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$350+ Cheap flights from Dulles Intl (IAD) to Northern Ireland

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 1/14. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BFS
Jan 1 — Jan 81
Thu 1/1
Thu 1/8
1 adult, Economy
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Cheap 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 December 2, 2025.

This KLM deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:05 pmIAD - BHD
1 stop21h 55mKLM
Thu 12/116:30 amBHD - IAD
1 stop14h 35mKLM
Deal found 11/30$654
This Delta deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/15:59 pmIAD - BHD
2 stops22h 01mDelta
Mon 12/86:30 amBHD - IAD
1 stop14h 35mDelta
Deal found 11/30$658
This Air France deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:05 pmIAD - BHD
1 stop17h 45mMultiple Airlines
Fri 12/126:30 amBHD - IAD
2 stops14h 53mMultiple Airlines
Deal found 11/30$831
This Cheapflightsfares deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:20 pmIAD - BHD
1 stop9h 50mBritish Airways
Thu 12/1110:40 amBHD - IAD
1 stop14h 15mBritish Airways
Deal found 11/30$920
This Ovago deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/55:05 pmIAD - BHD
2 stops14h 45mAer Lingus
Wed 12/1010:20 amBHD - IAD
2 stops14h 10mAer Lingus
Deal found 11/30$921
This British Airways deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:20 pmIAD - BHD
1 stop9h 50mBritish Airways
Wed 12/106:35 amBHD - IAD
1 stop14h 00mBritish Airways
Deal found 11/30$967
This Air France deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/76:05 pmIAD - BHD
1 stop17h 45mMultiple Airlines
Thu 12/116:30 amBHD - IAD
1 stop14h 35mMultiple Airlines
Deal found 11/30$987
This KLM deal was found by Cheapflights users on 11/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/77:35 pmIAD - BHD
2 stops16h 15mKLM
Thu 12/116:30 amBHD - IAD
1 stop14h 35mKLM
Deal found 11/30$991
This Mytrip deal was found by Cheapflights users on 12/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/209:00 pmIAD - BFS
2 stops16h 50mMultiple Airlines
Sun 1/411:05 pmBFS - IAD
2 stops21h 30mMultiple Airlines
Deal found 12/1$2,336

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 December 2, 2025.

Round-trip from

$549
(oojo)

One-way from

$350
(Cheapflightsfares)

Popular in

June

Cheapest in

February

Average price

$691
From Washington, D.C. Dulles Intl to Northern Ireland
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Northern Ireland
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($196 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($44 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated December 2, 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

Sun 3/1

6:20 pm-1:55 pm

1 stop14h 35m

Belfast City

Mon 3/9

2:40 pm-4:35 pm

1 stop29h 55m

$572

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 3/2

9:45 pm-2:15 pm

1 stop11h 30m

Belfast City

Tue 3/10

11:25 am-8:55 pm

1 stop13h 30m

$572

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 3/3

9:45 pm-2:50 pm

1 stop12h 05m

Belfast City

Wed 3/11

9:15 am-4:35 pm

1 stop11h 20m

$572

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 3/3

6:20 pm-10:30 am

1 stop11h 10m

Belfast City

Tue 3/10

10:00 am-8:55 pm

1 stop14h 55m

$572

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 3/2

6:20 pm-10:40 am

1 stop11h 20m

Belfast City

Wed 3/11

9:15 am-4:35 pm

1 stop11h 20m

$572

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 3/4

9:45 pm-2:15 pm

1 stop11h 30m

Belfast City

Mon 3/9

7:25 pm-4:35 pm

1 stop25h 10m

$572

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 3/4

9:45 pm-2:15 pm

1 stop11h 30m

Belfast City

Wed 3/11

11:25 am-8:55 pm

1 stop13h 30m

$572

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 1/14

7:40 pm-4:10 pm

2 stops15h 30m

Belfast Intl

Wed 1/21

7:55 am-6:30 pm

2 stops15h 35m

$583

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 3/1

6:20 pm-10:20 am

1 stop11h 00m

Belfast City

Sun 3/8

6:30 am-3:35 pm

1 stop14h 05m

$584

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 3/16

7:20 pm-10:40 am

1 stop11h 20m

Belfast City

Sun 3/22

5:35 pm-4:35 pm

1 stop27h 00m

$584

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/29

Showing 1-10 of 18 results
1
2

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 round-trip 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.

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 December 2, 2025.
Read reviews from past customers who have flown British Airways from Washington, D.C. Dulles Intl Airport to Northern Ireland. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,550 reviews

Crew

7.6

Entertainment

6.4

Comfort

6.7

Overall

6.7

Boarding

6.9

Food

6.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.
British Airways
6.7
Okay
7,550 reviews
British Airways
6.7
Okay
7,550 reviews

Crew

7.6

Entertainment

6.4

Comfort

6.7

Overall

6.7

Boarding

6.9

Food

6.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

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?

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Northern Ireland in 14h 35m. Fly via British Airways to get the fastest option. Airlines will cover a distance of 3390 mi.

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

    Most travelers choose Washington, D.C. Dulles Intl - Belfast Intl, Washington, D.C. Dulles Intl - Belfast City or Washington, D.C. Dulles Intl - Campbeltown Machrihanish when deciding on the best route from Washington, D.C. Dulles Intl Airport to Northern Ireland.

  • 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 vacation 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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Alternative routes for Dulles Intl to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Heathrow flights
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Dulles Intl to Leeds flights
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Baltimore to Belfast City flights
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Reagan-National to Belfast City flights
Baltimore to Liverpool flights
Dulles Intl to Birmingham flights
Dulles Intl to Southend flights
Reagan-National to Inverness flights
Baltimore to Southampton flights
Baltimore to Birmingham flights
Baltimore to Leeds flights
Dulles Intl to Bristol flights
Reagan-National to Leeds flights
Reagan-National to Birmingham flights
Baltimore to Newcastle upon Tyne flights
Reagan-National to Newcastle upon Tyne flights
Baltimore to Cardiff flights

Top airline flying from Dulles Intl to Northern Ireland

Discover the top airline that operate flights from Dulles Intl to Northern Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$620Average$854FlexibilityNo cancel feeOn-time70%

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