Dulles Intl

$363+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — IAD
Apr 2 — Apr 91
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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 March 28, 2025.

Most accurate provider

Gurufare
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$387
(Mytrip)

One-way from

$363
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$502

Good round-trip deal

$751 or less

Good one-way deal

$459 or less
Provider with most accurate pricing for Dublin-Washington, D.C. (WAS) flight deals.
Provider most trusted by Cheapflights users for Dublin-Washington, D.C. (WAS) flights.
From Ireland to Washington, D.C. Dulles Intl
One-way flight from Ireland to Washington, D.C. Dulles Intl
Highest demand for flights based on searches. 18% potential increase in price ($131 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Average for round-trip flights in March 2025
Price to beat on a round-trip flight from Ireland to Washington, D.C. Dulles Intl.
Price to beat on a one-way flight from Ireland to Washington, D.C. Dulles Intl.

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 March 28, 2025.

This Mytrip deal was found by Cheapflights users on 3/27. 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.
Sat 5/108:05 pmDUB - IAD
2 stops28h 54mScandinavian Airlines
Sat 5/1710:05 pmIAD - DUB
1 stop32h 45mScandinavian Airlines
Deal found 3/27$387
This Booking.com deal was found by Cheapflights users on 3/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2912:15 pmDUB - IAD
1 stop12h 05mIcelandair
Wed 5/78:30 pmIAD - DUB
1 stop11h 45mIcelandair
Deal found 3/26$440
This lastminute.com deal was found by Cheapflights users on 3/26. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/64:35 pmDUB - IAD
Nonstop7h 55mAer Lingus
Sun 5/185:20 pmIAD - DUB
Nonstop6h 50mAer Lingus
Deal found 3/26$478
This Booking.com deal was found by Cheapflights users on 3/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/610:30 amDUB - IAD
1 stop14h 45mBritish Airways
Tue 4/1510:40 pmIAD - DUB
1 stop13h 25mBritish Airways
Deal found 3/27$494
This American Airlines deal was found by Cheapflights users on 3/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1110:30 amDUB - IAD
1 stop14h 40mAmerican Airlines
Sun 5/1810:40 pmIAD - DUB
1 stop10h 35mAmerican Airlines
Deal found 3/27$495
This Delta deal was found by Cheapflights users on 3/27. 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.
Sun 4/135:55 amDUB - IAD
1 stop14h 40mDelta
Mon 4/219:20 pmIAD - DUB
1 stop12h 40mDelta
Deal found 3/27$502
This KLM deal was found by Cheapflights users on 3/26. 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.
Sun 4/68:45 pmDUB - IAD
1 stop23h 50mKLM
Tue 4/1512:11 pmIAD - DUB
1 stop16h 04mKLM
Deal found 3/26$506
This KLM deal was found by Cheapflights users on 3/26. 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.
Thu 4/35:10 pmORK - IAD
1 stop27h 25mKLM
Mon 4/79:20 pmIAD - ORK
1 stop12h 20mKLM
Deal found 3/26$514
This Gotogate deal was found by Cheapflights users on 3/27. 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.
Thu 10/2312:30 pmDUB - IAD
Nonstop8h 05mMultiple Airlines
Sun 11/28:45 pmIAD - DUB
1 stop34h 20mMultiple Airlines
Deal found 3/27$595
This TravelUp deal was found by Cheapflights users on 3/26. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/112:30 pmDUB - IAD
Nonstop8h 00mLufthansa
Mon 5/510:05 pmIAD - DUB
Nonstop7h 15mLufthansa
Deal found 3/26$605
This United Airlines deal was found by Cheapflights users on 3/26. 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.
Fri 10/248:50 amDUB - IAD
Nonstop8h 00mUnited Airlines
Tue 11/1110:05 pmIAD - DUB
Nonstop7h 00mUnited Airlines
Deal found 3/26$613
This oojo deal was found by Cheapflights users on 3/27. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/37:40 amSNN - IAD
2 stops21h 18mBritish Airways
Mon 4/75:40 pmIAD - SNN
1 stop17h 30mBritish Airways
Deal found 3/27$620

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 March 28, 2025.
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

Sat 5/10

8:05 pm-7:59 pm

2 stops28h 54m

Washington, D.C. Dulles Intl

Sat 5/17

10:05 pm-11:50 am

1 stop32h 45m

$387

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 4/29

12:15 pm-7:20 pm

1 stop12h 05m

Washington, D.C. Dulles Intl

Wed 5/7

8:30 pm-1:15 pm

1 stop11h 45m

$440

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 5/6

4:35 pm-7:30 pm

Nonstop7h 55m

Washington, D.C. Dulles Intl

Sun 5/18

5:20 pm-5:10 am

Nonstop6h 50m

$478

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sun 4/6

10:30 am-8:15 pm

1 stop14h 45m

Washington, D.C. Dulles Intl

Mon 4/14

10:40 pm-2:40 pm

1 stop11h 00m

$494

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sun 5/11

10:30 am-8:10 pm

1 stop14h 40m

Washington, D.C. Dulles Intl

Sun 5/18

10:40 pm-2:15 pm

1 stop10h 35m

$495

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sun 4/13

5:55 am-3:35 pm

1 stop14h 40m

Washington, D.C. Dulles Intl

Mon 4/21

9:20 pm-3:00 pm

1 stop12h 40m

$502

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sun 4/6

8:45 pm-3:35 pm

1 stop23h 50m

Washington, D.C. Dulles Intl

Tue 4/15

12:11 pm-9:15 am

1 stop16h 04m

$506

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 5/1

12:30 pm-3:30 pm

Nonstop8h 00m

Washington, D.C. Dulles Intl

Mon 5/5

10:05 pm-10:20 am

Nonstop7h 15m

$605

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 5/1

8:40 am-4:15 pm

1 stop12h 35m

Washington, D.C. Dulles Intl

Mon 5/5

10:05 pm-10:20 am

Nonstop7h 15m

$617

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sun 5/11

9:50 am-9:39 am

1 stop28h 49m

Washington, D.C. Dulles Intl

Sun 5/18

7:00 pm-7:10 am

Nonstop7h 10m

$623

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 39 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, 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 $385). 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 March 28, 2025.

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 10% versus a flight in the morning.

Rainfall in Dulles Intl by month

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

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

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 March 28, 2025.
Read reviews from past customers who have flown Delta, KLM and Austrian Airlines 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.
8.0
Very good

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

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
8.0
Very good
8.0
Very good

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

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
8.0
Very good

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

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
8.0
Very good

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

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
8.0
Very good

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

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
8.0
Very good

Comfort

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

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

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?

    The cheapest airlines for a one-way flight from Ireland to Washington, D.C. Dulles Intl Airport are Icelandair ($371), Scandinavian Airlines ($428), and TAP AIR PORTUGAL ($430).

  • 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?

    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 (91%), United Airlines (91%), Lufthansa( 91%).

  • 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 $1,171, our data shows the cheapest flight currently is $408. When looking at the most popular route, (Dublin - Washington, D.C. Dulles Intl), you can expect to pay $386 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 $385). 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 Ireland?

Book flights to Ireland if you plan to visit one of these locations
Arlington
Alexandria
Fairfax
Tysons
Springfield
Rockville
Woodbridge
Gaithersburg
Fredericksburg
Linthicum Heights
Silver Spring
Falls Church
Laurel
Easton
Herndon
Sterling
Bowie
Gettysburg
National Harbor
Oxon Hill

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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.

Top 3 airlines flying from Ireland to Dulles Intl

Discover the top 3 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$256Average$330FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$433Average$639FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$612Average$744FlexibilityNo cancel feeOn-time69%
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