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Dulles Intl

$399+ Cheap flights from Dublin (DUB) to Dulles Intl (IAD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/29. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — IAD
Jul 28 — Aug 41
Mon 7/28
Mon 8/4
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 January, booked 73 days in advance, depart on a Monday or Wednesday 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 July 23, 2025.

Round-trip from

$399
(Justfly.com)

Popular in

July

Cheapest in

February

Average price

$756

Good round-trip deal

$583 or less

Good one-way deal

$614 or less
From Dublin to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 15% potential increase in price ($106 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 23, 2025.

This Justfly.com deal was found by Cheapflights users on 7/23. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/294:55 pmDUB - IAD
1 stop27h 20mTAP AIR PORTUGAL
Wed 11/1210:30 pmIAD - DUB
1 stop19h 50mTAP AIR PORTUGAL
Deal found 7/23$399
This Justfly.com deal was found by Cheapflights users on 7/23. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2912:30 pmDUB - IAD
1 stop33h 45mScandinavian Airlines
Thu 11/138:30 pmIAD - DUB
1 stop31h 55mScandinavian Airlines
Deal found 7/23$405
This Icelandair deal was found by Cheapflights users on 7/23. 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 10/3111:30 amDUB - IAD
1 stop11h 50mIcelandair
Fri 11/147:40 pmIAD - DUB
1 stop9h 35mIcelandair
Deal found 7/23$467
This Delta deal was found by Cheapflights users on 7/23. 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.
Mon 10/275:55 amDUB - IAD
1 stop15h 10mDelta
Wed 11/126:50 pmIAD - DUB
1 stop15h 55mDelta
Deal found 7/23$518
This KLM deal was found by Cheapflights users on 7/23. 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.
Mon 10/278:50 amDUB - IAD
1 stop12h 15mKLM
Thu 11/135:10 pmIAD - DUB
1 stop10h 35mKLM
Deal found 7/23$519
This Lufthansa deal was found by Cheapflights users on 7/21. 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.
Mon 9/15:55 amDUB - IAD
1 stop14h 55mLufthansa
Sun 9/710:15 pmIAD - DUB
Nonstop7h 05mLufthansa
Deal found 7/21$521
This Gotogate deal was found by Cheapflights users on 7/21. 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 9/412:50 pmDUB - IAD
Nonstop8h 00mAer Lingus
Wed 9/109:00 pmIAD - DUB
Nonstop6h 50mAer Lingus
Deal found 7/21$523
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Thu 9/49:20 amDUB - IAD
1 stop11h 58mUnited Airlines
Wed 9/107:05 pmIAD - DUB
Nonstop7h 05mUnited Airlines
Deal found 7/21$528
This American Airlines deal was found by Cheapflights users on 7/23. 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.
Mon 10/271:00 pmDUB - IAD
1 stop11h 55mAmerican Airlines
Thu 11/131:58 pmIAD - DUB
2 stops13h 42mAmerican Airlines
Deal found 7/23$538
This TravelUp deal was found by Cheapflights users on 7/22. 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.
Fri 9/59:20 amDUB - IAD
1 stop26h 11mMultiple Airlines
Thu 9/1110:15 pmIAD - DUB
Nonstop7h 05mMultiple Airlines
Deal found 7/22$540
This Air Canada deal was found by Cheapflights users on 7/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/49:20 amDUB - IAD
2 stops12h 08mAir Canada
Wed 9/1012:41 pmIAD - DUB
2 stops14h 04mAir Canada
Deal found 7/21$553
This SWISS deal was found by Cheapflights users on 7/22. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/56:40 pmDUB - IAD
2 stops24h 45mSWISS
Fri 9/128:45 pmIAD - DUB
1 stop34h 25mSWISS
Deal found 7/22$569

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 July 23, 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

Wed 10/29

4:55 pm-4:15 pm

1 stop27h 20m

Washington, D.C. Dulles Intl

Fri 11/14

10:30 pm-11:20 pm

1 stop19h 50m

$399

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 10/29

12:30 pm-6:15 pm

1 stop33h 45m

Washington, D.C. Dulles Intl

Thu 11/13

8:30 pm-9:25 am

1 stop31h 55m

$405

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 10/31

11:30 am-7:20 pm

1 stop11h 50m

Washington, D.C. Dulles Intl

Fri 11/14

7:40 pm-10:15 am

1 stop9h 35m

$467

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 10/27

5:55 am-5:05 pm

1 stop15h 10m

Washington, D.C. Dulles Intl

Wed 11/12

6:50 pm-3:45 pm

1 stop15h 55m

$518

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 10/27

8:50 am-5:05 pm

1 stop12h 15m

Washington, D.C. Dulles Intl

Thu 11/13

5:10 pm-8:45 am

1 stop10h 35m

$519

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 9/1

5:55 am-3:50 pm

1 stop14h 55m

Washington, D.C. Dulles Intl

Sun 9/7

10:15 pm-10:20 am

Nonstop7h 05m

$521

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 9/4

12:50 pm-3:50 pm

Nonstop8h 00m

Washington, D.C. Dulles Intl

Wed 9/10

9:00 pm-8:50 am

Nonstop6h 50m

$523

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 9/4

9:20 am-4:18 pm

1 stop11h 58m

Washington, D.C. Dulles Intl

Wed 9/10

7:05 pm-7:10 am

Nonstop7h 05m

$528

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 10/27

1:00 pm-8:55 pm

1 stop11h 55m

Washington, D.C. Dulles Intl

Thu 11/13

1:58 pm-8:40 am

2 stops13h 42m

$538

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 9/5

9:20 am-6:31 am

1 stop26h 11m

Washington, D.C. Dulles Intl

Thu 9/11

10:15 pm-10:20 am

Nonstop7h 05m

$540

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

Showing 1-10 of 18 results
1
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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 July 18, 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 $309). 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 July 23, 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 27% on the flight price compared to flying in the morning, which is usually more expensive.

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

Explore weekly flight availability from Dublin 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 July 23, 2025.

The most flights from DUB to IAD are scheduled on a Monday (14 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (13 on average).

How much does it cost to fly round-trip from Dublin to Washington, D.C. Dulles Intl Airport?

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 July 23, 2025.
Read through reviews of airlines operating flights from Dublin to Washington, D.C. Dulles Intl Airport, such as Delta, KLM, and SWISS. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,967 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,967 reviews
Delta
8.0
Very good
7,967 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
KLM
7.8
Good
1,375 reviews
Delta
8.0
Very good
7,967 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
SWISS
7.5
Good
1,676 reviews
Delta
8.0
Very good
7,967 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,873 reviews
Delta
8.0
Very good
7,967 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Scandinavian Airlines
7.3
Good
1,442 reviews
Delta
8.0
Very good
7,967 reviews

Crew

8.5

Entertainment

7.9

Boarding

8.2

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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 13 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.

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

    Currently priced at $399, TAP AIR PORTUGAL will fly you from Dublin to Washington, D.C. Dulles Intl Airport and back. In addition to TAP AIR PORTUGAL, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Scandinavian Airlines and Icelandair - these airlines can fly you to your destination from $405 and $467, respectively. TAP AIR PORTUGAL is 31% cheaper than the average price of flights available within the next 90 days to this destination.

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

    For one-way options, check prices for Scandinavian Airlines. According to our data, you can fly for as low as $451. Users have also found prices from $464 and $471 on Icelandair and WestJet, respectively.

  • 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: Iberia (87%), American Airlines (77%), Aer Lingus( 77%).

  • 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 $495. On average you can expect to pay $1,074. The most popular route, (Dublin - Washington, D.C. Dulles Intl), can usually be booked for $375.

  • 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 $309). 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
Fredericksburg
Gaithersburg
Easton
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Waldorf
Laurel
Rockville
Oxon Hill
Springfield
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 Dulles Intl flights
Shannon to Baltimore 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 July 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$425Average$608FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$446Average$598FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$569Average$756FlexibilityNo cancel feeOn-time69%

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