Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Ireland to Washington, D.C. from £340

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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — WAS
7 Aug — 14 Aug1
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 8 July 2026.

Wed 18/1111:30
DUB
-
BWI
1 stop12h 10m
Icelandair
Sat 28/1119:40
BWI
-
DUB
1 stop9h 35m
Icelandair
Deal found 8/7£387
Wed 18/1110:20
DUB
-
BWI
1 stop13h 25m
British Airways
Sun 29/1120:35
BWI
-
DUB
1 stop10h 40m
British Airways
Deal found 8/7£424
Fri 20/1105:45
DUB
-
BWI
2 stops16h 05m
Delta
Sat 28/1114:10
BWI
-
DUB
1 stop12h 35m
Delta
Deal found 8/7£430
Tue 20/1012:50
DUB
-
BWI
1 stop11h 50m
British Airways
Tue 10/1120:35
BWI
-
DUB
1 stop15h 25m
British Airways
Deal found 8/7£442
Fri 17/710:40
DUB
-
DCA
1 stop12h 20m
JetBlue
Fri 7/817:59
DCA
-
DUB
1 stop9h 21m
JetBlue
Deal found 3/7£447
Tue 20/1005:55
DUB
-
IAD
2 stops16h 38m
Delta
Tue 3/1110:07
IAD
-
DUB
2 stops17h 53m
Delta
Deal found 3/7£447
Thu 30/711:30
DUB
-
DCA
1 stop16h 29m
JetBlue
Sat 29/817:47
DCA
-
DUB
1 stop9h 33m
JetBlue
Deal found 6/7£447
Wed 21/1005:55
DUB
-
IAD
2 stops22h 16m
Delta
Wed 4/1112:30
IAD
-
DUB
2 stops15h 30m
Delta
Deal found 7/7£447
Mon 24/809:40
DUB
-
IAD
2 stops15h 44m
Multiple Airlines
Mon 31/820:30
IAD
-
DUB
1 stop11h 45m
Multiple Airlines
Deal found 4/7£450
Wed 28/1011:55
DUB
-
DCA
1 stop12h 04m
KLM
Sun 1/1106:05
DCA
-
DUB
1 stop21h 40m
KLM
Deal found 3/7£453
Fri 23/1008:45
DUB
-
IAD
2 stops16h 40m
Multiple Airlines
Fri 6/1116:30
IAD
-
DUB
1 stop9h 40m
Multiple Airlines
Deal found 7/7£453
Fri 18/908:55
DUB
-
IAD
1 stop11h 40m
Delta
Wed 23/918:26
IAD
-
DUB
2 stops15h 59m
Delta
Deal found 6/7£454

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 8 July 2026.

Round-trip from

£387

One-way from

£340

Popular in

March

Cheapest in

February

Average price

£574

Good round-trip deal

£536 or less
Icelandair
  • Icelandair
  • 18/11-28/11
  • 2 total stops
  • 21h 45m total
  • Ireland to Washington, D.C.
Search Deals
JetBlue
  • JetBlue
  • 7/8
  • 1 total stop
  • 16h 29m total
  • Ireland to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£5 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 8 July 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

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Tue 20/10

12:50-19:40

1 stop11h 50m

Baltimore/Washington

Tue 10/11

20:35-17:00

1 stop15h 25m

£442

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Wed 21/10

17:50-19:40

1 stop30h 50m

Baltimore/Washington

Wed 4/11

20:35-17:00

1 stop15h 25m

£442

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Thu 30/7

11:30-22:59

1 stop16h 29m

Washington, D.C. Reagan-National

Sat 29/8

17:47-08:20

1 stop9h 33m

£447

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 21/10

05:55-23:11

2 stops22h 16m

Washington, D.C. Dulles Intl

Wed 4/11

21:30-18:25

1 stop15h 55m

£448

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Wed 28/10

11:55-19:59

1 stop12h 04m

Washington, D.C. Reagan-National

Sun 1/11

06:05-08:45

1 stop21h 40m

£453

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 23/10

09:15-23:11

2 stops18h 56m

Washington, D.C. Dulles Intl

Fri 6/11

10:07-07:45

1 stop16h 38m

£454

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 25/8

12:50-20:20

1 stop12h 30m

Washington, D.C. Dulles Intl

Tue 22/9

22:25-17:00

1 stop13h 35m

£456

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Sun 4/10

11:00-23:43

1 stop17h 43m

Washington, D.C. Reagan-National

Sat 17/10

06:08-10:00

1 stop22h 52m

£456

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Fri 23/10

09:20-22:59

2 stops18h 39m

Baltimore/Washington

Fri 6/11

06:10-08:10

1 stop21h 00m

£457

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Tue 20/10

09:50-22:59

2 stops18h 09m

Baltimore/Washington

Tue 10/11

10:10-07:30

2 stops16h 20m

£457

Flights are sorted by cheapest return flights first.

Deals found on 3/7

Showing 1-10 of 50 resultsSorted by cheapest first
1
2
3
...
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 £135). Flying from Ireland to Washington, D.C. in July is currently the most expensive (average of £429). 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 8 July 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 8 July 2026.

The most flights from IE0 to WAS are scheduled on a Monday (15 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (11 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 154 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 14% 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 53 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 8 July 2026.
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
9,951 reviews
Check prices

Boarding

7.7

Comfort

7.3

Food

6.7

Crew

8.1

Entertainment

7.1

Overall

7.4

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
9,951 reviews
United Airlines
7.4
Good
9,951 reviews
Check prices

Boarding

7.7

Comfort

7.3

Food

6.7

Crew

8.1

Entertainment

7.1

Overall

7.4

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
1,648 reviews
United Airlines
7.4
Good
9,951 reviews
Check prices

Boarding

7.7

Comfort

7.3

Food

6.7

Crew

8.1

Entertainment

7.1

Overall

7.4

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
Icelandair
7.0
Good
703 reviews
United Airlines
7.4
Good
9,951 reviews
Check prices

Boarding

7.7

Comfort

7.3

Food

6.7

Crew

8.1

Entertainment

7.1

Overall

7.4

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.?

    There are many flights that can get you from Ireland to Washington, D.C. in 11h 50m. Fly via British Airways, JetBlue, or Delta to get the fastest option. Ireland and Washington, D.C. are separated by a distance of 3351 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 - Washington, D.C. Reagan-National or Dublin - Washington, D.C. Dulles Intl, Dublin - Baltimore/Washington 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: Qatar Airways (87%), American Airlines (85%), Aer Lingus (85%).

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

    On average you can expect to pay £1,286 for a flight from Ireland to Washington, D.C.. The cheapest flight overall is £435 while the most popular route, (Dublin - Baltimore/Washington) is currently priced at £500.

  • 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 £135). Flying from Ireland to Washington, D.C. in July is currently the most expensive (average of £429). 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
Gaithersburg
Oxon Hill
Hanover
Woodbridge
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 8 July 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£297Average£416FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£324Average£420FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£336Average£600FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£342Average£454FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
IcelandairCheapest£373Average£477FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.