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Cheap flights from Northern Ireland to Washington, D.C. 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 Northern Ireland to Washington, D.C. departing on 3/1. 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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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:50 am - 2:35 pm
BFS
-
IAD
35h 45m
3 stops
Multiple Airlines Logo
7:40 pm - 12:00 pm
IAD
-
BFS
11h 20m
2 stops
$717Multiple Airlines
Mon, Feb 23 - Mon, Mar 2
Multiple Airlines Logo
7:50 am - 2:35 pm
BFS
-
IAD
35h 45m
3 stops
Multiple Airlines Logo
7:40 pm - 9:30 pm
IAD
-
BFS
20h 50m
3 stops
$728Multiple Airlines
Mon, Feb 23 - Mon, Mar 2
Multiple Airlines Logo
5:20 pm - 6:30 pm
BHD
-
IAD
30h 10m
3 stops
Multiple Airlines Logo
7:40 pm - 8:30 pm
IAD
-
BHD
19h 50m
2 stops
$879Multiple Airlines
Mon, Feb 23 - Mon, Mar 2
Multiple Airlines Logo
5:20 pm - 2:35 pm
BHD
-
IAD
26h 15m
3 stops
Multiple Airlines Logo
7:40 pm - 8:50 pm
IAD
-
BHD
20h 10m
3 stops
$984Multiple Airlines
Mon, Feb 23 - Mon, Mar 2
British Airways Logo
9:15 am - 3:35 pm
BHD
-
IAD
11h 20m
1 stop
British Airways Logo
2:03 pm - 2:15 pm
IAD
-
BHD
19h 12m
2 stops
$1,000British Airways
Mon, Feb 23 - Mon, Mar 2
British Airways Logo
8:00 pm - 7:55 pm
BHD
-
IAD
28h 55m
1 stop
British Airways Logo
10:45 pm - 2:15 pm
IAD
-
BHD
11h 30m
1 stop
$1,002British Airways
Thu, Mar 5 - Mon, Mar 9
British Airways Logo
8:00 pm - 3:35 pm
BHD
-
IAD
24h 35m
1 stop
British Airways Logo
7:20 pm - 10:40 am
IAD
-
BHD
11h 20m
1 stop
$1,003British Airways
Thu, Mar 5 - Mon, Mar 9
Multiple Airlines Logo
2:40 pm - 3:35 pm
BHD
-
IAD
29h 55m
1 stop
Multiple Airlines Logo
6:20 pm - 10:40 am
IAD
-
BHD
11h 20m
1 stop
$1,010Multiple Airlines
Mon, Feb 23 - Mon, Mar 2
British Airways Logo
10:40 am - 7:55 pm
BHD
-
IAD
14h 15m
1 stop
British Airways Logo
4:46 pm - 10:40 am
IAD
-
BHD
13h 54m
2 stops
$1,016British Airways
Thu, Mar 5 - Mon, Mar 9
KLM Logo
6:30 am - 4:28 pm
BHD
-
IAD
14h 58m
2 stops
KLM Logo
7:35 pm - 4:45 pm
IAD
-
BHD
16h 10m
2 stops
$1,051KLM
Mon, Feb 23 - Mon, Mar 2

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

Our best British Airways deals on Northern Ireland to Washington, D.C. Dulles Intl Airport flight tickets
British Airways
Feb 23
BHD9:15 amBelfast City
11h 20m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Mar 2
IAD2:03 pmWashington, D.C. Dulles Intl
19h 12m
2 stops
BHD2:15 pmBelfast City
$1,000
British Airways
Mar 5
BHD8:00 pmBelfast City
28h 55m
1 stop
IAD7:55 pmWashington, D.C. Dulles Intl
Mar 9
IAD10:45 pmWashington, D.C. Dulles Intl
11h 30m
1 stop
BHD2:15 pmBelfast City
$1,002
British Airways
Mar 5
BHD8:00 pmBelfast City
24h 35m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Mar 9
IAD7:20 pmWashington, D.C. Dulles Intl
11h 20m
1 stop
BHD10:40 amBelfast City
$1,003

momondo Fare Finder

 
Customize your flight search to find flights from Northern Ireland to Washington, D.C. Dulles Intl Airport 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 February 5, 2026.
Use the filters below to find and compare flights from Northern Ireland to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Mon 2/23

7:50 am-2:35 pm

3 stops35h 45m

Washington, D.C. Dulles Intl

Mon 3/2

7:40 pm-12:00 pm

2 stops11h 20m

$717

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Mon 2/23

7:50 am-2:35 pm

3 stops35h 45m

Washington, D.C. Dulles Intl

Mon 3/2

7:40 pm-9:30 pm

3 stops20h 50m

$728

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 2/23

5:20 pm-6:30 pm

3 stops30h 10m

Washington, D.C. Dulles Intl

Mon 3/2

7:40 pm-8:30 pm

2 stops19h 50m

$879

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 2/23

5:20 pm-2:35 pm

3 stops26h 15m

Washington, D.C. Dulles Intl

Mon 3/2

7:40 pm-8:50 pm

3 stops20h 10m

$984

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 2/23

9:15 am-3:35 pm

1 stop11h 20m

Washington, D.C. Dulles Intl

Mon 3/2

2:03 pm-2:15 pm

2 stops19h 12m

$1,000

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 3/5

8:00 pm-7:55 pm

1 stop28h 55m

Washington, D.C. Dulles Intl

Mon 3/9

10:45 pm-2:15 pm

1 stop11h 30m

$1,002

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 3/5

8:00 pm-3:35 pm

1 stop24h 35m

Washington, D.C. Dulles Intl

Mon 3/9

7:20 pm-10:40 am

1 stop11h 20m

$1,003

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 2/23

2:40 pm-3:35 pm

1 stop29h 55m

Washington, D.C. Dulles Intl

Mon 3/2

6:20 pm-10:40 am

1 stop11h 20m

$1,010

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 3/5

10:40 am-7:55 pm

1 stop14h 15m

Washington, D.C. Dulles Intl

Mon 3/9

4:46 pm-10:40 am

2 stops13h 54m

$1,016

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 2/23

6:30 am-4:28 pm

2 stops14h 58m

Washington, D.C. Dulles Intl

Mon 3/2

7:35 pm-4:45 pm

2 stops16h 10m

$1,051

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 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. Dulles Intl Airport

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

You could potentially save up to 5% on your flight if you consider stops on a Northern Ireland to Washington, D.C. Dulles Intl Airport flight.

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

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

Fastest flight time

10h 45m

Direct flights

None
The fastest flight from Northern Ireland to Washington, D.C. Dulles Intl Airport takes 10h 45m
There are no direct flights from Northern Ireland to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from Northern Ireland to Washington, D.C. Dulles Intl Airport.
Search flight deals

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Northern Ireland to Washington, D.C. Dulles Intl Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

    The travel and health documents required for your trip to Washington, D.C. Dulles Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Dulles Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Winchester
Waldorf
Woodbridge
Tysons
Laurel
Colonial Beach
Silver Spring
Towson
Fredericksburg
Gaithersburg
Rockville
Manassas
Springfield
Sterling
Fairfax
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?

Yes. All flights to Washington, D.C. from Northern Ireland on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Northern Ireland to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Washington, D.C. from Northern Ireland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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