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Cheap flights from Ireland to Washington, D.C. from £338

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — WAS
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

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 31 October 2025.

Round-trip from

£338

Popular in

August

Cheapest in

January

Average price

£458

Good round-trip deal

£530 or less

Good one-way deal

£526 or less
Icelandair
  • Icelandair
  • 5/12-8/12
  • 2 total stops
  • 21h 35m total
  • Ireland to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£47 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£11 potential savings vs. average return 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).
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Price to beat on a one-way flight from Ireland to Washington, D.C. (WAS).
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Find flight deals from Ireland to Washington, D.C.

Enter your travel dates to find the best prices.

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 31 October 2025.

Fri 5/1211:30DUB - IAD
1 stop12h 00mIcelandair
Mon 8/1219:40IAD - DUB
1 stop9h 35mIcelandair
Deal found 30/10£338
Wed 26/1111:30DUB - BWI
1 stop12h 10mIcelandair
Wed 3/1219:40BWI - DUB
1 stop9h 35mIcelandair
Deal found 29/10£354
Thu 11/1211:30DUB - IAD
1 stop12h 00mIcelandair
Thu 8/119:40IAD - DUB
1 stop9h 35mIcelandair
Deal found 29/10£355
Fri 7/1105:55DUB - IAD
1 stop15h 10mDelta
Thu 13/1112:11IAD - DUB
2 stops14h 49mDelta
Deal found 30/10£356
Thu 6/1108:50DUB - IAD
1 stop12h 15mDelta
Sat 15/1112:11IAD - DUB
2 stops14h 49mDelta
Deal found 30/10£357
Thu 6/1108:50DUB - IAD
1 stop12h 15mMultiple Airlines
Thu 13/1121:25IAD - DUB
1 stop13h 20mMultiple Airlines
Deal found 29/10£357
Tue 11/1108:50DUB - IAD
1 stop12h 15mKLM
Sun 16/1115:35IAD - DUB
1 stop11h 10mKLM
Deal found 30/10£358
Fri 21/1108:50DUB - IAD
1 stop12h 15mDelta
Tue 2/1212:19IAD - DUB
1 stop15h 26mDelta
Deal found 30/10£359
Mon 24/1105:55DUB - IAD
1 stop15h 10mDelta
Sun 30/1107:01IAD - DUB
1 stop19h 44mDelta
Deal found 29/10£360
Wed 26/1108:50DUB - IAD
1 stop12h 15mKLM
Wed 3/1218:05IAD - DUB
1 stop13h 35mKLM
Deal found 29/10£360
Fri 7/1108:50DUB - DCA
2 stops19h 12mDelta
Sun 23/1111:10DCA - DUB
2 stops15h 50mDelta
Deal found 29/10£362
Thu 6/1105:55DUB - DCA
2 stops17h 05mDelta
Thu 13/1112:39DCA - DUB
2 stops14h 21mDelta
Deal found 30/10£363

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 31 October 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

Fri 5/12

11:30-18:30

1 stop12h 00m

Washington, D.C. Dulles Intl

Mon 8/12

19:40-10:15

1 stop9h 35m

£338

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Wed 26/11

11:30-18:40

1 stop12h 10m

Baltimore/Washington

Wed 3/12

19:40-10:15

1 stop9h 35m

£354

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 25/3

05:55-17:05

1 stop15h 10m

Washington, D.C. Dulles Intl

Wed 15/4

21:20-15:00

1 stop12h 40m

£356

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 26/11

05:55-16:05

1 stop15h 10m

Washington, D.C. Dulles Intl

Tue 24/2

12:30-07:50

2 stops14h 20m

£357

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 11/12

05:55-16:05

1 stop15h 10m

Washington, D.C. Dulles Intl

Thu 8/1

12:23-15:45

2 stops22h 22m

£357

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 21/11

05:55-16:05

1 stop15h 10m

Washington, D.C. Dulles Intl

Tue 2/12

12:19-08:00

2 stops14h 41m

£357

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 11/11

08:50-16:05

1 stop12h 15m

Washington, D.C. Dulles Intl

Mon 17/11

19:49-15:45

2 stops14h 56m

£357

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 11/11

08:50-16:05

1 stop12h 15m

Washington, D.C. Dulles Intl

Sun 16/11

15:35-07:45

1 stop11h 10m

£358

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Wed 11/2

05:55-17:53

2 stops16h 58m

Washington, D.C. Reagan-National

Wed 18/2

11:00-07:50

2 stops15h 50m

£361

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Wed 25/3

13:25-23:33

2 stops14h 08m

Washington, D.C. Reagan-National

Wed 15/4

17:00-09:15

1 stop11h 15m

£362

Flights are sorted by cheapest return flights first.

Deals found on 30/10

Showing 1-10 of 55 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 return 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 £216). Flying from Ireland to Washington, D.C. in June is currently the most expensive (average of £386). 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 31 October 2025.

It’s optimal to fly from Ireland to Washington, D.C. in the evening. By choosing this option you can save up to 34% on the cost of your flight, compared to 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 31 October 2025.
Read reviews from past customers who have flown with United Airlines, Aer Lingus, andIcelandair from Ireland to Washington, D.C.. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,999 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.6

Overall

7.4

Entertainment

7.1

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
8,999 reviews
United Airlines
7.4
Good
8,999 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.6

Overall

7.4

Entertainment

7.1

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
1,365 reviews
United Airlines
7.4
Good
8,999 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.6

Overall

7.4

Entertainment

7.1

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
Icelandair
7.1
Good
562 reviews
United Airlines
7.4
Good
8,999 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.6

Overall

7.4

Entertainment

7.1

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
PLAY
7.0
Good
United Airlines
7.4
Good
8,999 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.6

Overall

7.4

Entertainment

7.1

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
Lufthansa
6.8
Okay
7,542 reviews
United Airlines
7.4
Good
8,999 reviews
Check prices

Comfort

7.3

Boarding

7.7

Food

6.6

Overall

7.4

Entertainment

7.1

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.?

    There are many flights that can get you from Ireland to Washington, D.C. in 12h. Fly via Icelandair, Delta, or KLM to get the fastest option. Ireland and Washington, D.C. are separated by a distance of 3393 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    £381 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on Iberia and Delta, with prices starting from £429 and £546, respectively.

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

    While some choose either Dublin - Washington, D.C. Dulles Intl or Dublin - Baltimore/Washington, Dublin - Washington, D.C. Reagan-National is the most popular route from Ireland to Washington, D.C..

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Ireland to Washington, D.C. on time: Air Canada (84%), United Airlines (84%), Lufthansa (84%).

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

    On average you can expect to pay £584 for a flight from Ireland to Washington, D.C.. The cheapest flight overall is £388 while the most popular route, (Dublin - Washington, D.C. Reagan-National) is currently priced at £364.

  • 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 holiday 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 £216). Flying from Ireland to Washington, D.C. in June is currently the most expensive (average of £386). 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

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Woodbridge
Arlington
Alexandria
College Park
Tysons

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
Gatwick to Dulles Intl flights
Heathrow to Reagan-National flights
London City to Dulles Intl flights
Stansted to Dulles Intl flights
Gatwick to Reagan-National flights
Luton to Dulles Intl flights
London City to Reagan-National flights
Manchester to Dulles Intl flights
Edinburgh to Dulles Intl flights
Manchester to Reagan-National flights
Edinburgh to Reagan-National flights
Glasgow Intl to Dulles Intl flights
Birmingham to Dulles Intl flights
Glasgow Intl to Reagan-National flights
Belfast Intl to Dulles Intl flights
Leeds to Dulles Intl flights
Birmingham to Reagan-National flights
Newcastle upon Tyne to Dulles Intl flights
Southampton to Dulles Intl flights
Southend to Dulles Intl flights
Belfast City to Reagan-National flights
Bristol to Dulles Intl flights
Newcastle upon Tyne to Reagan-National flights
Istanbul to Dulles Intl flights
Aberdeen to Reagan-National flights
Southampton to Reagan-National flights
Leeds to Reagan-National flights
Dublin to Dulles Intl flights
Aberdeen to Dulles Intl flights
Inverness to Dulles Intl flights
Bruxelles-National to Dulles Intl flights
Frankfurt to Dulles Intl flights
Cardiff to Dulles Intl flights
Grimsby to Dulles Intl flights
Norwich to Reagan-National flights
Bristol to Reagan-National flights
Cardiff to Reagan-National flights
Exeter to Dulles Intl flights
Amsterdam to Dulles Intl flights
Madrid to Dulles Intl flights

Top 6 airlines flying from Ireland to Washington, D.C.

Discover the top 6 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 858,174 searches. Data last updated 31 October 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest£222Average£336FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
LufthansaCheapest£301Average£449FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
IcelandairCheapest£315Average£384FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£316Average£522FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£340Average£547FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£340Average£451FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ireland to Washington, D.C.?

Cheapflights helps you search for flights from Ireland to Washington, D.C. via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Ireland to Washington, D.C.?

Cheapflights simply makes it quick and affordable to book flights from Ireland to Washington, D.C. by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Ireland to Washington, D.C. with no change fees?

Certainly. Search results for flights to Washington, D.C. from Ireland shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Ireland to Washington, D.C. become cheaper?

Of course! You can now track prices for flights from Ireland to Washington, D.C. and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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