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Cheap flights from Washington, D.C. Dulles Intl Airport to Dublin from £290

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 25/11. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — DUB
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Dublin are usually found in February or January, booked 57 days in advance, depart on a Sunday or Monday and return on a Tuesday

Cheap 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 15 September 2025.

Round-trip from

£336

One-way from

£290

Popular in

June

Cheapest in

February

Average price

£501

Good round-trip deal

£449 or less

Good one-way deal

£294 or less
United Airlines
  • United Airlines
  • 3/12-10/12
  • 1 total stop
  • 18h 51m total
  • Washington, D.C. to Dublin
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United Airlines
  • United Airlines
  • 25/11
  • Nonstop
  • 7h 00m total
  • Washington, D.C. to Dublin
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£61 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Dublin.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Dublin.
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Find flight deals from Dulles Intl to Dublin

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 15 September 2025.

Tue 4/1122:20IAD - DUB
Nonstop7h 00mUnited Airlines
Wed 12/1109:00DUB - IAD
1 stop11h 51mUnited Airlines
Deal found 14/9£336
Tue 28/1023:20IAD - DUB
Nonstop7h 00mMultiple Airlines
Tue 4/1105:00DUB - IAD
1 stop15h 50mMultiple Airlines
Deal found 13/9£338
Tue 28/1006:30IAD - DUB
2 stops19h 40mUnited Airlines
Tue 4/1109:30DUB - IAD
1 stop11h 55mUnited Airlines
Deal found 13/9£338
Wed 19/1117:33IAD - DUB
1 stop11h 22mUnited Airlines
Wed 26/1109:00DUB - IAD
2 stops17h 22mUnited Airlines
Deal found 12/9£339
Tue 4/1122:20IAD - DUB
Nonstop7h 00mUnited Airlines
Tue 11/1112:05DUB - IAD
Nonstop8h 15mUnited Airlines
Deal found 14/9£340
Wed 26/1112:31IAD - DUB
1 stop14h 14mKLM
Tue 2/1217:15DUB - IAD
1 stop27h 50mKLM
Deal found 12/9£341
Mon 1/1217:10IAD - DUB
2 stops33h 00mMultiple Airlines
Tue 9/1205:00DUB - IAD
1 stop15h 50mMultiple Airlines
Deal found 14/9£342
Sun 26/1017:38IAD - DUB
1 stop9h 52mUnited Airlines
Thu 6/1112:05DUB - IAD
Nonstop8h 15mUnited Airlines
Deal found 13/9£343
Tue 4/1116:25IAD - DUB
1 stop9h 45mUnited Airlines
Thu 13/1112:05DUB - IAD
Nonstop8h 15mUnited Airlines
Deal found 14/9£344
Wed 19/1118:50IAD - DUB
1 stop15h 55mDelta
Thu 27/1110:45DUB - IAD
1 stop13h 23mDelta
Deal found 13/9£345
Tue 18/1122:20IAD - DUB
Nonstop7h 00mUnited Airlines
Mon 24/1109:00DUB - IAD
2 stops35h 55mUnited Airlines
Deal found 12/9£346
Sun 12/1007:05IAD - DUB
1 stop20h 40mDelta
Fri 14/1108:45DUB - IAD
2 stops20h 33mDelta
Deal found 15/9£347

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 15 September 2025.
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

Dulles Intl

Fly to

Dublin

Route

Depart

Return

Price

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 10/3

12:45-06:10

2 stops13h 25m

Dublin

Tue 17/3

09:30-16:14

1 stop10h 44m

£338

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 4/11

16:25-07:10

1 stop9h 45m

Dublin

Thu 13/11

12:05-15:20

Nonstop8h 15m

£344

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 4/11

16:25-07:10

1 stop9h 45m

Dublin

Tue 11/11

12:05-15:20

Nonstop8h 15m

£344

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 11/11

22:20-10:20

Nonstop7h 00m

Dublin

Sun 16/11

09:00-16:09

2 stops36h 09m

£356

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 19/11

17:33-09:55

1 stop11h 22m

Dublin

Sun 23/11

09:00-15:51

1 stop11h 51m

£359

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 11/11

22:20-10:20

Nonstop7h 00m

Dublin

Sat 22/11

12:05-15:20

Nonstop8h 15m

£360

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Thu 30/10

23:20-10:20

Nonstop7h 00m

Dublin

Thu 6/11

12:05-15:20

Nonstop8h 15m

£360

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Thu 6/11

22:20-10:20

Nonstop7h 00m

Dublin

Wed 12/11

12:05-15:20

Nonstop8h 15m

£360

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 10/11

22:20-10:20

Nonstop7h 00m

Dublin

Mon 17/11

12:05-15:20

Nonstop8h 15m

£360

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 10/11

22:12-07:10

2 stops27h 58m

Dublin

Tue 18/11

05:00-15:50

1 stop15h 50m

£362

Flights are sorted by cheapest return flights first.

Deals found on 13/9

Showing 1-10 of 19 results
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?

Use this chart to determine the optimal time to book a return flight from Dulles Intl to Dublin. Price data was last updated on 12 September 2025.

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 57 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 £71). Flying from Washington, D.C. Dulles Intl Airport to Dublin in August is currently the most expensive (average of £93). 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 15 September 2025.

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Dublin is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the morning could potentially save you up to 6% on airfare.

Reviews of airlines servicing Dublin

Get insights into the airlines that provide service to Dublin. 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 Dublin. Reviews last updated 15 September 2025.
Get a feel of what it's like to fly with Aer Lingus from Washington, D.C. Dulles Intl Airport to Dublin by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,271 reviews
Check prices

Crew

8.0

Entertainment

6.9

Overall

7.2

Food

6.5

Comfort

7.1

Boarding

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.
Aer Lingus
7.2
Good
1,271 reviews
Aer Lingus
7.2
Good
1,271 reviews
Check prices

Crew

8.0

Entertainment

6.9

Overall

7.2

Food

6.5

Comfort

7.1

Boarding

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.

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 11 inbound flights from Washington, D.C. Dulles Intl per day. 1 airline has 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 and Delta can get you from Washington, D.C. Dulles Intl Airport to Dublin in just under 7h. Your travel time can differ by up to 7h 47m. 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 is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Dublin round-trip?

    Flying on Aer Lingus is currently your cheapest option to Dublin, with prices starting at £297. This flight start at 42% lower than the current average price 3 months from now.

  • 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 American Airlines (67%), Aer Lingus (67%) or Iberia (67%) 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 £402, our data indicates the cheapest price to be £235. The most popular route (Washington, D.C. Dulles Intl - Dublin), is priced around £359.

  • 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 £71). Flying from Washington, D.C. Dulles Intl Airport to Dublin in August is currently the most expensive (average of £93). 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
Wicklow
Athlone
Tullamore
Bray
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Malahide
Portmarnock
Enniscorthy
Dundalk
Mullingar
Arklow
Carlingford
Kildare
Maynooth
Swords
Castleknock
Naas

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Top airline flying from Dulles Intl to Dublin

Discover the top airline that operate flights from Dulles Intl to Dublin. 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 15 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£297Average£526FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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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.

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