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Cheap flights from Northern Ireland to Washington, D.C. from £308

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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — WAS
11 Dec — 18 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 11 November 2025.

Round-trip from

£689

One-way from

£308
British Airways
  • British Airways
  • 4/3-11/3
  • 2 total stops
  • 29h 15m total
  • Northern Ireland to Washington, D.C.
Search Deals
1/12
  • 1/12
  • 3 total stops
  • 53h 00m 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 11 November 2025.

Thu 4/1206:35BHD - DCA
2 stops19h 23mAmerican Airlines
Mon 8/1215:54DCA - BHD
2 stops17h 21mAmerican Airlines
Deal found 8/11£749
Mon 10/1110:15BHD - BWI
3 stops29h 09mMultiple Airlines
Tue 11/1119:40BWI - BHD
2 stops16h 10mMultiple Airlines
Deal found 9/11£934
Mon 10/1110:20BFS - BWI
3 stops29h 04mMultiple Airlines
Tue 11/1119:40BWI - BFS
2 stops15h 20mMultiple Airlines
Deal found 9/11£958
Thu 20/1109:05BHD - IAD
1 stop11h 30mAmerican Airlines
Mon 24/1107:59IAD - BHD
2 stops21h 41mAmerican Airlines
Deal found 9/11£962
Mon 10/1108:20BHD - IAD
2 stops16h 10mAer Lingus
Tue 11/1117:05IAD - BHD
2 stops15h 45mAer Lingus
Deal found 9/11£983
Mon 10/1120:55BFS - IAD
2 stops26h 35mMultiple Airlines
Tue 11/1122:20IAD - BFS
1 stop13h 40mMultiple Airlines
Deal found 9/11£1,100
Thu 20/1112:00BHD - IAD
2 stops12h 55mBritish Airways
Mon 24/1121:45IAD - BHD
2 stops13h 35mBritish Airways
Deal found 9/11£1,104
Mon 10/1106:30BHD - IAD
3 stops34h 15mMultiple Airlines
Tue 11/1118:05IAD - BHD
1 stop21h 55mMultiple Airlines
Deal found 9/11£1,113
Mon 10/1106:30BHD - DCA
2 stops15h 30mMultiple Airlines
Tue 11/1117:45DCA - BHD
2 stops39h 30mMultiple Airlines
Deal found 9/11£1,814
Mon 10/1106:35BHD - BWI
2 stops16h 56mBritish Airways
Tue 11/1120:35BWI - BHD
1 stop9h 55mBritish Airways
Deal found 9/11£2,490

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 11 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.

BHD - IAD

BHDIAD

Belfast City

Wed 4/3

06:35-19:55

1 stop18h 20m

Washington, D.C. Dulles Intl

Wed 11/3

19:20-10:15

1 stop10h 55m

£689

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Wed 4/3

11:25-22:59

2 stops16h 34m

Baltimore/Washington

Wed 11/3

21:35-14:15

1 stop12h 40m

£716

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 4/3

06:30-16:30

2 stops15h 00m

Washington, D.C. Dulles Intl

Wed 11/3

19:59-21:00

2 stops21h 01m

£732

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Fri 6/3

06:45-18:45

1 stop17h 00m

Baltimore/Washington

Tue 10/3

21:35-14:50

1 stop13h 15m

£742

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 4/12

06:35-20:58

2 stops19h 23m

Washington, D.C. Reagan-National

Mon 8/12

15:54-14:15

2 stops17h 21m

£749

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 1/1

07:25-08:29

2 stops30h 04m

Baltimore/Washington

Mon 12/1

11:30-13:35

2 stops21h 05m

£760

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Thu 1/1

10:15-08:29

2 stops27h 14m

Baltimore/Washington

Mon 12/1

11:30-20:10

2 stops27h 40m

£794

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 1/1

21:25-15:35

2 stops23h 10m

Washington, D.C. Dulles Intl

Mon 12/1

17:30-19:05

2 stops20h 35m

£938

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 20/11

09:05-19:55

1 stop15h 50m

Washington, D.C. Dulles Intl

Mon 24/11

21:45-16:05

1 stop13h 20m

£962

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 1/1

06:30-22:50

2 stops21h 20m

Washington, D.C. Reagan-National

Mon 12/1

12:55-16:50

2 stops22h 55m

£1,007

Flights are sorted by cheapest return flights first.

Deals found on 9/11

Showing 1-10 of 41 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 11 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. Fly via British Airways, Delta, or American Airlines 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 City - Washington, D.C. Dulles Intl, Belfast City - Washington, D.C. Reagan-National 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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Southampton to Reagan-National flights
Exeter to Dulles Intl flights
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Inverness to Reagan-National flights
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Doncaster to Dulles Intl flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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