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

Currently, February is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Washington, D.C. Reagan-National Airport (average of $278). Flying from Oslo Gardermoen Airport to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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.

In terms of precipitation, rainfall in Washington, D.C. Reagan-National Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Reagan-National Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Reagan-National Airport, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

Find a great deal and save up to 78% by booking at least 43 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Oslo Gardermoen Airport to Washington, D.C. Reagan-National Airport within the next two weeks, with the cheapest ticket starting at $484.

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

The best pricing can be found in the month of February. Prices to Washington, D.C. Reagan-National Airport from Oslo Gardermoen Airport average $523. You can even find prices in February for less than $523, as users have found deals to Washington, D.C. Reagan-National Airport from as low as $361. The month of July appears to be one of the more expensive times to travel to Washington, D.C. Reagan-National Airport from Oslo Gardermoen Airport. Flying in the targeted month can save you up to 25%.

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

When flying from Oslo Gardermoen Airport to Washington, D.C. Reagan-National Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

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

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

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

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

$301+ Flights from Oslo Gardermoen Airport to Washington, D.C. Reagan-National Airport

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Cheap flight deals from Oslo Gardermoen to Reagan-National

Round-trip from	$454 (Travelis)
One-way from	$301 (American Airlines)
Popular in	July
Cheapest in	February
Average price	$485

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

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

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Highest demand for flights based on searches. 8% potential increase in price ($51 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Find flight deals from Oslo Gardermoen to Reagan-National

Cheapest flights from Oslo Gardermoen to Reagan-National
Explore the most affordable flight options available from Oslo Gardermoen to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Sat 10/258:20 amOSL - DCA

2 stops16h 46mBritish Airways

Mon 11/101:44 pmDCA - OSL

2 stops15h 11mBritish Airways

Deal found 9/11

$454

Wed 10/2912:25 pmOSL - DCA

2 stops15h 32mFinnair

Mon 11/35:45 pmDCA - OSL

2 stops20h 25mFinnair

Deal found 9/10

$465

Thu 10/27:45 amOSL - DCA

2 stops18h 14mAmerican Airlines

Mon 10/137:06 pmDCA - OSL

2 stops17h 34mAmerican Airlines

Deal found 9/11

$467

Fri 10/247:50 amOSL - DCA

2 stops20h 25mAmerican Airlines

Thu 11/61:44 pmDCA - OSL

2 stops18h 31mAmerican Airlines

Deal found 9/10

$469

Thu 10/2311:40 amOSL - DCA

2 stops15h 19mAmerican Airlines

Wed 11/511:33 amDCA - OSL

2 stops20h 37mAmerican Airlines

Deal found 9/11

$470

Wed 10/2912:40 pmOSL - DCA

2 stops16h 12mDelta

Mon 11/33:00 pmDCA - OSL

2 stops16h 50mDelta

Deal found 9/11

$471

Thu 9/182:15 pmOSL - DCA

2 stops15h 26mDelta

Wed 10/112:15 pmDCA - OSL

2 stops14h 30mDelta

Deal found 9/11

$483

Sun 10/269:35 amOSL - DCA

2 stops19h 24mUnited Airlines

Sun 11/25:00 amDCA - OSL

2 stops25h 05mUnited Airlines

Deal found 9/11

$505

Thu 11/271:45 pmOSL - DCA

2 stops25h 10mAir Canada

Sun 11/306:59 amDCA - OSL

2 stops24h 06mAir Canada

Deal found 9/9

$511

Sun 10/197:45 amOSL - DCA

2 stops30h 05mAmerican Airlines

Mon 11/311:40 amDCA - OSL

2 stops29h 00mAmerican Airlines

Deal found 9/10

$527

Best flights from Oslo Gardermoen to Reagan-National
Discover carefully curated flight deals from Oslo Gardermoen to Reagan-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Sat 10/258:20 amOSL - DCA

2 stops16h 46mBritish Airways

Mon 11/101:44 pmDCA - OSL

2 stops15h 11mBritish Airways

Deal found 9/11

$454

Wed 10/2912:25 pmOSL - DCA

2 stops15h 32mFinnair

Mon 11/35:45 pmDCA - OSL

2 stops20h 25mFinnair

Deal found 9/10

$465

Thu 10/27:45 amOSL - DCA

2 stops21h 22mAmerican Airlines

Mon 10/135:30 pmDCA - OSL

2 stops19h 10mAmerican Airlines

Deal found 9/10

$468

Wed 10/2912:40 pmOSL - DCA

2 stops16h 12mDelta

Mon 11/33:00 pmDCA - OSL

2 stops16h 50mDelta

Deal found 9/11

$471

Sun 10/269:35 amOSL - DCA

2 stops19h 24mUnited Airlines

Sun 11/25:00 amDCA - OSL

2 stops25h 05mUnited Airlines

Deal found 9/11

$505

Thu 11/271:45 pmOSL - DCA

2 stops25h 10mAir Canada

Sun 11/306:59 amDCA - OSL

2 stops24h 06mAir Canada

Deal found 9/9

$511

Fri 10/247:50 amOSL - DCA

2 stops20h 25mAmerican Airlines

Thu 11/61:44 pmDCA - OSL

2 stops18h 31mAmerican Airlines

Deal found 9/10

$469

Thu 10/2311:40 amOSL - DCA

2 stops15h 19mAmerican Airlines

Wed 11/511:33 amDCA - OSL

2 stops20h 37mAmerican Airlines

Deal found 9/11

$470

Mon 10/2011:50 amOSL - DCA

2 stops18h 02mDelta

Sun 11/25:00 pmDCA - OSL

2 stops16h 20mDelta

Deal found 9/10

$563

Sun 10/197:45 amOSL - DCA

2 stops30h 05mAmerican Airlines

Mon 11/311:40 amDCA - OSL

2 stops29h 00mAmerican Airlines

Deal found 9/10

$527

Thu 11/277:05 amOSL - DCA

2 stops37h 19mAmerican Airlines

Sun 11/301:44 pmDCA - OSL

2 stops26h 56mAmerican Airlines

Deal found 9/10

$528

Last-minute flights from Oslo Gardermoen to Reagan-National
Discover last-minute flight deals from Oslo Gardermoen to Reagan-National. Data last updated September 11, 2025 and is based on user searches.

Thu 9/182:15 pmOSL - DCA

2 stops15h 26mDelta

Wed 10/112:15 pmDCA - OSL

2 stops14h 30mDelta

Deal found 9/11

$483

Thu 9/182:15 pmOSL - DCA

2 stops15h 26mKLM

Wed 10/12:50 pmDCA - OSL

2 stops14h 15mKLM

Deal found 9/11

$543

Thu 10/27:45 amOSL - DCA

2 stops18h 14mAmerican Airlines

Mon 10/137:06 pmDCA - OSL

2 stops17h 34mAmerican Airlines

Deal found 9/11

$467

Sun 10/197:45 amOSL - DCA

2 stops30h 05mAmerican Airlines

Mon 11/311:40 amDCA - OSL

2 stops29h 00mAmerican Airlines

Deal found 9/10

$527

Thu 10/2311:40 amOSL - DCA

2 stops15h 19mAmerican Airlines

Wed 11/511:33 amDCA - OSL

2 stops20h 37mAmerican Airlines

Deal found 9/11

$470

Fri 10/247:50 amOSL - DCA

2 stops20h 25mAmerican Airlines

Thu 11/61:44 pmDCA - OSL

2 stops18h 31mAmerican Airlines

Deal found 9/10

$469

Sat 10/258:20 amOSL - DCA

2 stops16h 46mBritish Airways

Mon 11/101:44 pmDCA - OSL

2 stops15h 11mBritish Airways

Deal found 9/11

$454

Sun 10/269:35 amOSL - DCA

2 stops19h 24mUnited Airlines

Sun 11/25:00 amDCA - OSL

2 stops25h 05mUnited Airlines

Deal found 9/11

$505

Wed 10/2912:25 pmOSL - DCA

2 stops15h 32mFinnair

Mon 11/35:45 pmDCA - OSL

2 stops20h 25mFinnair

Deal found 9/10

$465

Wed 10/2912:40 pmOSL - DCA

2 stops16h 12mDelta

Mon 11/33:00 pmDCA - OSL

2 stops16h 50mDelta

Deal found 9/11

$471

One-way flights from Oslo Gardermoen to Reagan-National
Search for one-way flight options from Oslo Gardermoen to Reagan-National. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Fri 2/137:10 amOSL - DCA

2 stops18h 50mAmerican Airlines

Deal found 9/11

$301

Sat 12/277:10 amOSL - DCA

2 stops17h 47mMultiple Airlines

Deal found 9/10

$345

Thu 10/167:45 amOSL - DCA

2 stops18h 14mMultiple Airlines

Deal found 9/10

$484

Wed 10/1511:35 amOSL - DCA

2 stops17h 22mBritish Airways

Deal found 9/10

$501

Sun 12/287:20 amOSL - DCA

2 stops17h 20mBritish Airways

Deal found 9/10

$648

Fri 12/267:10 amOSL - DCA

2 stops19h 56mAmerican Airlines

Deal found 9/10

$678

Sun 12/289:00 amOSL - DCA

3 stops38h 46mMultiple Airlines

Deal found 9/10

$689

Fri 2/139:00 amOSL - DCA

3 stops37h 59mMultiple Airlines

Deal found 9/11

$726

Thu 10/162:45 pmOSL - DCA

1 stop14h 19mScandinavian Airlines

Deal found 9/10

$732

Sun 1/46:45 pmOSL - DCA

3 stops51h 22mMultiple Airlines

Deal found 9/10

$761

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

OsloWashington, D.C.

OSL - DCA

OSLDCA

Oslo Gardermoen

Sat 10/25

8:20 am-7:06 pm

2 stops16h 46m

Washington, D.C. Reagan-National

Mon 11/10

1:44 pm-10:55 am

2 stops15h 11m

$454

OsloWashington, D.C.

OSL - DCA

OSLDCA

Oslo Gardermoen

Wed 10/29

12:25 pm-10:57 pm

2 stops15h 32m

Washington, D.C. Reagan-National

Mon 11/3

5:45 pm-8:10 pm

2 stops20h 25m

$465

OsloWashington, D.C.

OSL - DCA

OSLDCA

Oslo Gardermoen

Thu 10/2

7:45 am-11:07 pm

2 stops21h 22m

Washington, D.C. Reagan-National

Mon 10/13

5:30 pm-6:40 pm

2 stops19h 10m

$468

OsloWashington, D.C.

OSL - DCA

OSLDCA

Oslo Gardermoen

Fri 10/24

7:50 am-10:15 pm

2 stops20h 25m

Washington, D.C. Reagan-National

Thu 11/6

1:44 pm-2:15 pm

2 stops18h 31m

$469

OsloWashington, D.C.

OSL - DCA

OSLDCA

Oslo Gardermoen

Thu 10/23

11:40 am-8:59 pm

2 stops15h 19m

Washington, D.C. Reagan-National

Wed 11/5

11:33 am-2:10 pm

2 stops20h 37m

$470

OsloWashington, D.C.

OSL - DCA

OSLDCA

Oslo Gardermoen

Wed 10/29

12:40 pm-11:52 pm

2 stops16h 12m

Washington, D.C. Reagan-National

Mon 11/3

3:00 pm-1:50 pm

2 stops16h 50m

$471

OsloWashington, D.C.

OSL - DCA

OSLDCA

Oslo Gardermoen

Sun 10/26

9:35 am-11:59 pm

2 stops19h 24m

Washington, D.C. Reagan-National

Sun 11/2

5:00 am-12:05 pm

2 stops25h 05m

$505

OsloWashington, D.C.

OSL - DCA

OSLDCA

Oslo Gardermoen

Thu 11/27

1:45 pm-8:55 am

2 stops25h 10m

Washington, D.C. Reagan-National

Sun 11/30

6:59 am-1:05 pm

2 stops24h 06m

$511

OsloWashington, D.C.

OSL - DCA

OSLDCA

Oslo Gardermoen

Sun 10/19

7:45 am-7:50 am

2 stops30h 05m

Washington, D.C. Reagan-National

Mon 11/3

11:40 am-10:40 pm

2 stops29h 00m

$527

OsloWashington, D.C.

OSL - DCA

OSLDCA

Oslo Gardermoen

Thu 11/27

7:05 am-2:24 pm

2 stops37h 19m

Washington, D.C. Reagan-National

Sun 11/30

1:44 pm-10:40 pm

2 stops26h 56m

$528

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 21 results

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

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Oslo Gardermoen 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.

Related info for your journey

How long is the flight from Oslo Gardermoen Airport to Washington, D.C. Reagan-National Airport?
Airlines like British Airways, Finnair, and American Airlines fly from Oslo Gardermoen Airport to Washington, D.C. Reagan-National Airport in about 15h 32m. The time it takes to get you to your destination can typically vary by up to 5h 50m. Oslo Gardermoen Airport and Washington, D.C. Reagan-National Airport are separated by a distance of 3877 mi. Both multi-stop and nonstop flights can be found to your destination and back.
Can I find deals for flights from Oslo Gardermoen to Reagan-National that include hotel bookings?
Yes. In addition to deals on Oslo Gardermoen to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Oslo Gardermoen to Reagan-National?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oslo Gardermoen to Reagan-National.
Can I find deals for business class flights from Oslo Gardermoen to Reagan-National?
Yes. Cheapflights offers flight deals from Oslo Gardermoen to Reagan-National 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 Oslo Gardermoen Airport to Washington, D.C. Reagan-National Airport?
Currently, February is the cheapest month in which you can book a flight from Oslo Gardermoen Airport to Washington, D.C. Reagan-National Airport (average of $278). Flying from Oslo Gardermoen Airport to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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.

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$301+ Cheap flights from Oslo Gardermoen (OSL) to Reagan-National (DCA)

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 2/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Oslo Gardermoen to Reagan-National with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Oslo Gardermoen to Reagan-National

Round-trip from

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Cheapest in

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Find flight deals from Oslo Gardermoen to Reagan-National

Cheapest flights from Oslo Gardermoen to Reagan-NationalExplore the most affordable flight options available from Oslo Gardermoen to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Explore the most affordable flight options available from Oslo Gardermoen to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

Cheapflights Fare Finder

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

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

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Oslo Gardermoen with our price prediction graph.

Related info for your journey

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

How long is the flight from Oslo Gardermoen Airport to Washington, D.C. Reagan-National Airport?

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

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

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

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

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Cheapest flights from Oslo Gardermoen to Reagan-National
Explore the most affordable flight options available from Oslo Gardermoen to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.