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Washington, D.C.

$391+ 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 1/19. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — WAS
Dec 18 — Dec 251
Thu 12/18
Thu 12/25
1 adult, Economy
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Find 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 November 18, 2025.

This Mytrip deal was found by Cheapflights users on 11/17. 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 12/1111:30 amDUB - IAD
1 stop12h 00mIcelandair
Sun 12/147:40 pmIAD - DUB
1 stop9h 35mIcelandair
Deal found 11/17$417
This Mytrip deal was found by Cheapflights users on 11/18. 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.
Wed 12/311:30 amDUB - BWI
1 stop12h 10mIcelandair
Tue 12/97:40 pmBWI - DUB
1 stop9h 35mIcelandair
Deal found 11/18$466
This Icelandair deal was found by Cheapflights users on 11/17. 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 12/1111:30 amDUB - IAD
1 stop12h 00mIcelandair
Thu 1/87:40 pmIAD - DUB
1 stop9h 35mIcelandair
Deal found 11/17$467
This American Airlines deal was found by Cheapflights users on 11/16. 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.
Sun 11/2311:30 amDUB - IAD
2 stops17h 29mAmerican Airlines
Mon 12/11:58 pmIAD - DUB
2 stops17h 37mAmerican Airlines
Deal found 11/16$468
This lastminute.com deal was found by Cheapflights users on 11/18. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/212:15 pmDUB - IAD
Nonstop8h 20mAer Lingus
Thu 12/115:05 pmIAD - DUB
Nonstop6h 50mAer Lingus
Deal found 11/18$473
This Rumbo deal was found by Cheapflights users on 11/16. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/234:20 pmDUB - IAD
Nonstop8h 10mAer Lingus
Sun 11/309:00 pmIAD - DUB
Nonstop6h 50mAer Lingus
Deal found 11/16$476
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2712:15 pmDUB - IAD
Nonstop8h 20mAer Lingus
Fri 12/59:00 pmIAD - DUB
Nonstop6h 50mAer Lingus
Deal found 11/18$480
This Kiwi.com deal was found by Cheapflights users on 11/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/244:20 pmDUB - IAD
Nonstop8h 10mAer Lingus
Mon 12/19:00 pmIAD - DUB
Nonstop6h 50mAer Lingus
Deal found 11/17$481
This FlightHub deal was found by Cheapflights users on 11/16. 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.
Wed 11/2612:15 pmDUB - IAD
Nonstop8h 20mAer Lingus
Thu 2/265:05 pmIAD - DUB
Nonstop6h 50mAer Lingus
Deal found 11/16$484
This Finnair deal was found by Cheapflights users on 11/18. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/211:30 amDUB - DCA
1 stop14h 28mMultiple Airlines
Thu 12/114:44 pmDCA - DUB
1 stop10h 56mMultiple Airlines
Deal found 11/18$486
This Delta deal was found by Cheapflights users on 11/18. 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 11/265:55 amDUB - IAD
1 stop15h 10mDelta
Thu 2/266:50 pmIAD - DUB
1 stop15h 55mDelta
Deal found 11/18$486
This Finnair deal was found by Cheapflights users on 11/16. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/2311:30 amDUB - DCA
1 stop14h 28mMultiple Airlines
Sun 11/304:46 pmDCA - DUB
1 stop10h 54mMultiple Airlines
Deal found 11/16$487

Cheap 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 November 18, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$405
(Justfly.com)

One-way from

$391
(Kiwi.com)

Popular in

August

Cheapest in

January

Average price

$542

Good round-trip deal

$549 or less

Good one-way deal

$539 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. 13% potential increase in price ($88 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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 November 18, 2025.
Use the filters below to find and compare flights from Ireland to Washington, D.C. that are best for you.

Fly from

Ireland

Fly to

Washington, D.C.

Route

Depart

Return

Price

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 2/26

11:30 am-6:30 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Wed 3/4

7:40 pm-10:15 am

1 stop9h 35m

$426

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 1/16

11:30 am-6:30 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Tue 1/20

7:40 pm-10:15 am

1 stop9h 35m

$426

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sat 2/28

11:30 am-6:30 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Tue 3/3

7:40 pm-10:15 am

1 stop9h 35m

$427

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 2/24

11:30 am-6:30 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Wed 3/4

7:40 pm-10:15 am

1 stop9h 35m

$427

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sat 2/28

10:10 am-6:50 pm

1 stop13h 40m

Washington, D.C. Dulles Intl

Mon 3/2

8:30 pm-6:20 pm

1 stop16h 50m

$453

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 2/24

11:30 am-6:30 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Thu 3/5

7:40 pm-10:15 am

1 stop9h 35m

$456

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 2/26

11:30 am-6:30 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Thu 3/5

7:40 pm-10:15 am

1 stop9h 35m

$457

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sat 2/28

11:30 am-6:30 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Thu 3/5

7:40 pm-10:15 am

1 stop9h 35m

$457

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Sat 2/28

8:55 am-6:45 pm

1 stop14h 50m

Baltimore/Washington

Sun 3/1

8:35 pm-3:05 pm

1 stop13h 30m

$461

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Wed 3/4

8:40 pm-6:45 pm

1 stop27h 05m

Baltimore/Washington

Wed 3/11

9:35 pm-7:55 am

1 stop30h 20m

$462

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/17

Showing 1-10 of 60 results
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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, February is the cheapest month in which you can book a flight from Ireland to Washington, D.C. (average of $284). Flying from Ireland to Washington, D.C. in June is currently the most expensive (average of $509). 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 November 18, 2025.

When flying from Ireland to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 18% versus a flight in the morning.

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 November 18, 2025.

The most flights from IE0 to WAS are scheduled on a Monday (12 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (12 on average).

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 November 18, 2025.
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
9,019 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,019 reviews
United Airlines
7.4
Good
9,019 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Aer Lingus
7.2
Good
1,373 reviews
United Airlines
7.4
Good
9,019 reviews

Comfort

7.3

Entertainment

7.1

Overall

7.4

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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.?

    Icelandair, Scandinavian Airlines, and British Airways can get you from Ireland to Washington, D.C. in just under 12h. Your travel time can differ by up to 2h 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?

    $446 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 WestJet, with prices starting from $454 and $488, 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 Air Canada (90%), United Airlines (90%) or Lufthansa (88%) 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 $1,013 for a flight from Ireland to Washington, D.C.. The cheapest flight overall is $446 while the most popular route, (Dublin - Washington, D.C. Dulles Intl) is currently priced at $417.

  • 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, February is the cheapest month in which you can book a flight from Ireland to Washington, D.C. (average of $284). Flying from Ireland to Washington, D.C. in June is currently the most expensive (average of $509). 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
Woodbridge
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Linthicum Heights
Manassas
Laurel
Towson
National Harbor
Waldorf
Bowie
Largo
McLean

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ireland to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Charles de Gaulle to Dulles Intl flights
Frankfurt to Dulles Intl flights
Heathrow to Dulles Intl flights
Madrid to Dulles Intl flights
Charles de Gaulle to Reagan-National flights
Gatwick to Dulles Intl flights
Heathrow to Reagan-National flights
Orly to Dulles Intl flights
Bruxelles-National to Dulles Intl flights
Madrid to Reagan-National flights
Gatwick to Reagan-National flights
London City to Dulles Intl flights
Stansted to Dulles Intl flights
Istanbul to Dulles Intl flights
Barcelona-El Prat to Dulles Intl flights
Frederic Chopin to Dulles Intl flights
Zurich to Dulles Intl flights
Luton to Dulles Intl flights
Munich to Dulles Intl flights
Frankfurt to Reagan-National flights
Leonardo da Vinci/Fiumicino to Dulles Intl flights
Amsterdam to Dulles Intl flights
Vienna to Dulles Intl flights
Geneva to Dulles Intl flights
Lisbon to Dulles Intl flights
Frederic Chopin to Reagan-National flights
Bruxelles-National to Reagan-National flights
Barcelona-El Prat to Reagan-National flights
Dublin to Dulles Intl flights
Athens to Dulles Intl flights
Istanbul to Reagan-National flights
Manchester to Dulles Intl flights
Malpensa to Dulles Intl flights
Berlin to Dulles Intl flights
Copenhagen to Dulles Intl flights
Sabiha Gokcen to Dulles Intl flights
Zurich to Reagan-National flights
Geneva to Reagan-National flights
Leonardo da Vinci/Fiumicino to Reagan-National flights
Vicenza to Reagan-National flights
Vicenza to Dulles Intl flights
Duesseldorf Intl to Dulles Intl flights
Amsterdam to Reagan-National flights
Berlin to Reagan-National flights
Munich to Reagan-National flights
Marseille to Dulles Intl flights
Lisbon to Reagan-National flights

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 November 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$425Average$608FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$454Average$598FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$643Average$808FlexibilityNo cancel feeOn-time69%

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