Find flights
Deals
When to book
FAQs

Cheap flights from Washington, D.C. Dulles Intl Airport to Dublin from £144

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 28/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — DUB
28 Aug — 4 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Dublin are usually found in January or November, booked 4 days in advance, depart on a Monday or Friday and return on a Tuesday

Cheap flight deals from Dulles Intl to Dublin

Enter your travel dates to find the best prices.

Cheapest flights from Dulles Intl to Dublin
Explore the most affordable flight options available from Dulles Intl to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 July 2026.

Tue 20/1020:30
IAD
-
DUB
1 stop9h 35m
Icelandair
Wed 28/1011:30
DUB
-
IAD
1 stop12h 00m
Icelandair
Deal found 26/7£483
Wed 2/923:20
IAD
-
DUB
1 stop30h 45m
Multiple Airlines
Wed 9/921:30
DUB
-
IAD
3 stops27h 55m
Multiple Airlines
Deal found 29/7£484
Sat 3/1020:30
IAD
-
DUB
1 stop9h 35m
Icelandair
Wed 14/1012:15
DUB
-
IAD
1 stop15h 00m
Icelandair
Deal found 24/7£486
Mon 28/920:30
IAD
-
DUB
1 stop11h 45m
Icelandair
Thu 15/1014:15
DUB
-
IAD
1 stop10h 05m
Icelandair
Deal found 29/7£487
Mon 28/920:30
IAD
-
DUB
1 stop11h 45m
Icelandair
Thu 8/1014:15
DUB
-
IAD
1 stop10h 05m
Icelandair
Deal found 25/7£491
Mon 28/1219:40
IAD
-
DUB
1 stop9h 35m
Icelandair
Thu 28/111:30
DUB
-
IAD
1 stop12h 00m
Icelandair
Deal found 28/7£494
Wed 2/923:20
IAD
-
DUB
1 stop30h 45m
Multiple Airlines
Fri 11/908:00
DUB
-
IAD
2 stops17h 35m
Multiple Airlines
Deal found 25/7£496
Mon 16/1106:10
IAD
-
DUB
1 stop20h 20m
United Airlines
Thu 26/1109:00
DUB
-
IAD
1 stop31h 45m
United Airlines
Deal found 27/7£511
Wed 4/1122:20
IAD
-
DUB
Nonstop7h 00m
Multiple Airlines
Wed 18/1105:10
DUB
-
IAD
1 stop15h 45m
Multiple Airlines
Deal found 29/7£516

Find flight deals from Dulles Intl to Dublin

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Dublin (DUB). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 29 July 2026.

Round-trip from

£483

One-way from

£144

Popular in

June

Cheapest in

January

Average price

£730

Good round-trip deal

£690 or less

Good one-way deal

£349 or less
Icelandair
  • Icelandair
  • 20/10-28/10
  • 2 total stops
  • 21h 35m total
  • Washington, D.C. to Dublin
Search Deals
Icelandair
  • Icelandair
  • 28/8
  • 1 total stop
  • 30h 45m total
  • Washington, D.C. to Dublin
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£121 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£17 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 Washington, D.C. Dulles Intl to Dublin.
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Dublin.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Dulles Intl to Dublin 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 29 July 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Dublin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 5/10

18:26-15:25

2 stops15h 59m

Dublin

Thu 15/10

05:55-15:35

1 stop14h 40m

£554
Fastest return journey

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 1/9

19:15-07:20

Nonstop7h 05m

Dublin

Tue 8/9

09:20-15:00

1 stop10h 40m

£605

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 26/8

17:45-09:40

1 stop10h 55m

Dublin

Wed 2/9

12:50-19:40

1 stop11h 50m

£613

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Sun 6/9

19:15-12:05

1 stop11h 50m

Dublin

Mon 14/9

15:15-19:40

1 stop33h 25m

£615

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 2/9

12:35-07:30

1 stop13h 55m

Dublin

Wed 9/9

08:50-11:50

Nonstop8h 00m

£618

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 2/9

12:35-07:30

1 stop13h 55m

Dublin

Fri 11/9

08:50-11:50

Nonstop8h 00m

£618

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 1/9

12:35-11:10

1 stop17h 35m

Dublin

Wed 9/9

12:30-15:35

Nonstop8h 05m

£618

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Sat 22/8

22:41-07:30

1 stop27h 49m

Dublin

Thu 3/9

09:50-19:01

1 stop14h 11m

£621

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Fri 11/9

06:15-07:30

1 stop20h 15m

Dublin

Fri 18/9

09:20-07:43

2 stops27h 23m

£644

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 7/9

19:15-07:20

Nonstop7h 05m

Dublin

Mon 14/9

09:20-15:00

1 stop10h 40m

£646

Flights are sorted by cheapest return flights first.

Deals found on 27/7

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Best time to book a flight from Dulles Intl to Dublin

Have a flexible travel schedule? Discover the best time to fly to Dublin from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Dublin

How far ahead should I book a flight from Washington, D.C. Dulles Intl Airport to Dublin?

The price you pay for your flight from Washington, D.C. Dulles Intl Airport to Dublin may vary depending on when you book. For the best chance of a lower fare, look to book 3 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Dublin (average of £456). Flying from Washington, D.C. Dulles Intl Airport to Dublin in June is currently the most expensive (average of £821). 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 IAD to DUB?

Find hourly flight availability from Dulles Intl to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 July 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to Dublin as you normally would.

How much does it cost for a return flight from Washington, D.C. Dulles Intl Airport to Dublin?

Airfare is typical for this route at the moment.

Washington, D.C. Dulles Intl Airport to Dublin flights typically cost between £469 and £647 in October.
The cheapest return price found within the last 5 days was £483 on Icelandair (20 Oct–28 Oct).

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Dublin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Dublin from Washington, D.C. Dulles Intl?

    For a flight from Washington, D.C. Dulles Intl to Dublin, you will be flying into Dublin. Dublin (DUB) is just 5.7 mi from the center of the city. Dublin is the only Dublin airport and it handles 13 inbound flights from Washington, D.C. Dulles Intl per day. 0 airlines have flights to Dublin from Washington, D.C. Dulles Intl on a regular basis.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Dublin?

    United Airlines, Delta, and British Airways can get you from Washington, D.C. Dulles Intl Airport to Dublin in just under 7h. Your travel time can differ by up to 8h 59m. Washington, D.C. Dulles Intl Airport and Dublin are separated by a distance of 3393 mi. This flight may include one or multiple stops.

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Dublin?

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. Dulles Intl Airport to Dublin consider choosing Qatar Airways (85%), American Airlines (82%) or Aer Lingus (82%) as they are the most reliable in getting you off to your destination on time.

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

    Looking for the cheapest flight from Washington, D.C. Dulles Intl Airport to Dublin? While on average our users pay £548, our data indicates the cheapest price to be £340. The most popular route (Washington, D.C. Dulles Intl - Dublin), is priced around £583.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Dublin 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 Washington, D.C. Dulles Intl Airport to Dublin?

    Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Dublin (average of £456). Flying from Washington, D.C. Dulles Intl Airport to Dublin in June is currently the most expensive (average of £821). 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 Dublin?

Book flights to Dublin if you plan to visit one of these locations
Arklow
Cavan
Portmarnock
Athlone
Dundalk
Wicklow
Bray
Enniscorthy
Malahide
Maynooth
Drogheda
Kildare
Swords

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.

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 Dulles Intl to Dublin?

Deals for Dulles Intl to Dublin flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights simply makes it quick and affordable to book flights from Dulles Intl to Dublin 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 Dulles Intl to Dublin with no change fees?

Yes, we can. To see specific flights from Dulles Intl to Dublin with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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.