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Dulles Intl

$361+ Cheap flights from 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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — IAD
mar. 15 — mar. 221
dom. 3/15
dom. 3/22
1 adult, Economy
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Cheap flight deals from Ireland to Dulles Intl

Cheapest flights from Ireland to Dulles Intl
Explore the most affordable flight options available from Ireland to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on febrero 13, 2026.

This Finnair deal was found by Cheapflights users on 2/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/138:35 am
DUB
-
IAD
1 stop12h 15m
Multiple Airlines
lun. 5/2510:25 pm
IAD
-
DUB
1 stop15h 15m
Multiple Airlines
Deal found 2/10$408
This Finnair deal was found by Cheapflights users on 2/13. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/301:45 pm
DUB
-
IAD
1 stop11h 35m
Multiple Airlines
sáb. 5/165:40 pm
IAD
-
DUB
1 stop13h 20m
Multiple Airlines
Deal found 2/13$431
This Finnair deal was found by Cheapflights users on 2/13. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/31:45 pm
DUB
-
IAD
1 stop11h 35m
Multiple Airlines
mar. 9/85:40 pm
IAD
-
DUB
1 stop15h 55m
Multiple Airlines
Deal found 2/13$432
This Finnair deal was found by Cheapflights users on 2/12. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/248:35 am
DUB
-
IAD
1 stop12h 15m
Multiple Airlines
jue. 10/85:40 pm
IAD
-
DUB
1 stop19h 15m
Multiple Airlines
Deal found 2/12$433
This Finnair deal was found by Cheapflights users on 2/13. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/238:40 pm
DUB
-
IAD
1 stop23h 55m
Multiple Airlines
jue. 4/910:25 pm
IAD
-
DUB
1 stop14h 30m
Multiple Airlines
Deal found 2/13$450
This Finnair deal was found by Cheapflights users on 2/13. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/288:10 pm
DUB
-
IAD
1 stop24h 40m
Multiple Airlines
dom. 8/305:40 pm
IAD
-
DUB
1 stop20h 55m
Multiple Airlines
Deal found 2/13$456
This Flightnetwork deal was found by Cheapflights users on 2/11. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/2711:30 am
DUB
-
IAD
1 stop12h 00m
Icelandair
mar. 3/37:40 pm
IAD
-
DUB
1 stop9h 35m
Icelandair
Deal found 2/11$462
This Mytrip deal was found by Cheapflights users on 2/13. 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.
sáb. 2/2111:30 am
DUB
-
IAD
1 stop12h 00m
Icelandair
lun. 3/27:40 pm
IAD
-
DUB
1 stop9h 35m
Icelandair
Deal found 2/13$464
This Mytrip deal was found by Cheapflights users on 2/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/411:30 am
DUB
-
IAD
1 stop12h 00m
Icelandair
lun. 3/98:40 pm
IAD
-
DUB
1 stop9h 35m
Icelandair
Deal found 2/12$467
This deal was found by Cheapflights users on 2/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/1610:30 am
DUB
-
IAD
1 stop11h 55m
British Airways
jue. 5/217:15 pm
IAD
-
DUB
1 stop14h 15m
British Airways
Deal found 2/10$470
This Finnair deal was found by Cheapflights users on 2/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/208:25 pm
DUB
-
IAD
1 stop24h 25m
Multiple Airlines
mar. 11/39:45 pm
IAD
-
DUB
1 stop14h 15m
Multiple Airlines
Deal found 2/10$471
This Delta deal was found by Cheapflights users on 2/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/236:00 am
ORK
-
IAD
1 stop15h 05m
Delta
lun. 3/23:42 pm
IAD
-
ORK
2 stops18h 18m
Delta
Deal found 2/11$575

Find flight deals from Ireland to Dulles Intl

Keep the following information in mind while searching for Ireland to Dulles Intl flight deals. Data was last updated febrero 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$408
(Finnair)

One-way from

$361
(Kiwi.com)

Popular in

August

Cheapest in

September

Average price

$578

Good round-trip deal

$662 or less

Good one-way deal

$499 or less
Provider with most accurate pricing for Dublin-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dublin-Washington, D.C. (WAS) flights.
Search Deals
From Ireland to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Ireland to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Ireland to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Ireland to Washington, D.C. Dulles Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from 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 febrero 13, 2026.
Use the filters below to find and compare flights from Ireland to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Ireland

Fly to

Dulles Intl

Route

Depart

Return

Price

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

mié. 5/13

8:35 am-3:50 pm

1 stop12h 15m

Washington, D.C. Dulles Intl

lun. 5/25

10:25 pm-6:40 pm

1 stop15h 15m

$408

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

jue. 4/30

1:45 pm-8:20 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

sáb. 5/16

5:40 pm-12:00 pm

1 stop13h 20m

$431

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

lun. 3/23

8:40 pm-4:35 pm

1 stop23h 55m

Washington, D.C. Dulles Intl

jue. 4/9

10:25 pm-5:55 pm

1 stop14h 30m

$450

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

mar. 3/10

11:30 am-7:30 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

mar. 3/17

8:40 pm-10:15 am

1 stop9h 35m

$479

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

sáb. 3/28

7:10 pm-5:55 pm

2 stops26h 45m

Washington, D.C. Dulles Intl

lun. 4/6

8:20 pm-6:20 pm

1 stop17h 00m

$499

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

vie. 2/27

5:55 am-4:05 pm

1 stop15h 10m

Washington, D.C. Dulles Intl

dom. 3/8

1:19 pm-8:45 am

1 stop15h 26m

$524

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

mié. 3/4

8:50 am-4:05 pm

1 stop12h 15m

Washington, D.C. Dulles Intl

mié. 3/11

1:19 pm-12:40 pm

2 stops19h 21m

$526

CorkWashington, D.C.

ORK - IAD

ORKIAD

Cork

lun. 2/23

6:00 am-4:05 pm

1 stop15h 05m

Washington, D.C. Dulles Intl

lun. 3/2

6:50 pm-3:00 pm

1 stop15h 10m

$575

ShannonWashington, D.C.

SNN - IAD

SNNIAD

Shannon

lun. 3/30

7:30 am-8:20 pm

1 stop17h 50m

Washington, D.C. Dulles Intl

lun. 4/6

10:25 pm-8:35 pm

1 stop17h 10m

$578

CorkWashington, D.C.

ORK - IAD

ORKIAD

Cork

dom. 3/29

10:50 am-3:35 pm

1 stop33h 45m

Washington, D.C. Dulles Intl

dom. 4/5

5:40 pm-10:20 am

1 stop11h 40m

$579

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/10

Showing 1-10 of 37 results
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Best time to book a flight from Ireland to Dulles Intl

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

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

Currently, December is the cheapest month in which you can book a flight from Ireland to Washington, D.C. Dulles Intl Airport (average of $366). Flying from Ireland to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $599). 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 IE to IAD?

Find hourly flight availability from Ireland to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated febrero 13, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ireland to Washington, D.C. Dulles Intl Airport as you normally would.

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

Explore weekly flight availability from Ireland to Dulles Intl. 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 febrero 13, 2026.

The most flights from IE0 to IAD are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

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

About 14% of weekly flights between Ireland and Washington, D.C. have experienced delays in the past year, with the average delay time being 150 minutes.

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

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

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

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

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

Over the last year, Aer Lingus have had the lowest number of delays on this route, with just 13% of flights being delayed.

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 febrero 13, 2026.
Peruse reviews from past customers who have flown with United Airlines and Aer Lingus from Ireland to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,283 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,283 reviews
United Airlines
7.4
Good
9,283 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Aer Lingus
7.2
Good
1,450 reviews
United Airlines
7.4
Good
9,283 reviews

Boarding

7.7

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.1

Comfort

7.3

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from 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.

  • How long is the flight from Ireland to Washington, D.C. Dulles Intl Airport?

    Airlines like KLM, American Airlines, and Air Canada fly from Ireland to Washington, D.C. Dulles Intl Airport in about 15h 05m. The time it takes to get you to your destination can typically vary by up to 2h 59m. Airlines will cover a distance of 3326 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 Ireland to Washington, D.C. Dulles Intl Airport one-way?

    The cheapest airlines for a one-way flight from Ireland to Washington, D.C. Dulles Intl Airport are Icelandair ($335), Aer Lingus ($424), and American Airlines ($494).

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

    The most popular route from Ireland to Washington, D.C. Dulles Intl Airport is Dublin - Washington, D.C. Dulles Intl. You may also consider Shannon - Washington, D.C. Dulles Intl or Cork - Washington, D.C. Dulles Intl.

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

    Before booking your flight to Washington, D.C. Dulles Intl Airport from Ireland, check out the most reliable airlines to get you to your destination on time: Air Canada (94%), United Airlines (94%), Lufthansa( 94%).

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

    While on average a flight from Ireland to Washington, D.C. Dulles Intl Airport is generally $1,005, our data shows the cheapest flight currently is $460. When looking at the most popular route, (Dublin - Washington, D.C. Dulles Intl), you can expect to pay $409 for that flight.

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Ireland to Washington, D.C. Dulles Intl Airport (average of $366). Flying from Ireland to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $599). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Laurel
Linthicum Heights
Rockville
Upper Marlboro
Manassas
Bowie
Largo
McLean
Clinton
Towson

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Alternative routes for Ireland to Dulles Intl

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

Top 2 airlines flying from Ireland to Dulles Intl

Discover the top 2 airlines that operate flights from Ireland to Dulles Intl. 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 febrero 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$455Average$622FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$645Average$941FlexibilityNo cancel feeOn-time69%

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