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Cheap flights from Washington, D.C. Dulles Intl Airport to Dublin from £350

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 25/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — DUB
4 May — 11 May1
1 adult

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Dublin are usually found in November or January, booked 44 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

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 29 April 2025.

Round-trip from

£424

One-way from

£350

Popular in

June

Cheapest in

November

Average price

£585

Good round-trip deal

£607 or less

Good one-way deal

£403 or less
Aer Lingus
  • Aer Lingus
  • 13/5-20/5
  • Nonstop
  • 14h 45m total
  • Washington, D.C. to Dublin
KLM
  • KLM
  • 25/5
  • 1 total stop
  • 10h 43m total
  • Washington, D.C. to Dublin
Highest demand for flights based on searches. 20% potential increase in price (£105 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
Average for round-trip flights in April 2025
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Dublin.
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Dublin.

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 29 April 2025.

Tue 13/521:00IAD - DUB
Nonstop6h 50mAer Lingus
Tue 20/516:35DUB - IAD
Nonstop7h 55mAer Lingus
Deal found 29/4£424
Mon 15/906:35IAD - DUB
2 stops20h 10mUnited Airlines
Wed 24/909:50DUB - IAD
2 stops31h 05mUnited Airlines
Deal found 28/4£424
Fri 31/1020:40IAD - DUB
1 stop9h 35mIcelandair
Fri 7/1111:30DUB - IAD
1 stop11h 50mIcelandair
Deal found 28/4£425
Mon 15/919:05IAD - DUB
Nonstop7h 05mMultiple Airlines
Wed 24/909:20DUB - IAD
1 stop26h 11mMultiple Airlines
Deal found 28/4£426
Mon 26/512:20IAD - DUB
1 stop15h 55mDelta
Wed 4/613:15DUB - IAD
1 stop11h 24mDelta
Deal found 28/4£427
Fri 10/1022:05IAD - DUB
2 stops16h 10mScandinavian Airlines
Tue 21/1012:40DUB - IAD
1 stop12h 19mScandinavian Airlines
Deal found 27/4£428
Sun 25/522:40IAD - DUB
1 stop10h 35mBritish Airways
Thu 5/612:45DUB - IAD
1 stop12h 25mBritish Airways
Deal found 28/4£429
Wed 16/710:25IAD - DUB
2 stops16h 20mAir Canada
Wed 23/709:50DUB - IAD
2 stops16h 11mAir Canada
Deal found 29/4£433
Mon 5/513:56IAD - DUB
1 stop13h 49mKLM
Fri 16/510:00DUB - IAD
1 stop13h 03mKLM
Deal found 28/4£444
Wed 7/520:45IAD - DUB
1 stop16h 05mSWISS
Mon 12/518:40DUB - IAD
1 stop26h 35mSWISS
Deal found 29/4£472
Tue 23/917:25IAD - DUB
2 stops18h 30mAustrian Airlines
Wed 1/1009:00DUB - IAD
2 stops34h 35mAustrian Airlines
Deal found 28/4£509
Wed 30/417:20IAD - DUB
Nonstop6h 50mAmerican Airlines
Wed 7/516:35DUB - IAD
Nonstop7h 55mAmerican Airlines
Deal found 28/4£546

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 April 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 13/5

21:00-08:50

Nonstop6h 50m

Dublin

Tue 20/5

16:35-19:30

Nonstop7h 55m

£424

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 15/9

06:35-07:45

2 stops20h 10m

Dublin

Wed 24/9

09:50-11:55

2 stops31h 05m

£424

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 13/5

22:26-11:10

1 stop31h 44m

Dublin

Wed 28/5

09:50-09:39

1 stop28h 49m

£425

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 26/5

12:20-09:15

1 stop15h 55m

Dublin

Wed 4/6

13:15-19:39

1 stop11h 24m

£427

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Fri 10/10

22:05-19:15

2 stops16h 10m

Dublin

Tue 21/10

12:40-19:59

1 stop12h 19m

£428

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Sun 25/5

22:40-14:15

1 stop10h 35m

Dublin

Thu 5/6

12:45-20:10

1 stop12h 25m

£429

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 16/7

10:25-07:45

2 stops16h 20m

Dublin

Wed 23/7

09:50-21:01

2 stops16h 11m

£433

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 11/8

23:15-13:15

1 stop9h 00m

Dublin

Fri 22/8

12:15-22:10

1 stop14h 55m

£438

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Thu 15/5

12:53-08:45

1 stop14h 52m

Dublin

Thu 29/5

11:00-21:34

1 stop15h 34m

£453

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Fri 23/5

20:45-17:50

1 stop16h 05m

Dublin

Thu 29/5

13:00-16:15

1 stop32h 15m

£499

Flights are sorted by cheapest return flights first.

Deals found on 29/4

Showing 1-10 of 17 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 25 April 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 44 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 May is currently the most expensive (average of £99). 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 April 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.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Dublin

Explore weekly flight availability from Dulles Intl to Dublin. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 29 April 2025.

The most flights from IAD to DUB are scheduled on a Monday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in Dublin by month

Plan your trip to Dublin by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Dublin ranges from 49.0 - 79.0 inches per month. October is typically the wettest month, when rainfall can reach 79.0 mm. February is typically the driest time to visit Dublin when rainfall is around 49.0 mm.

Temperature in Dublin by month

Plan your trip to Dublin by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Dublin, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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 29 April 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Dublin, such as Delta, KLM and Austrian Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very Good

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Crew

8.5

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines flying 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 £424. Additional return tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at £424 and £427, respectively. These flights start at 22% lower than the current average price 3 months from now.

  • 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 KLM (£350), British Airways (£356), and Delta (£364).

  • 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 SWISS (89%), Lufthansa (89%) or Air Canada (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 £536, our data indicates the cheapest price to be £369. The most popular route (Washington, D.C. Dulles Intl - Dublin), is priced around £458.

  • 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 May is currently the most expensive (average of £99). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Wicklow
Bray
Drogheda
Tullamore
Malahide
Athlone
Carlingford
Cavan
Kildare
Portmarnock
Mullingar
Enniscorthy
Dundalk
Arklow
Maynooth
Swords
Castleknock
Naas

Browse thousands of different options on Cheapflights for your next trip

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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 29 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£356Average£635FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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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?

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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!

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