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Cheap flights from Northern Ireland to Washington, D.C. from £241

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 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — WAS
12 Okt — 19 Okt1
1 adult
1 adult, Economy

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 12 September 2025.

Round-trip from

£465

One-way from

£241
6/10-13/10
  • 6/10-13/10
  • 4 total stops
  • 36h 40m total
  • Northern Ireland to Washington, D.C.
Search Deals
14/10
  • 14/10
  • 3 total stops
  • 49h 45m total
  • Northern Ireland to Washington, D.C.
Search Deals

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

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 12 September 2025.

Mo 6/1006:45BFS - BWI
2 stops15h 55mMultiple Airlines
Mo 13/1018:50BWI - BFS
2 stops20h 45mMultiple Airlines
Deal found 10/9£465
Do 20/1106:35BHD - IAD
1 stop14h 00mAmerican Airlines
Mo 24/1114:16IAD - BHD
2 stops20h 49mAmerican Airlines
Deal found 11/9£495
Do 4/1210:40BHD - DCA
2 stops16h 30mAmerican Airlines
Mo 8/1215:54DCA - BHD
2 stops13h 46mAmerican Airlines
Deal found 10/9£498
Mo 6/1006:30BHD - IAD
1 stop14h 05mDelta
Mo 13/1012:09IAD - BHD
2 stops23h 46mDelta
Deal found 10/9£500
Mo 6/1006:30BHD - BWI
2 stops15h 24mDelta
Mo 13/1017:39BWI - BHD
2 stops18h 16mDelta
Deal found 10/9£504
Mo 6/1006:40BHD - BWI
1 stop18h 05mAmerican Airlines
Mo 13/1019:45BWI - BHD
2 stops16h 45mAmerican Airlines
Deal found 10/9£512
Mo 6/1015:25BHD - IAD
2 stops32h 29mMultiple Airlines
Mo 13/1017:41IAD - BHD
2 stops14h 14mMultiple Airlines
Deal found 10/9£524
Mo 6/1006:40BHD - BWI
2 stops16h 50mMultiple Airlines
Mo 13/1021:35BWI - BHD
1 stop13h 05mMultiple Airlines
Deal found 10/9£551
Mo 27/1007:50BFS - IAD
3 stops35h 45mMultiple Airlines
Mo 3/1117:30IAD - BFS
2 stops22h 40mMultiple Airlines
Deal found 11/9£559
Mo 6/1013:50BHD - IAD
1 stop11h 25mBritish Airways
Mo 13/1017:41IAD - BHD
2 stops14h 14mBritish Airways
Deal found 10/9£560
Mo 6/1009:50BHD - BWI
1 stop14h 55mBritish Airways
Mo 13/1021:35BWI - BHD
1 stop13h 05mBritish Airways
Deal found 10/9£608
Sa 25/1006:30BHD - IAD
1 stop14h 05mKLM
Sa 1/1119:05IAD - BHD
1 stop21h 55mKLM
Deal found 10/9£680

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 12 September 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

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Mo 6/10

06:45-17:40

2 stops15h 55m

Baltimore/Washington

Mo 13/10

18:50-20:35

2 stops20h 45m

£465

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Do 20/11

15:05-19:55

1 stop33h 50m

Washington, D.C. Dulles Intl

Mo 24/11

18:20-10:40

1 stop11h 20m

£495

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Do 4/12

10:40-22:10

2 stops16h 30m

Washington, D.C. Reagan-National

Mo 8/12

15:54-10:40

2 stops13h 46m

£498

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mo 6/10

06:30-15:35

1 stop14h 05m

Washington, D.C. Dulles Intl

Mo 13/10

12:09-16:55

2 stops23h 46m

£500

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Mo 6/10

06:30-16:54

2 stops15h 24m

Baltimore/Washington

Mo 13/10

17:39-16:55

2 stops18h 16m

£504

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Mo 6/10

06:40-19:45

1 stop18h 05m

Baltimore/Washington

Mo 13/10

19:45-17:30

2 stops16h 45m

£512

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mo 6/10

15:25-18:54

2 stops32h 29m

Washington, D.C. Dulles Intl

Mo 13/10

17:41-12:55

2 stops14h 14m

£524

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Fr 6/3

11:30-00:19

2 stops17h 49m

Baltimore/Washington

Di 10/3

21:35-14:50

1 stop13h 15m

£529

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Mo 6/10

06:40-18:30

2 stops16h 50m

Baltimore/Washington

Mo 13/10

21:35-15:40

1 stop13h 05m

£551

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Mo 27/10

07:50-15:35

3 stops35h 45m

Washington, D.C. Dulles Intl

Mo 3/11

17:30-21:10

2 stops22h 40m

£559

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 17 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 12 September 2025.

When flying from Northern Ireland to Washington, D.C., the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 24m. Fly via American Airlines or Delta to get the fastest option. Airlines will cover a distance of 3348 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 - Baltimore/Washington or Belfast City - Washington, D.C. Reagan-National 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.

  • What is the cheapest month to book a flight from Northern Ireland to Washington, D.C.?

    Currently, January is the cheapest month in which you can book a flight from Northern Ireland to Washington, D.C. (average of £599). Flying from Northern Ireland to Washington, D.C. in July is currently the most expensive (average of £947). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
College Park
Tysons

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.
Heathrow to Dulles Intl flights
Gatwick to Dulles Intl flights
Heathrow to Reagan-National flights
London City to Dulles Intl flights
Gatwick to Reagan-National flights
Stansted to Dulles Intl flights
Luton to Dulles Intl flights
London City to Reagan-National flights
Manchester to Dulles Intl flights
Edinburgh to Dulles Intl flights
Manchester to Reagan-National flights
Edinburgh to Reagan-National flights
Glasgow Intl to Dulles Intl flights
Birmingham to Dulles Intl flights
Leeds to Dulles Intl flights
Glasgow Intl to Reagan-National flights
Birmingham to Reagan-National flights
Newcastle upon Tyne to Dulles Intl flights
Newcastle upon Tyne to Reagan-National flights
Inverness to Dulles Intl flights
Belfast City to Dulles Intl flights
Southend to Dulles Intl flights
Leeds to Reagan-National flights
Belfast City to Reagan-National flights
Southampton to Dulles Intl flights
Belfast Intl to Dulles Intl flights
Bristol to Dulles Intl flights
Aberdeen to Dulles Intl flights
Grimsby to Dulles Intl flights
Norwich to Reagan-National flights
Inverness to Reagan-National flights
Cardiff to Reagan-National flights
Bristol to Reagan-National flights
Norwich to Dulles Intl flights
Cardiff to Dulles Intl flights
Exeter to Dulles Intl flights
Grimsby to Reagan-National flights
Southampton to Reagan-National flights
Doncaster to Dulles Intl flights
Aberdeen to Reagan-National flights

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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