4/24. 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 4/24$568
This Justfly.com deal was found by Cheapflights users on 4/25. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/125:30 amSEA - OSL
2 stops27h 35mAir Canada
Mon 5/196:35 amOSL - SEA
2 stops22h 02mAir Canada
Deal found 4/25$585
This FlightHub deal was found by Cheapflights users on 4/25. 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.
Wed 10/1511:10 amPDX - OSL
2 stops18h 00mScandinavian Airlines
Mon 10/208:55 pmOSL - PDX
2 stops34h 25mScandinavian Airlines
Deal found 4/25$645

Cheapflights Fare Finder

Customize your flight search to find flights from Washington to Oslo Gardermoen 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 25, 2025.
Use the filters below to find and compare flights from Washington to Oslo Gardermoen Airport that are best for you.

Fly from

Washington

Fly to

Oslo Gardermoen

Route

Depart

Return

Price

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/11

7:00 pm-3:25 pm

1 stop11h 25m

Oslo Gardermoen

Mon 8/25

4:30 pm-8:40 pm

1 stop13h 10m

$426

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Sun 8/24

4:00 pm-8:15 pm

1 stop19h 15m

Oslo Gardermoen

Sun 9/7

8:55 pm-1:50 pm

1 stop25h 55m

$460

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 8/12

12:40 pm-11:55 pm

2 stops26h 15m

Oslo Gardermoen

Wed 8/20

5:40 am-10:20 pm

2 stops25h 40m

$521

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/11

7:20 am-6:05 pm

2 stops25h 45m

Oslo Gardermoen

Mon 8/25

5:40 am-2:55 pm

1 stop18h 15m

$542

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/11

10:05 pm-8:55 am

2 stops25h 50m

Oslo Gardermoen

Mon 8/25

9:50 am-8:41 pm

2 stops43h 51m

$548

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/11

1:30 pm-11:30 pm

1 stop25h 00m

Oslo Gardermoen

Fri 8/22

1:10 pm-12:44 am

2 stops20h 34m

$554

PortlandOslo

PDX - OSL

PDXOSL

Portland

Mon 10/13

3:20 pm-12:35 pm

1 stop12h 15m

Oslo Gardermoen

Mon 11/3

1:05 pm-5:00 pm

1 stop12h 55m

$560

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Mon 8/11

9:50 am-1:45 pm

2 stops18h 55m

Oslo Gardermoen

Mon 8/25

6:05 am-5:35 pm

1 stop20h 30m

$568

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Tue 8/12

1:29 pm-4:15 pm

2 stops17h 46m

Oslo Gardermoen

Wed 8/20

5:05 pm-11:35 am

1 stop27h 30m

$570

SeattleOslo

SEA - OSL

SEAOSL

Seattle/Tacoma Intl

Thu 8/14

1:00 pm-10:10 pm

2 stops24h 10m

Oslo Gardermoen

Wed 8/20

6:50 pm-6:49 pm

2 stops32h 59m

$584

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

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

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

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

Currently, November is the cheapest month in which you can book a flight from State of Washington to Oslo Gardermoen Airport (average of $567). Flying from State of Washington to Oslo Gardermoen Airport in June is currently the most expensive (average of $1,101). 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 Gardermoen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 25, 2025.

When flying from State of Washington to Oslo Gardermoen Airport, 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 Gardermoen by month

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

In terms of precipitation, rainfall in Oslo Gardermoen Airport 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 Gardermoen Airport when rainfall is around 1.6 in.

Temperature in Oslo Gardermoen by month

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

If weather is an important factor for your trip to Oslo Gardermoen Airport, 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 Gardermoen

Get insights into the airlines that provide service to Oslo Gardermoen. 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 Gardermoen. Reviews last updated April 25, 2025.
Read reviews from past customers who have flown Delta, KLM and SWISS from Washington to Oslo. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,920 reviews

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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
1,333 reviews
Delta
8.0
Very good
7,920 reviews

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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
1,582 reviews
Delta
8.0
Very good
7,920 reviews

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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
8,685 reviews
Delta
8.0
Very good
7,920 reviews

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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.
Scandinavian Airlines
7.3
Good
1,345 reviews
Delta
8.0
Very good
7,920 reviews

Crew

8.5

Overall

8.0

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

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 Gardermoen. 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 Gardermoen Airport one-way?

    One-way options have recently been found by users for as low as $290 on Icelandair. Other airlines that offer cheap prices include Delta from $461 and KLM from $475 one-way.

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

    The most popular route from State of Washington to Oslo Gardermoen Airport is Seattle/Tacoma Intl - Oslo Gardermoen. You may also consider Portland - Oslo Gardermoen or Spokane - Oslo Gardermoen.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from State of Washington to Oslo Gardermoen Airport (average of $567). Flying from State of Washington to Oslo Gardermoen Airport in June is currently the most expensive (average of $1,101). 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.

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Alternative routes for Washington to Oslo Gardermoen

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Top 10 airlines flying from Washington to Oslo Gardermoen

Discover the top 10 airlines that operate flights from Washington to Oslo Gardermoen. 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 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$446Average$1,051FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$473Average$662FlexibilityNo cancel feeOn-time70%
FinnairCheapest$484Average$781FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$494Average$899FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$563Average$912FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$564Average$694FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$570Average$836FlexibilityNo cancel feeOn-time69%
DeltaCheapest$573Average$996FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$584Average$1,048FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$590Average$885FlexibilityNo cancel feeOn-time77%

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