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Cheap flights from Washington, D.C. Dulles Intl Airport to Dublin from £280

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 14/7. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — DUB
18 Jun — 25 Jun1
1 adult

Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Dublin are usually found in January or March, booked 37 days in advance, depart on a Sunday or Wednesday 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 13 June 2025.

Round-trip from

£355

One-way from

£280

Popular in

June

Cheapest in

January

Average price

£670

Good round-trip deal

£554 or less

Good one-way deal

£399 or less
United Airlines
  • United Airlines
  • 9/8-22/8
  • 1 total stop
  • 38h 26m total
  • Washington, D.C. to Dublin
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 14/7
  • 1 total stop
  • 30h 40m total
  • Washington, D.C. to Dublin
Highest demand for flights based on searches. 15% potential increase in price (£68 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Average for round-trip flights in June 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 13 June 2025.

Sat 9/822:19IAD - DUB
1 stop30h 26mUnited Airlines
Fri 22/808:50DUB - IAD
Nonstop8h 00mUnited Airlines
Deal found 13/6£355
Mon 6/1022:05IAD - DUB
1 stop15h 10mScandinavian Airlines
Sun 12/1019:15DUB - IAD
2 stops29h 44mScandinavian Airlines
Deal found 11/6£358
Tue 28/1021:45IAD - DUB
1 stop16h 00mMultiple Airlines
Tue 4/1105:00DUB - IAD
1 stop15h 50mMultiple Airlines
Deal found 13/6£359
Sun 27/717:23IAD - DUB
1 stop11h 37mKLM
Tue 5/810:00DUB - IAD
1 stop11h 43mKLM
Deal found 13/6£384
Wed 23/717:23IAD - DUB
1 stop11h 37mDelta
Thu 31/712:00DUB - IAD
1 stop16h 25mDelta
Deal found 13/6£387
Sun 10/820:45IAD - DUB
1 stop34h 25mSWISS
Sun 17/819:50DUB - IAD
2 stops49h 25mSWISS
Deal found 12/6£397
Wed 6/822:20IAD - DUB
1 stop20h 45mTAP AIR PORTUGAL
Tue 9/918:50DUB - IAD
1 stop25h 30mTAP AIR PORTUGAL
Deal found 11/6£406
Wed 6/822:40IAD - DUB
1 stop13h 50mBritish Airways
Mon 11/820:55DUB - IAD
1 stop28h 15mBritish Airways
Deal found 12/6£408
Mon 15/922:20IAD - DUB
1 stop13h 35mLufthansa
Mon 29/917:45DUB - IAD
2 stops24h 45mLufthansa
Deal found 11/6£444

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 13 June 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

Sat 9/8

22:19-09:45

1 stop30h 26m

Dublin

Fri 22/8

08:50-11:50

Nonstop8h 00m

£355

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 6/10

22:05-18:15

1 stop15h 10m

Dublin

Sun 12/10

19:15-19:59

2 stops29h 44m

£358

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 28/10

21:45-17:45

1 stop16h 00m

Dublin

Tue 4/11

05:00-15:50

1 stop15h 50m

£359

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Sun 27/7

17:23-10:00

1 stop11h 37m

Dublin

Tue 5/8

10:00-16:43

1 stop11h 43m

£384

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 23/7

17:23-10:00

1 stop11h 37m

Dublin

Thu 31/7

12:00-23:25

1 stop16h 25m

£387

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Sun 10/8

20:45-12:10

1 stop34h 25m

Dublin

Sun 17/8

19:50-16:15

2 stops49h 25m

£397

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 6/8

22:20-00:05

1 stop20h 45m

Dublin

Tue 9/9

18:50-15:20

1 stop25h 30m

£406

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 6/8

22:40-17:30

1 stop13h 50m

Dublin

Thu 14/8

12:45-20:10

1 stop12h 25m

£408

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 15/9

22:20-16:55

1 stop13h 35m

Dublin

Mon 29/9

17:45-13:30

2 stops24h 45m

£444

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 14/7

22:20-10:00

1 stop30h 40m

£280

Flights are sorted by cheapest return flights first.

Deals found on 10/6

Showing 1-10 of 15 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 9 June 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 37 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 £94). 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 13 June 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 7% 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 13 June 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 13 June 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Dublin, such as Delta, KLM and SWISS. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very Good

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Food

7.3

Entertainment

7.9

Boarding

8.2

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 United Airlines is currently your cheapest option to Dublin, with prices starting at £355. Additional return tickets that might be worth considering are offered by Scandinavian Airlines and KLM, with the lowest prices starting at £358 and £384, respectively. These flights start at 32% 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 TAP AIR PORTUGAL (£280), WestJet (£283), and United Airlines (£290).

  • 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 (82%), Lufthansa (82%) or Air Canada (74%) 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 £571, our data indicates the cheapest price to be £399. The most popular route (Washington, D.C. Dulles Intl - Dublin), is priced around £403.

  • 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 £94). 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
Athlone
Bray
Tullamore
Malahide
Cavan
Drogheda
Portmarnock
Enniscorthy
Mullingar
Dundalk
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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£352Average£627FlexibilityNo 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.

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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