HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Washington, D.C.

$382+ Cheap flights from Ireland to Washington, D.C. (WAS)

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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — WAS
Jun 10 — Jun 171
Wed 6/10
Wed 6/17
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ireland to Washington, D.C. with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ireland to Washington, D.C.

Cheapest flights from Ireland to Washington, D.C.
Explore the most affordable flight options available from Ireland to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 11, 2026.

This TravelUp deal was found by Cheapflights users on 5/8. 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 6/1111:30 am
DUB
-
DCA
1 stop16h 29m
JetBlue
Tue 6/166:15 am
DCA
-
DUB
1 stop21h 45m
JetBlue
Deal found 5/8$486
This Super.com deal was found by Cheapflights users on 5/10. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1611:30 am
DUB
-
DCA
1 stop16h 29m
JetBlue
Sun 7/269:00 am
DCA
-
DUB
1 stop18h 20m
JetBlue
Deal found 5/10$523
This SmartFares deal was found by Cheapflights users on 5/11. 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.
Mon 6/1511:30 am
DUB
-
DCA
1 stop16h 29m
JetBlue
Mon 6/295:46 pm
DCA
-
DUB
1 stop9h 34m
JetBlue
Deal found 5/11$528
This deal was found by Cheapflights users on 5/10. 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.
Wed 7/2211:45 am
DUB
-
DCA
1 stop11h 37m
American Airlines
Tue 7/285:22 pm
DCA
-
DUB
1 stop13h 28m
American Airlines
Deal found 5/10$531
This JetBlue deal was found by Cheapflights users on 5/8. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/2411:30 am
DUB
-
DCA
1 stop16h 29m
JetBlue
Mon 6/296:41 pm
DCA
-
DUB
1 stop8h 39m
JetBlue
Deal found 5/8$535
This JetBlue deal was found by Cheapflights users on 5/10. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1511:30 am
DUB
-
DCA
1 stop16h 29m
JetBlue
Tue 7/2811:00 am
DCA
-
DUB
1 stop16h 20m
JetBlue
Deal found 5/10$537
This JetBlue deal was found by Cheapflights users on 5/10. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/710:40 am
DUB
-
DCA
1 stop10h 37m
JetBlue
Tue 10/135:14 pm
DCA
-
DUB
1 stop10h 06m
JetBlue
Deal found 5/10$538
This Flysmarter deal was found by Cheapflights users on 5/8. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2211:30 am
DUB
-
DCA
1 stop16h 29m
JetBlue
Tue 7/289:00 am
DCA
-
DUB
1 stop18h 20m
JetBlue
Deal found 5/8$541
This Expedia deal was found by Cheapflights users on 5/8. 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.
Fri 5/2211:30 am
DUB
-
DCA
1 stop16h 29m
JetBlue
Tue 5/266:00 am
DCA
-
DUB
1 stop22h 00m
JetBlue
Deal found 5/8$542
This Justfly.com deal was found by Cheapflights users on 5/10. 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 7/1511:30 am
DUB
-
DCA
1 stop16h 29m
JetBlue
Sat 7/258:55 pm
DCA
-
DUB
1 stop30h 25m
JetBlue
Deal found 5/10$544
This Justfly.com deal was found by Cheapflights users on 5/9. 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 9/3010:40 am
DUB
-
DCA
1 stop11h 44m
JetBlue
Mon 10/51:20 pm
DCA
-
DUB
1 stop14h 00m
JetBlue
Deal found 5/9$545
This deal was found by Cheapflights users on 5/10. 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.
Wed 7/228:35 am
DUB
-
IAD
1 stop13h 50m
British Airways
Tue 7/2810:25 pm
IAD
-
DUB
1 stop11h 10m
British Airways
Deal found 5/10$546

Find flight deals from Ireland to Washington, D.C.

Keep the following information in mind while searching for Ireland to Washington, D.C. flight deals. Data was last updated May 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$486
(TravelUp)

One-way from

$382
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$683

Good round-trip deal

$776 or less

Good one-way deal

$572 or less
Provider with most accurate pricing for Dublin-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Dublin-Washington, D.C. (WAS) flights.
Search Deals
From Ireland to Washington, D.C. (WAS)
Search Deals
One-way flight from Ireland to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($8 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 May 2026
Search Deals
Price to beat on a round-trip flight from Ireland to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from Ireland to Washington, D.C. (WAS).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ireland to Washington, D.C. 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 May 11, 2026.
Use the filters below to find and compare flights from Ireland to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Wed 6/24

11:30 am-10:59 pm

1 stop16h 29m

Washington, D.C. Reagan-National

Mon 6/29

11:00 am-8:20 am

1 stop16h 20m

$535

CorkWashington, D.C.

ORK - IAD

ORKIAD

Cork

Sun 5/24

6:15 am-3:35 pm

1 stop14h 20m

Washington, D.C. Dulles Intl

Sat 5/30

9:45 pm-2:25 pm

1 stop11h 40m

$587

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 5/22

5:55 am-3:35 pm

1 stop14h 40m

Washington, D.C. Dulles Intl

Mon 5/25

6:15 pm-3:25 pm

1 stop16h 10m

$589

ShannonWashington, D.C.

SNN - DCA

SNNDCA

Shannon

Fri 6/19

1:05 pm-11:21 pm

1 stop15h 16m

Washington, D.C. Reagan-National

Sun 6/21

6:06 am-11:10 am

1 stop24h 04m

$590

CorkWashington, D.C.

ORK - IAD

ORKIAD

Cork

Thu 5/28

5:10 pm-3:35 pm

1 stop27h 25m

Washington, D.C. Dulles Intl

Mon 6/1

6:10 pm-10:35 pm

1 stop23h 25m

$592

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 6/15

8:55 am-3:35 pm

1 stop11h 40m

Washington, D.C. Dulles Intl

Mon 6/29

12:29 pm-9:15 am

1 stop15h 46m

$592

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Wed 10/21

8:30 pm-7:40 pm

1 stop28h 10m

Baltimore/Washington

Wed 11/4

8:35 pm-7:45 pm

1 stop18h 10m

$596

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Tue 6/23

1:25 pm-11:21 pm

2 stops14h 56m

Washington, D.C. Reagan-National

Sun 6/28

11:00 am-9:15 am

1 stop17h 15m

$597

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Wed 6/24

1:25 pm-11:21 pm

2 stops14h 56m

Washington, D.C. Reagan-National

Mon 6/29

2:45 pm-10:00 am

2 stops14h 15m

$597

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Tue 6/23

8:55 am-10:24 pm

2 stops18h 29m

Baltimore/Washington

Tue 6/30

6:17 am-10:45 am

1 stop23h 28m

$597

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/7

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Ireland to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Ireland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ireland to Washington, D.C.

How far ahead should I book a flight from Ireland to Washington, D.C.?

The price you pay for your flight from Ireland to Washington, D.C. may vary depending on when you book. For the best chance of a lower fare, look to book 63 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 Ireland to Washington, D.C.?

Currently, September is the cheapest month in which you can book a flight from Ireland to Washington, D.C. (average of $181). Flying from Ireland to Washington, D.C. in April is currently the most expensive (average of $472). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IE to WAS?

Find hourly flight availability from Ireland to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 11, 2026.

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

Weekly flight availability from Ireland to Washington, D.C.

Explore weekly flight availability from Ireland to Washington, D.C.. 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 May 11, 2026.

The most flights from IE0 to WAS are scheduled on a Thursday (15 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 Ireland to Washington, D.C. delayed?

About 15% of weekly flights between Ireland and Washington, D.C. have experienced delays in the past year, with the average delay time being 155 minutes.

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

Historically, flights departing at night 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 Ireland to Washington, D.C. flights?

Over the last year, Aer Lingus have had the lowest number of delays on this route, with just 14% of flights being delayed.

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated May 11, 2026.
See what other customers who have flown with United Airlines and Aer Lingus from Ireland to Washington, D.C. have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,700 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,700 reviews
United Airlines
7.4
Good
9,700 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
Aer Lingus
7.3
Good
1,551 reviews
United Airlines
7.4
Good
9,700 reviews

Food

6.6

Crew

8.1

Comfort

7.3

Overall

7.4

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

Related info for your journey

Find useful and relevant information for your journey from Ireland to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ireland to Washington, D.C.?

    JetBlue, Delta, and KLM can get you from Ireland to Washington, D.C. in just under 14h 40m. Your travel time can differ by up to 1h 49m. There are 3393 mi between Ireland and Washington, D.C.. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Ireland to Washington, D.C. one-way?

    $335 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on Aer Lingus and American Airlines, with prices starting from $461 and $494, respectively.

  • What are the most popular routes from Ireland to Washington, D.C.?

    When deciding which route to take from Ireland to Washington, D.C. consider Dublin - Washington, D.C. Dulles Intl, Dublin - Baltimore/Washington or Dublin - Washington, D.C. Reagan-National as they are the most popular.

  • What are the most reliable airlines from Ireland to Washington, D.C.?

    Consider SWISS (90%), Air Canada (81%) or United Airlines (81%) when booking your flight. These represent the most reliable airlines when flying from Ireland to Washington, D.C..

  • What are the cheapest flights from Ireland to Washington, D.C.?

    On average you can expect to pay $809 for a flight from Ireland to Washington, D.C.. The cheapest flight overall is $568 while the most popular route, (Dublin - Washington, D.C. Dulles Intl) is currently priced at $570.

  • Can I find deals for flights from Ireland to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Ireland to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ireland to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to Washington, D.C..

  • Can I find deals for business class flights from Ireland to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Ireland to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ireland to Washington, D.C.?

    Currently, September is the cheapest month in which you can book a flight from Ireland to Washington, D.C. (average of $181). Flying from Ireland to Washington, D.C. in April is currently the most expensive (average of $472). 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.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Tysons
Owings Mills
Springfield
Arlington
Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Silver Spring
Hanover
Laurel
Woodbridge
Waldorf
Largo
Clinton
Hunt Valley
Cordova
Reston

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 3 airlines flying from Ireland to Washington, D.C.

Discover the top 3 airlines that operate flights from Ireland to Washington, D.C.. 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 May 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$452Average$467FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$455Average$668FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$684Average$874FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.