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Cheap flights from Washington, D.C. to Northern Ireland from £212

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 15/10. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BFS
29 Oct — 5 Nov1
1 adult
1 adult, Economy

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

Keep the following information in mind while searching for Washington, D.C. to Northern Ireland flight deals. Data was last updated 29 September 2025.

Round-trip from

£449

One-way from

£212

Popular in

June

Cheapest in

February

Average price

£483
12/11-19/11
  • 12/11-19/11
  • 4 total stops
  • 31h 05m total
  • Washington, D.C. to Northern Ireland
Search Deals
15/10
  • 15/10
  • 3 total stops
  • 38h 40m total
  • Washington, D.C. to Northern Ireland
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£108 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£23 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Washington, D.C. to Northern Ireland

Cheapest flights from Washington, D.C. to Northern Ireland
Explore the most affordable flight options available from Washington, D.C. to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 September 2025.

Wed 12/1119:40IAD - BFS
2 stops15h 30mMultiple Airlines
Wed 19/1107:55BFS - IAD
2 stops15h 35mMultiple Airlines
Deal found 29/9£449
Tue 11/1119:40IAD - BFS
2 stops15h 20mMultiple Airlines
Tue 18/1106:25BFS - IAD
2 stops17h 05mMultiple Airlines
Deal found 27/9£478
Mon 27/1015:47BWI - BHD
2 stops18h 28mAmerican Airlines
Mon 3/1106:35BHD - BWI
2 stops20h 30mAmerican Airlines
Deal found 29/9£483
Wed 12/1118:05IAD - BHD
1 stop17h 45mDelta
Sun 16/1106:30BHD - IAD
1 stop14h 35mDelta
Deal found 28/9£489
Mon 10/1117:30IAD - BFS
2 stops21h 40mMultiple Airlines
Mon 17/1107:50BFS - IAD
3 stops35h 45mMultiple Airlines
Deal found 28/9£497
Wed 12/1117:30DCA - BHD
2 stops18h 20mDelta
Sun 16/1106:30BHD - DCA
2 stops18h 23mDelta
Deal found 28/9£500
Mon 27/1022:45IAD - BHD
1 stop11h 30mBritish Airways
Mon 3/1109:15BHD - IAD
1 stop15h 40mBritish Airways
Deal found 29/9£532
Mon 27/1019:45BWI - BHD
2 stops16h 20mBritish Airways
Mon 3/1119:25BHD - BWI
1 stop28h 20mBritish Airways
Deal found 29/9£552
Sun 19/1019:34IAD - BHD
2 stops16h 21mKLM
Sun 26/1006:30BHD - IAD
1 stop14h 35mKLM
Deal found 28/9£572
Sat 25/1017:50IAD - BHD
1 stop10h 25mBritish Airways
Fri 31/1019:35BHD - IAD
1 stop29h 20mBritish Airways
Deal found 29/9£573
Wed 12/1119:40BWI - BFS
2 stops15h 30mMultiple Airlines
Wed 19/1107:55BFS - BWI
2 stops15h 45mMultiple Airlines
Deal found 29/9£580
Sat 25/1020:40IAD - BFS
2 stops19h 35mMultiple Airlines
Fri 31/1006:30BFS - IAD
2 stops17h 00mMultiple Airlines
Deal found 29/9£591

Cheapflights Fare Finder

 
Customise your flight search to find flights from Washington, D.C. to Northern Ireland 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 29 September 2025.
Use the filters below to find and compare flights from Washington, D.C. to Northern Ireland that are best for you.

Fly from

Washington, D.C.

Fly to

Northern Ireland

Route

Depart

Return

Price

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 12/11

19:40-16:10

2 stops15h 30m

Belfast Intl

Wed 19/11

07:55-18:30

2 stops15h 35m

£449

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 16/3

22:45-14:15

1 stop11h 30m

Belfast City

Sun 22/3

06:30-16:35

1 stop14h 05m

£474

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 11/11

19:40-16:00

2 stops15h 20m

Belfast Intl

Tue 18/11

06:25-18:30

2 stops17h 05m

£478

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Mon 27/10

15:47-14:15

2 stops18h 28m

Belfast City

Mon 3/11

06:35-22:05

2 stops20h 30m

£483

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 12/11

18:05-16:50

1 stop17h 45m

Belfast City

Sun 16/11

06:30-16:05

1 stop14h 35m

£489

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 19/10

17:25-21:15

1 stop22h 50m

Belfast City

Sun 26/10

17:20-17:05

1 stop27h 45m

£489

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Mon 16/3

18:59-14:15

2 stops15h 16m

Belfast City

Sun 22/3

09:10-18:48

2 stops13h 38m

£493

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 10/11

17:30-20:10

2 stops21h 40m

Belfast Intl

Mon 17/11

07:50-14:35

3 stops35h 45m

£497

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 16/3

19:50-16:50

2 stops17h 00m

Belfast City

Sun 22/3

06:30-17:05

1 stop14h 35m

£500

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Wed 12/11

14:59-16:50

2 stops20h 51m

Belfast City

Sun 16/11

06:30-17:00

2 stops15h 30m

£500

Flights are sorted by cheapest return flights first.

Deals found on 28/9

Showing 1-10 of 34 results
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Best time to book a flight from Washington, D.C. to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Washington, D.C. 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 Washington, D.C. to Northern Ireland
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 Washington, D.C. to Northern Ireland. 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 Washington, D.C. to Northern Ireland?

    Departing from Washington, D.C. to Northern Ireland will take you 11h 30m. The distance between Washington, D.C. and Northern Ireland is about 3390 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    While some choose either Washington, D.C. Reagan-National - Belfast Intl or Washington, D.C. Reagan-National - Belfast City, Washington, D.C. Dulles Intl - Belfast Intl is the most popular route from Washington, D.C. to Northern Ireland.

  • Can I find deals for flights from Washington, D.C. to Northern Ireland that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Northern Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Northern Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Northern Ireland.

  • Can I find deals for business class flights from Washington, D.C. to Northern Ireland?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Northern Ireland 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 Washington, D.C. to Northern Ireland?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to Northern Ireland (average of £67). Flying from Washington, D.C. to Northern Ireland in July is currently the most expensive (average of £90). 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

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Alternative routes for Washington, D.C. to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Heathrow flights
Dulles Intl to Gatwick flights
Reagan-National to Heathrow flights
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Reagan-National to Gatwick flights
Dulles Intl to Luton flights
Dulles Intl to Edinburgh flights
Reagan-National to Edinburgh flights
Reagan-National to Stansted flights
Dulles Intl to Glasgow Intl flights
Dulles Intl to Manchester flights
Reagan-National to Manchester flights
Reagan-National to Luton flights
Dulles Intl to Southampton flights
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Dulles Intl to Bristol flights
Dulles Intl to Leeds flights
Dulles Intl to Liverpool flights
Dulles Intl to Cardiff flights
Dulles Intl to Newcastle upon Tyne flights
Reagan-National to Bristol flights
Dulles Intl to Aberdeen flights
Dulles Intl to Inverness flights
Dulles Intl to Exeter flights
Dulles Intl to East Midlands flights
Dulles Intl to Bournemouth flights

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How does Cheapflights help users find flights from Washington, D.C. to Northern Ireland?

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Can Cheapflights find flights from Washington, D.C. to Northern Ireland with no change fees?

Yes, we can. To see specific flights from Washington, D.C. to Northern Ireland with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Washington, D.C. to Northern Ireland become cheaper?

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