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$318+ 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 6/7. Fares are subject to change and may not be available on all flights or dates of travel.
OSL — SEA
Apr 29 — May 61
Tue 4/29
Tue 5/6
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 April 24, 2025.

Round-trip from

$430
(Ticket)

One-way from

$318
(Trip.com)

Popular in

July

Cheapest in

October

Average price

$494
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. 19% potential increase in price ($136 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 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 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 April 24, 2025.

This Ticket deal was found by Cheapflights users on 4/23. 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.
Sat 5/248:35 amOSL - SEA
1 stop16h 25mMultiple Airlines
Fri 6/68:20 pmSEA - OSL
1 stop17h 10mMultiple Airlines
Deal found 4/23$430
This Ticket deal was found by Cheapflights users on 4/23. 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.
Sat 5/241:10 pmOSL - SEA
1 stop11h 50mFinnair
Sat 6/75:40 pmSEA - OSL
1 stop29h 15mFinnair
Deal found 4/23$445
This Mytrip deal was found by Cheapflights users on 4/23. 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 5/245:10 pmOSL - SEA
1 stop27h 20mBritish Airways
Fri 6/61:30 pmSEA - OSL
1 stop24h 00mBritish Airways
Deal found 4/23$454
This United Airlines deal was found by Cheapflights users on 4/23. 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 5/166:35 amOSL - SEA
2 stops22h 02mUnited Airlines
Sun 5/256:50 pmSEA - OSL
1 stop14h 15mUnited Airlines
Deal found 4/23$470
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Sat 5/248:20 amOSL - SEA
2 stops23h 41mAmerican Airlines
Fri 6/68:20 pmSEA - OSL
1 stop17h 10mAmerican Airlines
Deal found 4/23$481
This Mytrip deal was found by Cheapflights users on 4/23. 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.
Fri 5/164:30 pmOSL - SEA
1 stop13h 10mIcelandair
Sun 5/253:45 pmSEA - OSL
1 stop14h 40mIcelandair
Deal found 4/23$482
This Delta deal was found by Cheapflights users on 4/23. 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 5/246:30 amOSL - SEA
2 stops17h 01mDelta
Sat 6/77:25 amSEA - OSL
2 stops18h 40mDelta
Deal found 4/23$513
This Lufthansa deal was found by Cheapflights users on 4/23. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/206:35 amOSL - SEA
1 stop14h 50mLufthansa
Wed 7/22:20 pmSEA - OSL
1 stop24h 30mLufthansa
Deal found 4/23$514
This British Airways deal was found by Cheapflights users on 4/23. 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.
Fri 11/78:45 amOSL - PDX
2 stops21h 16mBritish Airways
Fri 11/146:30 pmPDX - OSL
1 stop18h 45mBritish Airways
Deal found 4/23$524
This KLM deal was found by Cheapflights users on 4/23. 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 stop17h 50mKLM
Deal found 4/23$530
This SWISS deal was found by Cheapflights users on 4/23. 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.
Sat 6/75:40 amOSL - SEA
1 stop18h 10mSWISS
Sat 6/144:20 pmSEA - OSL
1 stop35h 45mSWISS
Deal found 4/23$542
This Travelis deal was found by Cheapflights users on 4/23. 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 8/284:30 pmOSL - PDX
1 stop34h 25mIcelandair
Mon 9/13:20 pmPDX - OSL
1 stop12h 15mIcelandair
Deal found 4/23$544

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 April 24, 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

Sat 5/24

8:35 am-4:00 pm

1 stop16h 25m

Seattle/Tacoma Intl

Fri 6/6

8:20 pm-10:30 pm

1 stop17h 10m

$430

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sat 5/24

1:10 pm-4:00 pm

1 stop11h 50m

Seattle/Tacoma Intl

Sat 6/7

5:40 pm-7:55 am

1 stop29h 15m

$445

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sat 5/24

5:10 pm-11:30 am

1 stop27h 20m

Seattle/Tacoma Intl

Fri 6/6

1:30 pm-10:30 pm

1 stop24h 00m

$454

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 5/16

6:35 am-7:37 pm

2 stops22h 02m

Seattle/Tacoma Intl

Sun 5/25

6:50 pm-6:05 pm

1 stop14h 15m

$470

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sat 5/24

8:20 am-11:01 pm

2 stops23h 41m

Seattle/Tacoma Intl

Fri 6/6

8:20 pm-10:30 pm

1 stop17h 10m

$481

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Fri 5/16

4:30 pm-8:40 pm

1 stop13h 10m

Seattle/Tacoma Intl

Sun 5/25

3:45 pm-3:25 pm

1 stop14h 40m

$482

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sat 5/24

6:30 am-2:31 pm

2 stops17h 01m

Seattle/Tacoma Intl

Sat 6/7

7:25 am-11:05 am

2 stops18h 40m

$513

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Tue 5/20

6:35 am-12:25 pm

1 stop14h 50m

Seattle/Tacoma Intl

Wed 7/2

2:20 pm-11:50 pm

1 stop24h 30m

$514

OsloSeattle

OSL - SEA

OSLSEA

Oslo Gardermoen

Sat 6/7

5:40 am-2:50 pm

1 stop18h 10m

Seattle/Tacoma Intl

Sat 6/14

4:20 pm-1:05 pm

1 stop35h 45m

$542

OsloPortland

OSL - PDX

OSLPDX

Oslo Gardermoen

Thu 8/28

4:30 pm-5:55 pm

1 stop34h 25m

Portland

Mon 9/1

3:20 pm-12:35 pm

1 stop12h 15m

$544

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 39 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 $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 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 April 24, 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 April 24, 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
7,920 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

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

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

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

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

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
1,272 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

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
SWISS
7.5
Good
1,582 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

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

Entertainment

7.9

Food

7.3

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

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 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 Icelandair ($524), Scandinavian Airlines ($525), and British Airways ($549).

  • 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 $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.

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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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Sandefjord to Dulles Intl flights
Sandefjord to Boston flights
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Top 5 airlines flying from Oslo Gardermoen to Washington

Discover the top 5 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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$395Average$540FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$416Average$682FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$419Average$671FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$423Average$567FlexibilityNo cancel feeOn-time76%
DeltaCheapest$452Average$534FlexibilityNo cancel feeOn-timeN/A

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