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$224+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — DUB
Jan 2 — Jan 91
Fri 1/2
Fri 1/9
1 adult, Economy
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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 December 3, 2025.

This KLM deal was found by Cheapflights users on 12/2. 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 12/96:05 pmIAD - ORK
1 stop17h 40mKLM
Tue 12/166:00 amORK - IAD
1 stop15h 05mKLM
Deal found 12/2$499
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:31 pmIAD - DUB
1 stop33h 39mUnited Airlines
Fri 1/99:00 amDUB - IAD
2 stops31h 49mUnited Airlines
Deal found 12/1$513
This Kissandfly.com 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/78:20 amIAD - DUB
1 stop18h 50mLufthansa
Tue 12/1612:05 pmDUB - IAD
Nonstop8h 15mLufthansa
Deal found 11/30$531
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/89:00 pmIAD - DUB
Nonstop6h 50mAer Lingus
Mon 12/154:20 pmDUB - IAD
Nonstop8h 10mAer Lingus
Deal found 12/1$533
This FlightHub deal was found by Cheapflights users on 12/2. 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.
Thu 12/1110:20 pmIAD - DUB
Nonstop7h 00mMultiple Airlines
Mon 12/226:35 pmDUB - IAD
1 stop27h 05mMultiple Airlines
Deal found 12/2$537
This FlightHub deal was found by Cheapflights users on 12/2. 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.
Thu 12/115:05 pmIAD - DUB
Nonstop6h 50mAer Lingus
Wed 12/174:20 pmDUB - IAD
Nonstop8h 10mAer Lingus
Deal found 12/2$538
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:20 amIAD - DUB
1 stop18h 50mUnited Airlines
Wed 12/1712:05 pmDUB - IAD
Nonstop8h 15mUnited Airlines
Deal found 12/1$542
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/138:20 amIAD - DUB
2 stops17h 50mMultiple Airlines
Mon 12/226:35 pmDUB - IAD
1 stop27h 05mMultiple Airlines
Deal found 12/1$547
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/83:38 pmIAD - DUB
1 stop11h 07mDelta
Mon 12/158:50 amDUB - IAD
2 stops15h 29mDelta
Deal found 12/1$550
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Wed 12/101:10 pmIAD - DUB
1 stop14h 00mUnited Airlines
Sun 12/149:30 amDUB - IAD
1 stop12h 00mUnited Airlines
Deal found 12/2$552
This Ovago deal was found by Cheapflights users on 12/2. 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.
Tue 12/95:05 pmIAD - ORK
2 stops25h 20mAer Lingus
Tue 12/167:40 amORK - IAD
2 stops16h 50mAer Lingus
Deal found 12/2$650
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:45 pmIAD - SNN
1 stop14h 00mMultiple Airlines
Wed 1/75:30 pmSNN - IAD
1 stop27h 05mMultiple Airlines
Deal found 12/1$782

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 December 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$488
(American Airlines)

One-way from

$224
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$833

Good round-trip deal

$684 or less

Good one-way deal

$432 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Dublin flight deals.
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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. 11% potential increase in price ($85 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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.
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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 December 3, 2025.
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

Dulles Intl

Fly to

Ireland

Route

Depart

Return

Price

Washington, D.C.Shannon

IAD - SNN

IADSNN

Washington, D.C. Dulles Intl

Wed 2/4

9:45 pm-4:45 pm

1 stop14h 00m

Shannon

Wed 3/4

7:50 am-7:55 pm

1 stop17h 05m

$488

Washington, D.C.Cork

IAD - ORK

IADORK

Washington, D.C. Dulles Intl

Tue 4/21

10:20 pm-7:50 pm

1 stop16h 30m

Cork

Tue 4/28

11:45 am-3:50 pm

1 stop33h 05m

$489

Washington, D.C.Shannon

IAD - SNN

IADSNN

Washington, D.C. Dulles Intl

Tue 4/14

5:40 pm-4:10 pm

1 stop17h 30m

Shannon

Tue 4/21

9:15 pm-4:08 pm

2 stops23h 53m

$499

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Thu 1/22

12:23 pm-6:20 pm

2 stops24h 57m

Dublin

Wed 1/28

11:30 am-5:15 pm

2 stops34h 45m

$528

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 3/17

1:19 pm-11:45 am

2 stops18h 26m

Dublin

Sun 3/29

7:15 pm-4:50 pm

2 stops26h 35m

$528

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Thu 4/16

6:15 am-9:45 am

1 stop22h 30m

Dublin

Wed 4/22

9:50 am-7:50 am

2 stops27h 00m

$530

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 1/12

12:23 pm-11:45 am

2 stops18h 22m

Dublin

Sat 4/18

8:00 pm-4:50 pm

2 stops25h 50m

$533

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Fri 4/17

7:10 pm-7:20 am

Nonstop7h 10m

Dublin

Fri 4/24

9:50 am-9:25 pm

2 stops16h 35m

$537

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Fri 4/17

7:10 pm-7:20 am

Nonstop7h 10m

Dublin

Tue 4/28

9:50 am-9:25 pm

2 stops16h 35m

$537

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 4/1

7:10 pm-7:20 am

Nonstop7h 10m

Dublin

Sat 4/11

9:50 am-8:30 pm

1 stop15h 40m

$537

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 48 results
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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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ireland (average of $371). Flying from Washington, D.C. Dulles Intl Airport to Ireland in June is currently the most expensive (average of $536). 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 December 3, 2025.

It’s optimal to fly from Washington, D.C. Dulles Intl Airport to Ireland in the evening. By choosing this option you can save up to 20% on the cost of your flight, compared to a flight at noon.

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 December 3, 2025.

The most flights from IAD to IE0 are scheduled on a Monday (13 on average). You will have fewer flight options on Saturday, 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 20% of weekly flights between Washington, D.C. and Ireland have experienced delays in the past year, with the average delay time being 166 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 16% of flights being delayed.

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 December 3, 2025.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Ireland, such as United Airlines, American Airlines, and Aer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,063 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,063 reviews
United Airlines
7.4
Good
9,063 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
American Airlines
7.2
Good
11,044 reviews
United Airlines
7.4
Good
9,063 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Aer Lingus
7.2
Good
1,384 reviews
United Airlines
7.4
Good
9,063 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Icelandair
7.0
Good
584 reviews
United Airlines
7.4
Good
9,063 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
British Airways
6.7
Okay
7,550 reviews
United Airlines
7.4
Good
9,063 reviews

Overall

7.4

Comfort

7.3

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 American Airlines, Scandinavian Airlines, and United Airlines fly from Washington, D.C. Dulles Intl Airport to Ireland in about 14h. The time it takes to get you to your destination can typically vary by up to 10h 57m. The distance from Washington, D.C. Dulles Intl Airport to Ireland is about 3296 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 ($248), Aer Lingus ($382), and United Airlines ($411).

  • 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: Aer Lingus (92%), Qatar Airways (90%), British Airways (88%).

  • 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 $1,074, our data indicates the cheapest price to be $375. The most popular route (Washington, D.C. Dulles Intl - Dublin), is priced around $362.

  • 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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ireland (average of $371). Flying from Washington, D.C. Dulles Intl Airport to Ireland in June is currently the most expensive (average of $536). 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 Ireland

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Heathrow flights
Dulles Intl to Charles de Gaulle flights
Baltimore to Heathrow flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
Dulles Intl to Lisbon flights
Dulles Intl to Madrid flights
Reagan-National to Heathrow flights
Dulles Intl to Gatwick flights
Dulles Intl to Dublin flights
Dulles Intl to Frankfurt flights
Dulles Intl to Istanbul flights
Dulles Intl to London City flights
Dulles Intl to Orly flights
Baltimore to Charles de Gaulle flights
Reagan-National to Charles de Gaulle flights
Dulles Intl to Amsterdam flights
Dulles Intl to Barcelona-El Prat flights
Dulles Intl to Stansted flights
Baltimore to Gatwick flights
Dulles Intl to Athens flights
Reagan-National to Gatwick flights
Reagan-National to Madrid flights
Reagan-National to Orly flights
Reagan-National to Leonardo da Vinci/Fiumicino flights
Baltimore to Leonardo da Vinci/Fiumicino flights
Baltimore to Madrid flights
Dulles Intl to Luton flights
Dulles Intl to Keflavik Intl flights
Dulles Intl to Zurich flights
Reagan-National to Istanbul flights
Baltimore to Lisbon flights
Reagan-National to Lisbon flights
Dulles Intl to Vienna flights
Dulles Intl to Edinburgh flights
Reagan-National to Dublin flights
Baltimore to Dublin flights
Baltimore to Istanbul flights
Dulles Intl to Munich flights
Baltimore to Keflavik Intl flights
Dulles Intl to Bruxelles-National flights
Baltimore to Barcelona-El Prat flights
Reagan-National to Barcelona-El Prat flights
Dulles Intl to Sabiha Gokcen flights
Dulles Intl to Malpensa flights
Reagan-National to Keflavik Intl flights
Dulles Intl to Geneva flights
Baltimore to Athens flights
Reagan-National to Athens flights
Dulles Intl to Beauvais-Tille flights
Dulles Intl to Linate 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 December 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$137Average$795FlexibilityNo cancel feeOn-timeN/A
PLAYCheapest$322Average$512FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$371Average$601FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$427Average$587FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$435Average$875FlexibilityNo cancel feeOn-time71%
Scandinavian AirlinesCheapest$456Average$497FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$470Average$687FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$484Average$788FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$525Average$761FlexibilityNo cancel feeOn-time69%
KLMCheapest$643Average$645FlexibilityNo cancel feeOn-time75%

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