Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Ireland to Washington, D.C. Dulles Intl Airport from £264

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — IAD
2 May — 9 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ireland to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Ireland to Dulles Intl
Explore the most affordable flight options available from Ireland to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 April 2026.

Fri 17/412:15
DUB
-
IAD
1 stop12h 05m
Icelandair
Mon 20/420:30
IAD
-
DUB
1 stop11h 45m
Icelandair
Deal found 1/4£383
Fri 17/412:15
DUB
-
IAD
1 stop12h 05m
Icelandair
Sun 19/420:30
IAD
-
DUB
1 stop11h 45m
Icelandair
Deal found 1/4£385
Thu 30/412:40
DUB
-
IAD
2 stops35h 40m
Multiple Airlines
Mon 4/520:30
IAD
-
DUB
2 stops20h 30m
Multiple Airlines
Deal found 29/3£389
Thu 30/414:15
DUB
-
IAD
1 stop10h 05m
Icelandair
Wed 6/520:30
IAD
-
DUB
1 stop11h 45m
Icelandair
Deal found 30/3£398
Thu 9/414:15
DUB
-
IAD
1 stop10h 05m
Icelandair
Sat 18/420:30
IAD
-
DUB
1 stop9h 35m
Icelandair
Deal found 31/3£409
Thu 16/414:15
DUB
-
IAD
1 stop10h 05m
Icelandair
Mon 20/420:30
IAD
-
DUB
1 stop11h 45m
Icelandair
Deal found 29/3£409
Wed 29/412:15
DUB
-
IAD
1 stop12h 05m
Icelandair
Tue 5/520:30
IAD
-
DUB
1 stop9h 35m
Icelandair
Deal found 30/3£414
Wed 29/412:15
DUB
-
IAD
1 stop12h 05m
Icelandair
Mon 4/520:30
IAD
-
DUB
1 stop11h 45m
Icelandair
Deal found 30/3£415
Wed 29/412:15
DUB
-
IAD
1 stop12h 05m
Icelandair
Fri 8/523:20
IAD
-
DUB
1 stop30h 45m
Icelandair
Deal found 30/3£416
Tue 25/814:15
DUB
-
IAD
1 stop10h 05m
Icelandair
Tue 22/920:30
IAD
-
DUB
1 stop9h 35m
Icelandair
Deal found 31/3£420
Thu 9/414:15
DUB
-
IAD
1 stop10h 05m
Icelandair
Wed 15/420:30
IAD
-
DUB
1 stop11h 45m
Icelandair
Deal found 30/3£421

Find flight deals from Ireland to Dulles Intl

Keep the following information in mind while searching for Ireland to Dulles Intl flight deals. Data was last updated 2 April 2026.

Round-trip from

£383

One-way from

£264

Popular in

August

Cheapest in

September

Average price

£442

Good round-trip deal

£541 or less

Good one-way deal

£466 or less
Icelandair
  • Icelandair
  • 17/4-20/4
  • 2 total stops
  • 23h 50m total
  • Ireland to Washington, D.C.
Search Deals
2/6
  • 2/6
  • 2 total stops
  • 37h 42m total
  • Ireland to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£42 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 April 2026
Search Deals
Price to beat on a round-trip flight from Ireland to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Ireland to Washington, D.C. Dulles Intl.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ireland to Dulles Intl 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 2 April 2026.
Use the filters below to find and compare flights from Ireland to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 25/8

14:15-19:20

1 stop10h 05m

Washington, D.C. Dulles Intl

Tue 22/9

20:30-11:05

1 stop9h 35m

£420

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 11/6

08:55-15:35

1 stop11h 40m

Washington, D.C. Dulles Intl

Thu 18/6

11:05-09:15

1 stop17h 10m

£467

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 13/5

08:55-15:35

1 stop11h 40m

Washington, D.C. Dulles Intl

Mon 25/5

13:32-10:00

1 stop15h 28m

£470

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 13/5

05:55-18:53

2 stops17h 58m

Washington, D.C. Dulles Intl

Mon 25/5

06:00-09:15

1 stop22h 15m

£472

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 30/4

05:55-16:15

2 stops15h 20m

Washington, D.C. Dulles Intl

Sat 16/5

11:15-10:00

1 stop17h 45m

£475

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sat 25/4

05:55-23:03

2 stops22h 08m

Washington, D.C. Dulles Intl

Thu 30/4

06:00-07:55

1 stop20h 55m

£485

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sat 2/5

08:35-17:25

1 stop13h 50m

Washington, D.C. Dulles Intl

Tue 5/5

22:25-18:50

1 stop15h 25m

£486

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 1/5

13:25-00:42

2 stops16h 17m

Washington, D.C. Dulles Intl

Fri 15/5

17:40-10:25

1 stop11h 45m

£535

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 25/8

11:40-17:00

2 stops34h 20m

Washington, D.C. Dulles Intl

Tue 22/9

12:30-11:50

2 stops18h 20m

£577
Cheapest one-way

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 2/6

07:40-16:22

2 stops37h 42m

£264

Flights are sorted by cheapest return flights first.

Deals found on 29/3

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

Best time to book a flight from Ireland to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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. Dulles Intl Airport

What is the cheapest month to book a flight from Ireland to Washington, D.C. Dulles Intl Airport?

Currently, December is the cheapest month in which you can book a flight from Ireland to Washington, D.C. Dulles Intl Airport (average of £275). Flying from Ireland to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £467). 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 IAD?

Find hourly flight availability from Ireland to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 2 April 2026.

When flying from Ireland to Washington, D.C. Dulles Intl Airport, 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. Dulles Intl Airport

Explore weekly flight availability from Ireland to Dulles Intl. 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 2 April 2026.

The most flights from IE0 to IAD 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 153 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.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated 2 April 2026.
Get a feel of what it's like to fly with United Airlines,Aer Lingus, andLufthansa from Ireland to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,533 reviews
Check prices

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,533 reviews
United Airlines
7.4
Good
9,533 reviews
Check prices

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Aer Lingus
7.2
Good
1,495 reviews
United Airlines
7.4
Good
9,533 reviews
Check prices

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Lufthansa
6.8
Okay
7,883 reviews
United Airlines
7.4
Good
9,533 reviews
Check prices

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from Ireland to Dulles Intl. 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. Dulles Intl Airport?

    For as low as £420, Icelandair can have you in Washington, D.C. Dulles Intl Airport from Ireland in 10h 05m. Airlines will cover 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 most reliable airlines from Ireland to Washington, D.C. Dulles Intl Airport?

    Before booking your flight to Washington, D.C. Dulles Intl Airport from Ireland, check out the most reliable airlines to get you to your destination on time: SWISS (100%), American Airlines (71%), Aer Lingus( 71%).

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

    On average you can expect to pay £798 for a flight from Ireland to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is £400 while the most popular route, (Dublin - Washington, D.C. Dulles Intl) is currently priced at £385.

  • Can I find deals for flights from Ireland to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Ireland to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Ireland to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to Dulles Intl.

  • Can I find deals for business class flights from Ireland to Dulles Intl?

    Yes. Cheapflights offers flight deals from Ireland to Dulles Intl 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. Dulles Intl Airport?

    Currently, December is the cheapest month in which you can book a flight from Ireland to Washington, D.C. Dulles Intl Airport (average of £275). Flying from Ireland to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £467). 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. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Gaithersburg
Woodbridge
Arlington
Alexandria
Sterling

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.

Alternative routes for Ireland to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Dulles Intl flights
Heathrow to Baltimore flights
Heathrow to Reagan-National flights
Gatwick to Dulles Intl flights
Stansted to Dulles Intl flights
London City to Dulles Intl flights
Gatwick to Baltimore flights
Gatwick to Reagan-National flights
Luton to Dulles Intl flights
Edinburgh to Dulles Intl flights
Manchester to Dulles Intl flights
Manchester to Baltimore flights
Manchester to Reagan-National flights
Edinburgh to Reagan-National flights
Stansted to Baltimore flights
Edinburgh to Baltimore flights
London City to Baltimore flights
Glasgow Intl to Dulles Intl flights
Luton to Baltimore flights
Glasgow Intl to Reagan-National flights
Glasgow Intl to Baltimore flights
Dublin to Dulles Intl flights
London City to Reagan-National flights
Birmingham to Dulles Intl flights
Birmingham to Reagan-National flights
Birmingham to Baltimore flights
Newcastle upon Tyne to Dulles Intl flights
Aberdeen to Reagan-National flights
Aberdeen to Dulles Intl flights
Bristol to Dulles Intl flights
Aberdeen to Baltimore flights
Belfast Intl to Dulles Intl flights
Belfast City to Dulles Intl flights
Leeds to Dulles Intl flights
Bristol to Baltimore flights
Dublin to Baltimore flights
Belfast Intl to Baltimore flights
Belfast City to Baltimore flights
Bristol to Reagan-National flights
Amsterdam to Dulles Intl flights
Newcastle upon Tyne to Reagan-National flights
Southampton to Dulles Intl flights
Belfast City to Reagan-National flights
Liverpool to Baltimore flights
Leeds to Baltimore flights
Southend to Dulles Intl flights
Newcastle upon Tyne to Baltimore flights

Top 3 airlines flying from Ireland to Dulles Intl

Discover the top 3 airlines that operate flights from Ireland to Dulles Intl. 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 2 April 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£298Average£434FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£338Average£603FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Aer LingusCheapest£344Average£430FlexibilityNo 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 Dulles Intl?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Dulles Intl from Ireland today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Ireland to Dulles Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ireland to Dulles Intl.

Can Cheapflights find flights from Ireland to Dulles Intl with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ireland to Dulles Intl, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Ireland to Dulles Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Ireland today and book when prices fit your budget.

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.