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Cheap flights from Washington, D.C. Dulles Intl Airport to Northern Ireland from £387

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 29/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BFS
3 Apr — 10 Apr1
1 adult

Cheap 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 29 March 2025.

Round-trip from

£511

One-way from

£387

Popular in

June

Cheapest in

January

Average price

£755
British Airways
  • British Airways
  • 22/9-6/10
  • 2 total stops
  • 25h 15m total
  • Washington, D.C. to Northern Ireland
Search Deals
29/8
  • 29/8
  • 2 total stops
  • 27h 35m total
  • Washington, D.C. to Northern Ireland
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£107 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Dulles Intl to Northern Ireland

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 29 March 2025.

Fri 10/1022:45IAD - BHD
1 stop14h 30mIberia
Tue 14/1009:35BHD - IAD
1 stop15h 40mIberia
Deal found 28/3£510
Mon 22/922:40IAD - BHD
1 stop13h 50mBritish Airways
Mon 6/1013:50BHD - IAD
1 stop11h 25mBritish Airways
Deal found 27/3£511
Mon 12/520:30IAD - BFS
2 stops21h 10mMultiple Airlines
Mon 19/512:35BFS - IAD
3 stops37h 15mMultiple Airlines
Deal found 28/3£574
Sun 13/420:21IAD - BHD
2 stops19h 54mDelta
Sun 27/406:30BHD - IAD
2 stops21h 37mDelta
Deal found 28/3£591
Wed 30/717:39IAD - BHD
2 stops13h 16mAmerican Airlines
Sat 16/807:05BHD - IAD
1 stop15h 30mAmerican Airlines
Deal found 27/3£638
Mon 22/917:20IAD - BHD
2 stops14h 30mAer Lingus
Mon 6/1006:50BHD - IAD
2 stops17h 05mAer Lingus
Deal found 27/3£704
Sun 13/417:25IAD - BHD
1 stop18h 30mKLM
Sat 19/417:25BHD - IAD
1 stop27h 10mKLM
Deal found 28/3£918

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 29 March 2025.
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

Dulles Intl

Fly to

Northern Ireland

Route

Depart

Return

Price

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 22/9

22:40-17:30

1 stop13h 50m

Belfast City

Mon 6/10

13:50-20:15

1 stop11h 25m

£511

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 12/5

20:30-22:40

2 stops21h 10m

Belfast Intl

Mon 19/5

12:35-20:50

3 stops37h 15m

£574

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 13/4

20:21-21:15

2 stops19h 54m

Belfast City

Sun 27/4

06:30-23:07

2 stops21h 37m

£591

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 30/7

17:39-11:55

2 stops13h 16m

Belfast City

Sat 16/8

07:05-17:35

1 stop15h 30m

£638

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 22/9

17:20-12:50

2 stops14h 30m

Belfast City

Mon 6/10

06:50-18:55

2 stops17h 05m

£704

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 13/4

17:25-16:55

1 stop18h 30m

Belfast City

Sat 19/4

17:25-15:35

1 stop27h 10m

£918

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 29/8

11:35-20:10

2 stops27h 35m

£387

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sat 30/8

19:25-12:15

1 stop11h 50m

£488

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 30/8

19:25-22:25

1 stop22h 00m

£614

Flights are sorted by cheapest return flights first.

Deals found on 26/3

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

Rainfall in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Northern Ireland ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

Temperature in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Northern Ireland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Northern Ireland. Reviews last updated 29 March 2025.
Delta
8.0
Very Good
7,896 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,896 reviews
Delta
8.0
Very Good
7,896 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very Good
7,896 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
7,896 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Aer Lingus
7.0
Good
1,062 reviews
Delta
8.0
Very Good
7,896 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
British Airways
6.6
Okay
6,713 reviews
Delta
8.0
Very Good
7,896 reviews
Check prices

Boarding

8.2

Crew

8.5

Comfort

8.0

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Northern Ireland?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Northern Ireland (average of £67). Flying from Washington, D.C. Dulles Intl Airport 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 Dulles Intl to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Reagan-National to Stansted flights
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Dulles Intl to Liverpool flights
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Dulles Intl to Newcastle upon Tyne flights
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Baltimore to Cardiff flights
Dulles Intl to Bristol flights

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