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Cheap flights from Northern Ireland to Washington, D.C. from $967

This is the cheapest round-trip 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 3/9. 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

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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.
Delta Logo
6:30 am - 11:44 pm
BHD
-
DCA
21h 14m
2 stops
Delta Logo
6:30 pm - 4:40 pm
DCA
-
BHD
18h 10m
2 stops
$967Delta
Mon, Mar 9 - Mon, Mar 16

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
Feb 18
BHD12:25 pmBelfast City
16h 25m
2 stops
DCA11:50 pmWashington, D.C. Reagan-National
Feb 22
DCA8:45 pmWashington, D.C. Reagan-National
36h 30m
2 stops
BHD2:15 pmBelfast City
$1,286
British Airways
Feb 18
BHD11:25 amBelfast City
15h 05m
2 stops
DCA9:30 pmWashington, D.C. Reagan-National
Feb 22
DCA10:45 pmWashington, D.C. Reagan-National
34h 30m
2 stops
BHD2:15 pmBelfast City
$1,288
British Airways
Feb 12
BHD9:05 amBelfast City
14h 43m
2 stops
DCA6:48 pmWashington, D.C. Reagan-National
Feb 16
DCA2:59 pmWashington, D.C. Reagan-National
14h 41m
2 stops
BHD10:40 amBelfast City
$1,449

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 February 10, 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

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Mon 3/9

6:30 am-11:44 pm

2 stops21h 14m

Washington, D.C. Reagan-National

Mon 3/16

6:30 pm-4:40 pm

2 stops18h 10m

$967

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 05m

Direct flights

None
The fastest flight from Northern Ireland to Washington, D.C. Reagan-National Airport takes 15h 05m
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.
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  • 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.

  • 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
Colonial Beach
Tysons
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?

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.

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