Ireland

$253+ Cheap flights from Dulles Intl (IAD) to Ireland

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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — DUB
Nov 15 — Nov 221
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Cheap flight deals from Dulles Intl to Ireland

Keep the following information in mind while searching for Dulles Intl to Ireland flight deals. Data was last updated October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$480
(oojo)

One-way from

$253
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$609

Good round-trip deal

$617 or less

Good one-way deal

$444 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Dublin flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Dublin flights.
From Washington, D.C. Dulles Intl to Ireland
One-way flight from Washington, D.C. Dulles Intl to Ireland
Highest demand for flights based on searches. 11% potential increase in price ($90 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
Average for round-trip flights in October 2025
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Ireland.
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Ireland.

Find flight deals from Dulles Intl to Ireland

Cheapest flights from Dulles Intl to Ireland
Explore the most affordable flight options available from Dulles Intl to Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

This Mytrip deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/310:55 pmIAD - DUB
1 stop13h 15mLufthansa
Tue 11/115:00 amDUB - IAD
1 stop15h 50mLufthansa
Deal found 10/16$480
This Mytrip deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/35:05 pmIAD - DUB
Nonstop6h 50mAer Lingus
Tue 11/1112:15 pmDUB - IAD
Nonstop8h 20mAer Lingus
Deal found 10/15$481
This United deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/268:45 amIAD - DUB
1 stop18h 45mMultiple Airlines
Tue 11/45:00 amDUB - IAD
1 stop15h 50mMultiple Airlines
Deal found 10/15$482
This United Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2610:20 pmIAD - DUB
Nonstop7h 00mUnited Airlines
Fri 12/59:00 amDUB - IAD
2 stops17h 22mUnited Airlines
Deal found 10/14$483
This Booking.com deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/115:05 pmIAD - DUB
Nonstop6h 50mAer Lingus
Thu 11/204:20 pmDUB - IAD
Nonstop8h 10mAer Lingus
Deal found 10/16$484
This American Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:20 pmIAD - DUB
1 stop18h 25mAmerican Airlines
Wed 11/1210:00 amDUB - IAD
1 stop14h 55mAmerican Airlines
Deal found 10/15$486
This United deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/258:45 amIAD - DUB
1 stop17h 45mMultiple Airlines
Wed 12/109:00 amDUB - IAD
2 stops17h 22mMultiple Airlines
Deal found 10/14$487
This United Airlines deal was found by Cheapflights users on 10/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/3010:20 pmIAD - DUB
Nonstop7h 00mUnited Airlines
Tue 12/912:05 pmDUB - IAD
Nonstop8h 15mUnited Airlines
Deal found 10/15$488
This Priceline deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/259:45 amIAD - DUB
2 stops16h 25mAir Canada
Wed 12/109:00 amDUB - IAD
2 stops16h 59mAir Canada
Deal found 10/14$489
This Delta deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2810:25 pmIAD - DUB
1 stop13h 20mDelta
Tue 11/45:55 amDUB - IAD
1 stop15h 10mDelta
Deal found 10/16$490
This American Airlines deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/266:20 pmIAD - ORK
1 stop11h 50mAmerican Airlines
Wed 12/311:55 amORK - IAD
1 stop13h 00mAmerican Airlines
Deal found 10/14$490
This United Airlines deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/168:45 amIAD - DUB
1 stop17h 45mUnited Airlines
Tue 11/2512:05 pmDUB - IAD
Nonstop8h 15mUnited Airlines
Deal found 10/16$491

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Ireland 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 2,558,603 searches. Data last updated October 16, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Ireland that are best for you.

Fly from

Dulles Intl

Fly to

Ireland

Route

Depart

Return

Price

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 11/10

10:20 pm-10:20 am

Nonstop7h 00m

Dublin

Tue 11/18

5:00 am-3:50 pm

1 stop15h 50m

$482

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Mon 10/27

11:20 pm-10:20 am

Nonstop7h 00m

Dublin

Fri 11/7

9:00 am-3:46 pm

1 stop11h 46m

$483

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 11/25

10:20 pm-10:20 am

Nonstop7h 00m

Dublin

Wed 12/10

9:00 am-3:46 pm

1 stop11h 46m

$483

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Sun 11/30

10:20 pm-10:20 am

Nonstop7h 00m

Dublin

Thu 12/11

12:05 pm-3:20 pm

Nonstop8h 15m

$488

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 11/26

10:20 pm-10:20 am

Nonstop7h 00m

Dublin

Fri 12/5

12:05 pm-3:20 pm

Nonstop8h 15m

$488

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Tue 12/2

10:20 pm-10:20 am

Nonstop7h 00m

Dublin

Wed 12/10

12:05 pm-3:20 pm

Nonstop8h 15m

$488

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 11/26

10:20 pm-10:20 am

Nonstop7h 00m

Dublin

Thu 12/4

12:05 pm-3:20 pm

Nonstop8h 15m

$488

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Sun 10/26

11:20 pm-10:20 am

Nonstop7h 00m

Dublin

Tue 11/4

9:30 am-10:58 pm

1 stop18h 28m

$494

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Wed 12/3

7:21 pm-3:45 pm

2 stops15h 24m

Dublin

Tue 12/9

8:50 am-4:05 pm

1 stop12h 15m

$495

Washington, D.C.Dublin

IAD - DUB

IADDUB

Washington, D.C. Dulles Intl

Sun 2/15

5:45 pm-12:30 pm

1 stop13h 45m

Dublin

Tue 2/24

12:05 pm-3:20 pm

Nonstop8h 15m

$497

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Showing 1-10 of 51 results
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Best time to book a flight from Dulles Intl to Ireland

Have a flexible travel schedule? Discover the best time to fly to Ireland from Dulles Intl with our price prediction graph.
Estimated round-trip 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 Ireland

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

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ireland (average of $371). Flying from Washington, D.C. Dulles Intl Airport to Ireland in June is currently the most expensive (average of $532). 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 IE?

Find hourly flight availability from Dulles Intl to Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 16, 2025.

It’s optimal to fly from Washington, D.C. Dulles Intl Airport to Ireland in the evening. By choosing this option you can save up to 21% on the cost of your flight, compared to a flight in the morning.

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

Explore weekly flight availability from Dulles Intl to Ireland. 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 October 16, 2025.

The most flights from IAD to IE0 are scheduled on a Monday (15 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).

Reviews of airlines servicing Ireland

Get insights into the airlines that provide service to Ireland. 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 Ireland. Reviews last updated October 16, 2025.
Read through reviews of airlines operating flights from Washington, D.C. Dulles Intl Airport to Ireland, such as United Airlines, American Airlines, and Aer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.1

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Crew

8.1

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Crew

8.1

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Crew

8.1

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Crew

8.1

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
PLAY
7.0
Good

Crew

8.1

Boarding

7.7

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Ireland. 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 Washington, D.C. Dulles Intl Airport to Ireland?

    Airlines like United Airlines, Delta, and American Airlines fly from Washington, D.C. Dulles Intl Airport to Ireland in about 7h. The time it takes to get you to your destination can typically vary by up to 10h 40m. The distance from Washington, D.C. Dulles Intl Airport to Ireland is about 3393 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to Ireland?

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Dulles Intl Airport to Ireland on time: American Airlines (83%), Aer Lingus (83%), Iberia (83%).

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

    Looking for the cheapest flight from Washington, D.C. Dulles Intl Airport to Ireland? While on average our users pay $1,068, our data indicates the cheapest price to be $383. The most popular route (Washington, D.C. Dulles Intl - Dublin), is priced around $387.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Ireland 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 Ireland?

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Ireland (average of $371). Flying from Washington, D.C. Dulles Intl Airport to Ireland in June is currently the most expensive (average of $532). 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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Alternative routes for Dulles Intl to Ireland

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Dulles Intl to Ireland

Discover the top 10 airlines that operate flights from Dulles Intl to Ireland. 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 2,558,603 searches. Data last updated October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$157Average$795FlexibilityNo cancel feeOn-timeN/A
PLAYCheapest$316Average$498FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$371Average$625FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$427Average$578FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$435Average$875FlexibilityNo cancel feeOn-time71%
Scandinavian AirlinesCheapest$456Average$496FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$469Average$681FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$484Average$792FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$529Average$770FlexibilityNo cancel feeOn-time69%
KLMCheapest$643Average$645FlexibilityNo cancel feeOn-time75%

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