HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Oslo

$426+ Cheap flights from Reagan-National (DCA) to Oslo

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — OSL
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Reagan-National to Oslo with Cheapflights

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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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 Reagan-National to Oslo

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to Oslo (OS1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 29, 2025.

Round-trip from

$559
(Gotogate)

One-way from

$426
(Priceline)

Popular in

July

Cheapest in

December

Average price

$584
From Washington, D.C. Reagan-National to Oslo
Search Deals
One-way flight from Washington, D.C. Reagan-National to Oslo
Search Deals
Highest demand for flights based on searches. 30% potential increase in price ($294 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Reagan-National to Oslo

Cheapest flights from Reagan-National to Oslo
Explore the most affordable flight options available from Reagan-National to Oslo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This Gotogate deal was found by Cheapflights users on 4/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/116:00 amDCA - OSL
2 stops25h 05mAir Canada
Tue 5/276:35 amOSL - DCA
2 stops15h 14mAir Canada
Deal found 4/29$559
This Delta deal was found by Cheapflights users on 4/29. 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 8/205:00 pmDCA - OSL
2 stops14h 45mDelta
Thu 8/286:00 amOSL - DCA
2 stops18h 12mDelta
Deal found 4/29$568
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Tue 11/2511:00 amDCA - OSL
2 stops21h 55mUnited Airlines
Mon 12/11:35 pmOSL - DCA
2 stops31h 44mUnited Airlines
Deal found 4/28$589
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Thu 7/317:06 pmDCA - OSL
2 stops15h 29mAmerican Airlines
Thu 8/141:10 pmOSL - DCA
2 stops15h 05mAmerican Airlines
Deal found 4/29$598
This British Airways deal was found by Cheapflights users on 4/28. 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.
Mon 5/1211:40 amDCA - OSL
2 stops16h 45mBritish Airways
Sat 5/248:20 amOSL - DCA
2 stops19h 55mBritish Airways
Deal found 4/28$614
This Gurufare deal was found by Cheapflights users on 4/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2211:00 amDCA - OSL
1 stop13h 50mScandinavian Airlines
Mon 7/281:10 pmOSL - DCA
1 stop16h 26mScandinavian Airlines
Deal found 4/29$664
This KAYAK deal was found by Cheapflights users on 4/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/201:30 pmDCA - TRF
2 stops18h 50mScandinavian Airlines
Thu 8/282:55 pmTRF - DCA
2 stops38h 33mScandinavian Airlines
Deal found 4/29$751
This Mytrip deal was found by Cheapflights users on 4/29. 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.
Thu 5/2211:00 amDCA - OSL
2 stops22h 35mMultiple Airlines
Tue 5/272:45 pmOSL - DCA
3 stops34h 58mMultiple Airlines
Deal found 4/29$869
This oojo deal was found by Cheapflights users on 4/29. 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 7/228:00 amDCA - OSL
2 stops25h 25mIcelandair
Mon 7/284:30 pmOSL - DCA
2 stops32h 29mIcelandair
Deal found 4/29$883

Cheapflights Fare Finder

Customize your flight search to find flights from Reagan-National to Oslo 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 April 29, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Oslo that are best for you.

Fly from

Reagan-National

Fly to

Oslo

Route

Depart

Return

Price

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Sun 5/11

6:00 am-1:05 pm

2 stops25h 05m

Oslo Gardermoen

Tue 5/27

6:35 am-3:49 pm

2 stops15h 14m

$559

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Mon 5/12

11:40 am-10:25 am

2 stops16h 45m

Oslo Gardermoen

Sat 5/24

8:20 am-10:15 pm

2 stops19h 55m

$614

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Sun 5/11

1:15 pm-10:50 am

2 stops15h 35m

Oslo Gardermoen

Sat 5/17

9:50 am-3:49 pm

2 stops35h 59m

$625

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Fri 5/9

1:15 pm-11:05 am

2 stops15h 50m

Oslo Gardermoen

Mon 5/19

6:30 am-3:59 pm

2 stops15h 29m

$631

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Tue 7/22

11:00 am-6:50 am

1 stop13h 50m

Oslo Gardermoen

Mon 7/28

1:10 pm-11:36 pm

1 stop16h 26m

$664

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Tue 7/8

7:06 pm-4:35 pm

2 stops15h 29m

Oslo Gardermoen

Tue 7/22

1:10 pm-11:11 pm

2 stops16h 01m

$741

Washington, D.C.Oslo

DCA - TRF

DCATRF

Washington, D.C. Reagan-National

Wed 8/20

1:30 pm-2:20 pm

2 stops18h 50m

Oslo Sandefjord

Thu 8/28

2:55 pm-11:28 pm

2 stops38h 33m

$751

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Thu 5/22

6:00 am-3:35 pm

3 stops27h 35m

Oslo Gardermoen

Tue 5/27

2:45 pm-6:03 pm

3 stops33h 18m

$869

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Tue 7/22

8:00 am-3:25 pm

2 stops25h 25m

Oslo Gardermoen

Mon 7/28

4:30 pm-6:59 pm

2 stops32h 29m

$883

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Tue 7/8

9:40 am-6:05 pm

2 stops26h 25m

$486

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 18 results
1
2

Best time to book a flight from Reagan-National to Oslo

Have a flexible travel schedule? Discover the best time to fly to Oslo from Reagan-National 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, D.C. Reagan-National Airport to Oslo

What is the cheapest time of day to fly from DCA to OSL?

Find hourly flight availability from Reagan-National to Oslo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

When flying from Washington, D.C. Reagan-National Airport to Oslo, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 40% versus a flight at noon.

Rainfall in Oslo by month

Plan your trip to Oslo by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Oslo 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 when rainfall is around 1.6 in.

Temperature in Oslo by month

Plan your trip to Oslo by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Oslo, 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

Get insights into the airlines that provide service to Oslo. 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. Reviews last updated April 29, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Oslo, such as Delta, Finnair and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Scandinavian Airlines
7.3
Good
1,349 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,936 reviews

Entertainment

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Oslo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Washington, D.C. Reagan-National Airport to Oslo round-trip?

    Air Canada, at $559, was found to be the cheapest airline from Washington, D.C. Reagan-National Airport to Oslo.Alternate airlines to your destination round-trip include Delta and American Airlines. These flights start at 17% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to Oslo one-way?

    $426 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Delta and Scandinavian Airlines, with prices starting from $427 and $563, respectively.

  • Can I find deals for flights from Reagan-National to Oslo that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Oslo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Oslo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Oslo.

  • Can I find deals for business class flights from Reagan-National to Oslo?

    Yes. Cheapflights offers flight deals from Reagan-National to Oslo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to Oslo?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to Oslo (average of $567). Flying from Washington, D.C. Reagan-National Airport to Oslo in June is currently the most expensive (average of $1,059). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Reagan-National to Oslo

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Oslo Gardermoen flights
Reagan-National to Oslo Gardermoen flights
Baltimore to Oslo Gardermoen flights
Dulles Intl to Sandefjord flights
Dulles Intl to Bergen flights
Baltimore to Bergen flights
Reagan-National to Bergen flights
Baltimore to Sandefjord flights
Dulles Intl to Longyearbyen flights
Reagan-National to Stavanger flights
Baltimore to Stavanger flights
Baltimore to Tromsø flights
Dulles Intl to Stavanger flights
Dulles Intl to Tromsø flights
Baltimore to Longyearbyen flights
Baltimore to Trondheim flights
Baltimore to Ålesund flights
Dulles Intl to Bodø flights
Dulles Intl to Ålesund flights
Reagan-National to Tromsø flights
Dulles Intl to Trondheim flights
Baltimore to Kirkenes flights
Dulles Intl to Kirkenes flights
Dulles Intl to Kristiansand flights
Dulles Intl to Volda flights
Baltimore to Kristiansand flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.