$208+ 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Jun 17 — Jun 241
1 adult, Economy
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1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 June 12, 2025.
Round-trip from | $517 (oojo) |
|---|---|
One-way from | $208 (FlightHub) |
Popular in | June |
Cheapest in | November |
Average price | $862 |
Find flight deals from Washington to Oslo Gardermoen
Cheapest flights from Washington to Oslo GardermoenExplore 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 June 12, 2025.
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 June 12, 2025.
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/153:20 pmPDX - OSL
1 stop12h 15mIcelandair
Wed 10/291:05 pmOSL - PDX
1 stop12h 55mIcelandair
Deal found 6/12![Icelandair logo]()
$517
This Mytrip deal was found by Cheapflights users on 6/9. 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.
Sun 7/64:00 pmSEA - OSL
1 stop21h 05mScandinavian Airlines
Sun 7/138:55 pmOSL - SEA
1 stop25h 55mScandinavian Airlines
Deal found 6/9![Scandinavian Airlines logo]()
$531
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/153:45 pmSEA - OSL
1 stop14h 40mIcelandair
Wed 7/304:30 pmOSL - SEA
1 stop13h 10mIcelandair
Deal found 6/10![Icelandair logo]()
$535
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1112:20 amSEA - OSL
2 stops26h 55mUnited Airlines
Thu 8/216:35 amOSL - SEA
1 stop14h 20mUnited Airlines
Deal found 6/12![United Airlines logo]()
$537
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/91:30 pmSEA - OSL
1 stop24h 55mBritish Airways
Wed 10/17:40 amOSL - SEA
2 stops21h 29mBritish Airways
Deal found 6/10![British Airways logo]()
$541
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/215:35 pmSEA - OSL
1 stop30h 10mDelta
Tue 8/266:30 amOSL - SEA
2 stops18h 30mDelta
Deal found 6/11![Delta logo]()
$542
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/411:05 amSEA - OSL
2 stops21h 45mLufthansa
Mon 12/156:15 amOSL - SEA
1 stop14h 55mLufthansa
Deal found 6/10![Lufthansa logo]()
$543
This Finnair 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/105:40 pmSEA - OSL
1 stop17h 05mFinnair
Sat 8/238:35 amOSL - SEA
2 stops24h 05mFinnair
Deal found 6/10![Finnair logo]()
$548
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:55 amSEA - OSL
2 stops17h 45mMultiple Airlines
Mon 10/208:00 amOSL - SEA
2 stops21h 04mMultiple Airlines
Deal found 6/12![Multiple Airlines logo]()
$555
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/111:45 pmSEA - OSL
2 stops25h 10mSWISS
Mon 8/255:40 amOSL - SEA
2 stops22h 09mSWISS
Deal found 6/11![SWISS logo]()
$556
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/97:15 amSEA - OSL
2 stops23h 25mAir Canada
Wed 10/19:45 amOSL - SEA
2 stops17h 51mAir Canada
Deal found 6/12![Air Canada logo]()
$562
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2012:35 pmPDX - OSL
2 stops19h 45mScandinavian Airlines
Wed 8/279:00 amOSL - PDX
2 stops20h 27mScandinavian Airlines
Deal found 6/10![Scandinavian Airlines logo]()
$591
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 June 12, 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
PortlandOslo
PDX - OSL
PDXOSL
Portland
Wed 10/15
3:20 pm-12:35 pm
1 stop12h 15m
Oslo Gardermoen
Wed 10/29
1:05 pm-6:00 pm
1 stop12h 55m
$517
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Sun 7/6
4:00 pm-10:05 pm
1 stop21h 05m
Oslo Gardermoen
Sun 7/13
8:55 pm-1:50 pm
1 stop25h 55m
$531
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Tue 7/15
3:45 pm-3:25 pm
1 stop14h 40m
Oslo Gardermoen
Wed 7/30
4:30 pm-8:40 pm
1 stop13h 10m
$535
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Tue 7/22
1:30 pm-4:15 pm
1 stop17h 45m
Oslo Gardermoen
Tue 8/26
7:45 am-11:40 pm
2 stops24h 55m
$536
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Mon 8/11
12:20 am-12:15 pm
2 stops26h 55m
Oslo Gardermoen
Thu 8/21
6:35 am-11:55 am
1 stop14h 20m
$537
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Mon 7/21
5:35 pm-8:45 am
1 stop30h 10m
Oslo Gardermoen
Tue 8/26
6:30 am-4:00 pm
2 stops18h 30m
$542
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Thu 12/4
11:05 am-5:50 pm
2 stops21h 45m
Oslo Gardermoen
Mon 12/15
6:15 am-12:10 pm
1 stop14h 55m
$543
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Sun 8/10
5:40 pm-7:45 pm
1 stop17h 05m
Oslo Gardermoen
Sat 8/23
8:35 am-11:40 pm
2 stops24h 05m
$548
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Wed 10/15
7:55 am-10:40 am
2 stops17h 45m
Oslo Gardermoen
Mon 10/20
8:00 am-8:04 pm
2 stops21h 04m
$555
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Mon 8/11
1:45 pm-11:55 pm
2 stops25h 10m
Oslo Gardermoen
Mon 8/25
5:40 am-6:49 pm
2 stops22h 09m
$556
Showing 1-10 of 50 results
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 $1,004). 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 June 12, 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 June 12, 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair from Washington to Oslo. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.2
Food
7.3
Crew
8.5
Comfort
7.9
Overall
8.0
Entertainment
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Boarding
8.2
Food
7.3
Crew
8.5
Comfort
7.9
Overall
8.0
Entertainment
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Boarding
8.2
Food
7.3
Crew
8.5
Comfort
7.9
Overall
8.0
Entertainment
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Boarding
8.2
Food
7.3
Crew
8.5
Comfort
7.9
Overall
8.0
Entertainment
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Boarding
8.2
Food
7.3
Crew
8.5
Comfort
7.9
Overall
8.0
Entertainment
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Boarding
8.2
Food
7.3
Crew
8.5
Comfort
7.9
Overall
8.0
Entertainment
7.9
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
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.
Traveling to a place near Washington?
Book flights to Washington if you plan to visit one of these locationsGardermoen
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Alternative routes for Washington to Oslo Gardermoen
See prices for flight routes from nearby airports that may be better suited for you.
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 June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$424 | Average$632 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$475 | Average$677 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$484 | Average$716 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$527 | Average$844 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$564 | Average$800 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$569 | Average$670 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$569 | Average$890 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$570 | Average$836 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$578 | Average$694 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$593 | Average$878 | FlexibilityNo cancel fee | On-time76% |