Cheap flights from Washington, D.C. to Northern Ireland from £236

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Northern Ireland departing on 23/8. 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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Find the cheapest flights from Washington, D.C. to Northern Ireland

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
20:30 - 21:30
IAD
-
BFS
20h 00m
2 stops
Multiple Airlines Logo
22:10 - 15:10
BFS
-
IAD
46h 00m
3 stops
£547Multiple Airlines
Sun, 19 Apr - Sun, 26 Apr
Multiple Airlines Logo
20:30 - 21:30
IAD
-
BFS
20h 00m
2 stops
Multiple Airlines Logo
07:35 - 15:10
BFS
-
IAD
36h 35m
3 stops
£551Multiple Airlines
Sun, 26 Apr - Tue, 12 May
Multiple Airlines Logo
20:30 - 23:20
IAD
-
BFS
21h 50m
3 stops
Multiple Airlines Logo
13:50 - 15:10
BFS
-
IAD
30h 20m
3 stops
£591Multiple Airlines
Mon, 6 Apr - Thu, 16 Apr
Multiple Airlines Logo
20:30 - 17:20
IAD
-
BHD
15h 50m
2 stops
Multiple Airlines Logo
11:05 - 15:10
BHD
-
IAD
33h 05m
3 stops
£601Multiple Airlines
Sun, 26 Apr - Tue, 12 May
British Airways Logo
21:30 - 13:35
IAD
-
BHD
11h 05m
1 stop
British Airways Logo
09:40 - 19:40
BHD
-
IAD
15h 00m
1 stop
£678British Airways
Wed, 2 Sep - Tue, 15 Sep
British Airways Logo
21:35 - 14:35
BWI
-
BHD
12h 00m
1 stop
British Airways Logo
10:05 - 17:15
BHD
-
BWI
12h 10m
1 stop
£678British Airways
Sun, 6 Sep - Wed, 16 Sep
American Airlines Logo
15:26 - 10:30
IAD
-
BHD
14h 04m
2 stops
American Airlines Logo
13:45 - 20:20
BHD
-
IAD
11h 35m
1 stop
£702American Airlines
Sun, 26 Apr - Tue, 12 May
American Airlines Logo
18:21 - 14:35
BWI
-
BHD
15h 14m
2 stops
American Airlines Logo
10:05 - 00:08
BHD
-
BWI
19h 03m
2 stops
£702American Airlines
Sun, 6 Sep - Wed, 16 Sep
KLM Logo
13:45 - 09:20
DCA
-
BHD
14h 35m
2 stops
KLM Logo
09:50 - 21:50
BHD
-
DCA
17h 00m
2 stops
£740KLM
Wed, 26 Aug - Wed, 2 Sep
KLM Logo
13:40 - 09:20
DCA
-
BHD
14h 40m
2 stops
KLM Logo
09:50 - 22:22
BHD
-
DCA
17h 32m
2 stops
£762KLM
Tue, 28 Apr - Tue, 5 May

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

Our best British Airways deals on Washington, D.C. to Northern Ireland flight tickets
British Airways
2 Sept
IAD21:30Washington, D.C. Dulles Intl
11h 05m
1 stop
BHD13:35Belfast City
15 Sept
BHD09:40Belfast City
15h 00m
1 stop
IAD19:40Washington, D.C. Dulles Intl
£678
British Airways
24 Aug
IAD17:40Washington, D.C. Dulles Intl
14h 15m
1 stop
BHD12:55Belfast City
31 Aug
BHD19:35Belfast City
29h 45m
1 stop
IAD20:20Washington, D.C. Dulles Intl
£689
British Airways
23 Aug
IAD17:40Washington, D.C. Dulles Intl
11h 50m
1 stop
BHD10:30Belfast City
1 Sept
BHD06:30Belfast City
18h 50m
1 stop
IAD20:20Washington, D.C. Dulles Intl
£693

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

Our best American Airlines deals on Washington, D.C. to Northern Ireland flight tickets
American Airlines
26 Apr
IAD15:26Washington, D.C. Dulles Intl
14h 04m
2 stops
BHD10:30Belfast City
12 May
BHD13:45Belfast City
11h 35m
1 stop
IAD20:20Washington, D.C. Dulles Intl
£702
American Airlines
21 Apr
DCA15:15Washington, D.C. Reagan-National
14h 30m
2 stops
BHD10:45Belfast City
28 Apr
BHD09:40Belfast City
17h 49m
2 stops
DCA22:29Washington, D.C. Reagan-National
£712
American Airlines
6 Sept
BWI17:38Baltimore/Washington
19h 02m
2 stops
BHD17:40Belfast City
13 Sept
BHD11:00Belfast City
18h 08m
2 stops
BWI00:08Baltimore/Washington
£739

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. to Northern Ireland 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 24 March 2026.
Use the filters below to find and compare flights from Washington, D.C. to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 19/4

20:30-21:30

2 stops20h 00m

Belfast Intl

Sun 26/4

22:10-15:10

3 stops46h 00m

£547

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 26/4

20:30-21:30

2 stops20h 00m

Belfast Intl

Tue 12/5

07:35-15:10

3 stops36h 35m

£551

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 6/4

20:30-23:20

3 stops21h 50m

Belfast Intl

Thu 16/4

13:50-15:10

3 stops30h 20m

£591

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 26/4

20:30-17:20

2 stops15h 50m

Belfast City

Tue 12/5

11:05-15:10

3 stops33h 05m

£601

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 2/9

21:30-13:35

1 stop11h 05m

Belfast City

Tue 15/9

09:40-19:40

1 stop15h 00m

£678
Fastest return journey

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Sun 6/9

21:35-14:35

1 stop12h 00m

Belfast City

Wed 16/9

10:05-17:15

1 stop12h 10m

£678

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 26/4

15:26-10:30

2 stops14h 04m

Belfast City

Tue 12/5

13:45-20:20

1 stop11h 35m

£702

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Sun 6/9

18:21-14:35

2 stops15h 14m

Belfast City

Wed 16/9

10:05-00:08

2 stops19h 03m

£702

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Wed 26/8

13:45-09:20

2 stops14h 35m

Belfast City

Wed 2/9

09:50-21:50

2 stops17h 00m

£740

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Tue 28/4

13:40-09:20

2 stops14h 40m

Belfast City

Tue 5/5

09:50-22:22

2 stops17h 32m

£762

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 Northern Ireland from

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

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 Washington, D.C. to Northern Ireland?

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

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

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

Fastest flight time

10h 20m

Direct flights

None
The fastest flight from Washington, D.C. to Northern Ireland takes 10h 20m
There are no direct flights from Washington, D.C. to Northern Ireland. There are no popular flight routes from Washington, D.C. to Northern Ireland.
  • When did momondo last update prices for flights from Washington, D.C. to Northern Ireland?

    Prices for flights from Washington, D.C. to Northern Ireland were last updated today.

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

    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 Washington, D.C. to Northern Ireland.

  • What documentation or ID do you need to fly to Northern Ireland?

    The required travel and health documents for your Northern Ireland trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Northern Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

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 Washington, D.C. to Northern Ireland for you.

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

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

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

momondo helps you find the best flight between Washington, D.C. and Northern Ireland by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Northern Ireland, momondo offers a useful price alert feature which will track prices for flights to Northern Ireland from Washington, D.C. and alert you when they change.

An easier way to manage your Northern Ireland trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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1 adult
Thu 23/4
Thu 30/4

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Popular Cities in Northern Ireland

Popular flights according to clicks in the last 7 days on momondo