How often are flights from Dublin to Washington, D.C. delayed?

About 13% of weekly flights between Dublin and Washington, D.C. have experienced delays in the past year, with the average delay time being 148 minutes.

Which airline has the best punctuality record on Dublin to Washington, D.C. flights?

Over the last year, Aer Lingus have had the lowest number of delays on this route, with just 13% of flights being delayed.

What is the most punctual flight time for Dublin to Washington, D.C. flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

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 13h 55m. 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 $452, 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. Check Cheapflights for deals on Aer Lingus for as low as $454. Icelandair 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 Aer Lingus. According to our data, you can fly for as low as $477. Users have also found prices from $611 and $1,079 on American Airlines and United Airlines, respectively.

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

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 (10 on average).

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.

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).

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 $211. On average you can expect to pay $1,769. The most popular route, (Dublin - Washington, D.C. Dulles Intl), can usually be booked for $447.

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: Qatar Airways (89%), American Airlines (82%), Aer Lingus( 82%).

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.

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 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.

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.

$403+ Cheap Flights from Dublin to Washington, D.C. Dulles Intl Airport

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

Cheap flight deals from Dublin to Dulles Intl

Cheapest

Best

Last-minute

One-way

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 11, 2026.

Tue 11/2411:30 am -

1 stop12h 00m

Tue 12/17:40 pm -

1 stop9h 35m

Deal found 9/10

$425

Fri 11/2011:30 am -

1 stop12h 00m

Fri 11/277:40 pm -

1 stop9h 35m

Deal found 9/8

$433

Fri 11/2011:30 am -

1 stop12h 00m

Tue 12/17:40 pm -

1 stop9h 35m

Deal found 9/7

$438

Fri 11/2011:30 am -

1 stop12h 00m

Mon 11/307:40 pm -

1 stop9h 35m

Deal found 9/7

$455

Sat 12/511:30 am -

1 stop12h 00m

Wed 12/97:40 pm -

1 stop9h 35m

Deal found 9/6

$460

Wed 11/411:30 am -

1 stop12h 00m

Tue 11/247:40 pm -

1 stop9h 35m

Deal found 9/9

$461

Wed 11/411:30 am -

1 stop12h 00m

Fri 11/277:40 pm -

1 stop9h 35m

Deal found 9/9

$484

Mon 11/168:45 am -

1 stop11h 55m

Mon 11/306:05 pm -

1 stop10h 50m

Deal found 9/10

$507

Mon 11/212:20 pm -

Nonstop8h 25m

Sun 11/88:50 pm -

Nonstop6h 55m

Deal found 9/7

$515

Mon 12/141:00 pm -

1 stop11h 55m

Thu 12/316:05 pm -

1 stop10h 50m

Deal found 9/9

$518

Tue 11/38:50 am -

1 stop11h 50m

Wed 11/256:05 pm -

1 stop10h 50m

Deal found 9/10

$522

Best flights from Dublin to Dulles Intl
Discover carefully curated flight deals from Dublin to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.

Sat 12/511:00 am -

1 stop13h 55m

Wed 12/96:05 pm -

1 stop10h 50m

Deal found 9/10

$522

Sun 11/15:45 am -

1 stop15h 00m

Sun 11/89:30 pm -

1 stop11h 55m

Deal found 9/9

$538

Tue 10/208:55 am -

1 stop11h 40m

Tue 11/36:40 pm -

1 stop14h 50m

Deal found 9/10

$542

Wed 11/181:05 pm -

1 stop11h 50m

Sun 11/226:05 pm -

1 stop10h 50m

Deal found 9/8

$522

Tue 10/208:55 am -

1 stop11h 40m

Tue 11/36:40 pm -

1 stop14h 50m

Deal found 9/8

$542

Sat 11/215:45 am -

1 stop15h 10m

Tue 12/16:20 pm -

2 stops13h 20m

Deal found 9/7

$542

Tue 10/208:55 am -

1 stop11h 40m

Tue 11/1012:35 pm -

2 stops15h 25m

Deal found 9/6

$542

Sat 11/145:45 am -

1 stop15h 10m

Sat 11/216:20 pm -

2 stops17h 00m

Deal found 9/8

$542

Mon 11/21:25 pm -

2 stops27h 25m

Sun 11/812:30 pm -

2 stops15h 30m

Deal found 9/9

$543

Last-minute flights from Dublin to Dulles Intl
Discover last-minute flight deals from Dublin to Dulles Intl. Data last updated September 11, 2026 and is based on user searches.

Tue 10/205:55 am -

1 stop14h 40m

Tue 11/106:40 pm -

1 stop14h 50m

Deal found 9/10

$542

Tue 10/208:55 am -

1 stop11h 40m

Tue 11/1012:35 pm -

2 stops15h 25m

Deal found 9/10

$543

Wed 10/215:55 am -

2 stops22h 21m

Wed 11/46:32 pm -

2 stops18h 53m

Deal found 9/7

$548

Thu 10/228:55 am -

1 stop11h 40m

Thu 10/293:03 pm -

1 stop12h 42m

Deal found 9/7

$545

Sun 10/255:45 am -

1 stop15h 00m

Sat 10/3110:30 pm -

1 stop15h 55m

Deal found 9/6

$537

Sun 10/255:45 am -

1 stop15h 00m

Sun 11/16:40 pm -

1 stop14h 45m

Deal found 9/10

$538

Wed 10/285:45 am -

1 stop15h 10m

Sun 11/17:23 am -

1 stop19h 32m

Deal found 9/6

$541

One-way flights from Dublin to Dulles Intl
Search for one-way flight options from Dublin to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.

Fri 11/138:50 am -

1 stop12h 05m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$403

Fri 11/275:45 am -

1 stop15h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/10

$404

Wed 11/43:50 pm -

Nonstop8h 30m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/6

$407

Sat 11/218:10 pm -

2 stops29h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$410

Sun 1/105:55 pm -

2 stops27h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$411

Mon 1/117:10 am -

2 stops38h 10m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$420

Tue 1/512:20 pm -

Nonstop8h 25m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/6

$430

Wed 10/287:25 pm -

2 stops25h 55m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$434

Thu 11/512:50 pm -

3 stops39h 53m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/6

$438

Find flight deals from Dublin to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$425 (Mytrip)
One-way from	$403 (Delta)
Popular in	July
Cheapest in	November
Average price	$603
Good round-trip deal	$599 or less
Good one-way deal	$590 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. 17% potential increase in price ($137 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 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

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 Dublin - IAD Washington, D.C. Dulles Intl

DUBIAD

Dublin

Fri 11/13

8:50 am-3:55 pm

1 stop12h 05m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$403

DublinWashington, D.C.

DUB Dublin - IAD Washington, D.C. Dulles Intl

DUBIAD

Dublin

Sun 2/28

8:55 am-3:45 pm

1 stop11h 50m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$404

DublinWashington, D.C.

DUB Dublin - IAD Washington, D.C. Dulles Intl

DUBIAD

Dublin

Fri 10/30

5:45 am-4:55 pm

1 stop15h 10m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$444

DublinWashington, D.C.

DUB Dublin - IAD Washington, D.C. Dulles Intl

DUBIAD

Dublin

Wed 10/28

5:45 am-4:55 pm

1 stop15h 10m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$444

DublinWashington, D.C.

DUB Dublin - IAD Washington, D.C. Dulles Intl

DUBIAD

Dublin

Fri 10/16

12:35 pm-3:45 pm

Nonstop8h 10m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$447

Quickest round-trip

DublinWashington, D.C.

DUB Dublin - IAD Washington, D.C. Dulles Intl

DUBIAD

Dublin

Thu 10/15

4:10 pm-7:10 pm

Nonstop8h 00m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$447

DublinWashington, D.C.

DUB Dublin - IAD Washington, D.C. Dulles Intl

DUBIAD

Dublin

Tue 10/13

8:55 am-3:35 pm

1 stop11h 40m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$449

DublinWashington, D.C.

DUB Dublin - IAD Washington, D.C. Dulles Intl

DUBIAD

Dublin

Wed 10/14

5:55 am-4:28 pm

2 stops15h 33m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$462

DublinWashington, D.C.

DUB Dublin - IAD Washington, D.C. Dulles Intl

DUBIAD

Dublin

Tue 12/22

6:00 am-11:15 pm

2 stops22h 15m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$464

DublinWashington, D.C.

DUB Dublin - IAD Washington, D.C. Dulles Intl

DUBIAD

Dublin

Thu 12/17

10:50 am-7:55 pm

1 stop14h 05m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-6:00 am

Nonstop0h 00m

$488

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 19 resultsSorted by cheapest first

Compare providers for flights from Dublin to Dulles Intl

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 September.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
BusinessClass	Price Accuracy-	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*3 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.

DUB-IAD

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

Prices

Airlines

Delays

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

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 35 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, November is the cheapest month in which you can book a flight from Dublin to Washington, D.C. Dulles Intl Airport (average of $480). Flying from Dublin to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $832). 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?

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?

Airfare is below average for this route at the moment.

Dublin to Washington, D.C. Dulles Intl Airport flights typically cost between $552 and $802 in November.
The cheapest round-trip price found within the last 5 days was $425 on Icelandair (Nov 24-Dec 1).

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

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

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.

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.

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.

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

Aer Lingus

7.3

Good

1,755 reviews

Reviews

1 / 20

10.0

Excellent

Patrick,Sep 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.

Aer Lingus

7.3

Good

1,755 reviews

Aer Lingus

7.3

Good

1,755 reviews

Reviews

1 / 20

10.0

Excellent

Patrick,Sep 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.

Icelandair

6.9

Okay

741 reviews

Aer Lingus

7.3

Good

1,755 reviews

Reviews

1 / 20

10.0

Excellent

Patrick,Sep 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.

Related info for your journey

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 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 13h 55m. 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 $452, 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. Check Cheapflights for deals on Aer Lingus for as low as $454. Icelandair 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 Aer Lingus. According to our data, you can fly for as low as $477. Users have also found prices from $611 and $1,079 on American Airlines and United 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: Qatar Airways (89%), American Airlines (82%), Aer Lingus( 82%).
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 $211. On average you can expect to pay $1,769. The most popular route, (Dublin - Washington, D.C. Dulles Intl), can usually be booked for $447.
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, November is the cheapest month in which you can book a flight from Dublin to Washington, D.C. Dulles Intl Airport (average of $480). Flying from Dublin to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $832). 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

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Chantilly

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Top 2 airlines flying from Dublin to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$452	Average$467	FlexibilityNo cancel fee	On-time76%
Aer Lingus	Cheapest$454	Average$643	FlexibilityNo cancel fee	On-timeN/A

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$403+ 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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dublin to Dulles Intl with Cheapflights

1. Tell us where you want to go

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Cheap flight deals from Dublin to Dulles Intl

Cheapest flights from Dublin to Dulles IntlExplore 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 11, 2026.

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 11, 2026.

Best flights from Dublin to Dulles IntlDiscover carefully curated flight deals from Dublin to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.

Discover carefully curated flight deals from Dublin to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.

Last-minute flights from Dublin to Dulles IntlDiscover last-minute flight deals from Dublin to Dulles Intl. Data last updated September 11, 2026 and is based on user searches.

Discover last-minute flight deals from Dublin to Dulles Intl. Data last updated September 11, 2026 and is based on user searches.

One-way flights from Dublin to Dulles IntlSearch for one-way flight options from Dublin to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.

Search for one-way flight options from Dublin to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.

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Use the filters below to find and compare flights from Dublin to Washington, D.C. Dulles Intl Airport that are best for you.

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 September.

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.

Cheapflights Insights

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

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 35 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?

What is the cheapest time of day to fly from DUB to IAD?

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?

Airfare is below average for this route at the moment.

Dublin to Washington, D.C. Dulles Intl Airport flights typically cost between $552 and $802 in November.The cheapest round-trip price found within the last 5 days was $425 on Icelandair (Nov 24-Dec 1).

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

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 (10 on average).

How often are flights from Dublin to Washington, D.C. delayed?

About 13% of weekly flights between Dublin and Washington, D.C. have experienced delays in the past year, with the average delay time being 148 minutes.

What is the most punctual flight time for Dublin to Washington, D.C. flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Dublin to Washington, D.C. flights?

Over the last year, Aer Lingus have had the lowest number of delays on this route, with just 13% of flights being delayed.

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

Reviews of airlines servicing Dulles Intl

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

Related info for your journey

What airport do you fly from for flights from Dublin to Washington, D.C. Dulles Intl?

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

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

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

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

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

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

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

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

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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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Alternative routes for Dublin to Dulles Intl

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Complete your trip

Complete your trip to Dulles Intl by adding a car rental and/or hotel reservation to your travel itinerary.

Other flights to Dulles Intl

Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 11, 2026.

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Dublin and Dulles Intl flights

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 11, 2026.

Best flights from Dublin to Dulles Intl
Discover carefully curated flight deals from Dublin to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.

Last-minute flights from Dublin to Dulles Intl
Discover last-minute flight deals from Dublin to Dulles Intl. Data last updated September 11, 2026 and is based on user searches.

One-way flights from Dublin to Dulles Intl
Search for one-way flight options from Dublin to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.

Dublin to Washington, D.C. Dulles Intl Airport flights typically cost between $552 and $802 in November.
The cheapest round-trip price found within the last 5 days was $425 on Icelandair (Nov 24-Dec 1).