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Cheap flights from Washington, D.C. Dulles Intl Airport to Northern Ireland from £212

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. Dulles Intl Airport to Northern Ireland 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 Washington, D.C. Dulles Intl Airport to Northern Ireland

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
19:15 - 12:00IAD  Washington, D.C. Dulles Intl-BHD Belfast City
11h 45m1 stop London Heathrow
British Airways Logo
09:40 - 20:20BHD  Belfast City-IAD Washington, D.C. Dulles Intl
15h 40m1 stop London Heathrow
£564British Airways
Wed, 7 Oct - Mon, 12 Oct
Multiple Airlines Logo
23:20 - 16:20IAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
12h 00m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
20:15 - 15:10BFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
47h 55m3 stops London Luton Madrid Barajas Lisbon Humberto Delgado
£572Multiple Airlines
Tue, 1 Sep - Mon, 7 Sep
Multiple Airlines Logo
20:30 - 23:25IAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
21h 55m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
06:45 - 15:45BFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
38h 00m3 stops Malaga Casablanca Mohamed V Riyadh King Khaled Intl
£574Multiple Airlines
Sat, 19 Sep - Sat, 26 Sep
Multiple Airlines Logo
20:30 - 21:25IAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
19h 55m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
10:25 - 05:20BFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
47h 55m3 stops Liverpool J. Lennon Madrid Barajas Bogotá El Dorado
£584Multiple Airlines
Sat, 17 Oct - Thu, 22 Oct
Multiple Airlines Logo
20:30 - 21:25IAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
19h 55m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
21:10 - 19:00BFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
26h 50m2 stops Alicante Casablanca Mohamed V
£590Multiple Airlines
Sat, 17 Oct - Thu, 22 Oct
Multiple Airlines Logo
20:30 - 23:25IAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
21h 55m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Manchester
Multiple Airlines Logo
10:25 - 05:20BFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
47h 55m3 stops Liverpool J. Lennon Madrid Barajas Bogotá El Dorado
£591Multiple Airlines
Sat, 17 Oct - Thu, 22 Oct
Multiple Airlines Logo
20:30 - 20:30IAD  Washington, D.C. Dulles Intl-BHD Belfast City
19h 00m2 stops Reykjavik Keflavik Intl London Gatwick
Multiple Airlines Logo
08:05 - 19:00BHD  Belfast City-IAD Washington, D.C. Dulles Intl
39h 55m3 stops London Luton Madrid Barajas Casablanca Mohamed V
£598Multiple Airlines
Mon, 21 Sep - Tue, 6 Oct
Multiple Airlines Logo
23:20 - 21:00IAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
16h 40m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
20:15 - 15:10BFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
47h 55m3 stops London Luton Madrid Barajas Lisbon Humberto Delgado
£606Multiple Airlines
Sun, 27 Sep - Mon, 12 Oct
Multiple Airlines Logo
23:20 - 21:00IAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
16h 40m2 stops Reykjavik Keflavik Intl Glasgow Intl
Multiple Airlines Logo
15:35 - 19:20BFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
32h 45m2 stops London Stansted Reykjavik Keflavik Intl
£611Multiple Airlines
Sun, 27 Sep - Mon, 12 Oct
Multiple Airlines Logo
20:30 - 20:55IAD  Washington, D.C. Dulles Intl-BFS Belfast Intl
19h 25m2 stops Reykjavik Keflavik Intl Manchester
Multiple Airlines Logo
06:10 - 22:15BFS  Belfast Intl-IAD Washington, D.C. Dulles Intl
21h 05m2 stops London Gatwick Reykjavik Keflavik Intl
£612Multiple Airlines
Mon, 28 Sep - Wed, 7 Oct

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KLM flights from Washington, D.C. Dulles Intl Airport to Northern Ireland

Our best KLM deals on Washington, D.C. Dulles Intl Airport to Northern Ireland flight tickets
KLM
27 Jan
IAD19:50Washington, D.C. Dulles Intl
16h 00m
2 stops
BHD16:50Belfast City
3 Feb
BHD09:40Belfast City
18h 22m
2 stops
IAD23:02Washington, D.C. Dulles Intl
£757
KLM
21 Sept
IAD12:25Washington, D.C. Dulles Intl
15h 55m
2 stops
BHD09:20Belfast City
6 Oct
BHD09:50Belfast City
18h 26m
2 stops
IAD23:16Washington, D.C. Dulles Intl
£758
KLM
29 Jan
IAD19:50Washington, D.C. Dulles Intl
16h 00m
2 stops
BHD16:50Belfast City
2 Feb
BHD09:40Belfast City
19h 40m
2 stops
IAD00:20Washington, D.C. Dulles Intl
£794

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

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Northern Ireland flight tickets
American Airlines
28 Jan
IAD17:46Washington, D.C. Dulles Intl
14h 04m
2 stops
BHD12:50Belfast City
2 Feb
BHD08:45Belfast City
16h 10m
1 stop
IAD19:55Washington, D.C. Dulles Intl
£772
American Airlines
28 Jan
IAD17:46Washington, D.C. Dulles Intl
14h 04m
2 stops
BHD12:50Belfast City
2 Feb
BHD08:45Belfast City
19h 27m
2 stops
IAD23:12Washington, D.C. Dulles Intl
£779

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. Dulles Intl Airport 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 6 August 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

Washington, D.C.Belfast

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

IADBHD

Washington, D.C. Dulles Intl

Wed 7/10

19:15-12:00

1 stop11h 45m

Belfast City

Mon 12/10

09:40-20:20

1 stop15h 40m

£564

Washington, D.C.Belfast

IAD Washington, D.C. Dulles Intl - BFS Belfast Intl

IADBFS

Washington, D.C. Dulles Intl

Tue 1/9

23:20-16:20

2 stops12h 00m

Belfast Intl

Mon 7/9

20:15-15:10

3 stops47h 55m

£572

Washington, D.C.Belfast

IAD Washington, D.C. Dulles Intl - BFS Belfast Intl

IADBFS

Washington, D.C. Dulles Intl

Sat 19/9

20:30-23:25

2 stops21h 55m

Belfast Intl

Sat 26/9

06:45-15:45

3 stops38h 00m

£574

Washington, D.C.Belfast

IAD Washington, D.C. Dulles Intl - BFS Belfast Intl

IADBFS

Washington, D.C. Dulles Intl

Sat 17/10

20:30-21:25

2 stops19h 55m

Belfast Intl

Thu 22/10

10:25-05:20

3 stops47h 55m

£584

Washington, D.C.Belfast

IAD Washington, D.C. Dulles Intl - BFS Belfast Intl

IADBFS

Washington, D.C. Dulles Intl

Sat 17/10

20:30-21:25

2 stops19h 55m

Belfast Intl

Thu 22/10

21:10-19:00

2 stops26h 50m

£590

Washington, D.C.Belfast

IAD Washington, D.C. Dulles Intl - BFS Belfast Intl

IADBFS

Washington, D.C. Dulles Intl

Sat 17/10

20:30-23:25

3 stops21h 55m

Belfast Intl

Thu 22/10

10:25-05:20

3 stops47h 55m

£591

Washington, D.C.Belfast

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

IADBHD

Washington, D.C. Dulles Intl

Mon 21/9

20:30-20:30

2 stops19h 00m

Belfast City

Tue 6/10

08:05-19:00

3 stops39h 55m

£598

Washington, D.C.Belfast

IAD Washington, D.C. Dulles Intl - BFS Belfast Intl

IADBFS

Washington, D.C. Dulles Intl

Sun 27/9

23:20-21:00

2 stops16h 40m

Belfast Intl

Mon 12/10

20:15-15:10

3 stops47h 55m

£606

Washington, D.C.Belfast

IAD Washington, D.C. Dulles Intl - BFS Belfast Intl

IADBFS

Washington, D.C. Dulles Intl

Sun 27/9

23:20-21:00

2 stops16h 40m

Belfast Intl

Mon 12/10

15:35-19:20

2 stops32h 45m

£611

Washington, D.C.Belfast

IAD Washington, D.C. Dulles Intl - BFS Belfast Intl

IADBFS

Washington, D.C. Dulles Intl

Mon 28/9

20:30-20:55

2 stops19h 25m

Belfast Intl

Wed 7/10

06:10-22:15

2 stops21h 05m

£612

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. Dulles Intl Airport 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. Dulles Intl to Northern Ireland?

Aer Lingus is the most popular carrier operating from Washington, D.C. Dulles Intl to Northern Ireland

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

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

Fastest flight time

11h 10m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Northern Ireland takes 11h 10m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Northern Ireland. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Northern Ireland.
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Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Northern Ireland

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Northern Ireland?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Northern Ireland are updated daily.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to Northern Ireland.

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

    The travel and health documents you'll need for your trip to Northern Ireland may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Northern Ireland. It is always advisable to seek advice from your airline or a trusted 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?

Finding the right flight to Northern Ireland from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Northern Ireland quick and easy, saving you time and money.

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

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