$391 Cheap Flights from Oslo (OSL) to Washington (DCA)

View $391 flight on Thu, Apr 8, 2027Opens in a new window

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

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Cheap Flights from Oslo to Washington (OSL-DCA)

Prices were available within the past 7 days and start at $391 for one-way flights and $685 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Finnair
Thu, Sep 17 - Sat, Sep 26
OSL
Oslo
DCA
Washington
$685 Roundtrip, found 1 day ago
$685
Roundtrip
found 1 day ago
Select Finnair flight, departing Thu, Sep 17 from Oslo to Washington, returning Sat, Sep 26, priced at $685 found 1 day ago
Finnair
Thu, Sep 17 - Sat, Sep 26
OSL
Oslo
DCA
Washington
$690 Roundtrip, found 1 day ago
$690
Roundtrip
found 1 day ago
Select Finnair flight, departing Thu, Sep 17 from Oslo to Washington, returning Sat, Sep 26, priced at $690 found 1 day ago
Finnair
Thu, Sep 17 - Sat, Sep 26
OSL
Oslo
DCA
Washington
$703 Roundtrip, found 1 day ago
$703
Roundtrip
found 1 day ago
Select Finnair flight, departing Thu, Sep 17 from Oslo to Washington, returning Sat, Sep 26, priced at $703 found 1 day ago
Finnair
Thu, Sep 17 - Sat, Sep 26
OSL
Oslo
DCA
Washington
$709 Roundtrip, found 1 day ago
$709
Roundtrip
found 1 day ago
Select Finnair flight, departing Thu, Sep 17 from Oslo to Washington, returning Sat, Sep 26, priced at $709 found 1 day ago
Finnair
Fri, Jun 5 - Tue, Jun 16
OSL
Oslo
DCA
Washington
$722 Roundtrip, found 6 days ago
$722
Roundtrip
found 6 days ago
Select Finnair flight, departing Fri, Jun 5 from Oslo to Washington, returning Tue, Jun 16, priced at $722 found 6 days ago
Air Canada
Tue, Jul 28 - Mon, Aug 10
OSL
Oslo
DCA
Washington
$796 Roundtrip, found 2 days ago
$796
Roundtrip
found 2 days ago
Select Air Canada flight, departing Tue, Jul 28 from Oslo to Washington, returning Mon, Aug 10, priced at $796 found 2 days ago
Air Canada
Thu, Jul 16 - Mon, Jul 20
OSL
Oslo
DCA
Washington
$801 Roundtrip, found 1 day ago
$801
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Jul 16 from Oslo to Washington, returning Mon, Jul 20, priced at $801 found 1 day ago
Aer Lingus
Thu, Jun 4 - Mon, Jun 8
OSL
Oslo
DCA
Washington
$878 Roundtrip, found 13 hours ago
$878
Roundtrip
found 13 hours ago
Select Aer Lingus flight, departing Thu, Jun 4 from Oslo to Washington, returning Mon, Jun 8, priced at $878 found 13 hours ago
Scandinavian Airlines
Tue, Jun 2 - Tue, Jun 9
OSL
Oslo
DCA
Washington
$987 Roundtrip, found 19 hours ago
$987
Roundtrip
found 19 hours ago
Select Scandinavian Airlines flight, departing Tue, Jun 2 from Oslo to Washington, returning Tue, Jun 9, priced at $987 found 19 hours ago
TAP Portugal
Thu, Sep 17 - Sat, Sep 26
OSL
Oslo
DCA
Washington
$1,098 Roundtrip, found 1 day ago
$1,098
Roundtrip
found 1 day ago
Select TAP Portugal flight, departing Thu, Sep 17 from Oslo to Washington, returning Sat, Sep 26, priced at $1,098 found 1 day ago

Frequently asked questions

How much does a flight from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National) cost?
You can find cheap one-way flights from $391 and cheap return flights from $685 Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National) with Expedia. One-way flights generally range between $1279 and $3852. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National)?
The cheapest month to fly from OSL to DCA is September when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National)?
Enter OSL to DCA and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National)?
British Airways, Air Canada and Virgin Atlantic are just some of the carriers that fly from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National). Use Expedia's flight search tool to compare airlines on this route and find our cheapest option for your trip. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National)?
To find a cheap flight from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
What is the earliest flight from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National)?
The earliest flight from Gardermoen Airport (OSL) to Ronald Reagan Washington National Airport (DCA) typically departs at around 5:40 AM, operated by Helvetic Airways, Swiss International Air Lines, and United. This seasonal service is available in August, giving you an early start to explore Washington, DC. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National)?
The busiest day for flights from Gardermoen (OSL) to Ronald Reagan Washington National (DCA) is a Thursday, with around 37 flights. This gives you plenty of options for your travel plans. A major airline on this route is Lufthansa.
What are the most popular departure times for flights from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National)?
For flights from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National), the most popular departure times are in the early morning, from 6am to 9am. This accounts for about 49% of total traffic. Airlines such as KLM and American Airlines offer flights during this window. Many travelers prefer this timing to arrive in Washington, DC with a full day ahead of them.
How long does it take to fly from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National)?
A flight from OSL to DCA with a layover takes around 16 hours, with the route covering approximately 3,881 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National)?
Business class is available on flights from OSL to DCA. Airlines that offer business class service on this route include:

  • SAS
  • Lufthansa
  • Finnair
  • Icelandair

How do I earn miles on a Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National) flight with Expedia?
It's easy to earn miles on a Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Washington from Gardermoen (OSL)?
From Gardermoen (OSL), you can fly into Ronald Reagan Washington National (DCA) and Washington Dulles Intl. (IAD) in Washington. Some flights may connect through major hubs like Schiphol (AMS), Heathrow (LHR), Vantaa (HEL) before reaching Washington. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National) at the last minute?
Typically, booking a last minute flight from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National) flight and hotel package?
Securing a Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National) Washington Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National)?
If you booked your Oslo (OSL-Gardermoen) to Washington, DC (DCA-Ronald Reagan Washington National) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Gardermoen
Destination airport
Ronald Reagan Washington National
Airlines serving
British Airways, Finnair, Scandinavian Airlines
Roundtrip price
$684
Distance
3880 mi

Book with confidence

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 September. 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 2026. You can also book with separate airlines for your outbound and return journeys, from $391 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.

 

Oslo to Washington Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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