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).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Northern Ireland to Washington, D.C. Reagan-National Airport as you normally would.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Northern Ireland 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.

$983+ Flights from Northern Ireland to Washington, D.C. Reagan-National Airport

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Cheap flight deals from Northern Ireland to Reagan-National

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

Thu 3/510:40 amBHD - DCA

2 stops17h 20mBritish Airways

Mon 3/95:00 pmDCA - BHD

2 stops13h 40mBritish Airways

Deal found 12/9

$983

Thu 3/126:30 amBHD - DCA

2 stops19h 38mDelta

Tue 3/175:05 pmDCA - BHD

2 stops19h 45mDelta

Deal found 12/11

$987

Thu 1/2210:40 amBHD - DCA

2 stops16h 24mBritish Airways

Mon 1/261:35 pmDCA - BHD

2 stops16h 05mBritish Airways

Deal found 12/9

$983

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

Thu 1/2210:40 amBHD - DCA

2 stops16h 24mBritish Airways

Mon 1/261:35 pmDCA - BHD

2 stops16h 05mBritish Airways

Deal found 12/9

$983

Find flight deals from Northern Ireland to Reagan-National

Round-trip from	$983 (British Airways)

From Northern Ireland to Washington, D.C. Reagan-National

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

Fly from

Fly to

Route

Depart

Return

Price

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 3/5

10:40 am-11:00 pm

2 stops17h 20m

Washington, D.C. Reagan-National

Mon 3/9

5:00 pm-10:40 am

2 stops13h 40m

$983

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 1/22

10:40 am-10:04 pm

2 stops16h 24m

Washington, D.C. Reagan-National

Mon 1/26

1:35 pm-10:40 am

2 stops16h 05m

$983

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 3/12

6:30 am-10:08 pm

2 stops19h 38m

Washington, D.C. Reagan-National

Tue 3/17

5:05 pm-4:50 pm

2 stops19h 45m

$987

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Best time to book a flight from Northern Ireland to Reagan-National

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

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Everything you need to know about your flight from Northern Ireland to Washington, D.C. Reagan-National Airport

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Related info for your journey

How long is the flight from Northern Ireland to Washington, D.C. Reagan-National Airport?
For as low as $983, British Airways can have you in Washington, D.C. Reagan-National Airport from Northern Ireland in 17h 20m. The distance between Northern Ireland and Washington, D.C. Reagan-National Airport is about 3378 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
Can I find deals for flights from Northern Ireland to Reagan-National that include hotel bookings?
Yes. In addition to deals on Northern Ireland to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Northern Ireland to Reagan-National?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to Reagan-National.
Can I find deals for business class flights from Northern Ireland to Reagan-National?
Yes. Cheapflights offers flight deals from Northern Ireland 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.

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$983+ Cheap flights from Northern Ireland to Reagan-National (DCA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Northern Ireland to Reagan-National with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Northern Ireland to Reagan-National

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

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

Find flight deals from Northern Ireland to Reagan-National

Keep the following information in mind while searching for Northern Ireland to Reagan-National flight deals. Data was last updated December 12, 2025.

Round-trip from

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

Best time to book a flight from Northern Ireland to Reagan-National

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

Cheapflights Insights

Everything you need to know about your flight from Northern Ireland to Washington, D.C. Reagan-National Airport

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland 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 Northern Ireland to Washington, D.C. Reagan-National Airport?

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

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

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

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