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Cheap flights from Ireland to Washington, D.C. from £274

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 29/7. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — WAS
25 Jun — 2 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap 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 26 May 2026.

Tue 3/1111:30
DUB
-
BWI
1 stop12h 10m
Icelandair
Thu 12/1119:40
BWI
-
DUB
1 stop9h 35m
Icelandair
Deal found 24/5£416
Tue 23/611:10
DUB
-
BWI
2 stops16h 14m
Delta
Tue 30/618:21
BWI
-
DUB
1 stop11h 24m
Delta
Deal found 24/5£438
Mon 22/611:10
DUB
-
BWI
2 stops16h 14m
Delta
Mon 29/609:00
BWI
-
DUB
2 stops18h 20m
Delta
Deal found 23/5£440
Tue 23/615:00
DUB
-
BWI
1 stop12h 24m
Delta
Sun 28/617:32
BWI
-
DUB
1 stop11h 28m
Delta
Deal found 25/5£446
Fri 29/510:00
DUB
-
BWI
1 stop11h 38m
Delta
Sat 6/617:26
BWI
-
DUB
1 stop11h 34m
Delta
Deal found 22/5£446
Wed 24/620:30
DUB
-
BWI
1 stop28h 10m
British Airways
Mon 29/621:30
BWI
-
DUB
1 stop31h 10m
British Airways
Deal found 26/5£447
Sat 20/610:00
DUB
-
BWI
1 stop18h 18m
Delta
Sat 27/606:08
BWI
-
DUB
2 stops20h 47m
Delta
Deal found 23/5£448
Wed 10/611:30
DUB
-
DCA
1 stop16h 29m
JetBlue
Sun 14/611:00
DCA
-
DUB
1 stop16h 20m
JetBlue
Deal found 24/5£449
Wed 1/712:35
DUB
-
IAD
Nonstop8h 10m
Aer Lingus
Wed 8/721:00
IAD
-
DUB
Nonstop6h 55m
Aer Lingus
Deal found 25/5£449
Sat 19/919:05
DUB
-
IAD
1 stop26h 55m
Scandinavian Airlines
Sat 10/1020:20
IAD
-
DUB
2 stops33h 05m
Scandinavian Airlines
Deal found 25/5£451
Wed 29/709:30
DUB
-
DCA
1 stop19h 29m
Finnair
Fri 21/817:22
DCA
-
DUB
1 stop13h 28m
Finnair
Deal found 23/5£452
Tue 28/714:15
DUB
-
IAD
1 stop10h 05m
Icelandair
Sat 22/820:30
IAD
-
DUB
1 stop9h 35m
Icelandair
Deal found 22/5£452

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 26 May 2026.

Round-trip from

£416

One-way from

£274

Popular in

March

Cheapest in

September

Average price

£546

Good round-trip deal

£549 or less
Icelandair
  • Icelandair
  • 5/11-15/11
  • 2 total stops
  • 21h 45m total
  • Ireland to Washington, D.C.
Search Deals
JetBlue
  • JetBlue
  • 29/7
  • 1 total stop
  • 12h 16m total
  • Ireland to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (£1 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return 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

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 26 May 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 return flight

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Tue 28/7

08:35-21:15

2 stops17h 40m

Washington, D.C. Reagan-National

Mon 24/8

18:23-12:00

2 stops12h 37m

£449

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Wed 29/7

09:30-23:59

1 stop19h 29m

Washington, D.C. Reagan-National

Fri 21/8

17:22-11:50

1 stop13h 28m

£453

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Tue 23/6

13:25-23:21

2 stops14h 56m

Washington, D.C. Reagan-National

Sun 28/6

16:00-08:45

1 stop11h 45m

£466

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Wed 24/6

13:25-23:21

2 stops14h 56m

Washington, D.C. Reagan-National

Mon 29/6

13:42-08:45

1 stop14h 03m

£466

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 24/6

08:55-18:32

2 stops14h 37m

Washington, D.C. Dulles Intl

Mon 29/6

11:05-10:00

1 stop17h 55m

£466

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Tue 28/7

08:35-21:15

2 stops17h 40m

Washington, D.C. Reagan-National

Thu 20/8

13:59-09:40

2 stops14h 41m

£466

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Tue 25/8

10:40-19:56

1 stop14h 16m

Washington, D.C. Reagan-National

Tue 22/9

17:15-08:20

1 stop10h 05m

£472

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Tue 20/10

14:15-22:15

1 stop13h 00m

Baltimore/Washington

Tue 3/11

19:40-10:15

1 stop9h 35m

£496

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Tue 20/10

14:15-22:15

1 stop13h 00m

Baltimore/Washington

Tue 10/11

19:40-10:15

1 stop9h 35m

£496
Fastest return journey

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 20/10

14:15-19:20

1 stop10h 05m

Washington, D.C. Dulles Intl

Tue 10/11

19:40-10:15

1 stop9h 35m

£496

Flights are sorted by cheapest return flights first.

Deals found on 22/5

Showing 1-10 of 50 resultsSorted by cheapest first
1
2
3
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5

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, September is the cheapest month in which you can book a flight from Ireland to Washington, D.C. (average of £134). Flying from Ireland to Washington, D.C. in June is currently the most expensive (average of £385). 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 26 May 2026.

When flying from Ireland to Washington, D.C., the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 26 May 2026.

The most flights from IE0 to WAS are scheduled on a Monday (14 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (9 on average).

How often are flights from Ireland to Washington, D.C. delayed?

About 14% 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 past year, Aer Lingus have had the lowest number of delays on this route, with just 13% of flights being delayed.

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

To ensure you get the cheapest price possible for a flight from Ireland to Washington, D.C., you should look to book at least 80 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 26 May 2026.
Read reviews from past customers who have flown with United Airlines and Aer Lingus 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
9,750 reviews
Check prices

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,750 reviews
United Airlines
7.4
Good
9,750 reviews
Check prices

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Aer Lingus
7.3
Good
1,586 reviews
United Airlines
7.4
Good
9,750 reviews
Check prices

Boarding

7.7

Overall

7.4

Crew

8.1

Entertainment

7.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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 14h 56m. Fly via British Airways, Finnair, or Delta to get the fastest option. Ireland and Washington, D.C. are separated by a distance of 3381 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    While some choose either Dublin - Baltimore/Washington or Dublin - Washington, D.C. Reagan-National, Dublin - Washington, D.C. Dulles Intl 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: SWISS (89%), Lufthansa (87%), Air Canada (86%).

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

    On average you can expect to pay £684 for a flight from Ireland to Washington, D.C.. The cheapest flight overall is £427 while the most popular route, (Dublin - Washington, D.C. Dulles Intl) is currently priced at £454.

  • 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, September is the cheapest month in which you can book a flight from Ireland to Washington, D.C. (average of £134). Flying from Ireland to Washington, D.C. in June is currently the most expensive (average of £385). 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
Gaithersburg
Woodbridge
Arlington
Alexandria

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 5 airlines flying from Ireland to Washington, D.C.

Discover the top 5 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 26 May 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£294Average£413FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£322Average£417FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£334Average£596FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£339Average£445FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
IcelandairCheapest£370Average£472FlexibilityNo cancel feeOn-time76%
Search Icelandair 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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