How long is the flight from Ireland to Washington, D.C. Dulles Intl Airport?

For as low as £338, Icelandair can have you in Washington, D.C. Dulles Intl Airport from Ireland in 12h. Airlines will cover a distance of 3393 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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.

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).

What are the cheapest flights from Ireland to Washington, D.C. Dulles Intl Airport?

On average you can expect to pay £501 for a flight from Ireland to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is £189 while the most popular route, (Dublin - Washington, D.C. Dulles Intl) is currently priced at £368.

What are the most reliable airlines from Ireland to Washington, D.C. Dulles Intl Airport?

Before booking your flight to Washington, D.C. Dulles Intl Airport from Ireland, check out the most reliable airlines to get you to your destination on time: SWISS (100%), Air Canada (89%), United Airlines( 89%).

What are the most popular airlines that fly from Ireland to Washington, D.C. Dulles Intl Airport?

Consider Aer Lingus, United Airlines or Icelandair when booking your flight. These represent the most popular airlines when flying from Ireland to Washington, D.C. Dulles Intl Airport.

Can I find deals for flights from Ireland to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Ireland to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Ireland to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to Dulles Intl.

Can I find deals for business class flights from Ireland to Dulles Intl?

Yes. Cheapflights offers flight deals from Ireland to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£338+ Flights from Ireland to Washington, D.C. Dulles Intl Airport

Cheap flight deals from Ireland to Dulles Intl

Enter your travel dates to find the best prices.

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 11 December 2025.

Thu 11/1212:15DUB - IAD

Nonstop8h 20mAer Lingus

Sun 14/1217:05IAD - DUB

Nonstop6h 50mAer Lingus

Deal found 9/12£365

Fri 26/1210:50DUB - IAD

1 stop14h 15mLufthansa

Thu 1/122:20IAD - DUB

Nonstop7h 00mLufthansa

Deal found 10/12£521

Fri 26/1210:40DUB - IAD

1 stop11h 50mUnited Airlines

Thu 1/122:20IAD - DUB

Nonstop7h 00mUnited Airlines

Deal found 10/12£532

Fri 12/1205:55DUB - IAD

1 stop15h 10mKLM

Sun 14/1215:38IAD - DUB

1 stop11h 07mKLM

Deal found 9/12£534

Thu 11/1211:30DUB - IAD

1 stop12h 00mIcelandair

Thu 8/119:40IAD - DUB

1 stop9h 35mIcelandair

Deal found 9/12£537

Fri 12/1212:05DUB - IAD

Nonstop8h 15mUnited Airlines

Sun 14/1222:20IAD - DUB

Nonstop7h 00mUnited Airlines

Deal found 9/12£542

Fri 26/1210:50DUB - IAD

1 stop14h 15mLufthansa

Sun 4/122:20IAD - DUB

Nonstop7h 00mLufthansa

Deal found 10/12£544

Tue 23/1212:05DUB - IAD

Nonstop8h 15mUnited Airlines

Fri 2/122:20IAD - DUB

Nonstop7h 00mUnited Airlines

Deal found 9/12£557

Sat 20/1212:05DUB - IAD

Nonstop8h 15mUnited Airlines

Fri 2/108:15IAD - DUB

1 stop18h 55mUnited Airlines

Deal found 10/12£560

Fri 26/1210:40DUB - IAD

1 stop11h 50mUnited Airlines

Sat 3/122:20IAD - DUB

Nonstop7h 00mUnited Airlines

Deal found 9/12£562

Sun 21/1210:40DUB - IAD

1 stop15h 41mUnited Airlines

Tue 30/1222:20IAD - DUB

Nonstop7h 00mUnited Airlines

Deal found 10/12£565

Best flights from Ireland to Dulles Intl
Discover carefully curated flight deals from Ireland to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 11 December 2025.

Thu 15/111:30DUB - IAD

1 stop12h 00mIcelandair

Mon 19/119:40IAD - DUB

1 stop9h 35mIcelandair

Deal found 8/12£338

Wed 11/219:05DUB - IAD

1 stop27h 10mScandinavian Airlines

Thu 19/220:30IAD - DUB

1 stop31h 55mScandinavian Airlines

Deal found 9/12£340

Sat 14/220:40DUB - IAD

1 stop23h 55mBritish Airways

Sun 22/218:20IAD - DUB

1 stop15h 45mBritish Airways

Deal found 9/12£365

Fri 13/219:05DUB - IAD

1 stop28h 45mScandinavian Airlines

Wed 18/220:30IAD - DUB

1 stop34h 15mScandinavian Airlines

Deal found 9/12£340

Wed 11/219:05DUB - IAD

1 stop27h 10mScandinavian Airlines

Mon 16/220:30IAD - DUB

1 stop16h 50mScandinavian Airlines

Deal found 9/12£340

Tue 10/211:30DUB - IAD

2 stops58h 45mScandinavian Airlines

Thu 19/220:30IAD - DUB

1 stop16h 50mScandinavian Airlines

Deal found 9/12£346

Tue 10/211:30DUB - IAD

2 stops58h 45mScandinavian Airlines

Mon 16/220:30IAD - DUB

2 stops33h 15mScandinavian Airlines

Deal found 9/12£351

Sat 14/210:10DUB - IAD

1 stop13h 40mScandinavian Airlines

Sat 21/220:30IAD - DUB

1 stop16h 50mScandinavian Airlines

Deal found 9/12£353

Wed 11/219:05DUB - IAD

1 stop27h 10mScandinavian Airlines

Sat 21/220:30IAD - DUB

1 stop16h 50mScandinavian Airlines

Deal found 9/12£353

Direct flights from Ireland to Dulles Intl
Explore direct flight options from Ireland to Dulles Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 11 December 2025.

Tue 20/112:15DUB - IAD

Nonstop8h 20mAer Lingus

Sat 24/117:05IAD - DUB

Nonstop6h 50mAer Lingus

Deal found 9/12£355

Fri 6/316:20DUB - IAD

Nonstop8h 10mAer Lingus

Mon 9/318:05IAD - DUB

Nonstop6h 50mAer Lingus

Deal found 9/12£375

Thu 12/212:15DUB - IAD

Nonstop8h 20mAer Lingus

Thu 19/217:05IAD - DUB

Nonstop6h 50mAer Lingus

Deal found 9/12£380

Mon 12/112:15DUB - IAD

Nonstop8h 20mIberia

Tue 20/117:05IAD - DUB

Nonstop6h 50mIberia

Deal found 8/12£486

Wed 4/312:15DUB - IAD

Nonstop8h 20mAmerican Airlines

Wed 11/322:00IAD - DUB

Nonstop6h 50mAmerican Airlines

Deal found 9/12£497

Wed 22/416:35DUB - IAD

Nonstop7h 55mAmerican Airlines

Sat 2/520:25IAD - DUB

Nonstop6h 50mAmerican Airlines

Deal found 9/12£500

Wed 22/408:50DUB - IAD

Nonstop8h 00mUnited Airlines

Sat 2/522:25IAD - DUB

Nonstop7h 15mUnited Airlines

Deal found 10/12£531

Tue 23/1212:05DUB - IAD

Nonstop8h 15mUnited Airlines

Fri 2/122:20IAD - DUB

Nonstop7h 00mUnited Airlines

Deal found 9/12£557

Sat 20/1212:05DUB - IAD

Nonstop8h 15mUnited Airlines

Fri 2/122:20IAD - DUB

Nonstop7h 00mUnited Airlines

Deal found 9/12£587

Sun 21/1212:05DUB - IAD

Nonstop8h 15mUnited Airlines

Tue 30/1222:20IAD - DUB

Nonstop7h 00mUnited Airlines

Deal found 9/12£590

Fri 20/212:05DUB - IAD

Nonstop8h 15mUnited Airlines

Fri 13/323:20IAD - DUB

Nonstop7h 00mUnited Airlines

Deal found 10/12£626

Last-minute flights from Ireland to Dulles Intl
Discover last-minute flight deals from Ireland to Dulles Intl. Data last updated 11 December 2025 and is based on user searches.

Sun 11/113:25DUB - IAD

1 stop31h 40mKLM

Sun 18/117:26IAD - DUB

2 stops14h 14mKLM

Deal found 9/12£389

Mon 12/120:40DUB - IAD

1 stop23h 55mBritish Airways

Mon 19/118:20IAD - DUB

1 stop13h 15mBritish Airways

Deal found 9/12£365

Mon 12/108:50DUB - IAD

1 stop12h 15mKLM

Tue 20/118:05IAD - DUB

1 stop17h 15mKLM

Deal found 8/12£381

Mon 12/108:50DUB - IAD

1 stop12h 15mDelta

Wed 21/112:23IAD - DUB

2 stops14h 27mDelta

Deal found 10/12£383

Mon 12/105:55DUB - IAD

1 stop15h 10mDelta

Tue 20/112:23IAD - DUB

2 stops14h 27mDelta

Deal found 8/12£384

Mon 12/111:30DUB - IAD

2 stops16h 42mBritish Airways

Tue 20/113:08IAD - DUB

2 stops14h 32mBritish Airways

Deal found 8/12£385

Mon 12/105:55DUB - IAD

2 stops18h 14mDelta

Mon 19/112:23IAD - DUB

2 stops14h 37mDelta

Deal found 9/12£388

Thu 15/111:30DUB - IAD

1 stop12h 00mIcelandair

Mon 19/119:40IAD - DUB

1 stop9h 35mIcelandair

Deal found 8/12£338

Tue 20/112:30DUB - IAD

1 stop33h 45mScandinavian Airlines

Sat 24/120:30IAD - DUB

1 stop34h 15mScandinavian Airlines

Deal found 9/12£345

Tue 20/112:15DUB - IAD

Nonstop8h 20mAer Lingus

Sat 24/117:05IAD - DUB

Nonstop6h 50mAer Lingus

Deal found 9/12£355

One-way flights from Ireland to Dulles Intl
Search for one-way flight options from Ireland to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 11 December 2025.

Wed 11/216:55DUB - IAD

1 stop27h 20mTAP AIR PORTUGAL

Deal found 9/12£343

Wed 11/211:30DUB - IAD

2 stops16h 42mMultiple Airlines

Deal found 9/12£352

Sun 31/512:45DUB - IAD

1 stop12h 35mBritish Airways

Deal found 9/12£386

Fri 9/107:35DUB - IAD

2 stops30h 33mMultiple Airlines

Deal found 10/12£386

Sat 4/412:40DUB - IAD

1 stop12h 50mMultiple Airlines

Deal found 9/12£390

Wed 11/212:15DUB - IAD

Nonstop8h 20mAmerican Airlines

Deal found 10/12£434

Wed 11/210:20DUB - IAD

2 stops14h 35mBritish Airways

Deal found 10/12£452

Tue 6/118:05DUB - IAD

3 stops45h 14mMultiple Airlines

Deal found 9/12£459

Fri 9/111:30DUB - IAD

1 stop12h 00mIcelandair

Deal found 10/12£460

Fri 9/116:55DUB - IAD

1 stop27h 20mTAP AIR PORTUGAL

Deal found 10/12£465

Find flight deals from Ireland to Dulles Intl

Round-trip from	£338
Popular in	August
Cheapest in	February
Average price	£454
Good round-trip deal	£533 or less
Good one-way deal	£190 or less

Icelandair
15/1-19/1
2 total stops
21h 35m total
Ireland to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 13% potential increase in price (£49 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£12 potential savings vs. average return price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Price to beat on a round-trip flight from Ireland to Washington, D.C. Dulles Intl.

Search Deals

Price to beat on a one-way flight from Ireland to Washington, D.C. Dulles Intl.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ireland to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 15/1

11:30-18:30

1 stop12h 00m

Washington, D.C. Dulles Intl

Mon 19/1

19:40-10:15

1 stop9h 35m

£338

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 11/2

19:05-17:15

1 stop27h 10m

Washington, D.C. Dulles Intl

Thu 19/2

20:30-09:25

1 stop31h 55m

£340

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Fri 13/2

19:05-18:50

1 stop28h 45m

Washington, D.C. Dulles Intl

Wed 18/2

20:30-11:45

1 stop34h 15m

£340

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 11/2

19:05-17:15

1 stop27h 10m

Washington, D.C. Dulles Intl

Mon 16/2

20:30-18:20

1 stop16h 50m

£340

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 10/2

11:30-17:15

2 stops58h 45m

Washington, D.C. Dulles Intl

Thu 19/2

20:30-18:20

1 stop16h 50m

£346

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Tue 10/2

11:30-17:15

2 stops58h 45m

Washington, D.C. Dulles Intl

Mon 16/2

20:30-10:45

2 stops33h 15m

£351

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sat 14/2

10:10-18:50

1 stop13h 40m

Washington, D.C. Dulles Intl

Sat 21/2

20:30-18:20

1 stop16h 50m

£353

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 11/2

19:05-17:15

1 stop27h 10m

Washington, D.C. Dulles Intl

Sat 21/2

20:30-18:20

1 stop16h 50m

£353

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Sat 14/2

20:40-15:35

1 stop23h 55m

Washington, D.C. Dulles Intl

Sun 22/2

18:20-15:05

1 stop15h 45m

£365

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 11/2

16:55-15:15

1 stop27h 20m

£343

Flights are sorted by cheapest return flights first.

Deals found on 9/12

Showing 1-10 of 16 results

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.

Cheapflights Insights

Everything you need to know about your flight from Ireland to Washington, D.C. Dulles Intl Airport

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

Currently, December is the cheapest month in which you can book a flight from Ireland to Washington, D.C. Dulles Intl Airport (average of £275). Flying from Ireland to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £449). 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?

Unlike in the morning, when flights are generally more expensive, you can save up to 40% on flights from Ireland to Washington, D.C. Dulles Intl Airport by exploring options for tickets in the evening.

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

The most flights from IE0 to IAD are scheduled on a Monday (12 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (12 on average).

How often are flights from Ireland to Washington, D.C. delayed?

About 14% of weekly flights between Ireland and Washington, D.C. have experienced delays in the past year, with the average delay time being 152 minutes.

What is the most punctual flight time for Ireland to Washington, D.C. flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Sunday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ireland to Washington, D.C. flights?

Over the past year, Aer Lingus have had the lowest number of delays on this route, with just 14% of flights being delayed.

Reviews of airlines servicing Dulles Intl

Get a feel of what it's like to fly with United Airlines, Aer Lingus, andIcelandair from Ireland to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

9,095 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

United Airlines

7.4

Good

9,095 reviews

United Airlines

7.4

Good

9,095 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

Aer Lingus

7.2

Good

1,392 reviews

United Airlines

7.4

Good

9,095 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

Icelandair

7.0

Good

589 reviews

United Airlines

7.4

Good

9,095 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

Lufthansa

6.8

Okay

7,626 reviews

United Airlines

7.4

Good

9,095 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

British Airways

6.7

Okay

7,573 reviews

United Airlines

7.4

Good

9,095 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

Related info for your journey

How long is the flight from Ireland to Washington, D.C. Dulles Intl Airport?
For as low as £338, Icelandair can have you in Washington, D.C. Dulles Intl Airport from Ireland in 12h. Airlines will cover a distance of 3393 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the most reliable airlines from Ireland to Washington, D.C. Dulles Intl Airport?
Before booking your flight to Washington, D.C. Dulles Intl Airport from Ireland, check out the most reliable airlines to get you to your destination on time: SWISS (100%), Air Canada (89%), United Airlines( 89%).
What are the cheapest flights from Ireland to Washington, D.C. Dulles Intl Airport?
On average you can expect to pay £501 for a flight from Ireland to Washington, D.C. Dulles Intl Airport. The cheapest flight overall is £189 while the most popular route, (Dublin - Washington, D.C. Dulles Intl) is currently priced at £368.
Can I find deals for flights from Ireland to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Ireland to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Ireland to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to Dulles Intl.
Can I find deals for business class flights from Ireland to Dulles Intl?
Yes. Cheapflights offers flight deals from Ireland to Dulles Intl 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 Ireland to Washington, D.C. Dulles Intl Airport?
Currently, December is the cheapest month in which you can book a flight from Ireland to Washington, D.C. Dulles Intl Airport (average of £275). Flying from Ireland to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £449). 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

Silver Spring

Hanover

Oxon Hill

Woodbridge

Arlington

Alexandria

College Park

Browse thousands of different options on Cheapflights for your next trip

Top 5 airlines flying from Ireland to Dulles Intl

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£281	Average£336	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Lufthansa	Cheapest£298	Average£433	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
British Airways	Cheapest£312	Average£496	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
United Airlines	Cheapest£336	Average£543	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Aer Lingus	Cheapest£336	Average£447	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights

Fly with Cheapflights

How does Cheapflights help users find flights from Ireland to Dulles Intl?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Dulles Intl from Ireland today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Ireland to Dulles Intl?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ireland to Dulles Intl.

Can Cheapflights find flights from Ireland to Dulles Intl with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ireland to Dulles Intl, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Ireland to Dulles Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Dulles Intl from Ireland today and book when prices fit your budget.

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Cheap flights from Ireland to Washington, D.C. Dulles Intl Airport from £338

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ireland to Dulles Intl

Cheapest flights from Ireland to Dulles IntlExplore 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 11 December 2025.

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 11 December 2025.

Find 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 11 December 2025.

Round-trip from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ireland to Washington, D.C. Dulles Intl Airport that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from Ireland to Washington, D.C. Dulles Intl Airport

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

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 11 December 2025.

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

How often are flights from Ireland to Washington, D.C. delayed?

What is the most punctual flight time for Ireland to Washington, D.C. flights?

What day of the week experiences the fewest flight delays on this route?

Which airline has the best punctuality record on Ireland to Washington, D.C. flights?

Reviews of airlines servicing Dulles Intl

Get a feel of what it's like to fly with United Airlines, Aer Lingus, andIcelandair from Ireland to Washington, D.C. Dulles Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ireland to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Ireland to Washington, D.C. Dulles Intl Airport?

What are the most reliable airlines from Ireland to Washington, D.C. Dulles Intl Airport?

What are the cheapest flights from Ireland to Washington, D.C. Dulles Intl Airport?

Can I find deals for flights from Ireland to Dulles Intl that include hotel bookings?

How can I find direct flights from Ireland to Dulles Intl?

Can I find deals for business class flights from Ireland to Dulles Intl?

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

Travelling to a place near Washington, D.C. Dulles Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ireland to Dulles Intl

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Top 5 airlines flying from Ireland to Dulles Intl

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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 11 December 2025.