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Cheap flights from Northern Ireland to Washington, D.C. from £330

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 5/10. 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

Find the cheapest flights from Northern Ireland to Washington, D.C.

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
08:20 - 22:15BFS  Belfast Intl-BWI Baltimore/Washington
18h 55m2 stops London Gatwick Reykjavik Keflavik Intl
Multiple Airlines Logo
23:20 - 21:05BWI  Baltimore/Washington-BFS Belfast Intl
16h 45m2 stops Reykjavik Keflavik Intl London Gatwick
£552Multiple Airlines
Tue, 29 Sep - Tue, 6 Oct
Multiple Airlines Logo
06:40 - 19:25BFS  Belfast Intl-BWI Baltimore/Washington
41h 45m3 stops London Stansted Milan Malpensa Reykjavik Keflavik Intl
Multiple Airlines Logo
20:30 - 15:15BWI  Baltimore/Washington-BFS Belfast Intl
13h 45m2 stops Reykjavik Keflavik Intl Manchester
£600Multiple Airlines
Tue, 29 Sep - Tue, 6 Oct
British Airways Logo
14:20 - 23:10BHD  Belfast City-DCA Washington, D.C. Reagan-National
13h 50m2 stops London Heathrow New York John F Kennedy Intl
British Airways Logo
13:39 - 10:10DCA  Washington, D.C. Reagan-National-BHD Belfast City
15h 31m2 stops Chicago O'Hare Intl London Heathrow
£655British Airways
Thu, 17 Sep - Thu, 1 Oct
KLM Logo
17:30 - 15:35BHD  Belfast City-IAD Washington, D.C. Dulles Intl
27h 05m1 stop Amsterdam Schiphol
KLM Logo
17:30 - 09:20IAD  Washington, D.C. Dulles Intl-BHD Belfast City
10h 50m1 stop Amsterdam Schiphol
£660KLM
Thu, 17 Sep - Thu, 1 Oct
KLM Logo
09:50 - 15:35BHD  Belfast City-IAD Washington, D.C. Dulles Intl
10h 45m1 stop Amsterdam Schiphol
KLM Logo
18:26 - 16:55IAD  Washington, D.C. Dulles Intl-BHD Belfast City
17h 29m2 stops New York John F Kennedy Intl Amsterdam Schiphol
£673KLM
Thu, 17 Sep - Fri, 2 Oct
Delta Logo
09:50 - 15:35BHD  Belfast City-IAD Washington, D.C. Dulles Intl
10h 45m1 stop Amsterdam Schiphol
Delta Logo
11:10 - 09:20IAD  Washington, D.C. Dulles Intl-BHD Belfast City
17h 10m2 stops Detroit Metropolitan Wayne County Amsterdam Schiphol
£673Delta
Thu, 17 Sep - Thu, 1 Oct
Delta Logo
09:50 - 15:35BHD  Belfast City-IAD Washington, D.C. Dulles Intl
10h 45m1 stop Amsterdam Schiphol
Delta Logo
12:25 - 16:55IAD  Washington, D.C. Dulles Intl-BHD Belfast City
23h 30m2 stops New York John F Kennedy Intl Amsterdam Schiphol
£673Delta
Fri, 18 Sep - Fri, 2 Oct
Multiple Airlines Logo
09:50 - 15:35BHD  Belfast City-IAD Washington, D.C. Dulles Intl
10h 45m1 stop Amsterdam Schiphol
Multiple Airlines Logo
17:30 - 16:55IAD  Washington, D.C. Dulles Intl-BHD Belfast City
18h 25m1 stop Amsterdam Schiphol
£673Multiple Airlines
Thu, 17 Sep - Fri, 2 Oct
Multiple Airlines Logo
09:50 - 15:35BHD  Belfast City-IAD Washington, D.C. Dulles Intl
10h 45m1 stop Amsterdam Schiphol
Multiple Airlines Logo
17:30 - 16:55IAD  Washington, D.C. Dulles Intl-BHD Belfast City
18h 25m1 stop Amsterdam Schiphol
£673Multiple Airlines
Fri, 18 Sep - Fri, 2 Oct
Multiple Airlines Logo
09:50 - 15:35BHD  Belfast City-IAD Washington, D.C. Dulles Intl
10h 45m1 stop Amsterdam Schiphol
Multiple Airlines Logo
17:30 - 16:55IAD  Washington, D.C. Dulles Intl-BHD Belfast City
18h 25m1 stop Amsterdam Schiphol
£673Multiple Airlines
Fri, 18 Sep - Thu, 1 Oct

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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
17 Sept
BHD14:20Belfast City
13h 50m
2 stops
DCA23:10Washington, D.C. Reagan-National
1 Oct
DCA13:39Washington, D.C. Reagan-National
15h 31m
2 stops
BHD10:10Belfast City
£655
British Airways
30 Sept
BHD20:35Belfast City
27h 15m
2 stops
IAD18:50Washington, D.C. Dulles Intl
4 Oct
IAD17:45Washington, D.C. Dulles Intl
11h 45m
1 stop
BHD10:30Belfast City
£686
British Airways
30 Sept
BHD20:35Belfast City
27h 15m
2 stops
IAD18:50Washington, D.C. Dulles Intl
4 Oct
IAD17:45Washington, D.C. Dulles Intl
11h 45m
1 stop
BHD10:30Belfast City
£688

KLM flights from Northern Ireland to Washington, D.C.

Our best KLM deals on Northern Ireland to Washington, D.C. flight tickets
KLM
17 Sept
BHD17:30Belfast City
27h 05m
1 stop
IAD15:35Washington, D.C. Dulles Intl
1 Oct
IAD17:30Washington, D.C. Dulles Intl
10h 50m
1 stop
BHD09:20Belfast City
£660
KLM
17 Sept
BHD09:50Belfast City
10h 45m
1 stop
IAD15:35Washington, D.C. Dulles Intl
30 Sept
IAD12:26Washington, D.C. Dulles Intl
15h 54m
2 stops
BHD09:20Belfast City
£676
KLM
18 Sept
BHD09:50Belfast City
17h 41m
2 stops
BWI22:31Baltimore/Washington
30 Sept
BWI12:30Baltimore/Washington
15h 50m
2 stops
BHD09:20Belfast City
£677

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 16 August 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 return flight

BelfastBaltimore

BFS Belfast Intl - BWI Baltimore/Washington

BFSBWI

Belfast Intl

Tue 29/9

08:20-22:15

2 stops18h 55m

Baltimore/Washington

Tue 6/10

23:20-21:05

2 stops16h 45m

£552

BelfastBaltimore

BFS Belfast Intl - BWI Baltimore/Washington

BFSBWI

Belfast Intl

Tue 29/9

06:40-19:25

3 stops41h 45m

Baltimore/Washington

Tue 6/10

20:30-15:15

2 stops13h 45m

£600

BelfastWashington, D.C.

BHD Belfast City - DCA Washington, D.C. Reagan-National

BHDDCA

Belfast City

Thu 17/9

14:20-23:10

2 stops13h 50m

Washington, D.C. Reagan-National

Thu 1/10

13:39-10:10

2 stops15h 31m

£655

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Thu 17/9

17:30-15:35

1 stop27h 05m

Washington, D.C. Dulles Intl

Thu 1/10

17:30-09:20

1 stop10h 50m

£660

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Thu 17/9

09:50-15:35

1 stop10h 45m

Washington, D.C. Dulles Intl

Fri 2/10

18:26-16:55

2 stops17h 29m

£673
Fastest return journey

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Thu 17/9

09:50-15:35

1 stop10h 45m

Washington, D.C. Dulles Intl

Thu 1/10

11:10-09:20

2 stops17h 10m

£673

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Fri 18/9

09:50-15:35

1 stop10h 45m

Washington, D.C. Dulles Intl

Fri 2/10

12:25-16:55

2 stops23h 30m

£673

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Thu 17/9

09:50-15:35

1 stop10h 45m

Washington, D.C. Dulles Intl

Fri 2/10

17:30-16:55

1 stop18h 25m

£673

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Fri 18/9

09:50-15:35

1 stop10h 45m

Washington, D.C. Dulles Intl

Fri 2/10

17:30-16:55

1 stop18h 25m

£673

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Fri 18/9

09:50-15:35

1 stop10h 45m

Washington, D.C. Dulles Intl

Thu 1/10

17:30-16:55

1 stop18h 25m

£673

Flights are sorted by cheapest return 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.?

British Airways and KLM 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.

Fastest flight time

13h 50m

Direct flights

None
The fastest flight from Northern Ireland to Washington, D.C. takes 13h 50m
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..
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Frequently asked questions about flying 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. are refreshed on a daily basis.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
College Park
Springfield
Fairfax
Arlington
Gettysburg
Linthicum Heights
National Harbor
Ellicott City
Cambridge
Glen Burnie
Westminster
Laurel
Lutherville Timonium
Lexington Park
Woodbridge
Bethesda
Silver Spring
Rockville
Landover

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Northern Ireland to Washington, D.C. for you.

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

momondo does allow users to show only those flights to Washington, D.C. from Northern Ireland which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to Washington, D.C. from Northern Ireland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from Northern Ireland to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

An easier way to manage your Washington, D.C. trip

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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.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport