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

Airlines like Icelandair, British Airways, and Scandinavian Airlines fly from Ireland to Washington, D.C. Dulles Intl Airport in about 12h. The time it takes to get you to your destination can typically vary by up to 22h 45m. Airlines will cover a distance of 3393 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What is the cheapest day to fly from Ireland to Washington, D.C. Dulles Intl Airport?

Travelers seeking maximum savings on their Ireland to Washington, D.C. Dulles Intl Airport flight should consider departing on Monday afternoons when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

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 Cork - Washington, D.C. Dulles Intl or Shannon - Washington, D.C. Dulles Intl.

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 $837, our data shows the cheapest flight currently is $493. When looking at the most popular route, (Dublin - Washington, D.C. Dulles Intl), you can expect to pay $404 for that flight.

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: Qatar Airways (100%), Air Canada (72%), United Airlines( 72%).

What are the most popular airlines that fly from Ireland to Washington, D.C. Dulles Intl Airport?

When booking a flight from Ireland to Washington, D.C. Dulles Intl Airport, you may want to consider flying on Aer Lingus, Icelandair or United Airlines as they are the most popular for this route.

What is the cheapest day to fly round-trip from Ireland to Washington, D.C. Dulles Intl Airport?

Leaving on a Saturday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 16% on the overall cost on flights from Ireland to Washington, D.C. Dulles Intl Airport.

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

Users have found that booking a flight from Ireland to Washington, D.C. Dulles Intl Airport at least 58 days early can save you up to 84% on average compared to booking a flight this week. If booking 58 days before your flight isn’t an option for you, users have found flights from Ireland to Washington, D.C. Dulles Intl Airport for as little as $536 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $625 for flights departing within the next 3 days.

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

The best pricing can be found in the month of January. Prices to Washington, D.C. Dulles Intl Airport from Ireland average $573. You can even find prices in January for less than $573, as users have found deals to Washington, D.C. Dulles Intl Airport from as low as $274. The month of August appears to be one of the more expensive times to travel to Washington, D.C. Dulles Intl Airport from Ireland. Flying in the targeted month can save you up to 37%.

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.

$341+ Cheap Flights from Ireland to Washington, D.C. Dulles Intl Airport

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Ireland to Dulles Intl 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 Ireland to Dulles Intl

Round-trip from	$373 (oojo)
One-way from	$341 (Kiwi.com)
Popular in	August
Cheapest in	January
Average price	$504
Good round-trip deal	$790 or less
Good one-way deal	$520 or less

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. 13% potential increase in price ($91 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

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

Find 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 September 11, 2025.

Tue 11/2511:30 amDUB - IAD

1 stop12h 00mIcelandair

Sun 11/307:40 pmIAD - DUB

1 stop9h 35mIcelandair

Deal found 9/11

$373

Fri 12/511:30 amDUB - IAD

1 stop12h 00mIcelandair

Mon 12/87:40 pmIAD - DUB

1 stop9h 35mIcelandair

Deal found 9/10

$397

Mon 11/311:30 amDUB - IAD

1 stop12h 00mIcelandair

Tue 11/187:40 pmIAD - DUB

1 stop9h 35mIcelandair

Deal found 9/10

$399

Wed 10/15:55 amDUB - IAD

1 stop14h 20mLufthansa

Tue 10/1410:15 pmIAD - DUB

Nonstop7h 05mLufthansa

Deal found 9/11

$400

Wed 10/15:55 amDUB - IAD

1 stop14h 20mMultiple Airlines

Tue 10/148:45 pmIAD - DUB

1 stop16h 05mMultiple Airlines

Deal found 9/11

$402

Wed 10/15:55 amDUB - IAD

1 stop14h 20mLufthansa

Wed 10/1510:15 pmIAD - DUB

Nonstop7h 05mLufthansa

Deal found 9/11

$405

Wed 10/15:55 amDUB - IAD

1 stop14h 20mMultiple Airlines

Sat 10/118:45 pmIAD - DUB

1 stop16h 05mMultiple Airlines

Deal found 9/10

$407

Wed 10/15:55 amDUB - IAD

1 stop14h 20mLufthansa

Fri 10/1010:20 pmIAD - DUB

1 stop13h 35mLufthansa

Deal found 9/10

$409

Sun 10/2610:45 amDUB - IAD

1 stop14h 10mBritish Airways

Sun 11/26:20 pmIAD - DUB

1 stop12h 55mBritish Airways

Deal found 9/11

$411

Sun 10/265:15 pmORK - IAD

1 stop27h 50mMultiple Airlines

Sun 11/26:50 pmIAD - ORK

1 stop15h 10mMultiple Airlines

Deal found 9/11

$451

Fri 9/196:00 amORK - IAD

1 stop14h 35mDelta

Fri 9/265:25 pmIAD - ORK

1 stop18h 10mDelta

Deal found 9/10

$458

Thu 9/189:30 amSNN - IAD

1 stop13h 00mUnited Airlines

Tue 9/231:15 pmIAD - SNN

1 stop13h 15mUnited Airlines

Deal found 9/10

$459

Best flights from Ireland to Dulles Intl
Discover carefully curated flight deals from Ireland to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2025.

Fri 12/511:30 amDUB - IAD

1 stop12h 00mIcelandair

Mon 12/87:40 pmIAD - DUB

1 stop9h 35mIcelandair

Deal found 9/10

$397

Wed 10/15:55 amDUB - IAD

1 stop14h 20mMultiple Airlines

Tue 10/148:45 pmIAD - DUB

1 stop16h 05mMultiple Airlines

Deal found 9/11

$402

Fri 10/3110:45 amDUB - IAD

1 stop33h 50mBritish Airways

Sat 11/89:45 pmIAD - DUB

1 stop10h 00mBritish Airways

Deal found 9/10

$418

Wed 2/1111:30 amDUB - IAD

2 stops34h 45mScandinavian Airlines

Wed 2/188:30 pmIAD - DUB

2 stops32h 30mScandinavian Airlines

Deal found 9/10

$425

Thu 11/205:00 amDUB - IAD

1 stop14h 35mLufthansa

Tue 11/2510:20 pmIAD - DUB

Nonstop7h 00mLufthansa

Deal found 9/11

$430

Mon 10/2710:45 amDUB - IAD

2 stops17h 08mAmerican Airlines

Sun 11/29:45 pmIAD - DUB

1 stop31h 05mAmerican Airlines

Deal found 9/11

$434

Thu 3/51:25 pmORK - IAD

1 stop31h 40mDelta

Mon 3/912:30 pmIAD - ORK

2 stops24h 15mDelta

Deal found 9/10

$480

Sun 10/2611:15 amORK - IAD

1 stop33h 50mKLM

Sun 11/29:25 pmIAD - ORK

2 stops14h 20mKLM

Deal found 9/11

$641

Wed 10/15:55 amDUB - IAD

1 stop19h 05mMultiple Airlines

Wed 10/155:45 pmIAD - DUB

1 stop13h 25mMultiple Airlines

Deal found 9/11

$407

Sun 10/268:40 pmDUB - IAD

1 stop23h 55mBritish Airways

Mon 11/36:20 pmIAD - DUB

1 stop10h 30mBritish Airways

Deal found 9/10

$432

Mon 11/39:10 amDUB - IAD

1 stop16h 05mLufthansa

Tue 11/1810:20 pmIAD - DUB

Nonstop7h 00mLufthansa

Deal found 9/10

$432

Tue 11/118:40 pmDUB - IAD

1 stop23h 55mBritish Airways

Sun 11/166:20 pmIAD - DUB

1 stop15h 45mBritish Airways

Deal found 9/11

$432

Last-minute flights from Ireland to Dulles Intl
Discover last-minute flight deals from Ireland to Dulles Intl. Data last updated September 11, 2025 and is based on user searches.

Fri 9/196:00 amORK - IAD

1 stop14h 35mDelta

Fri 9/265:25 pmIAD - ORK

1 stop18h 10mDelta

Deal found 9/10

$458

Wed 10/15:55 amDUB - IAD

1 stop14h 20mLufthansa

Tue 10/1410:15 pmIAD - DUB

Nonstop7h 05mLufthansa

Deal found 9/11

$400

Wed 10/15:55 amDUB - IAD

1 stop14h 20mMultiple Airlines

Tue 10/148:45 pmIAD - DUB

1 stop16h 05mMultiple Airlines

Deal found 9/11

$402

Wed 10/15:55 amDUB - IAD

1 stop14h 20mLufthansa

Wed 10/1510:15 pmIAD - DUB

Nonstop7h 05mLufthansa

Deal found 9/11

$405

Wed 10/15:55 amDUB - IAD

1 stop19h 05mMultiple Airlines

Wed 10/155:45 pmIAD - DUB

1 stop13h 25mMultiple Airlines

Deal found 9/11

$407

Wed 10/15:55 amDUB - IAD

1 stop14h 20mLufthansa

Fri 10/1010:20 pmIAD - DUB

1 stop13h 35mLufthansa

Deal found 9/10

$409

Thu 10/238:35 amDUB - IAD

1 stop16h 40mBritish Airways

Wed 10/297:20 pmIAD - DUB

1 stop17h 40mBritish Airways

Deal found 9/10

$422

Sun 10/2610:45 amDUB - IAD

1 stop14h 10mBritish Airways

Sun 11/26:20 pmIAD - DUB

1 stop12h 55mBritish Airways

Deal found 9/11

$411

Sun 10/263:55 pmDUB - IAD

1 stop28h 40mBritish Airways

Tue 11/49:45 pmIAD - DUB

1 stop30h 55mBritish Airways

Deal found 9/11

$416

Sun 10/265:15 pmORK - IAD

1 stop27h 50mMultiple Airlines

Sun 11/26:50 pmIAD - ORK

1 stop15h 10mMultiple Airlines

Deal found 9/11

$451

Mon 10/271:00 pmDUB - IAD

1 stop11h 55mBritish Airways

Sun 11/29:45 pmIAD - DUB

1 stop14h 05mBritish Airways

Deal found 9/11

$417

Tue 10/2812:30 pmDUB - IAD

1 stop33h 45mScandinavian Airlines

Thu 11/138:30 pmIAD - DUB

1 stop16h 50mScandinavian Airlines

Deal found 9/10

$420

One-way flights from Ireland to Dulles Intl
Search for one-way flight options from Ireland to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 11, 2025.

Mon 10/209:20 pmDUB - IAD

2 stops47h 00mMultiple Airlines

Deal found 9/10

$341

Sat 9/201:35 pmSNN - IAD

2 stops53h 50mMultiple Airlines

Deal found 9/10

$343

Wed 10/110:20 amDUB - IAD

2 stops32h 18mMultiple Airlines

Deal found 9/10

$343

Tue 11/41:20 pmDUB - IAD

2 stops36h 40mMultiple Airlines

Deal found 9/10

$344

Sun 11/94:25 amDUB - IAD

1 stop15h 50mTAP AIR PORTUGAL

Deal found 9/10

$349

Tue 10/216:50 pmDUB - IAD

1 stop25h 30mTAP AIR PORTUGAL

Deal found 9/10

$354

Wed 9/179:50 pmDUB - IAD

2 stops22h 30mMultiple Airlines

Deal found 9/10

$357

Fri 9/196:50 amDUB - IAD

2 stops40h 34mMultiple Airlines

Deal found 9/10

$358

Tue 11/257:05 amDUB - IAD

2 stops42h 55mMultiple Airlines

Deal found 9/11

$359

Sat 11/15:55 amDUB - IAD

2 stops44h 05mMultiple Airlines

Deal found 9/10

$371

Wed 10/81:30 pmDUB - IAD

3 stops30h 50mMultiple Airlines

Deal found 9/10

$374

Sun 11/25:15 amDUB - IAD

2 stops19h 45mMultiple Airlines

Deal found 9/10

$375

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 12/5

11:30 am-6:30 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Mon 12/8

7:40 pm-10:15 am

1 stop9h 35m

$397

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 10/1

5:55 am-3:15 pm

1 stop14h 20m

Washington, D.C. Dulles Intl

Tue 10/14

8:45 pm-5:50 pm

1 stop16h 05m

$402

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 10/1

5:55 am-8:00 pm

1 stop19h 05m

Washington, D.C. Dulles Intl

Wed 10/15

5:45 pm-12:10 pm

1 stop13h 25m

$407

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 10/31

10:45 am-4:35 pm

1 stop33h 50m

Washington, D.C. Dulles Intl

Sat 11/8

9:45 pm-12:45 pm

1 stop10h 00m

$418

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 2/11

11:30 am-5:15 pm

2 stops34h 45m

Washington, D.C. Dulles Intl

Wed 2/18

8:30 pm-10:00 am

2 stops32h 30m

$425

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 11/20

5:00 am-2:35 pm

1 stop14h 35m

Washington, D.C. Dulles Intl

Tue 11/25

10:20 pm-10:20 am

Nonstop7h 00m

$430

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sun 10/26

8:40 pm-4:35 pm

1 stop23h 55m

Washington, D.C. Dulles Intl

Mon 11/3

6:20 pm-9:50 am

1 stop10h 30m

$432

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 11/3

9:10 am-8:15 pm

1 stop16h 05m

Washington, D.C. Dulles Intl

Tue 11/18

10:20 pm-10:20 am

Nonstop7h 00m

$432

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 11/11

8:40 pm-3:35 pm

1 stop23h 55m

Washington, D.C. Dulles Intl

Sun 11/16

6:20 pm-3:05 pm

1 stop15h 45m

$432

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 10/27

10:45 am-11:53 pm

2 stops17h 08m

Washington, D.C. Dulles Intl

Sun 11/2

9:45 pm-9:50 am

1 stop31h 05m

$434

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 43 results

...

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, August is the cheapest month in which you can book a flight from Ireland to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Ireland to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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?

When flying from Ireland to Washington, D.C. Dulles Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 19% versus a flight in the morning.

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

The most flights from IE0 to IAD are scheduled on a Tuesday (14 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

Reviews of airlines servicing Dulles Intl

Peruse reviews from past customers who have flown with United Airlines, Aer Lingus, and Icelandair 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

8,937 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

United Airlines

7.4

Good

8,937 reviews

United Airlines

7.4

Good

8,937 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Aer Lingus

7.2

Good

1,271 reviews

United Airlines

7.4

Good

8,937 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Icelandair

7.0

Good

546 reviews

United Airlines

7.4

Good

8,937 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

How long is the flight from Ireland to Washington, D.C. Dulles Intl Airport?
Airlines like Icelandair, British Airways, and Scandinavian Airlines fly from Ireland to Washington, D.C. Dulles Intl Airport in about 12h. The time it takes to get you to your destination can typically vary by up to 22h 45m. Airlines will cover a distance of 3393 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
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 Cork - Washington, D.C. Dulles Intl or Shannon - 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: Qatar Airways (100%), Air Canada (72%), United Airlines( 72%).
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 $837, our data shows the cheapest flight currently is $493. When looking at the most popular route, (Dublin - Washington, D.C. Dulles Intl), you can expect to pay $404 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, August is the cheapest month in which you can book a flight from Ireland to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Ireland to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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

Woodbridge

Alexandria

Arlington

Tysons

Silver Spring

Springfield

Gaithersburg

Fredericksburg

Linthicum Heights

Fairfax

Falls Church

Owings Mills

Manassas

Rockville

Hanover

Oxon Hill

Laurel

Towson

Dundalk

National Harbor

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Ireland to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$425	Average$608	FlexibilityNo cancel fee	On-time76%
Aer Lingus	Cheapest$460	Average$649	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$612	Average$802	FlexibilityNo cancel fee	On-time69%

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.

$341+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ireland to Dulles Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap 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 September 11, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Ireland to Dulles Intl

Cheapest flights from Ireland to Dulles IntlExplore 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 September 11, 2025.

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 September 11, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ireland to Washington, D.C. Dulles Intl Airport that are best for you.

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.

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?

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 September 11, 2025.

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

Reviews of airlines servicing Dulles Intl

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?

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

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

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

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

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

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

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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 Ireland to Dulles Intl

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

Top 3 airlines flying from Ireland to Dulles Intl

100% Free

Book with Flexibility

Travel Smart

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 September 11, 2025.