$287+ 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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSL
Aug 9 — Aug 161
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 August 4, 2025.
Round-trip from | $431 (oojo) |
|---|---|
One-way from | $287 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $607 |
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 August 4, 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 August 4, 2025.
This oojo deal was found by Cheapflights users on 8/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/207:00 pmSEA - OSL
1 stop11h 25mIcelandair
Wed 9/34:30 pmOSL - SEA
1 stop13h 10mIcelandair
Deal found 8/3![Icelandair logo]()
$431
This oojo deal was found by Cheapflights users on 8/4. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/13:45 pmPDX - OSL
1 stop11h 50mIcelandair
Sun 11/161:05 pmOSL - PDX
1 stop12h 55mIcelandair
Deal found 8/4![Icelandair logo]()
$466
This Ovago deal was found by Cheapflights users on 8/3. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/36:50 pmSEA - OSL
1 stop18h 50mBritish Airways
Tue 11/1811:45 amOSL - SEA
1 stop14h 10mBritish Airways
Deal found 8/3![British Airways logo]()
$470
This Delta deal was found by Cheapflights users on 8/3. 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.
Wed 11/51:55 pmSEA - OSL
1 stop17h 25mDelta
Fri 11/216:25 amOSL - SEA
1 stop15h 50mDelta
Deal found 8/3![Delta logo]()
$492
This Air France deal was found by Cheapflights users on 8/2. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/116:40 pmSEA - OSL
1 stop18h 50mMultiple Airlines
Mon 8/257:15 pmOSL - SEA
1 stop25h 20mMultiple Airlines
Deal found 8/2![Multiple Airlines logo]()
$493
This Iberia deal was found by Cheapflights users on 8/3. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/59:00 amSEA - OSL
2 stops20h 20mIberia
Wed 11/193:00 pmOSL - SEA
2 stops41h 18mIberia
Deal found 8/3![Iberia logo]()
$499
This oojo deal was found by Cheapflights users on 8/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/244:20 pmSEA - OSL
1 stop12h 50mScandinavian Airlines
Sat 9/278:55 pmOSL - SEA
1 stop26h 05mScandinavian Airlines
Deal found 8/3![Scandinavian Airlines logo]()
$500
This KLM deal was found by Cheapflights users on 8/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/115:40 pmSEA - OSL
1 stop15h 55mKLM
Mon 8/257:15 pmOSL - SEA
1 stop25h 20mKLM
Deal found 8/3![KLM logo]()
$506
This Air France deal was found by Cheapflights users on 8/3. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/411:10 amPDX - OSL
2 stops18h 35mMultiple Airlines
Mon 11/176:30 amOSL - PDX
1 stop13h 55mMultiple Airlines
Deal found 8/3![Multiple Airlines logo]()
$573
This Delta deal was found by Cheapflights users on 8/3. 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.
Mon 11/311:10 amPDX - OSL
2 stops20h 10mDelta
Mon 11/176:30 amOSL - PDX
1 stop13h 55mDelta
Deal found 8/3![Delta logo]()
$574
This KLM deal was found by Cheapflights users on 8/3. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/21:25 pmPDX - OSL
1 stop22h 35mKLM
Mon 11/176:30 amOSL - PDX
1 stop13h 55mKLM
Deal found 8/3![KLM logo]()
$581
This FlightHub deal was found by Cheapflights users on 8/2. 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 9/2212:40 pmPDX - OSL
2 stops20h 10mScandinavian Airlines
Tue 9/306:00 pmOSL - PDX
2 stops37h 39mScandinavian Airlines
Deal found 8/2![Scandinavian Airlines logo]()
$597
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 August 4, 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
Wed 8/20
7:00 pm-3:25 pm
1 stop11h 25m
Oslo Gardermoen
Wed 9/3
4:30 pm-8:40 pm
1 stop13h 10m
$431
PortlandOslo
PDX - OSL
PDXOSL
Portland
Sat 11/1
3:45 pm-11:35 am
1 stop11h 50m
Oslo Gardermoen
Sun 11/16
1:05 pm-5:00 pm
1 stop12h 55m
$466
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Tue 10/28
2:25 pm-10:40 pm
1 stop24h 15m
Oslo Gardermoen
Fri 11/7
7:10 am-4:55 pm
1 stop18h 45m
$470
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Mon 8/11
6:40 pm-10:30 pm
1 stop18h 50m
Oslo Gardermoen
Fri 8/22
6:05 am-11:15 am
1 stop14h 10m
$492
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Mon 8/11
6:40 pm-10:30 pm
1 stop18h 50m
Oslo Gardermoen
Mon 8/25
7:15 pm-11:35 am
1 stop25h 20m
$493
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Wed 9/24
4:20 pm-2:10 pm
1 stop12h 50m
Oslo Gardermoen
Sat 9/27
8:55 pm-2:00 pm
1 stop26h 05m
$500
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Mon 8/11
5:40 pm-6:35 pm
1 stop15h 55m
Oslo Gardermoen
Mon 8/25
7:15 pm-11:35 am
1 stop25h 20m
$506
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Mon 8/11
5:40 pm-4:20 pm
1 stop13h 40m
Oslo Gardermoen
Wed 8/20
6:30 am-4:51 pm
2 stops19h 21m
$516
SeattleOslo
SEA - OSL
SEAOSL
Seattle/Tacoma Intl
Tue 8/26
7:44 am-10:35 am
2 stops17h 51m
Oslo Gardermoen
Tue 9/2
7:45 am-7:16 pm
2 stops20h 31m
$517
PortlandOslo
PDX - OSL
PDXOSL
Portland
Tue 11/4
11:10 am-2:45 pm
2 stops18h 35m
Oslo Gardermoen
Mon 11/17
6:30 am-11:25 am
1 stop13h 55m
$573
Showing 1-10 of 38 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 $1,009). 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 August 4, 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.
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 August 4, 2025.
See what other customers who have flown with Delta, KLM, and Finnair from Washington to Oslo Gardermoen Airport have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.2
Comfort
7.9
Entertainment
7.9
Food
7.3
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Boarding
8.2
Comfort
7.9
Entertainment
7.9
Food
7.3
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Boarding
8.2
Comfort
7.9
Entertainment
7.9
Food
7.3
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Boarding
8.2
Comfort
7.9
Entertainment
7.9
Food
7.3
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Boarding
8.2
Comfort
7.9
Entertainment
7.9
Food
7.3
Crew
8.5
Overall
8.0
Reviews
1 / 20
10.0
ExcellentKim,May 2025
PIH - SLC
Boarding
8.2
Comfort
7.9
Entertainment
7.9
Food
7.3
Crew
8.5
Overall
8.0
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 Oslo Gardermoen Airport?
Book flights to Oslo Gardermoen Airport if you plan to visit one of these locationsGardermoen
Browse thousands of different options on Cheapflights for your next trip
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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 August 4, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$417 | Average$591 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$475 | Average$669 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$484 | Average$723 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$494 | Average$726 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$517 | Average$840 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$551 | Average$867 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$552 | Average$621 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$573 | Average$885 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$578 | Average$731 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$584 | Average$952 | FlexibilityNo cancel fee | On-time75% |