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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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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
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
10:15 am - 10:27 am
BHD
-
BWI
29h 12m
3 stops
Multiple Airlines Logo
7:40 pm - 12:15 pm
BWI
-
BHD
11h 35m
2 stops
$954Multiple Airlines
Mon, Feb 23 - Mon, Mar 2
British Airways Logo
9:15 am - 8:43 pm
BHD
-
DCA
16h 28m
2 stops
British Airways Logo
6:14 pm - 2:15 pm
DCA
-
BHD
15h 01m
2 stops
$981British Airways
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
6:35 am - 4:25 pm
BHD
-
DCA
14h 50m
2 stops
British Airways Logo
10:45 pm - 10:40 am
DCA
-
BHD
30h 55m
2 stops
$995British Airways
Wed, Feb 18 - Sun, Feb 22
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
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
Virgin Atlantic Logo
9:50 am - 3:35 pm
BHD
-
IAD
10h 45m
1 stop
Virgin Atlantic Logo
6:00 am - 9:20 am
IAD
-
BHD
22h 20m
2 stops
$1,184Virgin Atlantic
Fri, Apr 3 - Tue, Apr 14

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

Our best British Airways deals on Northern Ireland to Washington, D.C. flight tickets
British Airways
Feb 23
BHD9:15 amBelfast City
16h 28m
2 stops
DCA8:43 pmWashington, D.C. Reagan-National
Mar 2
DCA6:14 pmWashington, D.C. Reagan-National
15h 01m
2 stops
BHD2:15 pmBelfast City
$981
British Airways
Feb 18
BHD6:35 amBelfast City
14h 50m
2 stops
DCA4:25 pmWashington, D.C. Reagan-National
Feb 22
DCA10:45 pmWashington, D.C. Reagan-National
30h 55m
2 stops
BHD10:40 amBelfast City
$995
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

momondo Fare Finder

 
Customize your flight search to find flights from Northern Ireland to Washington, D.C. 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 4, 2026.
Use the filters below to find and compare flights from Northern Ireland to Washington, D.C. 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

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Mon 2/23

10:15 am-10:27 am

3 stops29h 12m

Baltimore/Washington

Mon 3/2

7:40 pm-12:15 pm

2 stops11h 35m

$954

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Mon 2/23

9:15 am-8:43 pm

2 stops16h 28m

Washington, D.C. Reagan-National

Mon 3/2

6:14 pm-2:15 pm

2 stops15h 01m

$981

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 - DCA

BHDDCA

Belfast City

Wed 2/18

6:35 am-4:25 pm

2 stops14h 50m

Washington, D.C. Reagan-National

Sun 2/22

10:45 pm-10:40 am

2 stops30h 55m

$995

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

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

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Fri 4/3

9:50 am-3:35 pm

1 stop10h 45m

Washington, D.C. Dulles Intl

Tue 4/14

6:00 am-9:20 am

2 stops22h 20m

$1,184

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.

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. flights?

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

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

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

Fastest flight time

10h 45m

Direct flights

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

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

    Prices for flights from Northern Ireland to Washington, D.C. refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Northern Ireland to Washington, D.C..

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

    The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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
Waldorf
Woodbridge
Tysons
Laurel
Colonial Beach
Silver Spring
Towson
Fredericksburg
Gaithersburg
Rockville
Manassas
Springfield
Fairfax
Linthicum Heights
Bethesda
Glen Burnie

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?

All flight searches from Northern Ireland to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Northern Ireland to Washington, D.C..

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

Of course. momondo tracks the price of Northern Ireland to Washington, D.C. flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport