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Cheap flights from Northern Ireland to Washington, D.C. from £334

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 5/11. 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
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 25 July 2026.

Tue 8/910:30
BFS
-
IAD
3 stops39h 05m
Multiple Airlines
Tue 15/909:45
IAD
-
BFS
3 stops25h 35m
Multiple Airlines
Deal found 24/7£645
Sat 5/921:05
BFS
-
IAD
3 stops26h 55m
Multiple Airlines
Sat 12/920:30
IAD
-
BFS
2 stops21h 10m
Multiple Airlines
Deal found 22/7£669
Thu 13/809:35
BHD
-
BWI
2 stops18h 23m
Iberia
Wed 19/811:59
BWI
-
BHD
2 stops20h 36m
Iberia
Deal found 21/7£674
Fri 4/920:10
BHD
-
IAD
2 stops24h 20m
British Airways
Tue 8/917:45
IAD
-
BHD
1 stop10h 15m
British Airways
Deal found 21/7£676
Thu 5/1111:05
BHD
-
BWI
1 stop12h 40m
British Airways
Mon 9/1114:26
BWI
-
BHD
2 stops21h 59m
British Airways
Deal found 24/7£683
Thu 13/812:45
BHD
-
DCA
2 stops15h 48m
British Airways
Wed 19/818:23
DCA
-
BHD
2 stops14h 12m
British Airways
Deal found 21/7£685
Thu 13/806:40
BFS
-
DCA
3 stops20h 08m
Multiple Airlines
Wed 19/812:40
DCA
-
BFS
3 stops25h 35m
Multiple Airlines
Deal found 21/7£708
Thu 13/806:30
BHD
-
IAD
2 stops21h 25m
British Airways
Wed 19/821:30
IAD
-
BHD
1 stop11h 05m
British Airways
Deal found 23/7£714
Thu 13/806:30
BHD
-
BWI
2 stops19h 19m
British Airways
Wed 19/816:25
BWI
-
BHD
2 stops21h 20m
British Airways
Deal found 20/7£759
Fri 4/916:10
BFS
-
BWI
3 stops32h 15m
Multiple Airlines
Fri 11/920:30
BWI
-
BFS
3 stops21h 50m
Multiple Airlines
Deal found 21/7£795
Thu 13/806:40
BFS
-
IAD
2 stops18h 44m
Multiple Airlines
Wed 19/816:20
IAD
-
BFS
2 stops21h 55m
Multiple Airlines
Deal found 21/7£817
Fri 14/809:50
BHD
-
DCA
2 stops15h 43m
KLM
Wed 19/812:55
DCA
-
BHD
2 stops15h 25m
KLM
Deal found 20/7£826

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 25 July 2026.

Round-trip from

£645

One-way from

£334
8/9-15/9
  • 8/9-15/9
  • 6 total stops
  • 64h 40m total
  • Northern Ireland to Washington, D.C.
Search Deals
5/11
  • 5/11
  • 3 total stops
  • 38h 50m 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 25 July 2026.
Use the filters below to find and compare flights from Northern Ireland to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 8/9

10:30-20:35

3 stops39h 05m

Washington, D.C. Dulles Intl

Tue 15/9

09:45-16:20

3 stops25h 35m

£645

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sat 5/9

21:05-19:00

3 stops26h 55m

Washington, D.C. Dulles Intl

Sat 12/9

20:30-22:40

2 stops21h 10m

£669

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 13/8

09:35-22:58

2 stops18h 23m

Baltimore/Washington

Wed 19/8

11:59-13:35

2 stops20h 36m

£674

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Fri 4/9

20:10-15:30

2 stops24h 20m

Washington, D.C. Dulles Intl

Tue 8/9

17:45-09:00

1 stop10h 15m

£676

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Wed 2/12

15:40-18:45

1 stop32h 05m

Baltimore/Washington

Sun 6/12

17:47-13:55

2 stops15h 08m

£683

BelfastBaltimore

BHD - BWI

BHDBWI

Belfast City

Thu 5/11

11:05-18:45

1 stop12h 40m

Baltimore/Washington

Mon 9/11

14:26-17:25

2 stops21h 59m

£685

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Wed 13/1

11:25-23:59

2 stops17h 34m

Washington, D.C. Reagan-National

Sun 17/1

17:45-13:55

2 stops15h 10m

£694
Fastest return journey

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 14/1

06:35-18:54

2 stops17h 19m

Washington, D.C. Reagan-National

Mon 18/1

15:30-09:05

2 stops12h 35m

£694

BelfastWashington, D.C.

BFS - DCA

BFSDCA

Belfast Intl

Thu 13/8

06:40-21:48

3 stops20h 08m

Washington, D.C. Reagan-National

Wed 19/8

12:40-19:15

3 stops25h 35m

£708

BelfastWashington, D.C.

BHD - DCA

BHDDCA

Belfast City

Thu 13/8

09:35-21:13

2 stops16h 38m

Washington, D.C. Reagan-National

Wed 19/8

18:23-15:40

2 stops16h 17m

£711

Flights are sorted by cheapest return flights first.

Deals found on 22/7

Showing 1-10 of 23 resultsSorted by cheapest first
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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.

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 18h 23m. Fly via Iberia or British Airways 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 Intl - Washington, D.C. Dulles Intl, Belfast Intl - Washington, D.C. Reagan-National or Belfast Intl - 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
Gaithersburg
Oxon Hill
Hanover
Woodbridge
Alexandria

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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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