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Dulles Intl

$809+ Cheap flights from Northern Ireland to Dulles Intl (IAD)

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 6/30. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — IAD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Northern Ireland to Dulles Intl

Keep the following information in mind while searching for Northern Ireland to Dulles Intl flight deals. Data was last updated June 12, 2025.

Round-trip from

$845
(Mytrip)

One-way from

$809
(Justfly.com)
From Northern Ireland to Washington, D.C. Dulles Intl
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One-way flight from Northern Ireland to Washington, D.C. Dulles Intl
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Find flight deals from Northern Ireland to Dulles Intl

Cheapest flights from Northern Ireland to Dulles Intl
Explore the most affordable flight options available from Northern Ireland to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Mytrip deal was found by Cheapflights users on 6/11. 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.
Thu 7/36:00 amBFS - IAD
2 stops32h 37mMultiple Airlines
Wed 7/92:25 pmIAD - BFS
2 stops23h 10mMultiple Airlines
Deal found 6/11$845
This Delta deal was found by Cheapflights users on 6/12. 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 11/35:20 pmBHD - IAD
1 stop27h 25mDelta
Wed 12/245:35 pmIAD - BHD
1 stop22h 25mDelta
Deal found 6/12$2,548
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/48:40 amBHD - IAD
2 stops15h 50mAmerican Airlines
Tue 12/309:55 pmIAD - BHD
1 stop13h 50mAmerican Airlines
Deal found 6/12$2,577
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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.
Mon 11/37:30 pmBHD - IAD
2 stops25h 05mBritish Airways
Sat 12/276:15 pmIAD - BHD
1 stop11h 55mBritish Airways
Deal found 6/12$2,619
This Air France deal was found by Cheapflights users on 6/12. 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.
Tue 11/46:30 amBHD - IAD
2 stops15h 05mMultiple Airlines
Sat 12/275:35 pmIAD - BHD
1 stop18h 15mMultiple Airlines
Deal found 6/12$2,625
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/46:55 amBHD - IAD
2 stops13h 40mAer Lingus
Fri 12/265:05 pmIAD - BHD
2 stops14h 45mAer Lingus
Deal found 6/12$2,630
This KLM deal was found by Cheapflights users on 6/12. 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.
Tue 11/46:30 amBHD - IAD
2 stops15h 05mKLM
Fri 12/265:35 pmIAD - BHD
1 stop18h 15mKLM
Deal found 6/12$3,196

Cheapflights Fare Finder

Customize your flight search to find flights from Northern Ireland to Dulles Intl 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 June 12, 2025.
Use the filters below to find and compare flights from Northern Ireland to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Northern Ireland

Fly to

Dulles Intl

Route

Depart

Return

Price

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 7/3

6:00 am-9:37 am

2 stops32h 37m

Washington, D.C. Dulles Intl

Wed 7/9

2:25 pm-6:35 pm

2 stops23h 10m

$845

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 11/3

5:20 pm-3:45 pm

1 stop27h 25m

Washington, D.C. Dulles Intl

Wed 12/24

5:35 pm-9:00 pm

1 stop22h 25m

$2,548

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 11/4

8:40 am-7:30 pm

2 stops15h 50m

Washington, D.C. Dulles Intl

Tue 12/30

9:55 pm-4:45 pm

1 stop13h 50m

$2,577

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 11/3

7:30 pm-3:35 pm

2 stops25h 05m

Washington, D.C. Dulles Intl

Sat 12/27

6:15 pm-11:10 am

1 stop11h 55m

$2,619

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 11/4

6:30 am-4:35 pm

2 stops15h 05m

Washington, D.C. Dulles Intl

Sat 12/27

5:35 pm-4:50 pm

1 stop18h 15m

$2,625

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 11/4

6:55 am-3:35 pm

2 stops13h 40m

Washington, D.C. Dulles Intl

Fri 12/26

5:05 pm-12:50 pm

2 stops14h 45m

$2,630

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 11/4

6:30 am-4:35 pm

2 stops15h 05m

Washington, D.C. Dulles Intl

Fri 12/26

5:35 pm-4:50 pm

1 stop18h 15m

$3,196

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 6/30

6:55 am-3:50 pm

2 stops13h 55m

$809

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sun 7/20

11:00 am-5:30 pm

1 stop11h 30m

$1,630

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 6/30

6:30 am-3:35 pm

1 stop14h 05m

$1,734

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 11 results
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Best time to book a flight from Northern Ireland to Dulles Intl

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

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated June 12, 2025.
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Virgin Atlantic
7.4
Good
652 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Aer Lingus
7.1
Good
1,117 reviews
Delta
8.0
Very good
7,946 reviews

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Northern Ireland to Washington, D.C. Dulles Intl Airport one-way?

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at $809. British Airways flights start at $1,630 while deals on Virgin Atlantic start at $1,734 one-way.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Northern Ireland to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Northern Ireland to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $349). 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

Traveling to a place near Northern Ireland?

Book flights to Northern Ireland if you plan to visit one of these locations
Arlington
Alexandria
Woodbridge
Tysons
Silver Spring
Linthicum Heights
Fredericksburg
Gaithersburg
Fairfax
Falls Church
Easton
Herndon
Towson
Sterling
Bowie
Rockville
Reston
National Harbor
Springfield
Manassas

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Alternative routes for Northern Ireland to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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