$492 Cheap Flights from Oslo (OSL) to Washington (IAD)

View $492 flight on Fri, Aug 29, 2025Opens in a new window

Popular airlines from Gardermoen Airport (OSL) to Washington Dulles Intl. Airport (IAD)

Cheap Flights from Oslo to Washington (OSL-IAD)

Prices were available within the past 7 days and start at $492 for one-way flights and $389 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Mon, Oct 6 - Mon, Oct 13
OSL
Oslo
IAD
Washington
$389 Roundtrip, found 2 days ago
$389
Roundtrip
found 2 days ago
Select Scandinavian Airlines flight, departing Mon, Oct 6 from Oslo to Washington, returning Mon, Oct 13, priced at $389 found 2 days ago
Scandinavian Airlines
Thu, Oct 9 - Sun, Oct 12
TRF
Sandefjord
IAD
Washington
$455 Roundtrip, found 2 days ago
$455
Roundtrip
found 2 days ago
Select Scandinavian Airlines flight, departing Thu, Oct 9 from Sandefjord to Washington, returning Sun, Oct 12, priced at $455 found 2 days ago
TAP Portugal
Fri, Aug 29 - Thu, Sep 11
OSL
Oslo
IAD
Washington
$457 Roundtrip, found 6 days ago
$457
Roundtrip
found 6 days ago
Select TAP Portugal flight, departing Fri, Aug 29 from Oslo to Washington, returning Thu, Sep 11, priced at $457 found 6 days ago
TAP Portugal
Tue, Aug 26 - Fri, Sep 5
OSL
Oslo
IAD
Washington
$458 Roundtrip, found 3 days ago
$458
Roundtrip
found 3 days ago
Select TAP Portugal flight, departing Tue, Aug 26 from Oslo to Washington, returning Fri, Sep 5, priced at $458 found 3 days ago
TAP Portugal
Tue, Aug 26 - Fri, Sep 5
OSL
Oslo
IAD
Washington
$463 Roundtrip, found 3 days ago
$463
Roundtrip
found 3 days ago
Select TAP Portugal flight, departing Tue, Aug 26 from Oslo to Washington, returning Fri, Sep 5, priced at $463 found 3 days ago
British Airways
Wed, Apr 15 - Wed, Apr 29
OSL
Oslo
IAD
Washington
$464 Roundtrip, found 3 days ago
$464
Roundtrip
found 3 days ago
Select British Airways flight, departing Wed, Apr 15 from Oslo to Washington, returning Wed, Apr 29, priced at $464 found 3 days ago
Icelandair
Mon, Oct 6 - Mon, Oct 13
OSL
Oslo
IAD
Washington
$465 Roundtrip, found 2 days ago
$465
Roundtrip
found 2 days ago
Select Icelandair flight, departing Mon, Oct 6 from Oslo to Washington, returning Mon, Oct 13, priced at $465 found 2 days ago
Scandinavian Airlines
Mon, Oct 6 - Mon, Oct 13
OSL
Oslo
IAD
Washington
$469 Roundtrip, found 2 days ago
$469
Roundtrip
found 2 days ago
Select Scandinavian Airlines flight, departing Mon, Oct 6 from Oslo to Washington, returning Mon, Oct 13, priced at $469 found 2 days ago
Lufthansa
Wed, Sep 17 - Sun, Sep 21
OSL
Oslo
IAD
Washington
$496 Roundtrip, found 11 hours ago
$496
Roundtrip
found 11 hours ago
Select Lufthansa flight, departing Wed, Sep 17 from Oslo to Washington, returning Sun, Sep 21, priced at $496 found 11 hours ago
Swiss International Air Lines
Mon, Oct 6 - Mon, Oct 13
OSL
Oslo
IAD
Washington
$500 Roundtrip, found 2 days ago
$500
Roundtrip
found 2 days ago
Select Swiss International Air Lines flight, departing Mon, Oct 6 from Oslo to Washington, returning Mon, Oct 13, priced at $500 found 2 days ago
Flights from Oslo (OSL) to Washington (IAD)
Origin airport
Gardermoen
Destination airport
Washington Dulles Intl.
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Roundtrip price
$389
Distance
3887 mi

Oslo to Washington Flights

The cheapest times to fly from Oslo to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Oslo to Washington are during the month of October. You can find some of the cheapest flights from Oslo to Washington with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Oslo to Washington

Sunday is one of the best days to book for cheap flights from Oslo to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Oslo to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Oslo to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $492 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Oslo to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Oslo to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Gardermoen Airport (OSL) to Washington Dulles Intl. Airport (IAD) cost?
Discover the latest flight deals from OSL to IAD by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from OSL to IAD?
The cheapest flights from OSL to IAD are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from OSL to IAD?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from OSL to IAD. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Gardermoen Airport (OSL) to Washington Dulles Intl. Airport (IAD)?
There aren't any daily nonstop flights available from Gardermoen Airport (OSL) to Washington Dulles Intl. Airport (IAD). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from OSL to IAD?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Gardermoen Airport (OSL) to Washington Dulles Intl. Airport (IAD)?
To avoid potential delays on the Gardermoen Airport (OSL) to Washington Dulles Intl. Airport (IAD) route, fly before 3 PM. Later flights have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Gardermoen Airport (OSL) to Washington Dulles Intl. Airport (IAD) last-minute?
Last-minute bookings from OSL to IAD are generally more expensive. For the cheapest rates, start searching for flights well in advance. That being said, if you're flexible with your travel plans, it's possible to score a cheap fare right before your trip.
Is it cheaper to book an OSL to IAD flight and hotel package?
Compared with arranging flights and hotels separately, booking an OSL to IAD flight and hotel package with Expedia could result in significant savings. Better still, managing everything in one place will take the hassle out of travel planning. Just secure your flights and choose from our wide range of stays, then tailor your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from Gardermoen Airport (OSL) to Washington Dulles Intl. Airport (IAD)?
Typically, it's possible to reschedule or cancel your OSL to IAD flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.