HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ireland

$245+ Cheap flights from Dulles Intl (IAD) to 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — DUB
Aug 20 — Aug 271
Thu 8/20
Thu 8/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Ireland with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Dulles Intl to Ireland

Cheapest flights from Dulles Intl to Ireland
Explore the most affordable flight options available from Dulles Intl to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 21, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/35:25 pm
IAD
-
DUB
1 stop12h 00m
TAP AIR PORTUGAL
Sun 12/611:10 am
DUB
-
IAD
1 stop14h 25m
TAP AIR PORTUGAL
Deal found 7/19$640
This Icelandair deal was found by Cheapflights users on 7/17. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/168:30 pm
IAD
-
DUB
1 stop11h 45m
Icelandair
Wed 10/2112:15 pm
DUB
-
IAD
1 stop15h 00m
Icelandair
Deal found 7/17$641
This United Airlines deal was found by Cheapflights users on 7/20. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:35 pm
IAD
-
DUB
Nonstop7h 05m
United Airlines
Sat 9/199:20 am
DUB
-
IAD
1 stop16h 05m
United Airlines
Deal found 7/20$642
This Kiwi.com deal was found by Cheapflights users on 7/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/298:30 pm
IAD
-
DUB
1 stop9h 35m
Icelandair
Sat 10/102:15 pm
DUB
-
IAD
1 stop10h 05m
Icelandair
Deal found 7/17$643
This KAYAK deal was found by Cheapflights users on 7/18. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:30 pm
IAD
-
DUB
1 stop9h 35m
Icelandair
Thu 11/511:30 am
DUB
-
IAD
1 stop12h 00m
Icelandair
Deal found 7/18$644
This Icelandair deal was found by Cheapflights users on 7/18. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/198:30 pm
IAD
-
DUB
1 stop11h 45m
Icelandair
Thu 11/511:30 am
DUB
-
IAD
1 stop12h 00m
Icelandair
Deal found 7/18$645
This FlightHub deal was found by Cheapflights users on 7/20. 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 12/15:37 pm
IAD
-
DUB
2 stops32h 33m
Air Canada
Tue 12/159:00 am
DUB
-
IAD
1 stop11h 45m
Air Canada
Deal found 7/20$646
This Icelandair deal was found by Cheapflights users on 7/18. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2111:15 pm
IAD
-
DUB
1 stop30h 50m
Icelandair
Sun 11/111:30 am
DUB
-
IAD
1 stop12h 00m
Icelandair
Deal found 7/18$647
This KAYAK deal was found by Cheapflights users on 7/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:40 pm
IAD
-
DUB
1 stop9h 35m
Icelandair
Thu 11/2611:30 am
DUB
-
IAD
1 stop12h 00m
Icelandair
Deal found 7/17$648
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/75:25 pm
IAD
-
DUB
1 stop12h 00m
TAP AIR PORTUGAL
Fri 11/134:25 am
DUB
-
IAD
1 stop15h 50m
TAP AIR PORTUGAL
Deal found 7/21$649
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:40 pm
IAD
-
DUB
1 stop9h 35m
Icelandair
Sat 11/1411:30 am
DUB
-
IAD
1 stop12h 00m
Icelandair
Deal found 7/21$650
This KAYAK deal was found by Cheapflights users on 7/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/308:40 pm
IAD
-
DUB
1 stop9h 35m
Icelandair
Sat 11/711:30 am
DUB
-
IAD
1 stop12h 00m
Icelandair
Deal found 7/17$651

Find flight deals from Dulles Intl to Ireland

Keep the following information in mind while searching for Dulles Intl to Ireland flight deals. Data was last updated July 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$641
(Icelandair)

One-way from

$245
(Kissandfly.com)

Popular in

June

Cheapest in

January

Average price

$881

Good round-trip deal

$787 or less

Good one-way deal

$450 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Dublin flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Dublin flights.
Search Deals
From Washington, D.C. Dulles Intl to Ireland
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Ireland
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($184 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Ireland.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Ireland.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to 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 July 21, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 10/6

7:05 pm-7:20 am

Nonstop7h 15m

Dublin

Fri 10/16

8:50 am-11:50 am

Nonstop8h 00m

$725

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Thu 10/15

10:35 pm-10:40 am

Nonstop7h 05m

Dublin

Wed 10/21

1:00 pm-4:45 pm

1 stop32h 45m

$773

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 9/22

7:05 pm-7:20 am

Nonstop7h 15m

Dublin

Sat 10/3

9:20 am-3:25 pm

1 stop11h 05m

$782

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Fri 10/2

10:40 pm-8:15 am

2 stops52h 35m

Dublin

Sun 10/11

9:20 am-9:14 pm

2 stops16h 54m

$800

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 8/19

6:16 am-7:30 am

1 stop20h 14m

Dublin

Wed 8/26

9:20 am-11:21 am

1 stop31h 01m

$801

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 8/10

10:35 pm-10:40 am

Nonstop7h 05m

Dublin

Fri 8/21

9:20 am-9:14 pm

2 stops16h 54m

$809

Washington, D.C.Cork

IAD - ORK

IADORK

Washington, D.C. Dulles Intl

Mon 8/3

7:19 pm-2:40 pm

2 stops14h 21m

Cork

Tue 8/18

10:50 am-3:35 pm

1 stop33h 45m

$811

Washington, D.C.Cork

IAD - ORK

IADORK

Washington, D.C. Dulles Intl

Wed 8/19

6:15 pm-2:40 pm

1 stop15h 25m

Cork

Wed 8/26

6:15 am-3:35 pm

1 stop14h 20m

$812

Washington, D.C.Cork

IAD - ORK

IADORK

Washington, D.C. Dulles Intl

Wed 8/19

9:45 pm-2:40 pm

1 stop11h 55m

Cork

Wed 8/26

6:15 am-3:35 pm

1 stop14h 20m

$812
Quickest round-trip

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 8/10

10:35 pm-10:40 am

Nonstop7h 05m

Dublin

Thu 8/20

8:50 am-11:50 am

Nonstop8h 00m

$813

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Dulles Intl to Ireland

Have a flexible travel schedule? Discover the best time to fly to 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 Ireland

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ireland (average of $606). Flying from Washington, D.C. Dulles Intl Airport to Ireland in June is currently the most expensive (average of $1,090). 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.

What is the cheapest time of day to fly from IAD to IE?

Find hourly flight availability from Dulles Intl to Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 21, 2026.

When flying from Washington, D.C. Dulles Intl Airport to Ireland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Ireland

Explore weekly flight availability from Dulles Intl to Ireland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 21, 2026.

The most flights from IAD to IE0 are scheduled on a Monday (15 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (11 on average).

How often are flights from Washington, D.C. to Ireland delayed?

About 16% of weekly flights between Washington, D.C. and Ireland have experienced delays in the past year, with the average delay time being 188 minutes.

What is the most punctual flight time for Washington, D.C. to Ireland flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Washington, D.C. to Ireland flights?

Over the last year, Aer Lingus have had the lowest number of delays on this route, with just 12% of flights being delayed.

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Ireland?

To ensure you get the cheapest price possible for a flight from Washington, D.C. Dulles Intl Airport to Ireland, you should look to book at least 3 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing Ireland

Get insights into the airlines that provide service to 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 Ireland. Reviews last updated July 21, 2026.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Ireland, such as United Airlines,Aer Lingus, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,018 reviews

Entertainment

7.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
United Airlines
7.4
Good
10,018 reviews
United Airlines
7.4
Good
10,018 reviews

Entertainment

7.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Aer Lingus
7.3
Good
1,676 reviews
United Airlines
7.4
Good
10,018 reviews

Entertainment

7.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
American Airlines
7.1
Good
11,838 reviews
United Airlines
7.4
Good
10,018 reviews

Entertainment

7.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Icelandair
7.0
Good
715 reviews
United Airlines
7.4
Good
10,018 reviews

Entertainment

7.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Lufthansa
6.8
Okay
8,152 reviews
United Airlines
7.4
Good
10,018 reviews

Entertainment

7.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to 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 Ireland?

    Airlines like United Airlines, Delta, and KLM fly from Washington, D.C. Dulles Intl Airport to Ireland in about 7h 15m. The time it takes to get you to your destination can typically vary by up to 8h 10m. The distance from Washington, D.C. Dulles Intl Airport to Ireland is about 3393 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Ireland are Icelandair ($165), Aer Lingus ($379), and United Airlines ($404).

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

    The most popular flight routes from Washington, D.C. Dulles Intl Airport to Ireland are Washington, D.C. Dulles Intl - Dublin, Washington, D.C. Dulles Intl - Shannon and Washington, D.C. Dulles Intl - Cork.

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Ireland?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Dulles Intl Airport to Ireland on time: Qatar Airways (85%), American Airlines (82%), Aer Lingus (82%).

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Ireland?

    Looking for the cheapest flight from Washington, D.C. Dulles Intl Airport to Ireland? While on average our users pay $2,209, our data indicates the cheapest price to be $354. The most popular route (Washington, D.C. Dulles Intl - Dublin), is priced around $518.

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to 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 Ireland?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ireland (average of $606). Flying from Washington, D.C. Dulles Intl Airport to Ireland in June is currently the most expensive (average of $1,090). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to Ireland

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Heathrow flights
Baltimore to Heathrow flights
Dulles Intl to Charles de Gaulle flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Madrid flights
Reagan-National to Heathrow flights
Dulles Intl to Gatwick flights
Dulles Intl to Athens flights
Dulles Intl to Dublin flights
Dulles Intl to Stansted flights
Dulles Intl to Frankfurt flights
Baltimore to Charles de Gaulle flights
Dulles Intl to Barcelona-El Prat flights
Reagan-National to Charles de Gaulle flights
Baltimore to Gatwick flights
Dulles Intl to Istanbul flights
Dulles Intl to Orly flights
Dulles Intl to Amsterdam flights
Baltimore to Keflavik Intl flights
Dulles Intl to Keflavik Intl flights
Dulles Intl to Lisbon flights
Dulles Intl to Munich flights
Baltimore to Leonardo da Vinci/Fiumicino flights
Baltimore to Madrid flights
Dulles Intl to Edinburgh flights
Reagan-National to Madrid flights
Dulles Intl to Vicenza flights
Reagan-National to Leonardo da Vinci/Fiumicino flights
Reagan-National to Lisbon flights
Baltimore to Athens flights
Baltimore to Lisbon flights
Dulles Intl to Bruxelles-National flights
Dulles Intl to Luton flights
Baltimore to Frankfurt flights
Dulles Intl to Zurich flights
Reagan-National to Keflavik Intl flights
Baltimore to Dublin flights
Baltimore to Istanbul flights
Baltimore to Barcelona-El Prat flights
Dulles Intl to Vienna flights
Reagan-National to Barcelona-El Prat flights
Dulles Intl to Copenhagen flights

Top 10 airlines flying from Dulles Intl to Ireland

Discover the top 10 airlines that operate flights from Dulles Intl to 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 July 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$157Average$1,603FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$364Average$612FlexibilityNo cancel feeOn-time76%
IberiaCheapest$391Average$843FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$427Average$639FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$429Average$865FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$445Average$676FlexibilityNo cancel feeOn-time71%
Scandinavian AirlinesCheapest$456Average$518FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$472Average$744FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$561Average$971FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$577Average$606FlexibilityNo cancel feeOn-time77%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.