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Washington, D.C.

$353+ 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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — WAS
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
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 October 30, 2025.

This Iberia deal was found by Cheapflights users on 10/28. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/111:10 pmDUB - IAD
1 stop11h 45mMultiple Airlines
Thu 1/86:20 pmIAD - DUB
1 stop10h 30mMultiple Airlines
Deal found 10/28$429
This FlightHub deal was found by Cheapflights users on 10/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2612:30 pmDUB - IAD
1 stop33h 45mScandinavian Airlines
Thu 2/268:30 pmIAD - DUB
1 stop31h 55mScandinavian Airlines
Deal found 10/29$430
This American Airlines deal was found by Cheapflights users on 10/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/63:55 pmDUB - IAD
2 stops36h 12mAmerican Airlines
Fri 11/149:45 pmIAD - DUB
1 stop31h 05mAmerican Airlines
Deal found 10/28$432
This American Airlines deal was found by Cheapflights users on 10/27. 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.
Fri 12/512:55 pmDUB - IAD
1 stop26h 50mAmerican Airlines
Mon 12/89:45 pmIAD - DUB
1 stop14h 20mAmerican Airlines
Deal found 10/27$435
This Booking.com deal was found by Cheapflights users on 10/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1611:30 amDUB - IAD
1 stop12h 00mIcelandair
Wed 1/77:40 pmIAD - DUB
1 stop9h 35mIcelandair
Deal found 10/28$436
This Booking.com deal was found by Cheapflights users on 10/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/194:20 pmDUB - IAD
Nonstop8h 10mAer Lingus
Wed 1/75:05 pmIAD - DUB
Nonstop6h 50mAer Lingus
Deal found 10/28$444
This Booking.com deal was found by Cheapflights users on 10/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/44:15 pmDUB - IAD
Nonstop8h 10mAer Lingus
Tue 11/115:05 pmIAD - DUB
Nonstop6h 50mAer Lingus
Deal found 10/28$446
This Aer Lingus deal was found by Cheapflights users on 10/28. 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 Aer Lingus is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/512:15 pmDUB - IAD
Nonstop8h 20mAer Lingus
Mon 12/85:05 pmIAD - DUB
Nonstop6h 50mAer Lingus
Deal found 10/28$447
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/74:20 pmDUB - IAD
Nonstop8h 10mAer Lingus
Thu 11/139:00 pmIAD - DUB
Nonstop6h 50mAer Lingus
Deal found 10/28$449
This American Airlines deal was found by Cheapflights users on 10/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1310:30 amDUB - DCA
2 stops16h 00mAmerican Airlines
Mon 11/174:51 pmDCA - DUB
1 stop10h 49mAmerican Airlines
Deal found 10/28$451
This British Airways deal was found by Cheapflights users on 10/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/268:50 amDUB - IAD
1 stop11h 45mBritish Airways
Tue 2/249:45 pmIAD - DUB
1 stop11h 35mBritish Airways
Deal found 10/28$451
This British Airways deal was found by Cheapflights users on 10/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/161:25 pmDUB - IAD
1 stop11h 30mBritish Airways
Wed 1/79:45 pmIAD - DUB
1 stop11h 20mBritish Airways
Deal found 10/28$452

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 October 30, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$430
(FlightHub)

One-way from

$353
(Mytrip)

Popular in

August

Cheapest in

January

Average price

$604

Good round-trip deal

$552 or less

Good one-way deal

$526 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. 12% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 30, 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

Wed 2/11

1:10 pm-7:55 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Wed 2/18

6:20 pm-9:40 am

1 stop10h 20m

$429

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 12/5

12:55 pm-10:59 pm

1 stop15h 04m

Washington, D.C. Dulles Intl

Mon 12/8

7:59 am-12:35 pm

2 stops23h 36m

$435

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 12/5

11:30 am-6:30 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Mon 12/8

7:40 pm-10:15 am

1 stop9h 35m

$446

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 12/5

12:15 pm-3:35 pm

Nonstop8h 20m

Washington, D.C. Dulles Intl

Mon 12/8

5:05 pm-4:55 am

Nonstop6h 50m

$447

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 11/26

8:50 am-3:35 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Thu 2/26

6:20 pm-9:50 am

1 stop10h 30m

$451

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Sat 2/21

11:30 am-7:44 pm

1 stop13h 14m

Washington, D.C. Reagan-National

Tue 3/10

4:12 pm-8:40 am

1 stop12h 28m

$453

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Thu 11/13

11:30 am-8:58 pm

1 stop14h 28m

Washington, D.C. Reagan-National

Mon 11/17

1:44 pm-8:40 am

1 stop13h 56m

$453

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Fri 12/5

11:30 am-8:58 pm

1 stop14h 28m

Washington, D.C. Reagan-National

Mon 12/8

1:41 pm-8:40 am

1 stop13h 59m

$453

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Fri 12/5

11:30 am-8:58 pm

1 stop14h 28m

Washington, D.C. Reagan-National

Mon 12/8

4:49 pm-8:40 am

1 stop10h 51m

$453

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Sun 11/16

11:30 am-8:58 pm

1 stop14h 28m

Washington, D.C. Reagan-National

Sun 12/14

4:43 pm-8:40 am

1 stop10h 57m

$453

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

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 October 30, 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.

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 October 30, 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
8,998 reviews

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

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
8,998 reviews
United Airlines
7.4
Good
8,998 reviews

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

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
1,363 reviews
United Airlines
7.4
Good
8,998 reviews

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

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.?

    British Airways, American Airlines, and Icelandair can get you from Ireland to Washington, D.C. in just under 11h 45m. Your travel time can differ by up to 3h 19m. 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?

    $402 is the cheapest one-way deal found within the past few days, from Scandinavian Airlines. You may also be able to find cheap deals on Icelandair and British Airways, with prices starting from $431 and $460, 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 (84%), United Airlines (84%) or Lufthansa (84%) 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 $1,030 for a flight from Ireland to Washington, D.C.. The cheapest flight overall is $454 while the most popular route, (Dublin - Washington, D.C. Dulles Intl) is currently priced at $399.

  • 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
Woodbridge
Tysons
Arlington
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Owings Mills
Linthicum Heights
Manassas
Largo
Oxon Hill
Laurel
Towson
National Harbor
Waldorf
Bowie

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.
Heathrow to Dulles Intl flights
Charles de Gaulle to Dulles Intl flights
Frankfurt to Dulles Intl flights
Orly to Dulles Intl flights
Bruxelles-National to Dulles Intl flights
Charles de Gaulle to Reagan-National flights
Heathrow to Reagan-National flights
Gatwick to Dulles Intl flights
Frankfurt to Reagan-National flights
Amsterdam to Dulles Intl flights
London City to Dulles Intl flights
Gatwick to Reagan-National flights
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Stansted to Dulles Intl flights
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Leonardo da Vinci/Fiumicino to Dulles Intl flights
Munich to Dulles Intl flights
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Dublin to Dulles Intl flights
Istanbul to Dulles Intl flights
Frederic Chopin to Dulles Intl flights
Zurich to Dulles Intl flights
Madrid to Reagan-National flights
Amsterdam to Reagan-National flights
Vienna to Reagan-National flights
Geneva to Dulles Intl flights
Athens to Dulles Intl flights
Barcelona-El Prat to Reagan-National flights
Lisbon to Dulles Intl flights
Bruxelles-National to Reagan-National flights
London City to Reagan-National flights
Athens to Reagan-National flights
Leonardo da Vinci/Fiumicino to Reagan-National flights
Berlin to Dulles Intl flights
Munich to Reagan-National flights
Vicenza to Reagan-National flights
Frederic Chopin to Reagan-National flights
Malpensa to Dulles Intl flights
Vicenza to Dulles Intl flights
Budapest to Dulles Intl flights
Berlin to Reagan-National flights
Edinburgh to Dulles Intl flights
Istanbul to Reagan-National flights
Copenhagen to Dulles Intl flights
Duesseldorf Intl to Dulles Intl flights
Dublin 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 October 30, 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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