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Cheap flights from Northern Ireland to Washington, D.C. from £446

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — WAS
24 Aug — 31 Aug1
1 adult

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 19 August 2025.

Round-trip from

£446
1/10-8/10
  • 1/10-8/10
  • 4 total stops
  • 40h 00m 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 19 August 2025.

Wed 1/1006:00BFS - BWI
2 stops16h 40mMultiple Airlines
Wed 8/1018:50BWI - BFS
2 stops23h 20mMultiple Airlines
Deal found 17/8£446
Wed 1/1007:25BFS - IAD
3 stops36h 55mMultiple Airlines
Wed 8/1017:50IAD - BFS
3 stops23h 10mMultiple Airlines
Deal found 17/8£515
Thu 20/1106:35BHD - IAD
1 stop14h 00mAmerican Airlines
Mon 24/1116:34IAD - BHD
2 stops16h 41mAmerican Airlines
Deal found 18/8£586
Thu 4/1211:05BHD - DCA
2 stops16h 10mAmerican Airlines
Mon 8/1215:59DCA - BHD
2 stops13h 41mAmerican Airlines
Deal found 18/8£590
Thu 11/1206:30BHD - IAD
1 stop14h 35mDelta
Mon 29/1218:05IAD - BHD
1 stop21h 55mDelta
Deal found 19/8£661
Thu 11/1206:30BHD - BWI
2 stops21h 26mDelta
Mon 29/1218:50BWI - BHD
2 stops17h 00mDelta
Deal found 19/8£703
Thu 11/1210:40BHD - IAD
1 stop14h 15mMultiple Airlines
Mon 29/1217:50IAD - BHD
2 stops21h 25mMultiple Airlines
Deal found 19/8£705
Thu 11/1206:35BHD - IAD
2 stops17h 53mAmerican Airlines
Mon 29/1217:50IAD - BHD
2 stops17h 15mAmerican Airlines
Deal found 19/8£713
Thu 11/1209:05BHD - BWI
1 stop14h 40mMultiple Airlines
Mon 29/1218:06BWI - BHD
2 stops16h 59mMultiple Airlines
Deal found 19/8£714
Wed 20/816:05BHD - IAD
2 stops57h 43mMultiple Airlines
Wed 27/817:55IAD - BHD
1 stop16h 15mMultiple Airlines
Deal found 19/8£1,243
Wed 20/817:55BHD - IAD
2 stops26h 55mAer Lingus
Wed 27/821:00IAD - BHD
2 stops18h 55mAer Lingus
Deal found 19/8£1,285
Wed 20/813:50BHD - IAD
1 stop31h 05mBritish Airways
Wed 27/817:55IAD - BHD
1 stop9h 55mBritish Airways
Deal found 19/8£1,347

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 19 August 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

Wed 1/10

06:00-17:40

2 stops16h 40m

Baltimore/Washington

Wed 8/10

18:50-23:10

2 stops23h 20m

£446

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 1/10

07:25-15:20

3 stops36h 55m

Washington, D.C. Dulles Intl

Wed 8/10

17:50-22:00

3 stops23h 10m

£515

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 20/11

10:40-15:35

1 stop33h 55m

Washington, D.C. Dulles Intl

Mon 24/11

18:20-10:40

1 stop11h 20m

£586

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 4/12

11:05-22:15

2 stops16h 10m

Washington, D.C. Reagan-National

Mon 8/12

15:59-10:40

2 stops13h 41m

£590

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 11/12

06:30-16:05

1 stop14h 35m

Washington, D.C. Dulles Intl

Mon 29/12

18:05-21:00

1 stop21h 55m

£661

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 11/12

06:30-22:56

2 stops21h 26m

Baltimore/Washington

Mon 29/12

18:50-21:00

2 stops21h 10m

£703

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 11/12

11:05-18:45

1 stop12h 40m

Baltimore/Washington

Mon 29/12

18:06-16:05

2 stops16h 59m

£714

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 16/10

13:15-19:45

1 stop11h 30m

Baltimore/Washington

Wed 22/10

21:35-13:30

1 stop10h 55m

£3,379

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 16/10

13:15-19:45

1 stop11h 30m

Baltimore/Washington

Mon 20/10

21:35-12:55

1 stop10h 20m

£3,379

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 16/10

13:15-19:45

1 stop11h 30m

Baltimore/Washington

Tue 21/10

21:35-13:00

1 stop10h 25m

£3,379

Flights are sorted by cheapest return flights first.

Deals found on 19/8

Showing 1-10 of 29 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 19 August 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 21h 26m. 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 cheapest airlines to fly from Northern Ireland to Washington, D.C. one-way?

    For one-way options, check prices for Aer Lingus. According to our data, you can fly for as low as £565. Users have also found prices from £1,087 and £1,267 on British Airways and Delta, respectively.

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

    Most travelers choose Belfast Intl - Washington, D.C. Reagan-National, Belfast City - Washington, D.C. Reagan-National or Belfast Intl - Washington, D.C. Dulles Intl 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
Laurel
Tysons

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

Top airline flying from Northern Ireland to Washington, D.C.

Discover the top airline that operate flights from Northern Ireland to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 19 August 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£606Average£743FlexibilityNo cancel feeOn-time70%
Search British Airways 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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