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Cheap flights from Washington, D.C. Dulles Intl Airport to Northern Ireland from $415

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 7/2. 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. Dulles Intl Airport to Northern Ireland

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:30 pm - 7:50 pm
IAD
-
BFS
18h 20m
3 stops
Multiple Airlines Logo
8:15 pm - 3:10 pm
BFS
-
IAD
47h 55m
3 stops
$757Multiple Airlines
Tue, May 5 - Tue, May 12
Multiple Airlines Logo
8:30 pm - 7:40 pm
IAD
-
BFS
18h 10m
2 stops
Multiple Airlines Logo
8:15 pm - 3:10 pm
BFS
-
IAD
47h 55m
3 stops
$763Multiple Airlines
Tue, May 5 - Tue, May 12
Multiple Airlines Logo
8:30 pm - 11:25 pm
IAD
-
BFS
21h 55m
2 stops
Multiple Airlines Logo
10:10 pm - 3:10 pm
BFS
-
IAD
46h 00m
3 stops
$790Multiple Airlines
Sat, Apr 25 - Sun, May 3
Multiple Airlines Logo
1:20 pm - 11:10 pm
IAD
-
BFS
28h 50m
2 stops
Multiple Airlines Logo
8:50 am - 11:35 am
BFS
-
IAD
31h 45m
2 stops
$942Multiple Airlines
Tue, May 5 - Tue, May 12
British Airways Logo
9:30 pm - 1:35 pm
IAD
-
BHD
11h 05m
1 stop
British Airways Logo
10:05 am - 7:40 pm
BHD
-
IAD
14h 35m
1 stop
$955British Airways
Wed, Aug 19 - Wed, Aug 26
Multiple Airlines Logo
3:45 pm - 4:20 pm
IAD
-
BFS
19h 35m
3 stops
Multiple Airlines Logo
9:05 pm - 3:10 pm
BFS
-
IAD
47h 05m
3 stops
$960Multiple Airlines
Tue, May 19 - Mon, May 25
British Airways Logo
5:35 pm - 9:00 am
IAD
-
BHD
10h 25m
1 stop
British Airways Logo
1:45 pm - 8:20 pm
BHD
-
IAD
11h 35m
1 stop
$965British Airways
Tue, May 5 - Tue, May 12
Multiple Airlines Logo
5:17 pm - 4:20 pm
IAD
-
BFS
18h 03m
2 stops
Multiple Airlines Logo
9:05 pm - 3:10 pm
BFS
-
IAD
47h 05m
3 stops
$970Multiple Airlines
Tue, May 19 - Mon, May 25
American Airlines Logo
5:35 pm - 7:50 pm
IAD
-
BHD
21h 15m
1 stop
American Airlines Logo
11:35 am - 11:59 pm
BHD
-
IAD
17h 24m
2 stops
$1,007American Airlines
Wed, May 6 - Wed, May 13
KLM Logo
6:50 pm - 4:55 pm
IAD
-
BHD
17h 05m
2 stops
KLM Logo
5:30 pm - 3:35 pm
BHD
-
IAD
27h 05m
1 stop
$1,012KLM
Tue, May 5 - Tue, May 12

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

Our best Aer Lingus deals on Washington, D.C. Dulles Intl Airport to Northern Ireland flight tickets
Aer Lingus
Apr 30
IAD5:15 pmWashington, D.C. Dulles Intl
16h 45m
2 stops
BHD3:00 pmBelfast City
May 6
BHD6:20 pmBelfast City
26h 25m
2 stops
IAD3:45 pmWashington, D.C. Dulles Intl
$1,191
Aer Lingus
May 19
IAD9:05 pmWashington, D.C. Dulles Intl
14h 30m
2 stops
BHD4:35 pmBelfast City
May 25
BHD6:20 pmBelfast City
26h 25m
2 stops
IAD3:45 pmWashington, D.C. Dulles Intl
$1,210
Aer Lingus
May 9
IAD8:40 pmWashington, D.C. Dulles Intl
13h 15m
2 stops
BHD2:55 pmBelfast City
May 16
BHD6:50 amBelfast City
17h 20m
2 stops
IAD7:10 pmWashington, D.C. Dulles Intl
$1,216

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

Our best British Airways deals on Washington, D.C. Dulles Intl Airport to Northern Ireland flight tickets
British Airways
Aug 19
IAD9:30 pmWashington, D.C. Dulles Intl
11h 05m
1 stop
BHD1:35 pmBelfast City
Aug 26
BHD10:05 amBelfast City
14h 35m
1 stop
IAD7:40 pmWashington, D.C. Dulles Intl
$955
British Airways
May 5
IAD5:35 pmWashington, D.C. Dulles Intl
10h 25m
1 stop
BHD9:00 amBelfast City
May 12
BHD1:45 pmBelfast City
11h 35m
1 stop
IAD8:20 pmWashington, D.C. Dulles Intl
$965
British Airways
Aug 19
IAD9:30 pmWashington, D.C. Dulles Intl
13h 10m
1 stop
BHD3:40 pmBelfast City
Aug 26
BHD11:35 amBelfast City
13h 45m
1 stop
IAD8:20 pmWashington, D.C. Dulles Intl
$977

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated April 11, 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 round-trip

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 5/5

8:30 pm-7:50 pm

3 stops18h 20m

Belfast Intl

Tue 5/12

8:15 pm-3:10 pm

3 stops47h 55m

$757

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 5/5

8:30 pm-7:40 pm

2 stops18h 10m

Belfast Intl

Tue 5/12

8:15 pm-3:10 pm

3 stops47h 55m

$763

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 4/25

8:30 pm-11:25 pm

2 stops21h 55m

Belfast Intl

Sun 5/3

10:10 pm-3:10 pm

3 stops46h 00m

$790

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 5/5

1:20 pm-11:10 pm

2 stops28h 50m

Belfast Intl

Tue 5/12

8:50 am-11:35 am

2 stops31h 45m

$942

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 8/19

9:30 pm-1:35 pm

1 stop11h 05m

Belfast City

Wed 8/26

10:05 am-7:40 pm

1 stop14h 35m

$955

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 5/19

3:45 pm-4:20 pm

3 stops19h 35m

Belfast Intl

Mon 5/25

9:05 pm-3:10 pm

3 stops47h 05m

$960
Quickest round-trip

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 5/5

5:35 pm-9:00 am

1 stop10h 25m

Belfast City

Tue 5/12

1:45 pm-8:20 pm

1 stop11h 35m

$965

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 5/19

5:17 pm-4:20 pm

2 stops18h 03m

Belfast Intl

Mon 5/25

9:05 pm-3:10 pm

3 stops47h 05m

$970

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 5/6

5:35 pm-7:50 pm

1 stop21h 15m

Belfast City

Wed 5/13

11:35 am-11:59 pm

2 stops17h 24m

$1,007

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 5/5

6:50 pm-4:55 pm

2 stops17h 05m

Belfast City

Tue 5/12

5:30 pm-3:35 pm

1 stop27h 05m

$1,012

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 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

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

You could potentially save up to 3% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Northern Ireland flight.

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

10h 15m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Northern Ireland takes 10h 15m
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 many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Northern Ireland?

  • 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.

Best airlines flying from Washington, D.C. Dulles Intl Airport to Northern Ireland

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Northern Ireland with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $652Free CancellationRating
6.7
7,871 reviews
Search British Airways flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to Northern Ireland. Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Washington, D.C. to Northern Ireland with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

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

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

Of course. momondo tracks the price of Washington, D.C. to Northern Ireland 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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