Cheap flights from Northern Ireland to Washington, D.C. from $394

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 9/4. 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 round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:10 pm - 3:45 pm
BFS
-
IAD
23h 35m
2 stops
Multiple Airlines Logo
5:15 pm - 11:15 pm
IAD
-
BFS
25h 00m
2 stops
$894Multiple Airlines
Wed, Aug 12 - Wed, Aug 19
Multiple Airlines Logo
10:45 pm - 3:24 pm
BFS
-
IAD
21h 39m
2 stops
Multiple Airlines Logo
8:30 pm - 10:20 pm
IAD
-
BFS
20h 50m
3 stops
$929Multiple Airlines
Wed, Aug 12 - Wed, Aug 19
Multiple Airlines Logo
9:10 pm - 3:45 pm
BFS
-
IAD
23h 35m
2 stops
Multiple Airlines Logo
5:15 pm - 7:15 pm
IAD
-
BFS
21h 00m
2 stops
$951Multiple Airlines
Wed, Aug 12 - Wed, Aug 19
Multiple Airlines Logo
5:55 am - 9:14 pm
BFS
-
IAD
20h 19m
3 stops
Multiple Airlines Logo
8:30 pm - 10:20 pm
IAD
-
BFS
20h 50m
3 stops
$955Multiple Airlines
Wed, Aug 12 - Wed, Aug 19
Multiple Airlines Logo
6:00 pm - 7:20 pm
BFS
-
IAD
30h 20m
2 stops
Multiple Airlines Logo
8:30 pm - 7:55 pm
IAD
-
BFS
18h 25m
2 stops
$1,064Multiple Airlines
Sun, Aug 9 - Sun, Aug 16
Multiple Airlines Logo
7:20 am - 8:24 pm
BFS
-
IAD
18h 04m
2 stops
Multiple Airlines Logo
8:30 pm - 9:50 pm
IAD
-
BFS
20h 20m
2 stops
$1,107Multiple Airlines
Fri, Aug 14 - Fri, Aug 21
Multiple Airlines Logo
7:20 am - 8:24 pm
BFS
-
IAD
18h 04m
2 stops
Multiple Airlines Logo
5:05 pm - 11:20 pm
IAD
-
BFS
25h 15m
3 stops
$1,109Multiple Airlines
Fri, Aug 14 - Fri, Aug 21
Multiple Airlines Logo
7:35 am - 9:14 pm
BFS
-
IAD
18h 39m
3 stops
Multiple Airlines Logo
9:45 pm - 4:10 pm
IAD
-
BFS
13h 25m
2 stops
$1,116Multiple Airlines
Wed, Aug 12 - Wed, Aug 19
Multiple Airlines Logo
9:35 am - 8:35 pm
BFS
-
IAD
40h 00m
3 stops
Multiple Airlines Logo
4:20 pm - 10:50 pm
IAD
-
BFS
25h 30m
2 stops
$1,118Multiple Airlines
Sun, Aug 9 - Sun, Aug 16
Multiple Airlines Logo
7:20 am - 11:13 am
BFS
-
IAD
32h 53m
3 stops
Multiple Airlines Logo
5:05 pm - 11:20 pm
IAD
-
BFS
25h 15m
3 stops
$1,257Multiple Airlines
Fri, Aug 14 - Fri, Aug 21

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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 July 2, 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

Cheapest round-trip

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 8/12

9:10 pm-3:45 pm

2 stops23h 35m

Washington, D.C. Dulles Intl

Wed 8/19

5:15 pm-11:15 pm

2 stops25h 00m

$894

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 8/12

10:45 pm-3:24 pm

2 stops21h 39m

Washington, D.C. Dulles Intl

Wed 8/19

8:30 pm-10:20 pm

3 stops20h 50m

$929

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 8/12

9:10 pm-3:45 pm

2 stops23h 35m

Washington, D.C. Dulles Intl

Wed 8/19

5:15 pm-7:15 pm

2 stops21h 00m

$951

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 8/12

5:55 am-9:14 pm

3 stops20h 19m

Washington, D.C. Dulles Intl

Wed 8/19

8:30 pm-10:20 pm

3 stops20h 50m

$955

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sun 8/9

6:00 pm-7:20 pm

2 stops30h 20m

Washington, D.C. Dulles Intl

Sun 8/16

8:30 pm-7:55 pm

2 stops18h 25m

$1,064

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Fri 8/14

7:20 am-8:24 pm

2 stops18h 04m

Washington, D.C. Dulles Intl

Fri 8/21

8:30 pm-9:50 pm

2 stops20h 20m

$1,107

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Fri 8/14

7:20 am-8:24 pm

2 stops18h 04m

Washington, D.C. Dulles Intl

Fri 8/21

5:05 pm-11:20 pm

3 stops25h 15m

$1,109
Quickest round-trip

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 8/12

7:35 am-9:14 pm

3 stops18h 39m

Washington, D.C. Dulles Intl

Wed 8/19

9:45 pm-4:10 pm

2 stops13h 25m

$1,116

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sun 8/9

9:35 am-8:35 pm

3 stops40h 00m

Washington, D.C. Dulles Intl

Sun 8/16

4:20 pm-10:50 pm

2 stops25h 30m

$1,118

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Fri 8/14

7:20 am-11:13 am

3 stops32h 53m

Washington, D.C. Dulles Intl

Fri 8/21

5:05 pm-11:20 pm

3 stops25h 15m

$1,257

Flights are sorted by cheapest round-trip 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. 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 40% 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

17h 35m

Direct flights

None
The fastest flight from Northern Ireland to Washington, D.C. Dulles Intl Airport takes 17h 35m
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.

Frequently asked questions about flying from Northern Ireland to Washington, D.C. Dulles Intl Airport

  • 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
Arlington
Gettysburg
Winchester
Waldorf
Laurel
Woodbridge
Fredericksburg
Gaithersburg
Linthicum Heights
Rockville
Colonial Beach
Towson
Manassas
Silver Spring
Sterling
Tysons
Springfield
Bethesda

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.

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

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Sat 8/1
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