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Cheap flights from Washington, D.C. Dulles Intl Airport to Dublin from £310

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 19/10. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — DUB
14 Nov — 21 Nov1
1 adult
1 adult, Economy

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

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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 October 2025.

Mon 3/1121:00IAD - DUB
Nonstop6h 50mAer Lingus
Tue 11/1112:15DUB - IAD
Nonstop8h 20mAer Lingus
Deal found 14/10£361
Tue 11/1122:20IAD - DUB
Nonstop7h 00mMultiple Airlines
Tue 18/1111:45DUB - IAD
1 stop13h 30mMultiple Airlines
Deal found 13/10£362
Sun 23/1122:20IAD - DUB
Nonstop7h 00mUnited Airlines
Wed 3/1209:00DUB - IAD
2 stops31h 39mUnited Airlines
Deal found 13/10£363
Sun 26/1006:30IAD - DUB
1 stop21h 40mMultiple Airlines
Tue 4/1105:00DUB - IAD
1 stop15h 50mMultiple Airlines
Deal found 13/10£364
Mon 27/1023:20IAD - DUB
Nonstop7h 00mMultiple Airlines
Mon 3/1113:20DUB - IAD
1 stop32h 20mMultiple Airlines
Deal found 13/10£364
Wed 29/1008:45IAD - DUB
1 stop18h 45mMultiple Airlines
Wed 5/1105:10DUB - IAD
1 stop15h 40mMultiple Airlines
Deal found 14/10£365
Tue 25/1117:33IAD - DUB
1 stop11h 22mMultiple Airlines
Wed 10/1209:00DUB - IAD
2 stops17h 22mMultiple Airlines
Deal found 14/10£366
Sun 26/1023:20IAD - DUB
Nonstop7h 00mUnited Airlines
Fri 7/1112:05DUB - IAD
Nonstop8h 15mUnited Airlines
Deal found 14/10£367
Sun 26/1012:09IAD - DUB
1 stop16h 36mDelta
Tue 4/1105:55DUB - IAD
1 stop15h 10mDelta
Deal found 14/10£368
Tue 4/1118:50IAD - DUB
1 stop15h 55mDelta
Tue 11/1113:25DUB - IAD
1 stop31h 40mDelta
Deal found 14/10£369
Wed 22/1017:18IAD - DUB
1 stop9h 02mUnited Airlines
Wed 5/1112:05DUB - IAD
Nonstop8h 15mUnited Airlines
Deal found 14/10£370
Tue 25/1122:20IAD - DUB
Nonstop7h 00mMultiple Airlines
Tue 2/1217:55DUB - IAD
1 stop31h 10mMultiple Airlines
Deal found 13/10£370

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 October 2025.

Round-trip from

£361

One-way from

£310

Popular in

June

Cheapest in

January

Average price

£487

Good round-trip deal

£501 or less
Aer Lingus
  • Aer Lingus
  • 3/11-11/11
  • Nonstop
  • 15h 10m total
  • Washington, D.C. to Dublin
Search Deals
United Airlines
  • United Airlines
  • 19/10
  • Nonstop
  • 7h 05m total
  • Washington, D.C. to Dublin
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£55 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip 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 15 October 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

Mon 27/10

23:20-10:20

Nonstop7h 00m

Dublin

Wed 5/11

05:10-15:50

1 stop15h 40m

£362

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Sun 23/11

22:20-10:20

Nonstop7h 00m

Dublin

Wed 3/12

09:00-11:39

2 stops31h 39m

£363

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 13/1

21:45-14:20

1 stop11h 35m

Dublin

Thu 22/1

13:10-19:55

1 stop11h 45m

£367

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 13/1

18:20-09:35

1 stop10h 15m

Dublin

Fri 23/1

08:50-15:35

1 stop11h 45m

£367

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 7/1

18:20-12:15

1 stop12h 55m

Dublin

Tue 20/1

08:50-15:35

1 stop11h 45m

£367

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 25/11

22:20-10:20

Nonstop7h 00m

Dublin

Tue 2/12

17:55-20:05

1 stop31h 10m

£370

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 26/11

22:20-10:20

Nonstop7h 00m

Dublin

Thu 4/12

09:30-16:30

1 stop12h 00m

£374

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 29/10

10:11-08:05

2 stops17h 54m

Dublin

Tue 4/11

05:55-16:05

1 stop15h 10m

£376

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 27/10

17:10-12:40

2 stops15h 30m

Dublin

Wed 5/11

08:50-16:05

1 stop12h 15m

£376

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Sat 10/1

19:59-08:45

1 stop31h 46m

Dublin

Thu 22/1

05:55-16:05

1 stop15h 10m

£376

Flights are sorted by cheapest return flights first.

Deals found on 13/10

Showing 1-10 of 16 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 10 October 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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Dublin (average of £279). Flying from Washington, D.C. Dulles Intl Airport to Dublin in June is currently the most expensive (average of £400). 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 October 2025.

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.

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 October 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
1,336 reviews
Check prices

Food

6.5

Overall

7.2

Boarding

7.4

Comfort

7.1

Crew

8.0

Entertainment

6.9

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
1,336 reviews
Aer Lingus
7.2
Good
1,336 reviews
Check prices

Food

6.5

Overall

7.2

Boarding

7.4

Comfort

7.1

Crew

8.0

Entertainment

6.9

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 14 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 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 4h 35m. 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 £303. This flight start at 43% 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 (82%), Aer Lingus (82%) or Iberia (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 £694, our data indicates the cheapest price to be £440. The most popular route (Washington, D.C. Dulles Intl - Dublin), is priced around £645.

  • 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, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Dublin (average of £279). Flying from Washington, D.C. Dulles Intl Airport to Dublin in June is currently the most expensive (average of £400). 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
Athlone
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Mullingar
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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 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£303Average£536FlexibilityNo 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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