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Dulles Intl

$351+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — IAD
May 1 — May 81
Fri 5/1
Fri 5/8
1 adult, Economy
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Find cheap flights from Dublin to Dulles Intl with Cheapflights

1. Tell us where you want to go

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3. Compare prices and book

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Cheapflights Tip: The best prices from Dublin to Washington, D.C. Dulles Intl are usually found in November or September, booked 37 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap 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 April 1, 2026.

This Gotogate deal was found by Cheapflights users on 3/29. 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.
Sat 10/102:15 pm
DUB
-
IAD
1 stop10h 05m
Icelandair
Sat 10/178:30 pm
IAD
-
DUB
1 stop9h 35m
Icelandair
Deal found 3/29$505
This deal was found by Cheapflights users on 3/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/172:15 pm
DUB
-
IAD
1 stop10h 05m
Icelandair
Sun 9/208:30 pm
IAD
-
DUB
1 stop11h 45m
Icelandair
Deal found 3/31$507
This Mytrip deal was found by Cheapflights users on 4/1. 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.
Fri 4/1712:15 pm
DUB
-
IAD
1 stop12h 05m
Icelandair
Mon 4/208:30 pm
IAD
-
DUB
1 stop11h 45m
Icelandair
Deal found 4/1$509
This Gotogate deal was found by Cheapflights users on 4/1. 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.
Fri 4/1712:15 pm
DUB
-
IAD
1 stop12h 05m
Icelandair
Sun 4/198:30 pm
IAD
-
DUB
1 stop11h 45m
Icelandair
Deal found 4/1$512
This Mytrip deal was found by Cheapflights users on 3/29. 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.
Thu 4/3012:40 pm
DUB
-
IAD
2 stops35h 40m
Multiple Airlines
Mon 5/48:30 pm
IAD
-
DUB
2 stops20h 30m
Multiple Airlines
Deal found 3/29$517
This Gotogate deal was found by Cheapflights users on 3/31. 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.
Tue 9/12:15 pm
DUB
-
IAD
1 stop13h 00m
Icelandair
Sat 9/128:30 pm
IAD
-
DUB
1 stop9h 35m
Icelandair
Deal found 3/31$520
This Expedia deal was found by Cheapflights users on 3/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/302:15 pm
DUB
-
IAD
1 stop10h 05m
Icelandair
Wed 5/68:30 pm
IAD
-
DUB
1 stop11h 45m
Icelandair
Deal found 3/30$529
This FlightHub deal was found by Cheapflights users on 4/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1812:15 pm
DUB
-
IAD
1 stop15h 00m
Icelandair
Mon 9/218:30 pm
IAD
-
DUB
1 stop11h 45m
Icelandair
Deal found 4/1$536
This Icelandair deal was found by Cheapflights users on 3/31. 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.
Thu 4/92:15 pm
DUB
-
IAD
1 stop10h 05m
Icelandair
Sat 4/188:30 pm
IAD
-
DUB
1 stop9h 35m
Icelandair
Deal found 3/31$543

Find 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 April 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$507

One-way from

$351
(Kiwi.com)

Popular in

July

Cheapest in

November

Average price

$549

Good round-trip deal

$662 or less

Good one-way deal

$559 or less
Provider with most accurate pricing for Dublin-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dublin-Washington, D.C. Dulles Intl flights.
Search Deals
From Dublin to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Dublin to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($137 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Dublin to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Dublin to Washington, D.C. Dulles Intl.
Search Deals

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 April 1, 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 4/16

2:15 pm-7:20 pm

1 stop10h 05m

Washington, D.C. Dulles Intl

Mon 4/20

8:30 pm-1:15 pm

1 stop11h 45m

$543
Quickest round-trip

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 8/25

2:15 pm-7:20 pm

1 stop10h 05m

Washington, D.C. Dulles Intl

Tue 9/22

8:30 pm-11:05 am

1 stop9h 35m

$558

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 5/13

8:55 am-3:35 pm

1 stop11h 40m

Washington, D.C. Dulles Intl

Mon 5/25

9:45 pm-6:25 pm

1 stop15h 40m

$621

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 6/11

8:55 am-3:35 pm

1 stop11h 40m

Washington, D.C. Dulles Intl

Thu 6/18

11:05 am-9:15 am

1 stop17h 10m

$621

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 4/30

5:55 am-4:15 pm

2 stops15h 20m

Washington, D.C. Dulles Intl

Sat 5/16

11:15 am-10:00 am

1 stop17h 45m

$632

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 4/27

8:30 am-3:55 pm

1 stop12h 25m

Washington, D.C. Dulles Intl

Sun 5/3

7:15 pm-12:05 pm

1 stop11h 50m

$642

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 5/1

5:20 pm-3:35 pm

1 stop27h 15m

Washington, D.C. Dulles Intl

Fri 5/15

5:40 pm-10:25 am

1 stop11h 45m

$682

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 5/1

1:25 pm-12:42 am

2 stops16h 17m

Washington, D.C. Dulles Intl

Fri 5/15

5:40 pm-10:25 am

1 stop11h 45m

$711
Cheapest one-way

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sun 8/30

6:50 pm-3:10 pm

1 stop25h 20m

$492

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 9/2

10:45 am-3:10 pm

1 stop33h 25m

$522

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/29

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Compare providers for flights from Dublin to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dublin to Dulles Intl in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy1 starTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Dublin-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Dublin-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Dublin-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Dublin-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Dublin-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 March 13, 2026.

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 36 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, December is the cheapest month in which you can book a flight from Dublin to Washington, D.C. Dulles Intl Airport (average of $366). Flying from Dublin to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $621). 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 April 1, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Dublin to Washington, D.C. Dulles Intl Airport as you normally would.

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

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

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Dublin to Washington, D.C. Dulles Intl Airport trip
Our travel experts
Evie Carrick

Evie Carrick

Expert on Aer Lingus

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 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

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

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

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 April 1, 2026.
Read through reviews of airlines operating flights from Dublin to Washington, D.C. Dulles Intl Airport, such as United Airlines and Aer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,534 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,534 reviews
United Airlines
7.4
Good
9,534 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Aer Lingus
7.2
Good
1,495 reviews
United Airlines
7.4
Good
9,534 reviews

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

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 12 outbound flights to Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 2 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 10h 05m. There are 3393 mi between Dublin and Washington, D.C. Dulles Intl Airport. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Currently priced at $455, Aer Lingus will fly you from Dublin to Washington, D.C. Dulles Intl Airport and back. In addition to Aer Lingus, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $684. Aer Lingus is 26% 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 Icelandair. According to our data, you can fly for as low as $335. Users have also found prices from $439 and $494 on Aer Lingus and American Airlines, 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: American Airlines (75%), Aer Lingus (75%), Iberia( 75%).

  • 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 $485. On average you can expect to pay $727. The most popular route, (Dublin - Washington, D.C. Dulles Intl), can usually be booked for $506.

  • 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, December is the cheapest month in which you can book a flight from Dublin to Washington, D.C. Dulles Intl Airport (average of $366). Flying from Dublin to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $621). 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
Alexandria
Woodbridge
Tysons
Owings Mills
Arlington
Springfield
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Fredericksburg
Largo
Bowie
Clinton
Towson
Cordova
Manassas

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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
Shannon to Dulles Intl flights
Cork to Baltimore flights

Top 2 airlines flying from Dublin to Dulles Intl

Discover the top 2 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 April 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest$455Average$670FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$684Average$874FlexibilityNo cancel feeOn-time69%

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