HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Northern Ireland

$657+ Cheap flights from Reagan-National (DCA) to Northern Ireland

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/1. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — BFS
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Reagan-National to Northern Ireland with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Reagan-National to Northern Ireland

Cheapest flights from Reagan-National to Northern Ireland
Explore the most affordable flight options available from Reagan-National to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 28, 2025.

This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/264:35 pmDCA - BHD
2 stops19h 15mDelta
Wed 12/36:30 amBHD - DCA
2 stops18h 10mDelta
Deal found 10/28$669
This American Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:35 pmDCA - BHD
2 stops14h 55mAmerican Airlines
Wed 1/76:35 amBHD - DCA
2 stops15h 33mAmerican Airlines
Deal found 10/26$686
This Mytrip deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/611:05 amDCA - BFS
2 stops18h 50mMultiple Airlines
Fri 12/125:30 pmBFS - DCA
3 stops27h 01mMultiple Airlines
Deal found 10/26$709
This KLM deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/125:30 pmDCA - BHD
2 stops18h 20mKLM
Sun 11/166:30 amBHD - DCA
2 stops21h 26mKLM
Deal found 10/26$721
This oojo deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/62:54 pmDCA - BHD
2 stops13h 16mBritish Airways
Fri 12/127:35 pmBHD - DCA
2 stops26h 57mBritish Airways
Deal found 10/26$877
This FlightHub deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/255:45 pmDCA - BHD
2 stops16h 05mBritish Airways
Mon 12/17:25 pmBHD - DCA
2 stops27h 07mBritish Airways
Deal found 10/25$906
This Mytrip deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/254:10 pmDCA - BFS
2 stops24h 30mMultiple Airlines
Mon 12/18:40 amBFS - DCA
2 stops18h 16mMultiple Airlines
Deal found 10/25$961
This Cheapflightsfares deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/33:54 pmDCA - BHD
2 stops12h 16mBritish Airways
Wed 12/1012:25 pmBHD - DCA
2 stops14h 05mBritish Airways
Deal found 10/27$1,066
This Ovago deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/216:10 amDCA - BHD
2 stops21h 15mBritish Airways
Tue 12/211:25 amBHD - DCA
2 stops15h 18mBritish Airways
Deal found 10/27$1,071
This Ovago deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2212:26 pmDCA - BHD
2 stops15h 44mBritish Airways
Thu 11/276:35 amBHD - DCA
2 stops14h 20mBritish Airways
Deal found 10/27$1,326
This Mytrip deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:00 amDCA - BFS
3 stops33h 25mMultiple Airlines
Thu 12/187:15 amBFS - DCA
3 stops44h 20mMultiple Airlines
Deal found 10/27$1,479
This Cheapflightsfares deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/181:44 pmDCA - BHD
2 stops15h 36mBritish Airways
Sun 12/289:10 amBHD - DCA
2 stops16h 06mBritish Airways
Deal found 10/27$3,717

Cheap flight deals from Reagan-National to Northern Ireland

Keep the following information in mind while searching for Reagan-National to Northern Ireland flight deals. Data was last updated October 28, 2025.

Round-trip from

$657
(American Airlines)

Popular in

June

Cheapest in

February
From Washington, D.C. Reagan-National to Northern Ireland
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($183 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($45 potential savings vs. average RT price).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National to Northern Ireland 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, Cheapflights users made 2,558,603 searches. Data last updated October 28, 2025.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to Northern Ireland that are best for you.

Fly from

Reagan-National

Fly to

Northern Ireland

Route

Depart

Return

Price

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Thu 1/1

11:32 am-10:20 am

2 stops17h 48m

Belfast City

Sat 1/24

9:15 am-9:58 pm

2 stops17h 43m

$657

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Wed 2/11

1:59 pm-9:10 am

2 stops14h 11m

Belfast City

Fri 3/27

8:45 am-8:00 pm

2 stops15h 15m

$657

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sun 3/8

6:59 pm-1:55 pm

2 stops14h 56m

Belfast City

Sat 3/21

11:35 am-10:46 pm

2 stops15h 11m

$657

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Mon 3/16

5:23 pm-10:40 am

2 stops13h 17m

Belfast City

Sun 3/22

12:10 pm-10:46 pm

2 stops14h 36m

$657

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sat 1/17

3:59 pm-9:10 am

2 stops12h 11m

Belfast City

Sat 1/24

9:15 am-8:59 pm

2 stops16h 44m

$669

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Wed 11/12

5:30 pm-4:50 pm

2 stops18h 20m

Belfast City

Sun 11/16

6:30 am-6:00 pm

2 stops16h 30m

$669

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Sat 1/17

4:39 pm-11:10 am

2 stops13h 31m

Belfast City

Sun 1/25

6:30 am-4:50 pm

2 stops15h 20m

$669

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Wed 11/26

4:35 pm-4:50 pm

2 stops19h 15m

Belfast City

Wed 12/3

6:30 am-4:36 pm

2 stops15h 06m

$669

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Sat 12/6

11:05 am-10:55 am

2 stops18h 50m

Belfast Intl

Fri 12/12

5:30 pm-3:31 pm

3 stops27h 01m

$709

Washington, D.C.Belfast

DCA - BFS

DCABFS

Washington, D.C. Reagan-National

Tue 11/25

4:10 pm-9:40 pm

2 stops24h 30m

Belfast Intl

Mon 12/1

8:40 am-9:56 pm

2 stops18h 16m

$961

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 12 results
1
2

Best time to book a flight from Reagan-National to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Reagan-National with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to Northern Ireland
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to Northern Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Washington, D.C. Reagan-National Airport to Northern Ireland?

    Departing from Washington, D.C. Reagan-National Airport to Northern Ireland will take you 17h 48m. The distance from Washington, D.C. Reagan-National Airport to Northern Ireland is about 3378 mi.

  • What are the most popular routes from Washington, D.C. Reagan-National Airport to Northern Ireland?

    The most popular route from Washington, D.C. Reagan-National Airport to Northern Ireland is Washington, D.C. Reagan-National - Belfast Intl. You may also consider Washington, D.C. Reagan-National - Belfast City or Washington, D.C. Reagan-National - Campbeltown Machrihanish.

  • Can I find deals for flights from Reagan-National to Northern Ireland that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Northern Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Northern Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to Northern Ireland.

  • Can I find deals for business class flights from Reagan-National to Northern Ireland?

    Yes. Cheapflights offers flight deals from Reagan-National to Northern Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Reagan-National to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Heathrow flights
Baltimore to Heathrow flights
Reagan-National to Heathrow flights
Dulles Intl to Gatwick flights
Dulles Intl to London City flights
Baltimore to Gatwick flights
Reagan-National to Gatwick flights
Dulles Intl to Stansted flights
Dulles Intl to Luton flights
Baltimore to Luton flights
Dulles Intl to Edinburgh flights
Baltimore to London City flights
Reagan-National to London City flights
Reagan-National to Luton flights
Baltimore to Edinburgh flights
Reagan-National to Edinburgh flights
Dulles Intl to Glasgow Intl flights
Dulles Intl to Manchester flights
Baltimore to Manchester flights
Reagan-National to Manchester flights
Baltimore to Stansted flights
Reagan-National to Glasgow Intl flights
Baltimore to Glasgow Intl flights
Reagan-National to Stansted flights
Dulles Intl to Belfast Intl flights
Dulles Intl to Liverpool flights
Dulles Intl to Leeds flights
Dulles Intl to Birmingham flights
Dulles Intl to Belfast City flights
Baltimore to Belfast Intl flights
Reagan-National to Belfast Intl flights
Reagan-National to Birmingham flights
Reagan-National to Belfast City flights
Baltimore to Birmingham flights
Dulles Intl to Southampton flights
Baltimore to Belfast City flights
Dulles Intl to Southend flights
Dulles Intl to Bristol flights
Baltimore to Bristol flights
Baltimore to Liverpool flights
Reagan-National to Bristol flights
Baltimore to Leeds flights
Dulles Intl to Newcastle upon Tyne flights
Baltimore to Inverness flights
Dulles Intl to Inverness flights
Reagan-National to Inverness flights
Baltimore to Newcastle upon Tyne flights
Baltimore to Southampton flights
Dulles Intl to Cardiff flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.