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Cheap flights from Washington, D.C. to Northern Ireland from £479

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/3. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — BFS
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

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 14 November 2025.

Round-trip from

£479

Popular in

June

Cheapest in

February

Average price

£536
British Airways
  • British Airways
  • 5/3-12/3
  • 2 total stops
  • 27h 55m total
  • Washington, D.C. to Northern Ireland
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£113 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£26 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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

Enter your travel dates to find the best prices.

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 14 November 2025.

Wed 26/1118:05IAD - BHD
1 stop17h 45mMultiple Airlines
Wed 3/1217:20BHD - IAD
1 stop27h 45mMultiple Airlines
Deal found 13/11£495
Wed 26/1112:11IAD - BHD
2 stops23h 39mDelta
Wed 3/1206:30BHD - IAD
1 stop14h 35mDelta
Deal found 13/11£499
Wed 26/1114:35BWI - BHD
2 stops21h 15mDelta
Wed 3/1206:30BHD - BWI
2 stops15h 21mDelta
Deal found 13/11£507
Wed 26/1117:03DCA - BHD
2 stops18h 47mDelta
Wed 3/1206:30BHD - DCA
2 stops15h 35mDelta
Deal found 13/11£507
Mon 1/1217:30IAD - BFS
2 stops21h 45mMultiple Airlines
Sun 14/1208:15BFS - IAD
3 stops36h 00mMultiple Airlines
Deal found 13/11£524
Sun 14/1221:45IAD - BHD
1 stop28h 55mBritish Airways
Wed 7/111:25BHD - IAD
1 stop33h 10mBritish Airways
Deal found 12/11£565
Wed 19/1116:40DCA - BHD
2 stops19h 10mDelta
Sun 23/1106:30BHD - DCA
2 stops15h 30mDelta
Deal found 12/11£590
Wed 26/1117:05IAD - BHD
2 stops15h 50mAer Lingus
Wed 3/1206:40BHD - IAD
2 stops17h 50mAer Lingus
Deal found 12/11£628
Mon 15/1221:45IAD - BHD
1 stop13h 20mBritish Airways
Wed 7/111:25BHD - IAD
1 stop33h 10mBritish Airways
Deal found 12/11£668
Mon 15/1212:19IAD - BHD
2 stops27h 41mDelta
Wed 7/117:20BHD - IAD
1 stop27h 45mDelta
Deal found 12/11£694
Sun 14/1218:05IAD - BHD
1 stop21h 55mDelta
Wed 7/117:20BHD - IAD
2 stops30h 49mDelta
Deal found 12/11£698
Sun 14/1218:05IAD - BHD
1 stop21h 55mDelta
Fri 9/117:20BHD - IAD
2 stops30h 49mDelta
Deal found 12/11£705

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 14 November 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 - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 16/3

22:45-14:15

1 stop11h 30m

Belfast City

Sun 22/3

09:10-16:40

1 stop11h 30m

£479

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 5/3

21:45-16:40

1 stop13h 55m

Belfast City

Thu 12/3

06:35-16:35

1 stop14h 00m

£479

BaltimoreBelfast

BWI - BHD

BWIBHD

Baltimore/Washington

Sun 10/5

21:30-13:05

1 stop10h 35m

Belfast City

Sun 17/5

13:00-19:40

1 stop11h 40m

£491

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 5/3

18:20-10:20

1 stop11h 00m

Belfast City

Thu 12/3

10:40-23:54

2 stops17h 14m

£493

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 26/11

18:05-16:50

1 stop17h 45m

Belfast City

Wed 3/12

17:20-16:05

1 stop27h 45m

£495

Washington, D.C.Belfast

DCA - BHD

DCABHD

Washington, D.C. Reagan-National

Mon 16/3

17:23-10:40

2 stops13h 17m

Belfast City

Sun 22/3

12:10-22:46

2 stops14h 36m

£496

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 26/11

12:11-16:50

2 stops23h 39m

Belfast City

Wed 3/12

06:30-16:05

1 stop14h 35m

£499

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 1/4

17:40-11:55

1 stop13h 15m

Belfast City

Sun 5/4

20:05-17:25

1 stop26h 20m

£499

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 1/3

12:23-16:50

2 stops23h 27m

Belfast City

Fri 13/3

06:30-17:05

1 stop14h 35m

£507

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 16/3

19:59-16:50

2 stops16h 51m

Belfast City

Sun 22/3

06:30-17:05

1 stop14h 35m

£507

Flights are sorted by cheapest return flights first.

Deals found on 13/11

Showing 1-10 of 30 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

How much does it cost for a return flight from Washington, D.C. to Northern Ireland?

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. 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. Dulles Intl - Belfast City or Baltimore/Washington - Belfast Intl, 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.

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.
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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.

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