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Cheap flights from Washington, D.C. Dulles Intl Airport to Northern Ireland from £206

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 27/4. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BFS
16 Apr — 23 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dulles Intl to Northern Ireland

Enter your travel dates to find the best prices.

Cheapest flights from Dulles Intl to Northern Ireland
Explore the most affordable flight options available from Dulles Intl to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 March 2026.

Sun 26/420:30
IAD
-
BFS
2 stops20h 00m
Multiple Airlines
Tue 12/507:35
BFS
-
IAD
3 stops36h 35m
Multiple Airlines
Deal found 14/3£516
Tue 28/420:30
IAD
-
BFS
3 stops21h 50m
Multiple Airlines
Tue 5/507:35
BFS
-
IAD
3 stops36h 35m
Multiple Airlines
Deal found 13/3£536
Mon 27/420:30
IAD
-
BFS
3 stops21h 50m
Multiple Airlines
Mon 4/521:25
BFS
-
IAD
3 stops28h 10m
Multiple Airlines
Deal found 13/3£563
Wed 22/420:30
IAD
-
BFS
3 stops19h 30m
Multiple Airlines
Tue 28/420:15
BFS
-
IAD
3 stops47h 55m
Multiple Airlines
Deal found 14/3£566
Wed 29/413:20
IAD
-
BFS
2 stops21h 15m
Multiple Airlines
Wed 6/505:55
BFS
-
IAD
2 stops34h 40m
Multiple Airlines
Deal found 15/3£586
Wed 25/1117:35
IAD
-
BHD
1 stop22h 25m
KLM
Mon 30/1117:20
BHD
-
IAD
1 stop27h 25m
KLM
Deal found 13/3£641
Thu 2/417:40
IAD
-
BHD
1 stop18h 15m
Delta
Tue 7/409:50
BHD
-
IAD
1 stop10h 45m
Delta
Deal found 13/3£652
Sun 6/919:15
IAD
-
BHD
1 stop10h 15m
British Airways
Thu 10/920:35
BHD
-
IAD
1 stop24h 15m
British Airways
Deal found 15/3£659
Mon 10/822:25
IAD
-
BHD
1 stop12h 05m
British Airways
Thu 13/806:30
BHD
-
IAD
1 stop15h 55m
British Airways
Deal found 16/3£670
Mon 13/417:45
IAD
-
BHD
1 stop14h 10m
British Airways
Mon 27/416:50
BHD
-
IAD
1 stop28h 05m
British Airways
Deal found 16/3£683
Wed 22/422:15
IAD
-
BHD
1 stop12h 25m
British Airways
Tue 28/409:40
BHD
-
IAD
1 stop15h 30m
British Airways
Deal found 14/3£684
Sun 26/417:40
IAD
-
BHD
1 stop10h 40m
Virgin Atlantic
Tue 12/509:50
BHD
-
IAD
1 stop10h 45m
Virgin Atlantic
Deal found 14/3£699

Find flight deals from Dulles Intl to Northern Ireland

Keep the following information in mind while searching for Dulles Intl to Northern Ireland flight deals. Data was last updated 17 March 2026.

Round-trip from

£516

One-way from

£206
26/4-12/5
  • 26/4-12/5
  • 5 total stops
  • 56h 35m total
  • Washington, D.C. to Northern Ireland
Search Deals
27/4
  • 27/4
  • 3 total stops
  • 34h 05m total
  • Washington, D.C. to Northern Ireland
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Dulles Intl 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 17 March 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 27/4

20:30-23:20

3 stops21h 50m

Belfast Intl

Mon 4/5

21:25-20:35

3 stops28h 10m

£563

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 26/4

20:30-22:30

3 stops21h 00m

Belfast Intl

Tue 12/5

07:35-15:10

3 stops36h 35m

£565

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 22/4

20:30-22:20

2 stops20h 50m

Belfast Intl

Tue 28/4

20:15-15:10

3 stops47h 55m

£647

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 6/9

19:15-10:30

1 stop10h 15m

Belfast City

Thu 10/9

20:35-17:25

1 stop25h 50m

£659

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 29/4

20:30-21:00

3 stops19h 30m

Belfast Intl

Wed 6/5

16:20-20:35

3 stops33h 15m

£706

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 26/4

12:45-09:20

2 stops15h 35m

Belfast City

Tue 12/5

09:50-15:35

1 stop10h 45m

£715

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 8/5

22:25-18:10

1 stop14h 45m

Belfast City

Sun 17/5

11:00-20:20

1 stop14h 20m

£761

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 8/5

13:32-16:55

2 stops22h 23m

Belfast City

Sun 17/5

09:50-22:56

2 stops18h 06m

£806

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 16/6

17:40-09:20

1 stop10h 40m

Belfast City

Thu 18/6

17:30-15:35

1 stop27h 05m

£840
Fastest return journey

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 19/5

17:40-11:55

2 stops13h 15m

Belfast City

Thu 28/5

14:20-20:20

1 stop11h 00m

£841

Flights are sorted by cheapest return flights first.

Deals found on 13/3

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Dulles Intl to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Dulles Intl 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. Dulles Intl Airport 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 Dulles Intl 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. Dulles Intl Airport to Northern Ireland?

    British Airways, KLM, and Delta can get you from Washington, D.C. Dulles Intl Airport to Northern Ireland in just under 11h 50m. Your travel time can differ by up to 10h 33m. Airlines will cover a distance of 3390 mi. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Dulles Intl to Northern Ireland that include hotel bookings?

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

  • How can I find direct flights from Dulles Intl to Northern Ireland?

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

  • Can I find deals for business class flights from Dulles Intl to Northern Ireland?

    Yes. Cheapflights offers flight deals from Dulles Intl 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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Why should you use Cheapflights to find cheap flight tickets from Dulles Intl to Northern Ireland?

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Yes! Cheapflights helps users easily find flights from Dulles Intl to Northern Ireland with no change fees.

Can Cheapflights notify me if prices for flights from Dulles Intl to Northern Ireland become cheaper?

Not ready to book yet? You can track prices for flights from Dulles Intl to Northern Ireland on Cheapflights with our Price Alert feature and get notified when better prices are available.

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