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Washington, D.C.

$364+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — WAS
Jul 30 — Aug 61
Thu 7/30
Thu 8/6
1 adult, Economy
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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 June 30, 2026.

This British Airways deal was found by Cheapflights users on 6/27. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/310:30 am
DUB
-
BWI
1 stop13h 15m
British Airways
Mon 12/78:35 pm
BWI
-
DUB
1 stop11h 00m
British Airways
Deal found 6/27$565
This TravelUp deal was found by Cheapflights users on 6/27. 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.
Tue 12/811:30 am
DUB
-
BWI
2 stops15h 42m
Multiple Airlines
Sun 12/138:35 pm
BWI
-
DUB
1 stop12h 45m
Multiple Airlines
Deal found 6/27$575
This American Airlines deal was found by Cheapflights users on 6/27. 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.
Tue 12/811:30 am
DUB
-
BWI
2 stops15h 42m
American Airlines
Sun 12/136:15 am
BWI
-
DUB
2 stops21h 15m
American Airlines
Deal found 6/27$584
This British Airways deal was found by Cheapflights users on 6/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2012:50 pm
DUB
-
BWI
1 stop11h 50m
British Airways
Tue 11/108:35 pm
BWI
-
DUB
1 stop15h 25m
British Airways
Deal found 6/25$587
This Delta deal was found by Cheapflights users on 6/25. 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.
Tue 10/205:55 am
DUB
-
BWI
2 stops15h 53m
Delta
Tue 11/101:00 pm
BWI
-
DUB
2 stops15h 00m
Delta
Deal found 6/25$603
This British Airways deal was found by Cheapflights users on 6/25. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:30 am
DUB
-
BWI
1 stop11h 45m
British Airways
Tue 9/227:25 pm
BWI
-
DUB
1 stop11h 40m
British Airways
Deal found 6/25$604
This Delta deal was found by Cheapflights users on 6/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/21:25 pm
DUB
-
DCA
2 stops14h 34m
Delta
Wed 10/282:00 pm
DCA
-
DUB
2 stops13h 45m
Delta
Deal found 6/29$605
This Delta deal was found by Cheapflights users on 6/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/28:55 am
DUB
-
IAD
2 stops14h 38m
Delta
Wed 10/2812:31 pm
IAD
-
DUB
1 stop15h 14m
Delta
Deal found 6/29$605
This Delta deal was found by Cheapflights users on 6/28. 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.
Wed 9/21:25 pm
DUB
-
DCA
2 stops14h 34m
Delta
Fri 9/182:45 pm
DCA
-
DUB
2 stops14h 15m
Delta
Deal found 6/28$606
This Delta deal was found by Cheapflights users on 6/25. 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.
Tue 10/208:55 am
DUB
-
BWI
2 stops18h 15m
Delta
Tue 11/35:33 pm
BWI
-
DUB
1 stop11h 12m
Delta
Deal found 6/25$606
This Gotogate deal was found by Cheapflights users on 6/29. 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.
Fri 7/1012:35 pm
DUB
-
IAD
Nonstop8h 10m
Aer Lingus
Sun 7/198:55 pm
IAD
-
DUB
Nonstop7h 00m
Aer Lingus
Deal found 6/29$606
This SmartFares deal was found by Cheapflights users on 6/30. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/3111:30 am
DUB
-
DCA
1 stop16h 29m
JetBlue
Sat 8/86:10 am
DCA
-
DUB
1 stop21h 50m
JetBlue
Deal found 6/30$607

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 June 30, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$565
(British Airways)

One-way from

$364
(Kiwi.com)

Popular in

March

Cheapest in

February

Average price

$704

Good round-trip deal

$779 or less

Good one-way deal

$661 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 ($13 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 June 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 June 30, 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

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Tue 10/20

12:50 pm-7:40 pm

1 stop11h 50m

Baltimore/Washington

Tue 11/10

8:35 pm-5:00 pm

1 stop15h 25m

$587

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Wed 10/21

5:50 pm-7:40 pm

1 stop30h 50m

Baltimore/Washington

Wed 11/4

8:35 pm-5:00 pm

1 stop15h 25m

$587

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Wed 10/21

11:10 am-10:10 pm

2 stops16h 00m

Baltimore/Washington

Wed 11/4

1:00 pm-9:00 am

2 stops15h 00m

$603

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Wed 9/2

1:25 pm-10:59 pm

2 stops14h 34m

Washington, D.C. Reagan-National

Wed 10/28

2:00 pm-7:45 am

1 stop13h 45m

$605

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Wed 10/28

9:45 am-6:14 pm

1 stop12h 29m

Washington, D.C. Reagan-National

Sun 11/1

1:45 pm-7:45 am

1 stop13h 00m

$608
Quickest round-trip

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Tue 8/25

9:50 am-3:38 pm

1 stop10h 48m

Washington, D.C. Reagan-National

Tue 9/22

8:20 pm-11:10 am

1 stop9h 50m

$609

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 10/28

1:25 pm-9:11 am

2 stops23h 46m

Washington, D.C. Dulles Intl

Sun 11/1

1:00 pm-12:40 pm

2 stops18h 40m

$610

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 10/23

9:15 am-11:02 pm

2 stops18h 47m

Washington, D.C. Dulles Intl

Fri 11/6

10:05 am-7:45 am

1 stop16h 40m

$611

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Tue 8/25

1:25 pm-10:59 pm

2 stops14h 34m

Washington, D.C. Reagan-National

Tue 9/22

12:55 pm-10:45 am

1 stop16h 50m

$613

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Wed 8/26

1:25 pm-10:59 pm

2 stops14h 34m

Washington, D.C. Reagan-National

Mon 8/31

12:23 pm-10:00 am

1 stop16h 37m

$613

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Showing 1-10 of 60 resultsSorted by cheapest first
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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.

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 July is currently the most expensive (average of $573). 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 June 30, 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 June 30, 2026.

The most flights from IE0 to WAS are scheduled on a Monday (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 157 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.

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 53 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 June 30, 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
9,904 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,904 reviews
United Airlines
7.4
Good
9,904 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Aer Lingus
7.3
Good
1,632 reviews
United Airlines
7.4
Good
9,904 reviews

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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.?

    British Airways, Delta, and Aer Lingus can get you from Ireland to Washington, D.C. in just under 8h 10m. Your travel time can differ by up to 7h 50m. 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?

    $477 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on American Airlines and Lufthansa, with prices starting from $611 and $637, 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 Qatar Airways (90%), American Airlines (89%) or Aer Lingus (89%) 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 $1,078 for a flight from Ireland to Washington, D.C.. The cheapest flight overall is $569 while the most popular route, (Dublin - Washington, D.C. Dulles Intl) is currently priced at $508.

  • 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 July is currently the most expensive (average of $573). 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
Arlington
Tysons
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Hyattsville
Falls Church
Fredericksburg
Hanover
Manassas
Silver Spring
Laurel
Clinton
Hunt Valley
Cordova
Woodbridge

Browse thousands of different options on Cheapflights for your next trip

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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 June 30, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$452Average$467FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$455Average$683FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$684Average$874FlexibilityNo cancel feeOn-time69%

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