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 WestJet ($374), Icelandair ($387), and TAP AIR PORTUGAL ($451).

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. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 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 $1,048, our data shows the cheapest flight currently is $436. When looking at the most popular route, (Dublin - Washington, D.C. Dulles Intl), you can expect to pay $429 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: Lufthansa (89%), Air Canada (89%), United Airlines( 89%).

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 Sunday 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 24% 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 27 days early can save you up to 149% on average compared to booking a flight this week. If booking 27 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 $497 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 $697 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 $562. You can even find prices in January for less than $562, as users have found deals to Washington, D.C. Dulles Intl Airport from as low as $276. The month of July 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 35%.

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.

$555+ Flights from Ireland to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Ireland to Dulles Intl

Most accurate provider	Gurufare 3 stars
Most trusted provider	Gurufare 3 stars
Round-trip from	$445 (Iberia)
One-way from	$373 (Mytrip)
Popular in	July
Cheapest in	January
Average price	$552
Good round-trip deal	$657 or less
Good one-way deal	$456 or less

Provider with most accurate pricing for Dublin-Washington, D.C. (WAS) flight deals.

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Provider most trusted by Cheapflights users for Dublin-Washington, D.C. (WAS) flights.

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From Ireland to Washington, D.C. Dulles Intl

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One-way flight from Ireland to Washington, D.C. Dulles Intl

Search Deals

Highest demand for flights based on searches. 19% potential increase in price ($133 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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Price to beat on a round-trip flight from Ireland to Washington, D.C. Dulles Intl.

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Price to beat on a one-way flight from Ireland to Washington, D.C. Dulles Intl.

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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 April 29, 2025.

Thu 8/287:05 pmDUB - IAD

1 stop29h 54mScandinavian Airlines

Thu 9/410:05 pmIAD - DUB

1 stop30h 20mScandinavian Airlines

Deal found 4/29

$434

Sat 5/172:15 pmDUB - IAD

1 stop10h 05mIcelandair

Mon 5/2611:15 pmIAD - DUB

1 stop9h 00mIcelandair

Deal found 4/29

$437

Tue 10/2112:45 pmDUB - IAD

1 stop12h 30mBritish Airways

Tue 10/287:15 pmIAD - DUB

1 stop10h 25mBritish Airways

Deal found 4/29

$445

Mon 5/198:55 amDUB - IAD

1 stop11h 40mDelta

Mon 5/268:33 pmIAD - DUB

2 stops13h 27mDelta

Deal found 4/28

$448

Mon 5/512:50 pmDUB - IAD

Nonstop8h 00mAer Lingus

Tue 5/135:20 pmIAD - DUB

Nonstop6h 50mAer Lingus

Deal found 4/27

$512

Sat 9/69:20 amDUB - IAD

1 stop16h 45mUnited Airlines

Fri 9/2610:15 pmIAD - DUB

Nonstop7h 05mUnited Airlines

Deal found 4/28

$513

Thu 5/228:40 amDUB - IAD

1 stop12h 35mMultiple Airlines

Wed 5/2810:15 pmIAD - DUB

Nonstop7h 05mMultiple Airlines

Deal found 4/28

$527

Sun 9/710:40 amDUB - IAD

1 stop13h 45mLufthansa

Thu 9/2510:15 pmIAD - DUB

Nonstop7h 05mLufthansa

Deal found 4/28

$530

Sun 5/49:50 amDUB - IAD

2 stops16h 23mAir Canada

Sun 5/113:27 pmIAD - DUB

1 stop11h 48mAir Canada

Deal found 4/27

$538

Thu 5/812:30 pmSNN - IAD

1 stop23h 40mUnited Airlines

Mon 5/123:36 pmIAD - SNN

1 stop13h 39mUnited Airlines

Deal found 4/29

$541

Thu 5/226:40 pmDUB - IAD

2 stops24h 45mSWISS

Sat 5/318:45 pmIAD - DUB

1 stop16h 05mSWISS

Deal found 4/29

$558

Wed 10/2211:45 amORK - IAD

1 stop13h 30mBritish Airways

Fri 10/317:15 pmIAD - ORK

1 stop11h 55mBritish Airways

Deal found 4/29

$598

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 April 29, 2025.

Tue 10/2112:45 pmDUB - IAD

1 stop12h 30mBritish Airways

Tue 10/287:15 pmIAD - DUB

1 stop10h 25mBritish Airways

Deal found 4/29

$445

Mon 5/198:55 amDUB - IAD

1 stop11h 40mDelta

Mon 5/268:33 pmIAD - DUB

2 stops13h 27mDelta

Deal found 4/28

$448

Sat 5/172:15 pmDUB - IAD

1 stop10h 05mIcelandair

Sun 5/258:30 pmIAD - DUB

1 stop11h 45mIcelandair

Deal found 4/28

$450

Thu 5/225:55 amDUB - IAD

1 stop14h 40mKLM

Wed 5/285:25 pmIAD - DUB

1 stop14h 10mKLM

Deal found 4/29

$453

Fri 5/237:05 pmDUB - IAD

1 stop29h 54mScandinavian Airlines

Fri 5/3010:05 pmIAD - DUB

2 stops30h 10mScandinavian Airlines

Deal found 4/29

$472

Fri 5/234:00 pmDUB - IAD

Nonstop7h 55mAer Lingus

Fri 5/305:20 pmIAD - DUB

Nonstop6h 50mAer Lingus

Deal found 4/29

$512

Sat 9/69:20 amDUB - IAD

1 stop16h 45mUnited Airlines

Sun 9/2810:15 pmIAD - DUB

Nonstop7h 05mUnited Airlines

Deal found 4/28

$513

Fri 5/98:45 amDUB - IAD

1 stop12h 30mMultiple Airlines

Sun 5/1810:05 pmIAD - DUB

Nonstop7h 15mMultiple Airlines

Deal found 4/28

$526

Sun 9/710:40 amDUB - IAD

1 stop13h 45mLufthansa

Thu 9/2510:15 pmIAD - DUB

Nonstop7h 05mLufthansa

Deal found 4/28

$530

Thu 5/226:40 pmDUB - IAD

2 stops24h 45mSWISS

Sat 5/318:45 pmIAD - DUB

1 stop16h 05mSWISS

Deal found 4/29

$558

Fri 6/139:50 amDUB - IAD

1 stop11h 20mAir Canada

Fri 6/2010:15 amIAD - DUB

1 stop17h 00mAir Canada

Deal found 4/29

$654

Thu 6/511:45 amDUB - IAD

1 stop25h 53mAmerican Airlines

Thu 6/195:41 pmIAD - DUB

1 stop30h 49mAmerican Airlines

Deal found 4/28

$691

Last-minute flights from Ireland to Dulles Intl
Discover last-minute flight deals from Ireland to Dulles Intl. Data last updated April 29, 2025 and is based on user searches.

Sun 5/49:50 amDUB - IAD

2 stops16h 23mAir Canada

Sun 5/113:27 pmIAD - DUB

1 stop11h 48mAir Canada

Deal found 4/27

$538

Mon 5/55:55 amDUB - IAD

1 stop14h 40mDelta

Sun 5/1112:25 pmIAD - DUB

1 stop15h 50mDelta

Deal found 4/28

$451

Mon 5/512:50 pmDUB - IAD

Nonstop8h 00mAer Lingus

Tue 5/135:20 pmIAD - DUB

Nonstop6h 50mAer Lingus

Deal found 4/27

$512

Mon 5/59:50 amDUB - IAD

1 stop30h 49mUnited Airlines

Mon 5/127:00 pmIAD - DUB

Nonstop7h 10mUnited Airlines

Deal found 4/28

$519

Mon 5/510:40 amDUB - IAD

1 stop13h 45mLufthansa

Sun 5/1110:05 pmIAD - DUB

Nonstop7h 15mLufthansa

Deal found 4/27

$530

Mon 5/52:15 pmDUB - IAD

1 stop10h 05mIcelandair

Mon 5/128:30 pmIAD - DUB

1 stop9h 35mIcelandair

Deal found 4/29

$602

Mon 5/510:40 amDUB - IAD

1 stop13h 45mLufthansa

Tue 5/1310:05 pmIAD - DUB

Nonstop7h 15mLufthansa

Deal found 4/27

$530

Thu 5/812:30 pmSNN - IAD

1 stop23h 40mUnited Airlines

Mon 5/123:36 pmIAD - SNN

1 stop13h 39mUnited Airlines

Deal found 4/29

$541

Thu 5/89:15 pmSNN - IAD

1 stop23h 30mBritish Airways

Mon 5/1210:40 pmIAD - SNN

1 stop12h 30mBritish Airways

Deal found 4/29

$658

Thu 5/89:15 pmSNN - IAD

1 stop25h 10mAmerican Airlines

Mon 5/121:59 pmIAD - SNN

2 stops16h 21mAmerican Airlines

Deal found 4/29

$681

Fri 5/911:00 amDUB - IAD

1 stop11h 25mBritish Airways

Sat 5/1710:45 pmIAD - DUB

1 stop10h 40mBritish Airways

Deal found 4/29

$517

Fri 5/98:45 amDUB - IAD

1 stop12h 30mMultiple Airlines

Sun 5/1810:05 pmIAD - DUB

Nonstop7h 15mMultiple Airlines

Deal found 4/29

$527

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 April 29, 2025.

Mon 5/59:30 pmDUB - IAD

3 stops46h 50mMultiple Airlines

Deal found 4/27

$373

Wed 6/411:30 amDUB - IAD

2 stops16h 24mWestJet

Deal found 4/28

$374

Mon 10/62:15 pmDUB - IAD

1 stop10h 05mIcelandair

Deal found 4/28

$387

Wed 9/1010:45 amDUB - IAD

1 stop15h 05mTAP AIR PORTUGAL

Deal found 4/29

$451

Thu 8/2112:40 pmDUB - IAD

1 stop12h 19mScandinavian Airlines

Deal found 4/29

$458

Wed 9/1012:50 pmDUB - IAD

Nonstop8h 00mAer Lingus

Deal found 4/29

$465

Sun 5/118:40 amDUB - IAD

1 stop12h 35mSWISS

Deal found 4/27

$535

Sun 5/1110:40 amDUB - IAD

1 stop13h 45mLufthansa

Deal found 4/29

$539

Wed 9/104:35 pmDUB - IAD

Nonstop7h 55mBritish Airways

Deal found 4/28

$557

Tue 7/221:35 pmDUB - IAD

1 stop35h 10mTurkish Airlines

Deal found 4/29

$589

Wed 9/38:55 amDUB - IAD

2 stops15h 42mDelta

Deal found 4/28

$646

Fri 6/277:40 amSNN - IAD

2 stops16h 15mAer Lingus

Deal found 4/29

$712

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

Thu 8/28

7:05 pm-7:59 pm

1 stop29h 54m

Washington, D.C. Dulles Intl

Thu 9/4

10:05 pm-9:25 am

1 stop30h 20m

$434

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sat 5/17

2:15 pm-7:20 pm

1 stop10h 05m

Washington, D.C. Dulles Intl

Mon 5/26

11:15 pm-1:15 pm

1 stop9h 00m

$437

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 10/21

12:45 pm-8:15 pm

1 stop12h 30m

Washington, D.C. Dulles Intl

Tue 10/28

7:15 pm-9:40 am

1 stop10h 25m

$445

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 5/19

8:55 am-3:35 pm

1 stop11h 40m

Washington, D.C. Dulles Intl

Mon 5/26

8:33 pm-3:00 pm

2 stops13h 27m

$448

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 5/22

5:55 am-3:35 pm

1 stop14h 40m

Washington, D.C. Dulles Intl

Wed 5/28

5:25 pm-12:35 pm

1 stop14h 10m

$453

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 5/23

4:00 pm-6:55 pm

Nonstop7h 55m

Washington, D.C. Dulles Intl

Fri 5/30

5:20 pm-5:10 am

Nonstop6h 50m

$512

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sat 9/6

9:20 am-9:05 pm

1 stop16h 45m

Washington, D.C. Dulles Intl

Sun 9/28

10:15 pm-10:20 am

Nonstop7h 05m

$513

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 5/9

8:45 am-4:15 pm

1 stop12h 30m

Washington, D.C. Dulles Intl

Sun 5/18

10:05 pm-10:20 am

Nonstop7h 15m

$526

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sun 9/7

10:40 am-7:25 pm

1 stop13h 45m

Washington, D.C. Dulles Intl

Thu 9/25

10:15 pm-10:20 am

Nonstop7h 05m

$530

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 5/22

6:40 pm-2:25 pm

2 stops24h 45m

Washington, D.C. Dulles Intl

Sat 5/31

8:45 pm-5:50 pm

1 stop16h 05m

$558

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 35 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 $309). Flying from Ireland to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $373). 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 11% 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 Monday (11 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (10 on average).

Rainfall in Dulles Intl by month

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

Temperature in Dulles Intl by month

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown Delta, KLM and SWISS from Ireland to Washington, D.C.. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

8.0

Very good

7,929 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM

7.8

Good

1,334 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS

7.5

Good

1,588 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France

7.4

Good

1,446 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very good

7,929 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

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 WestJet ($374), Icelandair ($387), and TAP AIR PORTUGAL ($451).
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: Lufthansa (89%), Air Canada (89%), United Airlines( 89%).
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 $1,048, our data shows the cheapest flight currently is $436. When looking at the most popular route, (Dublin - Washington, D.C. Dulles Intl), you can expect to pay $429 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 $309). Flying from Ireland to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $373). 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

Alexandria

Arlington

Woodbridge

Tysons

Fairfax

Springfield

Rockville

Fredericksburg

Silver Spring

Gaithersburg

Linthicum Heights

Falls Church

Laurel

Easton

Towson

Herndon

Sterling

Bowie

National Harbor

Oxon Hill

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$603	FlexibilityNo cancel fee	On-time76%
Aer Lingus	Cheapest$433	Average$623	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$612	Average$744	FlexibilityNo cancel fee	On-time69%

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$373+ 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 5/5. 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

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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 April 29, 2025.

Most accurate provider

Most trusted provider

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 April 29, 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 April 29, 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 April 29, 2025.

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 April 29, 2025.

Rainfall in Dulles Intl by month

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

Temperature in Dulles Intl by month

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

Reviews of airlines servicing Dulles Intl

Read reviews from past customers who have flown Delta, KLM and SWISS from Ireland to Washington, D.C.. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

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

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?

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Alternative routes for Ireland to Dulles Intl

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Top 3 airlines flying from Ireland to Dulles Intl

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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 April 29, 2025.