$404 Cheap Flights from Washington (DCA) to Oslo (OSL)

View $404 flight on Fri, Nov 28, 2025Opens in a new window

Popular airlines from Ronald Reagan Washington National Airport (DCA) to Gardermoen Airport (OSL)

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Cheap Flights from Washington to Oslo (DCA-OSL)

Prices were available within the past 7 days and start at $404 for one-way flights and $522 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

British Airways
Fri, Apr 17 - Fri, Apr 24
DCA
Washington
OSL
Oslo
$522 Roundtrip, found 4 days ago
$522
Roundtrip
found 4 days ago
Select British Airways flight, departing Fri, Apr 17 from Washington to Oslo, returning Fri, Apr 24, priced at $522 found 4 days ago
Air Canada
Wed, Sep 10 - Wed, Sep 24
DCA
Washington
OSL
Oslo
$522 Roundtrip, found 6 days ago
$522
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Sep 10 from Washington to Oslo, returning Wed, Sep 24, priced at $522 found 6 days ago
American Airlines
Sat, Feb 14 - Sun, Feb 22
DCA
Washington
OSL
Oslo
$525 Roundtrip, found 4 days ago
$525
Roundtrip
found 4 days ago
Select American Airlines flight, departing Sat, Feb 14 from Washington to Oslo, returning Sun, Feb 22, priced at $525 found 4 days ago
Air Canada
Sun, Nov 23 - Wed, Nov 26
DCA
Washington
OSL
Oslo
$527 Roundtrip, found 5 days ago
$527
Roundtrip
found 5 days ago
Select Air Canada flight, departing Sun, Nov 23 from Washington to Oslo, returning Wed, Nov 26, priced at $527 found 5 days ago
Air Canada
Sun, Nov 9 - Sun, Nov 16
DCA
Washington
OSL
Oslo
$527 Roundtrip, found 1 day ago
$527
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sun, Nov 9 from Washington to Oslo, returning Sun, Nov 16, priced at $527 found 1 day ago
Air Canada
Mon, Nov 3 - Mon, Nov 10
DCA
Washington
OSL
Oslo
$530 Roundtrip, just found
$530
Roundtrip
just found
Select Air Canada flight, departing Mon, Nov 3 from Washington to Oslo, returning Mon, Nov 10, priced at $530 just found
British Airways
Fri, Jan 23 - Wed, Jan 28
DCA
Washington
OSL
Oslo
$530 Roundtrip, found 4 days ago
$530
Roundtrip
found 4 days ago
Select British Airways flight, departing Fri, Jan 23 from Washington to Oslo, returning Wed, Jan 28, priced at $530 found 4 days ago
Air Canada
Sun, Nov 9 - Sun, Nov 16
DCA
Washington
OSL
Oslo
$534 Roundtrip, found 1 day ago
$534
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sun, Nov 9 from Washington to Oslo, returning Sun, Nov 16, priced at $534 found 1 day ago
United
Fri, Oct 31 - Tue, Nov 4
DCA
Washington
OSL
Oslo
$538 Roundtrip, found 1 day ago
$538
Roundtrip
found 1 day ago
Select United flight, departing Fri, Oct 31 from Washington to Oslo, returning Tue, Nov 4, priced at $538 found 1 day ago
Delta
Fri, Jan 23 - Wed, Jan 28
DCA
Washington
OSL
Oslo
$539 Roundtrip, found 4 days ago
$539
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Jan 23 from Washington to Oslo, returning Wed, Jan 28, priced at $539 found 4 days ago

Alternative airports near Oslo

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Gardermoen OSL. Cheapest and Closest option available. Average driving time to city center is 40 minutes. Flights from $766
OSL
Gardermoen
CheapestClosest
Average driving time to city center40 min
Flights from $766
Flights from Washington (DCA) to Oslo (OSL)
Origin airport
Ronald Reagan Washington National
Destination airport
Gardermoen
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Scandinavian Airlines, TAP Portugal, United, Virgin Atlantic
Roundtrip price
$521
Distance
3880 mi

Washington to Oslo Flights

The cheapest times to fly from Washington to Oslo

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 Washington to Oslo are during the month of April. You can find some of the cheapest flights from Washington to Oslo with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Oslo

Sunday is one of the best days to book for cheap flights from Washington to Oslo: 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 Washington to Oslo

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 Washington to Oslo in 2025. You can also book with separate airlines for your outbound and return journeys, from $404 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 Washington to Oslo 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 Washington to Oslo 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 Ronald Reagan Washington National Airport (DCA) to Gardermoen Airport (OSL) cost?
Grab a cheap one-way flight from $404 or cheap return flight from $522 from Ronald Reagan Washington National Airport (DCA) to Gardermoen Airport (OSL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Ronald Reagan Washington National Airport (DCA) to Gardermoen Airport (OSL)?
The cheapest month to fly from DCA to OSL is April, when there's less demand. Off-peak season is often when airlines offer better prices between these airports.
What is the cheapest airline that flies from Ronald Reagan Washington National Airport (DCA) to Gardermoen Airport (OSL)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest DCA to OSL flight.
How many flights per day from Ronald Reagan Washington National Airport (DCA) to Gardermoen Airport (OSL)?
There aren't any daily nonstop flights departing from Ronald Reagan Washington National Airport (DCA) to Gardermoen Airport (OSL). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from DCA to OSL?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary depending on a range of factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Ronald Reagan Washington National Airport (DCA) to Gardermoen Airport (OSL)?
To avoid potential delays on the Ronald Reagan Washington National Airport (DCA) to Gardermoen Airport (OSL) route, aim to travel before 3 PM. Later flights are 22% more likely to be canceled.**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 Ronald Reagan Washington National Airport (DCA) to Gardermoen Airport (OSL) last-minute?
Booking your flight from DCA to OSL shortly before your trip is generally more expensive. However, if you're flexible with your travel dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a DCA to OSL flight and hotel package?
You'll generally save money by booking a DCA to OSL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After selecting your ideal accommodations and flights, consider adding extras like activities, car rentals and tours.
Can I cancel or change the date of my flight from Ronald Reagan Washington National Airport (DCA) to Gardermoen Airport (OSL)?
It's generally possible to cancel or reschedule your DCA to OSL 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 allowed 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.