Cheap flights from Northern Ireland to Washington, D.C. from $634

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Northern Ireland to Washington, D.C. departing on 7/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
British Airways Logo
8:35 pm - 4:47 pm
BHD
-
DCA
25h 12m
2 stops
British Airways Logo
5:31 pm - 12:55 pm
DCA
-
BHD
14h 24m
2 stops
$829British Airways
Thu, Apr 23 - Mon, Apr 27
British Airways Logo
11:00 am - 10:15 pm
BHD
-
DCA
16h 15m
2 stops
British Airways Logo
6:00 am - 8:50 am
DCA
-
BHD
21h 50m
2 stops
$833British Airways
Fri, May 1 - Mon, May 4
British Airways Logo
9:35 am - 5:25 pm
BHD
-
IAD
12h 50m
1 stop
British Airways Logo
5:20 pm - 12:55 pm
IAD
-
BHD
14h 35m
2 stops
$839British Airways
Thu, Sep 3 - Mon, Sep 7
British Airways Logo
2:20 pm - 8:20 pm
BHD
-
IAD
11h 00m
1 stop
British Airways Logo
8:19 pm - 5:30 pm
IAD
-
BHD
16h 11m
2 stops
$840British Airways
Thu, Sep 3 - Mon, Sep 7
British Airways Logo
4:35 pm - 3:30 pm
BHD
-
IAD
27h 55m
2 stops
British Airways Logo
5:20 pm - 12:55 pm
IAD
-
BHD
14h 35m
2 stops
$842British Airways
Thu, Sep 3 - Mon, Sep 7
British Airways Logo
9:35 am - 10:20 pm
BHD
-
DCA
17h 45m
2 stops
British Airways Logo
2:54 pm - 12:55 pm
DCA
-
BHD
17h 01m
2 stops
$845British Airways
Thu, Sep 3 - Mon, Sep 7
British Airways Logo
9:35 am - 11:17 pm
BHD
-
DCA
18h 42m
2 stops
British Airways Logo
5:45 pm - 3:30 pm
DCA
-
BHD
16h 45m
2 stops
$848British Airways
Thu, Sep 3 - Mon, Sep 7
Multiple Airlines Logo
7:35 am - 2:15 pm
BFS
-
IAD
35h 40m
3 stops
Multiple Airlines Logo
8:30 pm - 11:20 pm
IAD
-
BFS
21h 50m
3 stops
$927Multiple Airlines
Fri, May 1 - Mon, May 11
Multiple Airlines Logo
9:40 am - 7:20 pm
BFS
-
IAD
14h 40m
2 stops
Multiple Airlines Logo
8:30 pm - 8:40 pm
IAD
-
BFS
19h 10m
2 stops
$946Multiple Airlines
Fri, May 1 - Mon, May 11
Multiple Airlines Logo
7:35 am - 2:15 pm
BFS
-
IAD
35h 40m
3 stops
Multiple Airlines Logo
5:55 pm - 3:35 pm
IAD
-
BFS
16h 40m
2 stops
$1,110Multiple Airlines
Fri, May 1 - Mon, May 11

British Airways flights from Northern Ireland to Washington, D.C.

Our best British Airways deals on Northern Ireland to Washington, D.C. flight tickets
British Airways
Apr 23
BHD8:35 pmBelfast City
25h 12m
2 stops
DCA4:47 pmWashington, D.C. Reagan-National
Apr 27
DCA5:31 pmWashington, D.C. Reagan-National
14h 24m
2 stops
BHD12:55 pmBelfast City
$829
British Airways
May 1
BHD11:00 amBelfast City
16h 15m
2 stops
DCA10:15 pmWashington, D.C. Reagan-National
May 4
DCA6:00 amWashington, D.C. Reagan-National
21h 50m
2 stops
BHD8:50 amBelfast City
$833
British Airways
Sep 3
BHD9:35 amBelfast City
12h 50m
1 stop
IAD5:25 pmWashington, D.C. Dulles Intl
Sep 7
IAD5:20 pmWashington, D.C. Dulles Intl
14h 35m
2 stops
BHD12:55 pmBelfast City
$839

momondo Fare Finder

 
Customize your flight search to find flights from Northern Ireland to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 23, 2026.
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

Cheapest round-trip

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 4/23

8:35 pm-4:47 pm

2 stops25h 12m

Washington, D.C. Reagan-National

Mon 4/27

5:31 pm-12:55 pm

2 stops14h 24m

$829

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Fri 5/1

11:00 am-10:15 pm

2 stops16h 15m

Washington, D.C. Reagan-National

Mon 5/4

6:00 am-8:50 am

2 stops21h 50m

$833

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 9/3

9:35 am-5:25 pm

1 stop12h 50m

Washington, D.C. Dulles Intl

Mon 9/7

5:20 pm-12:55 pm

2 stops14h 35m

$839
Quickest round-trip

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 9/3

2:20 pm-8:20 pm

1 stop11h 00m

Washington, D.C. Dulles Intl

Mon 9/7

8:19 pm-5:30 pm

2 stops16h 11m

$840

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 9/3

4:35 pm-3:30 pm

2 stops27h 55m

Washington, D.C. Dulles Intl

Mon 9/7

5:20 pm-12:55 pm

2 stops14h 35m

$842

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 9/3

9:35 am-10:20 pm

2 stops17h 45m

Washington, D.C. Reagan-National

Mon 9/7

2:54 pm-12:55 pm

2 stops17h 01m

$845

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 9/3

9:35 am-11:17 pm

2 stops18h 42m

Washington, D.C. Reagan-National

Mon 9/7

5:45 pm-3:30 pm

2 stops16h 45m

$848

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Fri 5/1

7:35 am-2:15 pm

3 stops35h 40m

Washington, D.C. Dulles Intl

Mon 5/11

8:30 pm-11:20 pm

3 stops21h 50m

$927

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Fri 5/1

9:40 am-7:20 pm

2 stops14h 40m

Washington, D.C. Dulles Intl

Mon 5/11

8:30 pm-8:40 pm

2 stops19h 10m

$946

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Fri 5/1

7:35 am-2:15 pm

3 stops35h 40m

Washington, D.C. Dulles Intl

Mon 5/11

5:55 pm-3:35 pm

2 stops16h 40m

$1,110

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from Northern Ireland to Washington, D.C.

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Northern Ireland to Washington, D.C. flights?

You could potentially save up to 5% on your flight if you consider stops on a Northern Ireland to Washington, D.C. flight.

Cheap Northern Ireland to Washington, D.C. flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Northern Ireland to Washington, D.C.

Fastest flight time

14h 45m

Direct flights

None
The fastest flight from Northern Ireland to Washington, D.C. takes 14h 45m
There are no direct flights from Northern Ireland to Washington, D.C.. There are no popular flight routes from Northern Ireland to Washington, D.C..
  • When did momondo last update prices for flights from Northern Ireland to Washington, D.C.?

    Prices for flights from Northern Ireland to Washington, D.C. refresh daily.

  • How old do you have to be to fly from Northern Ireland to Washington, D.C.?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Northern Ireland to Washington, D.C..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Waldorf
Woodbridge
Laurel
Colonial Beach
Gaithersburg
Towson
Silver Spring
Fredericksburg
Rockville
Tysons
Manassas
Linthicum Heights
Springfield
Bethesda
Fairfax
College Park

Why use momondo?

Why should I use momondo to find a flight deal from Northern Ireland to Washington, D.C.?

It is quick and easy to find Northern Ireland to Washington, D.C. flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington, D.C. that suits you.

Can I find flights from Northern Ireland to Washington, D.C. with flexible booking policies on momondo?

All flight searches from Northern Ireland to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Northern Ireland to Washington, D.C.?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Northern Ireland to Washington, D.C..

I’m not ready to book a flight from Northern Ireland to Washington, D.C. right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Northern Ireland to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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1 adult
Wed 4/22
Wed 4/29

Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.