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Cheap flights from Northern Ireland to Washington, D.C. from £313

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/11. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — WAS
5 Dec — 12 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Northern Ireland to Washington, D.C.

Keep the following information in mind while searching for Northern Ireland to Washington, D.C. flight deals. Data was last updated 5 November 2025.

Round-trip from

£578

One-way from

£313
11/12-14/12
  • 11/12-14/12
  • 5 total stops
  • 62h 40m total
  • Northern Ireland to Washington, D.C.
Search Deals
21/11
  • 21/11
  • 2 total stops
  • 42h 20m total
  • Northern Ireland to Washington, D.C.
Search Deals

Find flight deals from Northern Ireland to Washington, D.C.

Enter your travel dates to find the best prices.

Cheapest flights from Northern Ireland to Washington, D.C.
Explore the most affordable flight options available from Northern Ireland to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 November 2025.

Thu 11/1221:00BFS - IAD
3 stops47h 15mMultiple Airlines
Sun 14/1222:30IAD - BFS
2 stops15h 25mMultiple Airlines
Deal found 4/11£578
Thu 13/1107:05BFS - IAD
2 stops16h 25mMultiple Airlines
Mon 17/1119:40IAD - BFS
2 stops18h 25mMultiple Airlines
Deal found 3/11£600
Thu 13/1107:00BHD - IAD
2 stops16h 30mMultiple Airlines
Mon 17/1119:40IAD - BHD
2 stops20h 10mMultiple Airlines
Deal found 3/11£604
Thu 13/1106:30BFS - BWI
2 stops17h 10mMultiple Airlines
Mon 17/1119:40BWI - BFS
2 stops19h 30mMultiple Airlines
Deal found 3/11£623
Thu 11/1207:25BHD - IAD
2 stops16h 05mMultiple Airlines
Sun 14/1219:40IAD - BHD
2 stops19h 50mMultiple Airlines
Deal found 4/11£659
Thu 11/1207:25BHD - BWI
2 stops16h 15mMultiple Airlines
Sun 14/1219:40BWI - BHD
2 stops19h 50mMultiple Airlines
Deal found 4/11£668
Thu 11/1206:30BFS - BWI
2 stops17h 10mMultiple Airlines
Sun 14/1219:40BWI - BFS
2 stops19h 30mMultiple Airlines
Deal found 4/11£671
Sun 23/1107:25BHD - BWI
2 stops16h 15mMultiple Airlines
Sun 30/1119:40BWI - BHD
2 stops19h 50mMultiple Airlines
Deal found 3/11£691
Thu 13/1107:25BHD - BWI
2 stops16h 15mMultiple Airlines
Mon 17/1119:40BWI - BHD
2 stops19h 50mMultiple Airlines
Deal found 3/11£699
Thu 4/1206:35BHD - DCA
2 stops16h 08mAmerican Airlines
Mon 8/1215:54DCA - BHD
2 stops17h 21mAmerican Airlines
Deal found 4/11£729
Mon 24/1109:15BHD - IAD
1 stop15h 40mAmerican Airlines
Mon 1/1221:45IAD - BHD
1 stop13h 20mAmerican Airlines
Deal found 3/11£737
Thu 6/1106:30BFS - IAD
2 stops17h 00mMultiple Airlines
Mon 10/1119:40IAD - BFS
2 stops20h 30mMultiple Airlines
Deal found 3/11£745

Cheapflights Fare Finder

 
Customise 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, Cheapflights users made 858,174 searches. Data last updated 5 November 2025.
Use the filters below to find and compare flights from Northern Ireland to Washington, D.C. that are best for you.

Fly from

Northern Ireland

Fly to

Washington, D.C.

Route

Depart

Return

Price

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 11/12

21:00-15:15

3 stops47h 15m

Washington, D.C. Dulles Intl

Sun 14/12

22:30-18:55

2 stops15h 25m

£578

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 11/12

07:25-18:40

2 stops16h 15m

Baltimore/Washington

Sun 14/12

19:40-20:30

2 stops19h 50m

£668

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Thu 11/12

06:30-18:40

2 stops17h 10m

Baltimore/Washington

Sun 14/12

19:40-20:10

2 stops19h 30m

£671

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 4/12

06:35-17:43

2 stops16h 08m

Washington, D.C. Reagan-National

Mon 8/12

15:54-14:15

2 stops17h 21m

£729

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 25/11

08:45-15:35

1 stop11h 50m

Washington, D.C. Dulles Intl

Tue 2/12

21:45-16:45

1 stop14h 00m

£737

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Fri 6/3

08:45-18:45

1 stop15h 00m

Baltimore/Washington

Tue 10/3

21:35-11:30

1 stop9h 55m

£742

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 24/11

11:30-23:07

2 stops16h 37m

Washington, D.C. Dulles Intl

Tue 2/12

21:45-14:50

1 stop12h 05m

£745

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 25/11

08:45-19:20

2 stops15h 35m

Washington, D.C. Dulles Intl

Tue 2/12

18:20-10:30

1 stop11h 10m

£747

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sun 23/11

06:30-20:54

2 stops19h 24m

Washington, D.C. Dulles Intl

Sun 30/11

20:45-22:25

2 stops20h 40m

£748

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Tue 25/11

10:00-19:51

2 stops14h 51m

Washington, D.C. Reagan-National

Mon 1/12

16:47-14:15

2 stops16h 28m

£748

Flights are sorted by cheapest return flights first.

Deals found on 3/11

Showing 1-10 of 60 results
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Best time to book a flight from Northern Ireland to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Northern Ireland with our price prediction graph.
Estimated return 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 Northern Ireland to Washington, D.C.

What is the cheapest time of day to fly from NIR to WAS?

Find hourly flight availability from Northern Ireland to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 5 November 2025.

When flying from Northern Ireland to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 36% versus a flight in the afternoon.

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to Washington, D.C.. 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 Northern Ireland to Washington, D.C.?

    There are many flights that can get you from Northern Ireland to Washington, D.C. in 15h 35m. Fly via American Airlines or British Airways to get the fastest option. Airlines will cover a distance of 3390 mi. This flight may include one or multiple stops.

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

    Most travelers choose Belfast Intl - Baltimore/Washington, Belfast City - Washington, D.C. Dulles Intl or Belfast City - Baltimore/Washington when deciding on the best route from Northern Ireland to Washington, D.C..

  • Can I find deals for flights from Northern Ireland to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Northern Ireland to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Northern Ireland to Washington, D.C.?

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

  • Can I find deals for business class flights from Northern Ireland to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Northern Ireland to Washington, D.C. 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

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Woodbridge
Arlington
Alexandria
College Park

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Northern Ireland to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
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Leeds to Reagan-National flights
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Cardiff to Reagan-National flights
Norwich to Reagan-National flights
Aberdeen to Reagan-National flights
Grimsby to Reagan-National flights
Bristol to Reagan-National flights
Inverness to Reagan-National flights
Norwich to Dulles Intl flights
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Fly with Cheapflights

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How does Cheapflights help users find flights from Northern Ireland to Washington, D.C.?

Deals for Northern Ireland to Washington, D.C. flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to Washington, D.C.?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Northern Ireland to Washington, D.C..

Can Cheapflights find flights from Northern Ireland to Washington, D.C. with no change fees?

Need flexible booking options for your flight to Washington, D.C. from Northern Ireland? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Northern Ireland to Washington, D.C. become cheaper?

Not ready to book yet? You can track prices for flights from Northern Ireland to Washington, D.C. on Cheapflights with our Price Alert feature and get notified when better prices are available.

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