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Cheap flights from Ireland to Washington, D.C. Dulles Intl Airport from £323

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/3. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — IAD
19 Feb — 26 Feb1
1 adult

Cheap flight deals from Ireland to Dulles Intl

Keep the following information in mind while searching for Ireland to Dulles Intl flight deals. Data was last updated 14 February 2025.

Round-trip from

£323

Popular in

July

Cheapest in

January

Average price

£393

Good round-trip deal

£485 or less

Good one-way deal

£382 or less
Icelandair
  • Icelandair
  • 4/3-10/3
  • 2 total stops
  • 21h 30m total
  • Ireland to Washington, D.C.
Highest demand for flights based on searches. 21% potential increase in price (£95 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£12 potential savings vs. average return price).
Average for round-trip flights in February 2025
Price to beat on a round-trip flight from Ireland to Washington, D.C. Dulles Intl.
Price to beat on a one-way flight from Ireland to Washington, D.C. Dulles Intl.

Find flight deals from Ireland to Dulles Intl

Cheapest flights from Ireland to Dulles Intl
Explore the most affordable flight options available from Ireland to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 February 2025.

Tue 4/311:30DUB - IAD
1 stop11h 55mIcelandair
Mon 10/320:40IAD - DUB
1 stop9h 35mIcelandair
Deal found 13/2£323
Thu 18/919:05DUB - IAD
1 stop29h 54mScandinavian Airlines
Wed 24/922:05IAD - DUB
1 stop32h 45mScandinavian Airlines
Deal found 13/2£350
Tue 4/316:40DUB - IAD
Nonstop8h 05mAer Lingus
Mon 10/321:45IAD - DUB
Nonstop6h 45mAer Lingus
Deal found 13/2£389
Tue 4/305:55DUB - IAD
1 stop14h 50mDelta
Thu 20/322:30IAD - DUB
1 stop13h 10mDelta
Deal found 13/2£393
Wed 26/205:55DUB - IAD
1 stop14h 50mKLM
Wed 5/317:35IAD - DUB
1 stop14h 05mKLM
Deal found 12/2£394
Wed 19/209:00DUB - IAD
1 stop17h 23mUnited Airlines
Wed 26/222:05IAD - DUB
Nonstop7h 00mUnited Airlines
Deal found 12/2£436
Tue 4/305:00DUB - IAD
1 stop15h 50mLufthansa
Mon 10/323:05IAD - DUB
Nonstop7h 00mLufthansa
Deal found 13/2£439
Mon 10/311:50DUB - IAD
Nonstop8h 20mMultiple Airlines
Wed 26/317:30IAD - DUB
1 stop14h 35mMultiple Airlines
Deal found 12/2£470
Sun 30/313:00DUB - IAD
1 stop32h 15mSWISS
Sun 6/420:45IAD - DUB
1 stop34h 25mSWISS
Deal found 13/2£493
Sun 30/309:20DUB - IAD
2 stops34h 06mAustrian Airlines
Sun 6/417:25IAD - DUB
2 stops42h 25mAustrian Airlines
Deal found 13/2£559
Thu 24/710:40DUB - IAD
1 stop11h 55mBritish Airways
Tue 29/719:25IAD - DUB
1 stop11h 30mBritish Airways
Deal found 13/2£568
Wed 19/204:25DUB - IAD
2 stops31h 52mTAP AIR PORTUGAL
Wed 26/217:47IAD - DUB
2 stops24h 33mTAP AIR PORTUGAL
Deal found 13/2£993

Find flights from Ireland to Dulles Intl within your budget

Customise your flight search to find flights from Ireland to Dulles Intl 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 14 February 2025.

Fly from

Ireland

Fly to

Dulles Intl

Route

Depart

Return

Price

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 4/3

11:30-18:25

1 stop11h 55m

Washington, D.C. Dulles Intl

Mon 10/3

20:40-10:15

1 stop9h 35m

£323

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 4/3

11:15-15:40

2 stops33h 25m

Washington, D.C. Dulles Intl

Mon 10/3

18:10-11:40

1 stop13h 30m

£351

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 4/3

16:40-19:45

Nonstop8h 05m

Washington, D.C. Dulles Intl

Mon 10/3

21:45-08:30

Nonstop6h 45m

£389

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 4/3

05:55-15:45

1 stop14h 50m

Washington, D.C. Dulles Intl

Tue 11/3

22:30-15:40

1 stop13h 10m

£393

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 26/2

05:55-15:45

1 stop14h 50m

Washington, D.C. Dulles Intl

Wed 5/3

17:35-12:40

1 stop14h 05m

£394

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 19/2

09:00-21:23

1 stop17h 23m

Washington, D.C. Dulles Intl

Wed 26/2

22:05-10:05

Nonstop7h 00m

£436

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 4/3

05:00-15:50

1 stop15h 50m

Washington, D.C. Dulles Intl

Mon 10/3

23:05-10:05

Nonstop7h 00m

£439

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Mon 10/3

11:50-16:10

Nonstop8h 20m

Washington, D.C. Dulles Intl

Wed 26/3

17:30-12:05

1 stop14h 35m

£470

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sun 30/3

13:00-16:15

1 stop32h 15m

Washington, D.C. Dulles Intl

Sun 6/4

20:45-12:10

1 stop34h 25m

£493

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sun 30/3

09:20-14:26

2 stops34h 06m

Washington, D.C. Dulles Intl

Sun 6/4

17:25-16:50

2 stops42h 25m

£559

Flights are sorted by cheapest return flights first.

Deals found on 13/2

Showing 1-10 of 15 results
1
2

Best time to book a flight from Ireland to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Ireland 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.

Travel insights for flights from Ireland to Dulles Intl

Get recent, data-driven insights about flights from Ireland to Dulles Intl including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Ireland to Washington, D.C. Dulles Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Ireland to Washington, D.C. Dulles Intl Airport (average of £599). Flying from Ireland to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £947). 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 IE to IAD?

Find hourly flight availability from Ireland to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 February 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 19% on flights from Ireland to Washington, D.C. Dulles Intl Airport by exploring options for tickets at midday.

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

Explore weekly flight availability from Ireland to Dulles Intl. 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 14 February 2025.

The most flights from IE0 to IAD are scheduled on a Monday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Dulles Intl by month

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

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 66.0 mm.

Temperature in Dulles Intl by month

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

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, 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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated 14 February 2025.
Read through reviews of airlines operating flights from Ireland to Washington, D.C., such as Delta, KLM and Austrian Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

8.0
Very Good

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall

8.0

Comfort

8.0

Food

7.3

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Crew

8.5

Boarding

8.2

Entertainment

7.9

Overall