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

British Airways, at $513, was found to be the cheapest airline from Washington, D.C. Reagan-National Airport to Oslo.Alternate airlines to your destination round-trip include American Airlines and United Airlines. These flights start at 20% 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?

$384 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $408 and $411, 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 $1,010). 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.

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.

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).

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 64% 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 $598. You can even find prices in February for less than $598, as users have found deals to Oslo from as low as $192. 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 32%.

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.

$373+ 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	$495 (Mytrip)
One-way from	$373 (Mytrip)
Popular in	August
Cheapest in	December
Average price	$728

From Washington, D.C. Reagan-National to Oslo

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One-way flight from Washington, D.C. Reagan-National to Oslo

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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 July 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 July 29, 2025.

Mon 12/111:05 amDCA - OSL

2 stops19h 05mAir Canada

Mon 12/86:45 amOSL - DCA

2 stops14h 46mAir Canada

Deal found 7/27

$492

Wed 9/106:00 amDCA - OSL

2 stops25h 05mMultiple Airlines

Wed 9/175:40 amOSL - DCA

2 stops22h 11mMultiple Airlines

Deal found 7/27

$495

Wed 9/103:35 pmDCA - OSL

2 stops13h 05mBritish Airways

Wed 9/247:40 amOSL - DCA

2 stops16h 59mBritish Airways

Deal found 7/28

$513

Tue 10/142:55 pmDCA - OSL

2 stops13h 40mAmerican Airlines

Tue 10/211:10 pmOSL - DCA

2 stops15h 47mAmerican Airlines

Deal found 7/29

$525

Sun 8/178:00 pmDCA - OSL

2 stops16h 00mUnited Airlines

Mon 8/257:15 amOSL - DCA

2 stops17h 48mUnited Airlines

Deal found 7/26

$529

Tue 10/146:05 amDCA - OSL

1 stop18h 45mScandinavian Airlines

Tue 10/211:10 pmOSL - DCA

1 stop15h 54mScandinavian Airlines

Deal found 7/29

$538

Fri 8/223:40 pmDCA - OSL

2 stops14h 10mDelta

Wed 9/36:00 amOSL - DCA

2 stops18h 14mDelta

Deal found 7/27

$578

Tue 12/212:00 pmDCA - TRF

2 stops20h 05mScandinavian Airlines

Tue 12/92:35 pmTRF - DCA

2 stops38h 29mScandinavian Airlines

Deal found 7/29

$685

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 July 29, 2025.

Wed 9/106:00 amDCA - OSL

2 stops25h 05mMultiple Airlines

Wed 9/175:40 amOSL - DCA

2 stops22h 11mMultiple Airlines

Deal found 7/27

$495

Wed 9/103:35 pmDCA - OSL

2 stops13h 05mBritish Airways

Wed 9/247:40 amOSL - DCA

2 stops16h 59mBritish Airways

Deal found 7/28

$513

Tue 10/142:55 pmDCA - OSL

2 stops13h 40mAmerican Airlines

Tue 10/211:10 pmOSL - DCA

2 stops15h 47mAmerican Airlines

Deal found 7/29

$525

Sun 8/178:00 pmDCA - OSL

2 stops16h 00mUnited Airlines

Mon 8/257:15 amOSL - DCA

2 stops17h 48mUnited Airlines

Deal found 7/26

$529

Tue 10/146:05 amDCA - OSL

1 stop18h 45mScandinavian Airlines

Tue 10/211:10 pmOSL - DCA

1 stop15h 54mScandinavian Airlines

Deal found 7/29

$538

Mon 9/229:40 amDCA - OSL

2 stops20h 35mAir Canada

Tue 10/76:35 amOSL - DCA

2 stops15h 16mAir Canada

Deal found 7/29

$557

Fri 8/223:40 pmDCA - OSL

2 stops14h 10mDelta

Wed 9/36:00 amOSL - DCA

2 stops18h 14mDelta

Deal found 7/27

$578

Wed 8/206:05 amDCA - TRF

2 stops26h 15mScandinavian Airlines

Wed 9/32:55 pmTRF - DCA

2 stops35h 01mScandinavian Airlines

Deal found 7/28

$793

Last-minute flights from Reagan-National to Oslo
Discover last-minute flight deals from Reagan-National to Oslo. Data last updated July 29, 2025 and is based on user searches.

Sun 8/36:05 amDCA - OSL

1 stop18h 45mScandinavian Airlines

Wed 8/131:10 pmOSL - DCA

1 stop16h 31mScandinavian Airlines

Deal found 7/26

$698

Mon 8/410:35 amDCA - OSL

2 stops16h 10mDelta

Wed 8/139:20 amOSL - DCA

2 stops15h 32mDelta

Deal found 7/26

$634

Thu 8/72:00 pmDCA - OSL

2 stops16h 15mUnited Airlines

Thu 8/147:15 amOSL - DCA

2 stops17h 47mUnited Airlines

Deal found 7/27

$770

Thu 8/712:55 pmDCA - OSL

3 stops26h 25mMultiple Airlines

Thu 8/148:00 amOSL - DCA

3 stops34h 03mMultiple Airlines

Deal found 7/28

$1,200

Fri 8/811:00 amDCA - TRF

2 stops23h 35mScandinavian Airlines

Mon 9/12:55 pmTRF - DCA

2 stops35h 01mScandinavian Airlines

Deal found 7/27

$993

Sun 8/178:00 pmDCA - OSL

2 stops16h 00mUnited Airlines

Mon 8/257:15 amOSL - DCA

2 stops17h 48mUnited Airlines

Deal found 7/26

$529

Wed 8/202:54 pmDCA - OSL

2 stops13h 46mAmerican Airlines

Wed 9/31:20 pmOSL - DCA

2 stops15h 47mAmerican Airlines

Deal found 7/28

$526

Wed 8/206:05 amDCA - TRF

2 stops26h 15mScandinavian Airlines

Wed 9/32:55 pmTRF - DCA

2 stops35h 01mScandinavian Airlines

Deal found 7/28

$793

Fri 8/227:32 pmDCA - OSL

2 stops20h 58mBritish Airways

Tue 8/267:45 amOSL - DCA

2 stops20h 30mBritish Airways

Deal found 7/27

$542

Fri 8/223:40 pmDCA - OSL

2 stops14h 10mDelta

Wed 9/36:00 amOSL - DCA

2 stops18h 14mDelta

Deal found 7/27

$578

Mon 8/256:05 amDCA - OSL

1 stop18h 45mScandinavian Airlines

Wed 9/311:05 amOSL - DCA

2 stops17h 10mScandinavian Airlines

Deal found 7/27

$579

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 July 29, 2025.

Wed 8/2711:00 amDCA - OSL

3 stops30h 20mMultiple Airlines

Deal found 7/28

$373

Wed 9/37:45 pmDCA - OSL

2 stops17h 30mBritish Airways

Deal found 7/27

$384

Thu 8/711:00 amDCA - OSL

2 stops16h 15mDelta

Deal found 7/27

$408

Sat 8/97:00 pmDCA - OSL

2 stops17h 05mUnited Airlines

Deal found 7/27

$411

Sun 8/106:59 amDCA - OSL

2 stops25h 46mAir Canada

Deal found 7/29

$414

Wed 9/312:15 pmDCA - TRF

3 stops20h 55mMultiple Airlines

Deal found 7/28

$598

Wed 8/276:05 amDCA - OSL

1 stop18h 45mScandinavian Airlines

Deal found 7/28

$644

Wed 9/31:45 pmDCA - OSL

3 stops23h 30mTAP AIR PORTUGAL

Deal found 7/27

$737

Wed 8/276:05 amDCA - TRF

2 stops26h 15mScandinavian Airlines

Deal found 7/28

$2,176

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

Wed 9/10

6:00 am-1:05 pm

2 stops25h 05m

Oslo Gardermoen

Wed 9/17

5:40 am-9:51 pm

2 stops22h 11m

$495

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Wed 9/10

3:35 pm-10:40 am

2 stops13h 05m

Oslo Gardermoen

Wed 9/24

7:40 am-6:39 pm

2 stops16h 59m

$513

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Tue 10/14

2:55 pm-10:35 am

2 stops13h 40m

Oslo Gardermoen

Tue 10/21

1:10 pm-10:57 pm

2 stops15h 47m

$525

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Sun 8/17

8:00 pm-6:00 pm

2 stops16h 00m

Oslo Gardermoen

Mon 8/25

7:15 am-7:03 pm

2 stops17h 48m

$529

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Tue 10/14

6:05 am-6:50 am

1 stop18h 45m

Oslo Gardermoen

Tue 10/21

1:10 pm-11:04 pm

1 stop15h 54m

$538

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Mon 9/22

9:40 am-12:15 pm

2 stops20h 35m

Oslo Gardermoen

Tue 10/7

6:35 am-3:51 pm

2 stops15h 16m

$557

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Fri 8/22

3:40 pm-11:50 am

2 stops14h 10m

Oslo Gardermoen

Wed 9/3

6:00 am-6:14 pm

2 stops18h 14m

$578

Washington, D.C.Oslo

DCA - TRF

DCATRF

Washington, D.C. Reagan-National

Wed 8/20

6:05 am-2:20 pm

2 stops26h 15m

Oslo Sandefjord

Wed 9/3

2:55 pm-7:56 pm

2 stops35h 01m

$793

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Wed 8/27

11:00 am-11:20 pm

3 stops30h 20m

$373

Washington, D.C.Oslo

DCA - OSL

DCAOSL

Washington, D.C. Reagan-National

Wed 9/3

7:45 pm-7:15 pm

2 stops17h 30m

$384

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 17 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.

Reviews of airlines servicing Oslo

See what other customers who have flown with Delta, United Airlines, and Scandinavian Airlines from Washington, D.C. Reagan-National Airport to Oslo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,977 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

7,977 reviews

Delta

8.0

Very good

7,977 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

8,899 reviews

Delta

8.0

Very good

7,977 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

1,449 reviews

Delta

8.0

Very good

7,977 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!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,977 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!

Air Canada

7.1

Good

9,822 reviews

Delta

8.0

Very good

7,977 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?
British Airways, at $513, was found to be the cheapest airline from Washington, D.C. Reagan-National Airport to Oslo.Alternate airlines to your destination round-trip include American Airlines and United Airlines. These flights start at 20% 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?
$384 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $408 and $411, 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 $1,010). 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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$373+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.

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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 July 29, 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 July 29, 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 July 29, 2025.

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 July 29, 2025.

See what other customers who have flown with Delta, United Airlines, and Scandinavian Airlines from Washington, D.C. Reagan-National Airport to Oslo have to say. You can also see how each airline compares in terms of 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

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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 July 29, 2025.