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Cheap flights from Washington, D.C. Dulles Intl Airport to Dublin from £357

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 26/12. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — DUB
30 Dec — 6 Jan1
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 February, booked 58 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 30 November 2025.

Wed 10/1222:20IAD - DUB
Nonstop7h 00mUnited Airlines
Fri 19/1212:05DUB - IAD
Nonstop8h 15mUnited Airlines
Deal found 29/11£397
Wed 10/1222:20IAD - DUB
Nonstop7h 00mUnited Airlines
Mon 15/1209:00DUB - IAD
2 stops36h 11mUnited Airlines
Deal found 29/11£403
Mon 8/1222:20IAD - DUB
Nonstop7h 00mUnited Airlines
Mon 15/1212:05DUB - IAD
Nonstop8h 15mUnited Airlines
Deal found 30/11£406
Fri 12/1207:01IAD - DUB
1 stop19h 44mDelta
Tue 23/1213:25DUB - IAD
1 stop31h 40mDelta
Deal found 29/11£408
Thu 11/1213:10IAD - DUB
1 stop14h 00mUnited Airlines
Wed 17/1212:05DUB - IAD
Nonstop8h 15mUnited Airlines
Deal found 30/11£409
Mon 8/1212:19IAD - DUB
2 stops14h 41mDelta
Mon 15/1208:50DUB - IAD
1 stop12h 15mDelta
Deal found 28/11£412
Fri 12/1206:00IAD - DUB
1 stop20h 45mDelta
Wed 17/1208:45DUB - IAD
1 stop15h 45mDelta
Deal found 29/11£412
Wed 10/1218:50IAD - DUB
1 stop32h 10mDelta
Mon 22/1208:45DUB - IAD
1 stop15h 45mDelta
Deal found 29/11£414
Thu 11/1211:06IAD - DUB
2 stops17h 14mDelta
Wed 17/1208:45DUB - IAD
1 stop15h 45mDelta
Deal found 29/11£416

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 30 November 2025.

Round-trip from

£382

One-way from

£357

Popular in

December

Cheapest in

January

Average price

£475

Good round-trip deal

£479 or less

Good one-way deal

£313 or less
Delta
  • Delta
  • 24/1-4/2
  • 3 total stops
  • 47h 15m total
  • Washington, D.C. to Dublin
Search Deals
Lufthansa
  • Lufthansa
  • 26/12
  • Nonstop
  • 7h 00m total
  • Washington, D.C. to Dublin
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£4 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£14 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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.
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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 30 November 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 2/3

22:20-10:20

Nonstop7h 00m

Dublin

Thu 19/3

12:05-16:20

Nonstop8h 15m

£397

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Sun 1/3

22:20-10:20

Nonstop7h 00m

Dublin

Sun 15/3

08:00-15:46

1 stop11h 46m

£403

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 3/3

22:20-10:20

Nonstop7h 00m

Dublin

Mon 16/3

08:00-21:21

1 stop17h 21m

£403

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 4/3

22:20-10:20

Nonstop7h 00m

Dublin

Mon 16/3

08:00-21:21

1 stop17h 21m

£403

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 11/5

20:20-10:10

2 stops32h 50m

Dublin

Tue 19/5

11:40-16:50

2 stops34h 10m

£406

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 4/3

21:45-07:55

1 stop29h 10m

Dublin

Sun 15/3

20:40-16:35

1 stop23h 55m

£406

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Fri 10/4

19:10-07:20

Nonstop7h 10m

Dublin

Tue 14/4

09:50-15:39

1 stop10h 49m

£406

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Thu 16/4

19:10-07:20

Nonstop7h 10m

Dublin

Tue 21/4

09:50-20:30

1 stop15h 40m

£406

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 15/4

19:10-07:20

Nonstop7h 10m

Dublin

Sun 19/4

09:50-20:30

1 stop15h 40m

£406

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Sat 7/3

22:20-10:20

Nonstop7h 00m

Dublin

Wed 18/3

12:05-16:20

Nonstop8h 15m

£406

Flights are sorted by cheapest return flights first.

Deals found on 30/11

Showing 1-10 of 20 results
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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?

Use this chart to determine the optimal time to book a return flight from Dulles Intl to Dublin. Price data was last updated on 28 November 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 58 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 £280). Flying from Washington, D.C. Dulles Intl Airport to Dublin in June is currently the most expensive (average of £405). 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 30 November 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.

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 12 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 and British Airways can get you from Washington, D.C. Dulles Intl Airport to Dublin in just under 9h 11m. Your travel time can differ by up to 19h 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 cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Dublin one-way?

    The cheapet airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Dublin are Lufthansa (£357), Delta (£361), and United Airlines (£363).

  • 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 Aer Lingus (90%), Qatar Airways (87%) or British Airways (86%) 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 £647, our data indicates the cheapest price to be £294. The most popular route (Washington, D.C. Dulles Intl - Dublin), is priced around £320.

  • 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 £280). Flying from Washington, D.C. Dulles Intl Airport to Dublin in June is currently the most expensive (average of £405). 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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