Cheap flights from Northern Ireland to Washington, D.C. from $385

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 9/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Northern Ireland to Washington, D.C.

Cheap round-trip flights

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7:25 am - 3:20 pmBFS-IAD
36h 55m3 stops
 Logo
5:00 pm - 9:30 pmIAD-BFS
23h 30m3 stops
Tue, Oct 7 - Tue, Oct 14
 Logo
10:55 pm - 5:40 pmBFS-BWI
23h 45m2 stops
 Logo
6:50 pm - 4:40 pmBWI-BFS
16h 50m2 stops
Tue, Oct 7 - Tue, Oct 14
 Logo
7:25 am - 3:20 pmBFS-IAD
36h 55m3 stops
 Logo
5:00 pm - 7:25 pmIAD-BFS
21h 25m2 stops
Tue, Oct 7 - Tue, Oct 14
 Logo
4:40 pm - 5:40 pmBFS-BWI
30h 00m3 stops
 Logo
6:50 pm - 4:40 pmBWI-BFS
16h 50m2 stops
Tue, Oct 7 - Tue, Oct 14
American Airlines Logo
11:05 am - 7:55 pmBHD-IAD
13h 50m1 stop
American Airlines Logo
4:34 pm - 4:05 pmIAD-BHD
18h 31m2 stops
$762American Airlines
Find Deal
Thu, Nov 20 - Mon, Nov 24
American Airlines Logo
11:05 am - 7:55 pmBHD-IAD
13h 50m1 stop
American Airlines Logo
6:20 pm - 10:40 amIAD-BHD
11h 20m1 stop
$766American Airlines
Find Deal
Thu, Nov 20 - Mon, Nov 24
American Airlines Logo
9:05 am - 8:11 pmBHD-DCA
16h 06m2 stops
American Airlines Logo
3:59 pm - 10:40 amDCA-BHD
13h 41m2 stops
$768American Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
KLM Logo
6:30 am - 6:14 pmBHD-DCA
16h 44m2 stops
KLM Logo
4:45 pm - 4:55 pmDCA-BHD
19h 10m2 stops
$786KLM
Find Deal
Sat, Sep 6 - Tue, Sep 9
Delta Logo
6:30 am - 7:18 pmBHD-IAD
17h 48m2 stops
Delta Logo
5:10 pm - 4:55 pmIAD-BHD
18h 45m2 stops
$4,939Delta
Find Deal
Tue, Oct 14 - Mon, Oct 20
Aer Lingus Logo
9:35 am - 8:15 pmBHD-IAD
15h 40m1 stop
Aer Lingus Logo
10:45 pm - 3:40 pmIAD-BHD
11h 55m1 stop
$5,002Aer Lingus
Find Deal
Tue, Oct 14 - Mon, Oct 20

American Airlines flights from Northern Ireland to Washington, D.C.

Our best American Airlines deals on Northern Ireland to Washington, D.C. flight tickets
American Airlines
Nov 20
BHD11:05 amBelfast City
13h 50m
1 stop
IAD7:55 pmWashington, D.C. Dulles Intl
Nov 24
IAD4:34 pmWashington, D.C. Dulles Intl
18h 31m
2 stops
BHD4:05 pmBelfast City
American Airlines
Nov 20
BHD11:05 amBelfast City
13h 50m
1 stop
IAD7:55 pmWashington, D.C. Dulles Intl
Nov 24
IAD6:20 pmWashington, D.C. Dulles Intl
11h 20m
1 stop
BHD10:40 amBelfast City
American Airlines
Dec 4
BHD9:05 amBelfast City
16h 06m
2 stops
DCA8:11 pmWashington, D.C. Reagan-National
Dec 8
DCA3:59 pmWashington, D.C. Reagan-National
13h 41m
2 stops
BHD10:40 amBelfast City

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
Oct 14
BHD1:40 pmBelfast City
11h 05m
1 stop
BWI7:45 pmBaltimore/Washington
Oct 20
BWI9:35 pmBaltimore/Washington
10h 20m
1 stop
BHD12:55 pmBelfast City
British Airways
Oct 12
BHD6:50 amBelfast City
17h 55m
1 stop
BWI7:45 pmBaltimore/Washington
Oct 20
BWI9:35 pmBaltimore/Washington
14h 55m
1 stop
BHD5:30 pmBelfast City
British Airways
Oct 12
BHD6:50 amBelfast City
17h 55m
1 stop
BWI7:45 pmBaltimore/Washington
Oct 21
BWI9:35 pmBaltimore/Washington
18h 10m
1 stop
BHD8:45 pmBelfast City

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 August 25, 2025.
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 10/7

7:25 am-3:20 pm

3 stops36h 55m

Washington, D.C. Dulles Intl

Tue 10/14

5:00 pm-9:30 pm

3 stops23h 30m

$629

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Tue 10/7

10:55 pm-5:40 pm

2 stops23h 45m

Baltimore/Washington

Tue 10/14

6:50 pm-4:40 pm

2 stops16h 50m

$639

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 10/7

7:25 am-3:20 pm

3 stops36h 55m

Washington, D.C. Dulles Intl

Tue 10/14

5:00 pm-7:25 pm

2 stops21h 25m

$676

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Tue 10/7

4:40 pm-5:40 pm

3 stops30h 00m

Baltimore/Washington

Tue 10/14

6:50 pm-4:40 pm

2 stops16h 50m

$746

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 11/20

11:05 am-7:55 pm

1 stop13h 50m

Washington, D.C. Dulles Intl

Mon 11/24

4:34 pm-4:05 pm

2 stops18h 31m

$762

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 11/20

11:05 am-7:55 pm

1 stop13h 50m

Washington, D.C. Dulles Intl

Mon 11/24

6:20 pm-10:40 am

1 stop11h 20m

$766

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 12/4

9:05 am-8:11 pm

2 stops16h 06m

Washington, D.C. Reagan-National

Mon 12/8

3:59 pm-10:40 am

2 stops13h 41m

$768

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Sat 9/6

6:30 am-6:14 pm

2 stops16h 44m

Washington, D.C. Reagan-National

Tue 9/9

4:45 pm-4:55 pm

2 stops19h 10m

$786

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 10/14

6:30 am-7:18 pm

2 stops17h 48m

Washington, D.C. Dulles Intl

Mon 10/20

5:10 pm-4:55 pm

2 stops18h 45m

$4,939

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 10/14

9:35 am-8:15 pm

1 stop15h 40m

Washington, D.C. Dulles Intl

Mon 10/20

10:45 pm-3:40 pm

1 stop11h 55m

$5,002

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

What is the cheapest airline that flies from Northern Ireland to Washington, D.C.?

Aer Lingus, KLM, and British Airways are the most popular carriers operating from Northern Ireland to Washington, D.C.

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.

Direct flights

None
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
Gettysburg
Arlington
National Harbor
Woodbridge
Waldorf
Tysons
Laurel
Silver Spring
Colonial Beach
Fredericksburg
Towson
Manassas
Rockville
Gaithersburg
Reston
Fairfax
Glen Burnie
Springfield
Linthicum Heights

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
Sat 8/30
Sat 9/6

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.