How long is the flight from Northern Ireland to Washington, D.C.?

A quick flight from Northern Ireland to Washington, D.C. can take about 18h 10m. British Airways provides one of the quickest options available for as low as $715. The distance from Northern Ireland to Washington, D.C. is about 3390 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

In terms of precipitation, rainfall in Washington, D.C. 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. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., 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 are the most popular routes from Northern Ireland to Washington, D.C.?

The most popular route from Northern Ireland to Washington, D.C. is Belfast Intl - Baltimore/Washington. You may also consider Belfast Intl - Washington, D.C. Dulles Intl or Belfast City - Washington, D.C. Dulles Intl.

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

When flying from Northern Ireland to Washington, D.C., the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How can I find direct flights from Northern Ireland to Washington, D.C.?

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

Can I find deals for business class flights from Northern Ireland to Washington, D.C.?

Yes. Cheapflights offers flight deals from Northern Ireland to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$473+ Flights from Northern Ireland to Washington, D.C.

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Cheap flight deals from Northern Ireland to Washington, D.C.

Best flights from Northern Ireland to Washington, D.C.
Discover carefully curated flight deals from Northern Ireland to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 20, 2025.

Tue 2/179:25 amBFS - IAD

3 stops40h 35mMultiple Airlines

Tue 2/247:40 pmIAD - BFS

2 stops12h 05mMultiple Airlines

Deal found 12/20

$687

Fri 1/306:45 amBHD - IAD

1 stop18h 10mBritish Airways

Tue 2/36:20 pmIAD - BHD

1 stop12h 10mBritish Airways

Deal found 12/18

$715

Tue 2/175:20 pmBHD - IAD

2 stops30h 49mDelta

Tue 2/246:05 pmIAD - BHD

1 stop21h 55mDelta

Deal found 12/20

$725

Tue 2/178:55 pmBFS - BWI

3 stops26h 45mMultiple Airlines

Tue 2/247:40 pmBWI - BFS

2 stops12h 05mMultiple Airlines

Deal found 12/20

$699

Tue 2/178:45 amBHD - IAD

1 stop11h 50mBritish Airways

Tue 2/249:45 pmIAD - BHD

1 stop12h 05mBritish Airways

Deal found 12/20

$715

Tue 2/178:45 amBHD - DCA

2 stops15h 13mBritish Airways

Tue 2/245:32 pmDCA - BHD

2 stops12h 58mBritish Airways

Deal found 12/20

$720

Tue 2/176:50 pmBHD - BWI

3 stops28h 50mMultiple Airlines

Tue 2/247:40 pmBWI - BHD

2 stops16h 35mMultiple Airlines

Deal found 12/20

$733

Fri 1/308:45 amBHD - DCA

2 stops15h 09mBritish Airways

Tue 2/31:35 pmDCA - BHD

2 stops16h 55mBritish Airways

Deal found 12/19

$720

Tue 2/1711:05 amBHD - IAD

3 stops38h 55mMultiple Airlines

Tue 2/247:40 pmIAD - BHD

2 stops16h 35mMultiple Airlines

Deal found 12/20

$750

Thu 3/59:05 amBHD - DCA

2 stops18h 00mBritish Airways

Mon 3/96:14 pmDCA - BHD

2 stops12h 26mBritish Airways

Deal found 12/18

$720

Thu 1/2911:05 amBHD - IAD

1 stop13h 50mBritish Airways

Mon 2/25:46 pmIAD - BHD

2 stops15h 29mBritish Airways

Deal found 12/17

$755

Thu 2/59:05 amBHD - IAD

1 stop15h 50mBritish Airways

Mon 2/95:46 pmIAD - BHD

2 stops15h 29mBritish Airways

Deal found 12/17

$755

Thu 1/298:00 pmBHD - BWI

1 stop27h 45mBritish Airways

Mon 2/22:46 pmBWI - BHD

2 stops18h 29mBritish Airways

Deal found 12/17

$782

Fri 2/65:40 pmBHD - BWI

1 stop30h 05mBritish Airways

Tue 2/108:35 pmBWI - BHD

1 stop9h 55mBritish Airways

Deal found 12/18

$782

Last-minute flights from Northern Ireland to Washington, D.C.
Discover last-minute flight deals from Northern Ireland to Washington, D.C.. Data last updated December 20, 2025 and is based on user searches.

Thu 1/299:05 amBHD - IAD

1 stop11h 30mBritish Airways

Mon 2/26:20 pmIAD - BHD

1 stop11h 20mBritish Airways

Deal found 12/17

$755

Thu 1/296:35 amBHD - BWI

1 stop17h 10mBritish Airways

Mon 2/22:46 pmBWI - BHD

2 stops20h 19mBritish Airways

Deal found 12/19

$782

Fri 1/306:45 amBHD - IAD

1 stop18h 10mBritish Airways

Tue 2/36:20 pmIAD - BHD

1 stop12h 10mBritish Airways

Deal found 12/18

$715

Fri 1/308:45 amBHD - DCA

2 stops15h 09mBritish Airways

Tue 2/31:35 pmDCA - BHD

2 stops16h 55mBritish Airways

Deal found 12/19

$720

One-way flights from Northern Ireland to Washington, D.C.
Search for one-way flight options from Northern Ireland to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated December 20, 2025.

Sat 3/2110:25 pmBFS - IAD

3 stops25h 20mMultiple Airlines

Deal found 12/18

$473

Sat 3/212:15 pmBHD - IAD

2 stops35h 45mMultiple Airlines

Deal found 12/18

$746

Sat 3/216:35 amBHD - IAD

1 stop18h 20mBritish Airways

Deal found 12/18

$806

Sat 3/2111:35 amBHD - BWI

1 stop12h 10mBritish Airways

Deal found 12/18

$816

Sat 3/219:15 amBHD - DCA

2 stops16h 15mBritish Airways

Deal found 12/18

$830

Sat 3/216:55 pmBHD - BWI

2 stops28h 50mMultiple Airlines

Deal found 12/18

$973

Find flight deals from Northern Ireland to Washington, D.C.

Round-trip from	$687 (Mytrip)
One-way from	$473 (Kiwi.com)

From Northern Ireland to Washington, D.C. (WAS)

Search Deals

One-way flight from Northern Ireland to Washington, D.C. (WAS)

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 2/17

9:25 am-9:00 pm

3 stops40h 35m

Washington, D.C. Dulles Intl

Tue 2/24

7:40 pm-12:45 pm

2 stops12h 05m

$687

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Tue 2/17

8:55 pm-6:40 pm

3 stops26h 45m

Baltimore/Washington

Tue 2/24

7:40 pm-12:45 pm

2 stops12h 05m

$699

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Fri 1/30

6:45 am-7:55 pm

1 stop18h 10m

Washington, D.C. Dulles Intl

Tue 2/3

6:20 pm-11:30 am

1 stop12h 10m

$715

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 2/17

8:45 am-3:35 pm

1 stop11h 50m

Washington, D.C. Dulles Intl

Tue 2/24

9:45 pm-2:50 pm

1 stop12h 05m

$715

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Tue 2/17

8:45 am-6:58 pm

2 stops15h 13m

Washington, D.C. Reagan-National

Tue 2/24

5:32 pm-11:30 am

2 stops12h 58m

$720

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Fri 1/30

8:45 am-6:54 pm

2 stops15h 09m

Washington, D.C. Reagan-National

Tue 2/3

1:35 pm-11:30 am

2 stops16h 55m

$720

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 3/5

9:05 am-10:05 pm

2 stops18h 00m

Washington, D.C. Reagan-National

Mon 3/9

6:14 pm-10:40 am

2 stops12h 26m

$720

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 2/17

5:20 pm-7:09 pm

2 stops30h 49m

Washington, D.C. Dulles Intl

Tue 2/24

6:05 pm-9:00 pm

1 stop21h 55m

$725

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Tue 2/17

6:50 pm-6:40 pm

3 stops28h 50m

Baltimore/Washington

Tue 2/24

7:40 pm-5:15 pm

2 stops16h 35m

$733

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 2/17

11:05 am-9:00 pm

3 stops38h 55m

Washington, D.C. Dulles Intl

Tue 2/24

7:40 pm-5:15 pm

2 stops16h 35m

$750

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 20 results

Best time to book a flight from Northern Ireland to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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.

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.?
A quick flight from Northern Ireland to Washington, D.C. can take about 18h 10m. British Airways provides one of the quickest options available for as low as $715. The distance from Northern Ireland to Washington, D.C. is about 3390 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the most popular routes from Northern Ireland to Washington, D.C.?
The most popular route from Northern Ireland to Washington, D.C. is Belfast Intl - Baltimore/Washington. You may also consider Belfast Intl - Washington, D.C. Dulles Intl or Belfast City - Washington, D.C. Dulles Intl.
Can I find deals for flights from Northern Ireland to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Northern Ireland to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Northern Ireland to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to Washington, D.C..
Can I find deals for business class flights from Northern Ireland to Washington, D.C.?
Yes. Cheapflights offers flight deals from Northern Ireland to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Alexandria

Woodbridge

Tysons

Arlington

Owings Mills

Springfield

Hanover

Silver Spring

Fredericksburg

Linthicum Heights

Rockville

Laurel

Towson

Manassas

National Harbor

Bowie

Largo

McLean

Clinton

Cordova

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$473+ Cheap flights from Northern Ireland to Washington, D.C. (WAS)

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 3/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Northern Ireland to Washington, D.C. with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Northern Ireland to Washington, D.C.

Best flights from Northern Ireland to Washington, D.C.Discover carefully curated flight deals from Northern Ireland to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 20, 2025.

Discover carefully curated flight deals from Northern Ireland to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 20, 2025.

Find flight deals from Northern Ireland to Washington, D.C.

Keep the following information in mind while searching for Northern Ireland to Washington, D.C. flight deals. Data was last updated December 20, 2025.

Round-trip from

One-way from

Cheapflights Fare Finder

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

Best time to book a flight from Northern Ireland to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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.

Related info for your journey

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

What are the most popular routes from Northern Ireland to Washington, D.C.?

Can I find deals for flights from Northern Ireland to Washington, D.C. that include hotel bookings?

How can I find direct flights from Northern Ireland to Washington, D.C.?

Can I find deals for business class flights from Northern Ireland to Washington, D.C.?

Traveling to a place near Washington, D.C.?

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Alternative routes for Northern Ireland to Washington, D.C.

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Best flights from Northern Ireland to Washington, D.C.
Discover carefully curated flight deals from Northern Ireland to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 20, 2025.