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Dulles Intl

$342+ Cheap flights from Dublin (DUB) 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — IAD
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Dublin to Washington, D.C. Dulles Intl are usually found in February or November, booked 73 days in advance, depart on a Friday or Sunday and return on a Tuesday

Cheap flight deals from Dublin to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Dublin (DUB) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 16, 2025.

Round-trip from

$398
(Icelandair)

One-way from

$342
(Mytrip)

Popular in

August

Cheapest in

February

Average price

$526

Good round-trip deal

$724 or less

Good one-way deal

$520 or less
From Dublin to Washington, D.C. Dulles Intl
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One-way flight from Dublin to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 13% potential increase in price ($91 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Dublin to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Dublin to Washington, D.C. Dulles Intl.
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Find flight deals from Dublin to Dulles Intl

Cheapest flights from Dublin to Dulles Intl
Explore the most affordable flight options available from Dublin to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Icelandair deal was found by Cheapflights users on 9/13. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/511:30 amDUB - IAD
1 stop12h 00mIcelandair
Mon 12/87:40 pmIAD - DUB
1 stop9h 35mIcelandair
Deal found 9/13$398
This TravelUp deal was found by Cheapflights users on 9/15. 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 10/3011:45 amDUB - IAD
1 stop13h 30mLufthansa
Thu 11/610:20 pmIAD - DUB
Nonstop7h 00mLufthansa
Deal found 9/15$400
This TravelUp deal was found by Cheapflights users on 9/15. 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 10/3011:45 amDUB - IAD
1 stop13h 30mMultiple Airlines
Thu 11/68:30 pmIAD - DUB
1 stop16h 15mMultiple Airlines
Deal found 9/15$403
This SmartFares deal was found by Cheapflights users on 9/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/611:30 amDUB - IAD
1 stop12h 00mIcelandair
Tue 1/67:40 pmIAD - DUB
1 stop9h 35mIcelandair
Deal found 9/14$411
This SmartFares deal was found by Cheapflights users on 9/14. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/611:30 amDUB - IAD
1 stop12h 00mIcelandair
Fri 5/88:30 pmIAD - DUB
1 stop11h 45mIcelandair
Deal found 9/14$417
This TravelUp deal was found by Cheapflights users on 9/14. 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.
Sun 10/263:55 pmDUB - IAD
1 stop28h 40mBritish Airways
Sun 11/29:45 pmIAD - DUB
1 stop14h 05mBritish Airways
Deal found 9/14$418
This Mytrip deal was found by Cheapflights users on 9/14. 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.
Wed 10/295:10 amDUB - IAD
1 stop15h 40mLufthansa
Wed 11/510:55 pmIAD - DUB
1 stop13h 15mLufthansa
Deal found 9/14$425
This Travelis deal was found by Cheapflights users on 9/14. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/315:10 amDUB - IAD
1 stop14h 25mLufthansa
Thu 11/610:20 pmIAD - DUB
Nonstop7h 00mLufthansa
Deal found 9/14$426
This lastminute.com deal was found by Cheapflights users on 9/14. 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.
Wed 10/294:20 pmDUB - IAD
Nonstop8h 10mAer Lingus
Wed 11/55:05 pmIAD - DUB
Nonstop6h 50mAer Lingus
Deal found 9/14$428
This American Airlines deal was found by Cheapflights users on 9/15. 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 10/263:55 pmDUB - IAD
1 stop28h 40mAmerican Airlines
Sun 11/29:45 pmIAD - DUB
1 stop14h 05mAmerican Airlines
Deal found 9/15$429
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Wed 12/171:10 pmDUB - IAD
1 stop31h 25mAmerican Airlines
Wed 12/316:35 amIAD - DUB
2 stops24h 40mAmerican Airlines
Deal found 9/16$430
This Lufthansa deal was found by Cheapflights users on 9/15. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/15:10 amDUB - IAD
1 stop14h 25mLufthansa
Sat 11/810:20 pmIAD - DUB
Nonstop7h 00mLufthansa
Deal found 9/15$431

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dublin 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 September 16, 2025.
Use the filters below to find and compare flights from Dublin to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Dublin

Fly to

Dulles Intl

Route

Depart

Return

Price

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sat 11/1

5:10 am-3:35 pm

1 stop14h 25m

Washington, D.C. Dulles Intl

Sun 11/9

10:20 pm-10:20 am

Nonstop7h 00m

$431

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sat 11/1

5:10 am-3:35 pm

1 stop14h 25m

Washington, D.C. Dulles Intl

Fri 11/7

10:20 pm-10:20 am

Nonstop7h 00m

$431

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sat 11/1

5:10 am-9:15 pm

1 stop20h 05m

Washington, D.C. Dulles Intl

Sat 11/8

10:20 pm-10:20 am

Nonstop7h 00m

$431

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 11/3

5:10 am-3:50 pm

1 stop15h 40m

Washington, D.C. Dulles Intl

Sun 11/9

10:20 pm-10:20 am

Nonstop7h 00m

$431

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sun 11/2

5:10 am-3:35 pm

1 stop14h 25m

Washington, D.C. Dulles Intl

Sun 11/9

10:20 pm-10:20 am

Nonstop7h 00m

$431

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 12/16

8:50 am-3:35 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Sun 12/28

6:20 pm-7:40 pm

1 stop20h 20m

$432

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 12/16

8:50 am-3:35 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Thu 12/25

6:20 pm-2:10 pm

1 stop14h 50m

$432

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 12/11

1:10 pm-7:55 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Thu 1/8

6:20 pm-2:10 pm

1 stop14h 50m

$432

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sat 11/1

5:10 am-9:15 pm

1 stop20h 05m

Washington, D.C. Dulles Intl

Sat 11/8

8:30 pm-5:45 pm

1 stop16h 15m

$434

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sat 11/1

5:10 am-9:15 pm

1 stop20h 05m

Washington, D.C. Dulles Intl

Sun 11/9

8:30 pm-5:45 pm

1 stop16h 15m

$434

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 20 results
1
2

The best insider tips for Dublin to Washington, D.C. Dulles Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Dublin to Washington, D.C. Dulles Intl Airport trip
Airlines
Aer Lingus

Pre-clear US immigration in Dublin, saving time upon arrival in the US.


Enjoy a complimentary hot meal and drinks on transatlantic flights.

Read more about Aer Lingusby Evie Carrick
United Airlines

Polaris passengers access exclusive lounges with showers and dining at IAD.


Premium Plus offers extra legroom and upgraded meals on international flights.

Read more about United Airlinesby Harriet Baskas
Airports
DUB

For US travelers, preclearance at DUB can be time-consuming. Allow 30-45 minutes after security to complete this process.

Read more about DUBby James March
IAD

The Washington Metro Silver line reaches IAD in under 40 minutes, offering a cheap city transit option.

Read more about IADby Ramsey Qubein
Our travel experts
Evie Carrick

Evie Carrick

Expert on Aer Lingus

Evie Carrick

Evie Carrick

Evie Carrick is a writer and editor who has lived in five countries and traveled to over 50, with extensive experience flying around the world. She was born in Colorado, but has spent time flying to both coasts to visit family. She writes regularly for Travel + Leisure, BuzzFeed, and SKI and recently published seven travel journals with Simon & Schuster.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
James March

James March

Expert on DUB

James March

James March

For UK-based James March, nothing beats the thrill and chaos of arriving in a new city for the first time, and he tries to put that feeling into his writing and inspire others to travel too. From Birmingham to Blackpool and Leicester to Liverpool, James has reviewed hotels, written narratives and created guides for those who love to travel.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from Dublin to Dulles Intl

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

How far ahead should I book a flight from Dublin to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Dublin to Dulles Intl. Price data was last updated on September 12, 2025.

The price you pay for your flight from Dublin to Washington, D.C. Dulles Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 73 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Dublin to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Dublin 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 DUB to IAD?

Find hourly flight availability from Dublin 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 16, 2025.

It’s typically best to fly out from Dublin to Washington, D.C. Dulles Intl Airport in the afternoon. Doing so could potentially save you 29% on the flight price compared to flying in the morning, which is usually more expensive.

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 September 16, 2025.
Read through reviews of airlines operating flights from Dublin to Washington, D.C. Dulles Intl Airport, such as United Airlines, Aer Lingus, and Icelandair. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,924 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

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
8,924 reviews
United Airlines
7.4
Good
8,924 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

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
1,274 reviews
United Airlines
7.4
Good
8,924 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

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
544 reviews
United Airlines
7.4
Good
8,924 reviews

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

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

Find useful and relevant information for your journey from Dublin 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 airport do you fly from for flights from Dublin to Washington, D.C. Dulles Intl?

    Dublin (DUB) is the airport you will fly out of if you book a flight from Dublin to Washington, D.C. Dulles Intl. You should not have trouble finding flights to Washington, D.C. Dulles Intl from Dublin; the airport handles an average of 11 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the Dublin airport to Washington, D.C. Dulles Intl. It is only a 5.7 mi journey to Dublin (DUB) from Dublin’s city center.

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

    Departing from Dublin to Washington, D.C. Dulles Intl Airport will take you 14h 25m. There are 3393 mi between Dublin and Washington, D.C. Dulles Intl Airport.

  • What are the cheapest airlines flying from Dublin to Washington, D.C. Dulles Intl Airport round-trip?

    Currently priced at $425, Icelandair will fly you from Dublin to Washington, D.C. Dulles Intl Airport and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Aer Lingus and United Airlines - these airlines can fly you to your destination from $457 and $612, respectively. Icelandair is 29% cheaper than the average price of flights available within the next 90 days to this destination.

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

    Before booking your flight to Washington, D.C. Dulles Intl Airport from Dublin, check out the most reliable airlines to get you to your destination on time: Air Canada (72%), United Airlines (72%), Lufthansa( 68%).

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

    The cheapest flight price from Dublin to Washington, D.C. Dulles Intl Airport is $472. On average you can expect to pay $848. The most popular route, (Dublin - Washington, D.C. Dulles Intl), can usually be booked for $398.

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

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

  • How can I find direct flights from Dublin to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dublin to Dulles Intl.

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

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

    Currently, August is the cheapest month in which you can book a flight from Dublin to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Dublin 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

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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
National Harbor
Dundalk

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Alternative routes for Dublin to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Dublin to Baltimore flights
Dublin to Reagan-National flights
Cork to Baltimore flights
Shannon to Baltimore flights
Shannon to Dulles Intl flights

Top 3 airlines flying from Dublin to Dulles Intl

Discover the top 3 airlines that operate flights from Dublin 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$425Average$608FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$457Average$657FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$612Average$802FlexibilityNo cancel feeOn-time69%

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