Latest deals
FAQs
Price Alerts

Cheap flights from Northern Ireland to Washington, D.C. from $592

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 7/29. 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
0 bags

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
6:10 am - 10:28 pm
BFS
-
DCA
21h 18m
3 stops
Multiple Airlines Logo
12:45 pm - 7:15 pm
DCA
-
BFS
25h 30m
3 stops
$1,047Multiple Airlines
Thu, Jun 11 - Wed, Jun 17
American Airlines Logo
9:40 am - 11:14 pm
BHD
-
DCA
18h 34m
2 stops
American Airlines Logo
6:23 pm - 3:20 pm
DCA
-
BHD
15h 57m
2 stops
$1,053American Airlines
Tue, Jun 23 - Tue, Aug 11
American Airlines Logo
1:45 pm - 11:00 am
BHD
-
DCA
26h 15m
2 stops
American Airlines Logo
3:11 pm - 10:45 am
DCA
-
BHD
14h 34m
2 stops
$1,054American Airlines
Tue, Jun 23 - Tue, Aug 11
American Airlines Logo
6:30 am - 11:14 pm
BHD
-
DCA
21h 44m
2 stops
American Airlines Logo
2:59 pm - 10:45 am
DCA
-
BHD
14h 46m
2 stops
$1,057American Airlines
Tue, Jun 23 - Tue, Aug 11
Multiple Airlines Logo
6:10 am - 8:53 am
BFS
-
DCA
31h 43m
3 stops
Multiple Airlines Logo
6:55 pm - 7:15 pm
DCA
-
BFS
19h 20m
2 stops
$1,074Multiple Airlines
Thu, Jun 11 - Wed, Jun 17
Multiple Airlines Logo
6:10 am - 10:28 pm
BFS
-
DCA
21h 18m
3 stops
Multiple Airlines Logo
6:55 pm - 7:15 pm
DCA
-
BFS
19h 20m
2 stops
$1,076Multiple Airlines
Thu, Jun 11 - Wed, Jun 17
Multiple Airlines Logo
6:10 am - 8:53 am
BFS
-
DCA
31h 43m
3 stops
Multiple Airlines Logo
12:45 pm - 7:15 pm
DCA
-
BFS
25h 30m
3 stops
$1,093Multiple Airlines
Thu, Jun 11 - Wed, Jun 17
American Airlines Logo
1:45 pm - 11:14 pm
BHD
-
DCA
14h 29m
2 stops
American Airlines Logo
5:35 pm - 10:45 am
DCA
-
BHD
12h 10m
2 stops
$1,117American Airlines
Tue, Jun 23 - Tue, Aug 11
Multiple Airlines Logo
8:20 am - 10:28 pm
BFS
-
DCA
19h 08m
2 stops
Multiple Airlines Logo
6:55 pm - 7:15 pm
DCA
-
BFS
19h 20m
2 stops
$1,132Multiple Airlines
Thu, Jun 11 - Wed, Jun 17
British Airways Logo
11:00 am - 10:15 pm
BHD
-
DCA
16h 15m
2 stops
British Airways Logo
10:00 pm - 8:50 am
DCA
-
BHD
29h 50m
2 stops
$4,559British Airways
Sun, Sep 13 - Tue, Sep 15

American Airlines flights from Northern Ireland to Washington, D.C. Reagan-National Airport

Our best American Airlines deals on Northern Ireland to Washington, D.C. Reagan-National Airport flight tickets
American Airlines
Jun 23
BHD9:40 amBelfast City
18h 34m
2 stops
DCA11:14 pmWashington, D.C. Reagan-National
Aug 11
DCA6:23 pmWashington, D.C. Reagan-National
15h 57m
2 stops
BHD3:20 pmBelfast City
$1,053
American Airlines
Jun 23
BHD1:45 pmBelfast City
26h 15m
2 stops
DCA11:00 amWashington, D.C. Reagan-National
Aug 11
DCA3:11 pmWashington, D.C. Reagan-National
14h 34m
2 stops
BHD10:45 amBelfast City
$1,054
American Airlines
Jun 23
BHD6:30 amBelfast City
21h 44m
2 stops
DCA11:14 pmWashington, D.C. Reagan-National
Aug 11
DCA2:59 pmWashington, D.C. Reagan-National
14h 46m
2 stops
BHD10:45 amBelfast City
$1,057

British Airways flights from Northern Ireland to Washington, D.C. Reagan-National Airport

Our best British Airways deals on Northern Ireland to Washington, D.C. Reagan-National Airport flight tickets
British Airways
May 21
BHD12:45 pmBelfast City
15h 28m
2 stops
DCA11:13 pmWashington, D.C. Reagan-National
May 22
DCA10:14 amWashington, D.C. Reagan-National
17h 36m
2 stops
BHD8:50 amBelfast City
$3,975
British Airways
Sep 13
BHD11:00 amBelfast City
16h 15m
2 stops
DCA10:15 pmWashington, D.C. Reagan-National
Sep 15
DCA10:00 pmWashington, D.C. Reagan-National
29h 50m
2 stops
BHD8:50 amBelfast City
$4,559

momondo Fare Finder

 
Customize your flight search to find flights from Northern Ireland to Washington, D.C. Reagan-National 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 May 16, 2026.
Use the filters below to find and compare flights from Northern Ireland to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BelfastWashington, D.C.

BFS - DCA

BFSDCA

Belfast Intl

Thu 6/11

6:10 am-10:28 pm

3 stops21h 18m

Washington, D.C. Reagan-National

Wed 6/17

12:45 pm-7:15 pm

3 stops25h 30m

$1,047

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Tue 6/23

9:40 am-11:14 pm

2 stops18h 34m

Washington, D.C. Reagan-National

Tue 8/11

6:23 pm-3:20 pm

2 stops15h 57m

$1,053

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Tue 6/23

1:45 pm-11:00 am

2 stops26h 15m

Washington, D.C. Reagan-National

Tue 8/11

3:11 pm-10:45 am

2 stops14h 34m

$1,054

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Tue 6/23

6:30 am-11:14 pm

2 stops21h 44m

Washington, D.C. Reagan-National

Tue 8/11

2:59 pm-10:45 am

2 stops14h 46m

$1,057

BelfastWashington, D.C.

BFS - DCA

BFSDCA

Belfast Intl

Thu 6/11

6:10 am-8:53 am

3 stops31h 43m

Washington, D.C. Reagan-National

Wed 6/17

6:55 pm-7:15 pm

2 stops19h 20m

$1,074

BelfastWashington, D.C.

BFS - DCA

BFSDCA

Belfast Intl

Thu 6/11

6:10 am-10:28 pm

3 stops21h 18m

Washington, D.C. Reagan-National

Wed 6/17

6:55 pm-7:15 pm

2 stops19h 20m

$1,076

BelfastWashington, D.C.

BFS - DCA

BFSDCA

Belfast Intl

Thu 6/11

6:10 am-8:53 am

3 stops31h 43m

Washington, D.C. Reagan-National

Wed 6/17

12:45 pm-7:15 pm

3 stops25h 30m

$1,093
Quickest round-trip

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Tue 6/23

1:45 pm-11:14 pm

2 stops14h 29m

Washington, D.C. Reagan-National

Tue 8/11

5:35 pm-10:45 am

2 stops12h 10m

$1,117

BelfastWashington, D.C.

BFS - DCA

BFSDCA

Belfast Intl

Thu 6/11

8:20 am-10:28 pm

2 stops19h 08m

Washington, D.C. Reagan-National

Wed 6/17

6:55 pm-7:15 pm

2 stops19h 20m

$1,132

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Sun 9/13

11:00 am-10:15 pm

2 stops16h 15m

Washington, D.C. Reagan-National

Tue 9/15

10:00 pm-8:50 am

2 stops29h 50m

$4,559

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Cheap Northern Ireland to Washington, D.C. Reagan-National Airport flight deals and tips

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

Fastest flight time

15h 28m

Direct flights

None
The fastest flight from Northern Ireland to Washington, D.C. Reagan-National Airport takes 15h 28m
There are no direct flights from Northern Ireland to Washington, D.C. Reagan-National Airport. There are no popular flight routes from Northern Ireland to Washington, D.C. Reagan-National Airport.
Search flight deals

Frequently asked questions about flying from Northern Ireland to Washington, D.C. Reagan-National Airport

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

    Prices for flights from Northern Ireland to Washington, D.C. Reagan-National Airport were last updated today.

  • How old do you have to be to fly from Northern Ireland to Washington, D.C. Reagan-National 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. Reagan-National Airport.

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

    The required travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Reagan-National Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Frequently asked questions about flying from Northern Ireland to Washington, D.C. Reagan-National Airport

  • How do I get Price Alerts for flights from Northern Ireland to Washington, D.C. Reagan-National Airport?

    Price Alerts will notify you by email when the price for flights to Washington, D.C. Reagan-National Airport from Northern Ireland decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Northern Ireland to Washington, D.C. Reagan-National Airport with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

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
Laurel
Gaithersburg
Colonial Beach
Fredericksburg
Silver Spring
Towson
Rockville
Manassas
Linthicum Heights
Tysons
Bethesda
Springfield
Fairfax
College Park

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. momondo enables you to select and highlight flights to Washington, D.C. from Northern Ireland with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from Northern Ireland.

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

If you are not ready to book a flight from Northern Ireland to Washington, D.C. now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington, D.C. and let you know when they change.

An easier way to manage your Washington, D.C. Reagan-National Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 6/15
Mon 6/22
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington, D.C.