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Cheap flights from Washington, D.C. Dulles Intl Airport to Dublin from £215

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 24/9. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — DUB
5 Sep — 12 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 6 August 2026.

Tue 15/916:00 -
1 stop14h 30m
Tue 22/913:15 -
1 stop12h 10m
Deal found 3/8£476
Mon 28/920:30 -
1 stop11h 45m
Wed 7/1012:15 -
1 stop15h 00m
Deal found 1/8£482
Fri 25/1219:40 -
1 stop9h 35m
Mon 11/111:30 -
1 stop12h 00m
Deal found 4/8£484
Tue 15/922:35 -
1 stop20h 20m
Tue 22/918:50 -
1 stop25h 20m
Deal found 1/8£493
Thu 22/1022:35 -
1 stop14h 30m
Wed 4/1104:25 -
1 stop15h 50m
Deal found 3/8£496
Thu 22/1022:35 -
1 stop14h 30m
Wed 28/1016:55 -
1 stop27h 20m
Deal found 5/8£497
Tue 6/1022:35 -
1 stop20h 20m
Fri 16/1005:30 -
1 stop13h 55m
Deal found 5/8£500
Sat 14/1122:35 -
1 stop30h 20m
Fri 4/1209:00 -
2 stops31h 48m
Deal found 2/8£501
Thu 31/1219:40 -
1 stop9h 35m
Wed 13/111:30 -
1 stop12h 00m
Deal found 2/8£503
Mon 21/922:35 -
1 stop30h 25m
Tue 29/918:50 -
1 stop25h 20m
Deal found 4/8£506

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 6 August 2026.

Round-trip from

£476

One-way from

£215

Popular in

June

Cheapest in

January

Average price

£519

Good round-trip deal

£666 or less

Good one-way deal

£355 or less
15/9-22/9
  • 15/9-22/9
  • 2 total stops
  • 26h 40m total
  • Washington, D.C. to Dublin
Search Deals
24/9
  • 24/9
  • 1 total stop
  • 16h 55m total
  • Washington, D.C. to Dublin
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£115 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 August 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 6 August 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 Washington, D.C. Dulles Intl - DUB Dublin

IADDUB

Washington, D.C. Dulles Intl

Sun 15/11

12:35-09:00

2 stops15h 25m

Dublin

Tue 24/11

05:45-15:45

1 stop15h 00m

£518

Washington, D.C.Dublin

IAD Washington, D.C. Dulles Intl - DUB Dublin

IADDUB

Washington, D.C. Dulles Intl

Tue 6/10

22:35-10:40

Nonstop7h 05m

Dublin

Wed 14/10

09:20-15:25

1 stop11h 05m

£536

Washington, D.C.Dublin

IAD Washington, D.C. Dulles Intl - DUB Dublin

IADDUB

Washington, D.C. Dulles Intl

Wed 4/11

17:50-09:55

1 stop11h 05m

Dublin

Tue 10/11

12:05-15:20

Nonstop8h 15m

£539

Washington, D.C.Dublin

IAD Washington, D.C. Dulles Intl - DUB Dublin

IADDUB

Washington, D.C. Dulles Intl

Wed 16/12

09:55-07:10

1 stop16h 15m

Dublin

Wed 23/12

12:05-15:20

Nonstop8h 15m

£541

Washington, D.C.Dublin

IAD Washington, D.C. Dulles Intl - DUB Dublin

IADDUB

Washington, D.C. Dulles Intl

Wed 4/11

22:20-10:20

Nonstop7h 00m

Dublin

Sun 8/11

09:00-15:45

1 stop11h 45m

£570
Fastest return journey

Washington, D.C.Dublin

IAD Washington, D.C. Dulles Intl - DUB Dublin

IADDUB

Washington, D.C. Dulles Intl

Wed 23/9

22:35-10:40

Nonstop7h 05m

Dublin

Sun 25/10

12:05-16:20

Nonstop8h 15m

£580

Washington, D.C.Dublin

IAD Washington, D.C. Dulles Intl - DUB Dublin

IADDUB

Washington, D.C. Dulles Intl

Mon 7/9

22:25-07:40

1 stop28h 15m

Dublin

Mon 14/9

20:30-19:40

1 stop28h 10m

£604

Washington, D.C.Dublin

IAD Washington, D.C. Dulles Intl - DUB Dublin

IADDUB

Washington, D.C. Dulles Intl

Wed 9/9

17:45-12:55

1 stop14h 10m

Dublin

Mon 14/9

20:30-19:40

1 stop28h 10m

£604

Washington, D.C.Dublin

IAD Washington, D.C. Dulles Intl - DUB Dublin

IADDUB

Washington, D.C. Dulles Intl

Sat 3/10

22:35-10:40

Nonstop7h 05m

Dublin

Sun 11/10

09:20-15:25

1 stop11h 05m

£618

Washington, D.C.Dublin

IAD Washington, D.C. Dulles Intl - DUB Dublin

IADDUB

Washington, D.C. Dulles Intl

Thu 10/9

08:35-11:10

1 stop21h 35m

Dublin

Wed 16/9

09:20-11:21

1 stop31h 01m

£633

Flights are sorted by cheapest return flights first.

Deals found on 1/8

Showing 1-10 of 19 resultsSorted by cheapest first
1
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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 £450). Flying from Washington, D.C. Dulles Intl Airport to Dublin in June is currently the most expensive (average of £810). 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 6 August 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 £475 and £642 in September.
The cheapest return price found within the last 5 days was £476 on Multiple Airlines (15 Sept–22 Sept).

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?

    Delta and United Airlines can get you from Washington, D.C. Dulles Intl Airport to Dublin in just under 7h 05m. Your travel time can differ by up to 8h 20m. 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 £579, our data indicates the cheapest price to be £335. The most popular route (Washington, D.C. Dulles Intl - Dublin), is priced around £576.

  • 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 £450). Flying from Washington, D.C. Dulles Intl Airport to Dublin in June is currently the most expensive (average of £810). 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

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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.

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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!

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