Find flights
When to book
FAQs

Cheap flights from Northern Ireland to Washington, D.C. from £473

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 13/7. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — WAS
23 Mar — 30 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap 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 21 February 2026.

Sat 21/323:10
BFS
-
IAD
3 stops41h 35m
Multiple Airlines
Tue 24/320:40
IAD
-
BFS
3 stops19h 30m
Multiple Airlines
Deal found 18/2£703
Wed 18/312:25
BHD
-
DCA
2 stops25h 34m
British Airways
Sun 22/322:45
DCA
-
BHD
2 stops31h 55m
British Airways
Deal found 17/2£713
Mon 6/406:10
BFS
-
BWI
3 stops32h 04m
Multiple Airlines
Mon 13/420:30
BWI
-
BFS
3 stops21h 50m
Multiple Airlines
Deal found 20/2£735
Wed 18/309:15
BHD
-
IAD
1 stop11h 20m
British Airways
Sun 22/319:20
IAD
-
BHD
1 stop11h 00m
British Airways
Deal found 17/2£739
Sun 5/422:00
BFS
-
IAD
3 stops46h 10m
Multiple Airlines
Sun 12/420:30
IAD
-
BFS
3 stops21h 05m
Multiple Airlines
Deal found 19/2£759
Thu 5/309:05
BHD
-
IAD
1 stop15h 50m
British Airways
Mon 9/314:03
IAD
-
BHD
2 stops16h 37m
British Airways
Deal found 17/2£759
Thu 5/310:40
BHD
-
BWI
1 stop13h 05m
British Airways
Mon 9/312:16
BWI
-
BHD
2 stops26h 19m
British Airways
Deal found 17/2£769
Sat 21/323:10
BFS
-
IAD
3 stops41h 35m
Multiple Airlines
Wed 25/309:00
IAD
-
BFS
3 stops27h 10m
Multiple Airlines
Deal found 18/2£786
Sat 4/707:00
BFS
-
IAD
3 stops41h 00m
Multiple Airlines
Sun 5/722:20
IAD
-
BFS
2 stops18h 10m
Multiple Airlines
Deal found 18/2£834
Sat 21/306:30
BHD
-
IAD
1 stop14h 35m
Delta
Tue 24/313:19
IAD
-
BHD
2 stops23h 31m
Delta
Deal found 18/2£836
Mon 25/506:30
BHD
-
IAD
1 stop18h 50m
American Airlines
Thu 28/517:40
IAD
-
BHD
1 stop16h 50m
American Airlines
Deal found 17/2£851
Mon 25/509:40
BHD
-
BWI
1 stop15h 00m
British Airways
Thu 28/521:30
BWI
-
BHD
1 stop13h 00m
British Airways
Deal found 17/2£855

Find 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 21 February 2026.

Round-trip from

£703

One-way from

£473
21/3-24/3
  • 21/3-24/3
  • 6 total stops
  • 61h 05m total
  • Northern Ireland to Washington, D.C.
Search Deals
13/7
  • 13/7
  • 3 total stops
  • 37h 30m total
  • Northern Ireland to Washington, D.C.
Search Deals

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 21 February 2026.
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

Sat 21/3

23:10-12:45

3 stops41h 35m

Washington, D.C. Dulles Intl

Tue 24/3

20:40-20:10

3 stops19h 30m

£703

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Wed 18/3

12:25-09:59

2 stops25h 34m

Washington, D.C. Reagan-National

Sun 22/3

22:45-10:40

2 stops31h 55m

£713

BelfastBaltimore

BFS - BWI

BFSBWI

Belfast Intl

Mon 6/4

06:10-09:14

3 stops32h 04m

Baltimore/Washington

Mon 13/4

20:30-23:20

3 stops21h 50m

£735

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 18/3

09:15-16:35

1 stop11h 20m

Washington, D.C. Dulles Intl

Sun 22/3

19:20-10:20

1 stop11h 00m

£739

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sun 5/4

22:00-15:10

3 stops46h 10m

Washington, D.C. Dulles Intl

Sun 12/4

20:30-22:35

3 stops21h 05m

£759

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 5/3

09:05-19:55

1 stop15h 50m

Washington, D.C. Dulles Intl

Mon 9/3

14:03-10:40

2 stops16h 37m

£759

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 5/3

10:40-18:45

1 stop13h 05m

Baltimore/Washington

Mon 9/3

12:16-18:35

2 stops26h 19m

£769

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sat 21/3

23:10-12:45

3 stops41h 35m

Washington, D.C. Dulles Intl

Wed 25/3

09:00-16:10

3 stops27h 10m

£786

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sat 4/7

07:00-19:00

3 stops41h 00m

Washington, D.C. Dulles Intl

Sun 5/7

22:20-21:30

2 stops18h 10m

£834

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Mon 25/5

09:40-19:40

1 stop15h 00m

Baltimore/Washington

Thu 28/5

21:30-15:30

1 stop13h 00m

£855

Flights are sorted by cheapest return flights first.

Deals found on 19/2

Showing 1-10 of 50 results
1
2
3
...
5

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.
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 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 25h 34m. Fly via British Airways to get the fastest option. Airlines will cover a distance of 3378 mi.

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

    Most travelers choose Belfast Intl - Baltimore/Washington, Belfast Intl - 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

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

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.

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.