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

Currently, February is the cheapest month in which you can book a flight from Northern Ireland to Washington, D.C. Reagan-National Airport (average of $278). Flying from Northern Ireland 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).

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.

$554+ Flights from Northern Ireland to Washington, D.C. Reagan-National Airport

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Cheap flight deals from Northern Ireland to Reagan-National

Round-trip from	$677 (American Airlines)
One-way from	$554 (Kiwi.com)

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

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

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Find flight deals from Northern Ireland to Reagan-National

Cheapest flights from Northern Ireland to Reagan-National
Explore the most affordable flight options available from Northern Ireland to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Thu 12/46:35 amBHD - DCA

2 stops16h 08mAmerican Airlines

Mon 12/85:24 pmDCA - BHD

2 stops15h 51mAmerican Airlines

Deal found 9/14

$677

Thu 10/96:30 amBHD - DCA

2 stops21h 29mDelta

Thu 10/167:55 pmDCA - BHD

2 stops16h 00mDelta

Deal found 9/15

$683

Fri 10/106:30 amBHD - DCA

2 stops20h 37mVirgin Atlantic

Sun 10/124:50 pmDCA - BHD

2 stops47h 25mVirgin Atlantic

Deal found 9/15

$771

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 September 17, 2025.

Thu 12/46:35 amBHD - DCA

2 stops16h 08mAmerican Airlines

Mon 12/85:24 pmDCA - BHD

2 stops15h 51mAmerican Airlines

Deal found 9/14

$677

Thu 10/96:30 amBHD - DCA

2 stops21h 29mDelta

Thu 10/167:55 pmDCA - BHD

2 stops16h 00mDelta

Deal found 9/15

$683

Fri 10/106:30 amBHD - DCA

2 stops20h 37mVirgin Atlantic

Sun 10/124:50 pmDCA - BHD

2 stops47h 25mVirgin Atlantic

Deal found 9/15

$771

Last-minute flights from Northern Ireland to Reagan-National
Discover last-minute flight deals from Northern Ireland to Reagan-National. Data last updated September 17, 2025 and is based on user searches.

Thu 10/96:30 amBHD - DCA

2 stops21h 29mDelta

Thu 10/167:55 pmDCA - BHD

2 stops16h 00mDelta

Deal found 9/15

$683

Fri 10/106:30 amBHD - DCA

2 stops20h 37mVirgin Atlantic

Sun 10/124:50 pmDCA - BHD

2 stops47h 25mVirgin Atlantic

Deal found 9/15

$771

One-way flights from Northern Ireland to Reagan-National
Search for one-way flight options from Northern Ireland to Reagan-National. Find affordable one-way fares based on user searches. Data last updated September 17, 2025.

Tue 10/148:15 amBFS - DCA

3 stops32h 49mMultiple Airlines

Deal found 9/14

$554

Tue 10/141:40 pmBHD - DCA

2 stops14h 17mMultiple Airlines

Deal found 9/14

$841

Sun 11/212:10 pmBHD - DCA

2 stops14h 20mBritish Airways

Deal found 9/17

$1,644

Cheapflights Fare Finder

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 12/4

6:35 am-5:43 pm

2 stops16h 08m

Washington, D.C. Reagan-National

Mon 12/8

5:24 pm-2:15 pm

2 stops15h 51m

$677

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 10/9

6:30 am-10:59 pm

2 stops21h 29m

Washington, D.C. Reagan-National

Thu 10/16

7:55 pm-4:55 pm

2 stops16h 00m

$683

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Fri 10/10

6:30 am-10:07 pm

2 stops20h 37m

Washington, D.C. Reagan-National

Sun 10/12

4:50 pm-9:15 pm

2 stops47h 25m

$771

BelfastWashington, D.C.

BFS - DCA

BFSDCA

Belfast Intl

Tue 10/14

8:15 am-12:04 pm

3 stops32h 49m

$554

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Tue 10/14

1:40 pm-10:57 pm

2 stops14h 17m

$841

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Sun 11/2

12:10 pm-9:30 pm

2 stops14h 20m

$1,644

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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.

Cheapflights Insights

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

No data available for this route at this time. Please check back soon.

Related info for your journey

How long is the flight from Northern Ireland to Washington, D.C. Reagan-National Airport?
For as low as $677, American Airlines can have you in Washington, D.C. Reagan-National Airport from Northern Ireland in 16h 08m. 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.
What is the cheapest month to book a flight from Northern Ireland to Washington, D.C. Reagan-National Airport?
Currently, February is the cheapest month in which you can book a flight from Northern Ireland to Washington, D.C. Reagan-National Airport (average of $278). Flying from Northern Ireland 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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Linthicum Heights

Fairfax

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Dundalk

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$554+ Cheap flights from Northern Ireland 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 10/14. 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

Keep the following information in mind while searching for Northern Ireland to Reagan-National flight deals. Data was last updated September 17, 2025.

Round-trip from

One-way from

Find flight deals from Northern Ireland to Reagan-National

Cheapest flights from Northern Ireland to Reagan-NationalExplore the most affordable flight options available from Northern Ireland to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Explore the most affordable flight options available from Northern Ireland to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

Cheapflights Fare Finder

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?

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

Traveling to a place near Washington, D.C. Reagan-National Airport?

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Alternative routes for Northern Ireland to Reagan-National

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Cheapest flights from Northern Ireland to Reagan-National
Explore the most affordable flight options available from Northern Ireland to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.