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

American Airlines, at $518, was found to be the cheapest airline from Washington, D.C. Reagan-National Airport to Oslo.Alternate airlines to your destination round-trip include Air Canada and Delta. These flights start at 19% 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?

$404 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 United Airlines, with prices starting from $407 and $454, respectively.

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 $1,004). 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 day to fly from Washington, D.C. Reagan-National Airport to Oslo?

Travelers seeking maximum savings on their Washington, D.C. Reagan-National Airport to Oslo flight should consider departing on Thursday mornings when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

What is the cheapest day to fly round-trip from Washington, D.C. Reagan-National Airport to Oslo?

Travelers have found that booking a Wednesday departure is the best way to save up to 68% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

How far in advance should I book a flight from Washington, D.C. Reagan-National Airport to Oslo?

Travelers have found it’s best to book a flight 60 days in advance to save up to 18% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 60 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Washington, D.C. Reagan-National Airport to Oslo 1-2 weeks in advance for as low as $467, or $539 for flights within the next 24 hours.

What is the cheapest month to fly from Washington, D.C. Reagan-National Airport to Oslo?

The best pricing can be found in the month of February. Prices to Oslo from Washington, D.C. Reagan-National Airport average $593. You can even find prices in February for less than $593, as users have found deals to Oslo from as low as $194. The month of December appears to be one of the more expensive times to travel to Oslo from Washington, D.C. Reagan-National Airport. Flying in the targeted month can save you up to 30%.

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.

$404+ Flights from Washington, D.C. Reagan-National Airport to Oslo

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Cheap flight deals from Reagan-National to Oslo

Round-trip from	$518 (American Airlines)
One-way from	$404 (FlightHub)
Popular in	August
Cheapest in	December
Average price	$742

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. 25% potential increase in price ($215 potential increase over avg. RT price).

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Cheapest flight prices on average. 11% potential price decrease ($68 potential savings vs. average RT price).

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Average for round-trip flights in June 2025

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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 juin 12, 2025.

ven. 11/285:58 pmDCA - OSL

2 stops16h 27mAmerican Airlines

lun. 12/812:25 pmOSL - DCA

2 stops16h 13mAmerican Airlines

Deal found 6/10

$518

sam. 11/2911:00 amDCA - OSL

2 stops19h 10mAir Canada

sam. 12/69:35 amOSL - DCA

2 stops16h 22mAir Canada

Deal found 6/10

$532

mar. 9/911:00 amDCA - OSL

2 stops19h 15mMultiple Airlines

mer. 9/246:45 amOSL - DCA

2 stops15h 06mMultiple Airlines

Deal found 6/11

$538

mer. 8/68:46 pmDCA - OSL

2 stops16h 04mDelta

mar. 8/1912:45 pmOSL - DCA

2 stops17h 08mDelta

Deal found 6/10

$543

lun. 8/119:40 amDCA - OSL

2 stops20h 35mUnited Airlines

lun. 8/186:35 amOSL - DCA

2 stops20h 27mUnited Airlines

Deal found 6/10

$572

lun. 12/18:00 pmDCA - OSL

2 stops16h 35mBritish Airways

jeu. 12/1111:40 amOSL - DCA

2 stops16h 58mBritish Airways

Deal found 6/12

$599

lun. 10/136:05 amDCA - OSL

1 stop18h 45mScandinavian Airlines

lun. 10/201:10 pmOSL - DCA

1 stop15h 09mScandinavian Airlines

Deal found 6/11

$607

mar. 11/2511:00 amDCA - TRF

2 stops21h 05mScandinavian Airlines

lun. 12/12:35 pmTRF - DCA

2 stops37h 18mScandinavian Airlines

Deal found 6/11

$689

mar. 8/57:06 pmDCA - OSL

2 stops18h 39mFinnair

dim. 8/178:45 pmOSL - DCA

2 stops32h 33mFinnair

Deal found 6/10

$784

ven. 7/251:25 pmDCA - OSL

2 stops13h 20mKLM

ven. 8/17:05 amOSL - DCA

2 stops15h 28mKLM

Deal found 6/10

$811

Best flights from Reagan-National to Oslo
Discover carefully curated flight deals from Reagan-National to Oslo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated juin 12, 2025.

ven. 11/285:58 pmDCA - OSL

2 stops16h 27mAmerican Airlines

lun. 12/812:25 pmOSL - DCA

2 stops16h 13mAmerican Airlines

Deal found 6/10

$518

sam. 11/2911:00 amDCA - OSL

2 stops19h 10mAir Canada

sam. 12/69:35 amOSL - DCA

2 stops16h 22mAir Canada

Deal found 6/10

$532

mar. 9/911:00 amDCA - OSL

2 stops19h 15mMultiple Airlines

mer. 9/246:45 amOSL - DCA

2 stops15h 06mMultiple Airlines

Deal found 6/11

$538

mer. 8/68:46 pmDCA - OSL

2 stops16h 04mDelta

mar. 8/1912:45 pmOSL - DCA

2 stops17h 08mDelta

Deal found 6/10

$543

lun. 8/119:40 amDCA - OSL

2 stops20h 35mUnited Airlines

lun. 8/186:35 amOSL - DCA

2 stops20h 27mUnited Airlines

Deal found 6/10

$572

lun. 12/18:00 pmDCA - OSL

2 stops16h 35mBritish Airways

jeu. 12/1111:40 amOSL - DCA

2 stops16h 58mBritish Airways

Deal found 6/12

$599

lun. 10/136:05 amDCA - OSL

1 stop18h 45mScandinavian Airlines

lun. 10/201:10 pmOSL - DCA

1 stop15h 09mScandinavian Airlines

Deal found 6/11

$607

mar. 8/57:06 pmDCA - OSL

2 stops18h 39mFinnair

dim. 8/178:45 pmOSL - DCA

2 stops32h 33mFinnair

Deal found 6/10

$784

ven. 7/251:25 pmDCA - OSL

2 stops13h 20mKLM

ven. 8/17:05 amOSL - DCA

2 stops15h 28mKLM

Deal found 6/10

$811

lun. 10/136:55 pmDCA - OSL

2 stops35h 40mIcelandair

lun. 10/204:45 pmOSL - DCA

2 stops23h 01mIcelandair

Deal found 6/11

$940

mar. 11/2511:00 amDCA - TRF

2 stops21h 05mScandinavian Airlines

lun. 12/12:35 pmTRF - DCA

2 stops37h 18mScandinavian Airlines

Deal found 6/11

$689

Last-minute flights from Reagan-National to Oslo
Discover last-minute flight deals from Reagan-National to Oslo. Data last updated juin 12, 2025 and is based on user searches.

mar. 6/176:30 pmDCA - OSL

2 stops15h 50mDelta

jeu. 7/36:00 amOSL - DCA

2 stops16h 12mDelta

Deal found 6/11

$865

mar. 6/171:15 pmDCA - OSL

2 stops20h 25mUnited Airlines

ven. 7/46:45 amOSL - DCA

2 stops15h 43mUnited Airlines

Deal found 6/10

$975

mar. 6/172:54 pmDCA - OSL

2 stops26h 31mIberia

lun. 7/75:05 pmOSL - DCA

2 stops36h 06mIberia

Deal found 6/11

$1,387

mar. 6/172:35 pmDCA - OSL

2 stops26h 50mBritish Airways

lun. 7/78:35 pmOSL - DCA

2 stops32h 36mBritish Airways

Deal found 6/11

$1,467

mer. 6/189:40 amDCA - OSL

2 stops20h 20mTAP AIR PORTUGAL

mar. 7/86:50 pmOSL - DCA

2 stops43h 32mTAP AIR PORTUGAL

Deal found 6/11

$1,366

sam. 6/218:40 pmDCA - OSL

3 stops29h 40mMultiple Airlines

dim. 6/297:40 pmOSL - DCA

3 stops46h 23mMultiple Airlines

Deal found 6/10

$1,139

dim. 6/226:06 amDCA - OSL

1 stop18h 44mScandinavian Airlines

mar. 7/158:55 pmOSL - DCA

2 stops31h 27mScandinavian Airlines

Deal found 6/10

$998

mer. 6/258:15 amDCA - OSL

2 stops22h 20mIcelandair

mer. 7/94:30 pmOSL - DCA

2 stops23h 11mIcelandair

Deal found 6/11

$989

ven. 7/46:06 amDCA - OSL

1 stop18h 44mMultiple Airlines

mer. 7/309:55 amOSL - DCA

2 stops15h 47mMultiple Airlines

Deal found 6/10

$734

jeu. 7/104:30 pmDCA - OSL

2 stops17h 10mAir Canada

jeu. 7/176:35 amOSL - DCA

2 stops15h 13mAir Canada

Deal found 6/10

$928

mar. 7/156:05 amDCA - OSL

1 stop18h 45mScandinavian Airlines

mar. 8/51:10 pmOSL - DCA

1 stop16h 25mScandinavian Airlines

Deal found 6/11

$636

mar. 7/1512:10 pmDCA - TRF

2 stops18h 25mScandinavian Airlines

mar. 8/51:05 pmTRF - DCA

2 stops39h 17mScandinavian Airlines

Deal found 6/11

$833

One-way flights from Reagan-National to Oslo
Search for one-way flight options from Reagan-National to Oslo. Find affordable one-way fares based on user searches. Data last updated juin 12, 2025.

mer. 9/39:40 amDCA - OSL

2 stops21h 25mAir Canada

Deal found 6/9

$404

jeu. 8/73:40 pmDCA - OSL

2 stops14h 10mDelta

Deal found 6/10

$407

ven. 8/156:50 pmDCA - OSL

3 stops31h 10mMultiple Airlines

Deal found 6/11

$422

ven. 7/183:05 pmDCA - OSL

2 stops20h 55mUnited Airlines

Deal found 6/11

$454

mar. 6/178:15 amDCA - OSL

2 stops22h 20mIcelandair

Deal found 6/10

$522

sam. 8/23:59 pmDCA - OSL

2 stops18h 26mBritish Airways

Deal found 6/11

$546

lun. 8/187:01 pmDCA - OSL

3 stops18h 14mTAP AIR PORTUGAL

Deal found 6/10

$622

ven. 7/186:05 amDCA - OSL

1 stop18h 45mScandinavian Airlines

Deal found 6/10

$722

lun. 8/181:25 pmDCA - TRF

3 stops16h 25mMultiple Airlines

Deal found 6/10

$763

lun. 8/1812:15 pmDCA - TRF

2 stops20h 05mScandinavian Airlines

Deal found 6/10

$2,174

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

ven. 11/28

5:58 pm-4:25 pm

2 stops16h 27m

Oslo Gardermoen

lun. 12/8

12:25 pm-10:38 pm

2 stops16h 13m

$518

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

sam. 11/29

11:00 am-12:10 pm

2 stops19h 10m

Oslo Gardermoen

sam. 12/6

9:35 am-7:57 pm

2 stops16h 22m

$532

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

mar. 9/9

11:00 am-12:15 pm

2 stops19h 15m

Oslo Gardermoen

mer. 9/24

6:45 am-3:51 pm

2 stops15h 06m

$538

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

mer. 8/6

8:46 pm-6:50 pm

2 stops16h 04m

Oslo Gardermoen

mar. 8/19

12:45 pm-11:53 pm

2 stops17h 08m

$543

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

lun. 8/11

9:40 am-12:15 pm

2 stops20h 35m

Oslo Gardermoen

lun. 8/18

6:35 am-9:02 pm

2 stops20h 27m

$572

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

lun. 12/1

8:00 pm-6:35 pm

2 stops16h 35m

Oslo Gardermoen

jeu. 12/11

11:40 am-10:38 pm

2 stops16h 58m

$599

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

lun. 10/13

6:05 am-6:50 am

1 stop18h 45m

Oslo Gardermoen

lun. 10/20

1:10 pm-10:19 pm

1 stop15h 09m

$607

Washington, D.C.Oslo

DCA - TRF

DCATRF

Washington, D.C. Reagan-National

mar. 11/25

11:00 am-2:05 pm

2 stops21h 05m

Oslo Sandefjord

lun. 12/1

2:35 pm-9:53 pm

2 stops37h 18m

$689

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

mar. 8/5

7:06 pm-7:45 pm

2 stops18h 39m

Oslo Gardermoen

dim. 8/17

8:45 pm-11:18 pm

2 stops32h 33m

$784

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

ven. 7/25

1:25 pm-8:45 am

2 stops13h 20m

Oslo Gardermoen

ven. 8/1

7:05 am-4:33 pm

2 stops15h 28m

$811

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 21 results

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?

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

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

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

Read through reviews of airlines operating flights from Washington, D.C. to Oslo, such as Delta, KLM and Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,950 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

KLM

7.8

Good

1,358 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Finnair

7.6

Good

1,290 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,790 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Scandinavian Airlines

7.3

Good

1,387 reviews

Delta

8.0

Very good

7,950 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from Washington, D.C. Reagan-National Airport to Oslo round-trip?
American Airlines, at $518, was found to be the cheapest airline from Washington, D.C. Reagan-National Airport to Oslo.Alternate airlines to your destination round-trip include Air Canada and Delta. These flights start at 19% 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?
$404 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 United Airlines, with prices starting from $407 and $454, 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 $1,004). 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

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$404+ 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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Reagan-National to Oslo with Cheapflights

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Cheap flight deals from Reagan-National to Oslo

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Find flight deals from Reagan-National to Oslo

Cheapest flights from Reagan-National to OsloExplore 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 juin 12, 2025.

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 juin 12, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Oslo that are best for you.

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.

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 juin 12, 2025.

Rainfall in Oslo by month

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

Temperature in Oslo by month

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

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 juin 12, 2025.

Read through reviews of airlines operating flights from Washington, D.C. to Oslo, such as Delta, KLM and Finnair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

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

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

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

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.

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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 juin 12, 2025.