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

Icelandair, American Airlines, and British Airways can get you from Ireland to Washington, D.C. in just under 12h 10m. Your travel time can differ by up to 1h 14m. There are 3351 mi between Ireland and Washington, D.C.. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines to fly from Ireland to Washington, D.C. one-way?

$477 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $611 and $1,079, respectively.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C., 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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular routes from Ireland to Washington, D.C.?

When deciding which route to take from Ireland to Washington, D.C. consider Dublin - Washington, D.C. Dulles Intl, Dublin - Washington, D.C. Reagan-National or Dublin - Baltimore/Washington as they are the most popular.

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

On average you can expect to pay $1,369 for a flight from Ireland to Washington, D.C.. The cheapest flight overall is $415 while the most popular route, (Dublin - Washington, D.C. Dulles Intl) is currently priced at $457.

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

Consider Qatar Airways (89%), American Airlines (83%) or Aer Lingus (83%) when booking your flight. These represent the most reliable airlines when flying from Ireland to Washington, D.C..

Can I find deals for flights from Ireland to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on Ireland to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ireland to Washington, D.C.?

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

Can I find deals for business class flights from Ireland to Washington, D.C.?

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

$241+ Cheap Flights from Ireland to Washington, D.C.

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Cheap flight deals from Ireland to Washington, D.C.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Ireland to Washington, D.C.
Explore the most affordable flight options available from Ireland to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.

Sat 11/711:30 am -

1 stop12h 10m

Sat 11/147:40 pm -

1 stop9h 35m

Deal found 8/9

$504

Wed 9/212:15 pm -

1 stop15h 00m

Tue 9/228:30 pm -

1 stop9h 35m

Deal found 8/8

$551

Tue 9/12:15 pm -

1 stop10h 05m

Mon 9/78:30 pm -

1 stop11h 45m

Deal found 8/7

$552

Sat 8/292:15 pm -

1 stop13h 00m

Mon 9/78:30 pm -

1 stop11h 45m

Deal found 8/10

$554

Thu 9/102:15 pm -

1 stop10h 05m

Mon 9/148:30 pm -

1 stop11h 45m

Deal found 8/9

$556

Thu 9/32:15 pm -

1 stop10h 05m

Tue 9/88:30 pm -

1 stop9h 35m

Deal found 8/10

$559

Tue 9/81:45 pm -

1 stop12h 28m

Tue 9/153:12 pm -

1 stop13h 23m

Deal found 8/9

$563

Tue 9/89:30 am -

1 stop13h 24m

Mon 9/142:54 pm -

1 stop13h 41m

Deal found 8/9

$563

Tue 9/811:45 am -

1 stop14h 11m

Mon 9/146:15 pm -

1 stop10h 20m

Deal found 8/9

$563

Tue 10/202:15 pm -

1 stop10h 05m

Tue 11/107:40 pm -

1 stop9h 35m

Deal found 8/7

$570

Fri 10/1612:15 pm -

1 stop12h 05m

Tue 10/208:30 pm -

1 stop9h 35m

Deal found 8/10

$578

Tue 9/812:50 pm -

1 stop12h 30m

Sat 9/129:30 pm -

1 stop13h 50m

Deal found 8/9

$581

Best flights from Ireland to Washington, D.C.
Discover carefully curated flight deals from Ireland to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 11, 2026.

Thu 9/32:15 pm -

1 stop10h 05m

Mon 9/78:30 pm -

1 stop11h 45m

Deal found 8/10

$592

Sat 12/58:55 am -

1 stop13h 10m

Tue 12/85:12 pm -

2 stops21h 28m

Deal found 8/10

$594

Tue 10/208:55 am -

1 stop11h 40m

Tue 11/1012:35 pm -

2 stops15h 25m

Deal found 8/8

$613

Sun 9/206:15 am -

1 stop14h 20m

Sun 9/275:30 pm -

1 stop11h 50m

Deal found 8/6

$615

Wed 10/2110:30 am -

1 stop14h 10m

Wed 11/46:55 pm -

1 stop12h 20m

Deal found 8/7

$616

Sun 11/110:45 am -

1 stop11h 20m

Fri 11/131:35 pm -

2 stops13h 55m

Deal found 8/10

$641

Thu 9/31:05 pm -

2 stops16h 29m

Mon 9/712:29 pm -

1 stop17h 41m

Deal found 8/9

$730

Thu 9/39:30 am -

1 stop11h 32m

Mon 9/75:45 pm -

1 stop11h 30m

Deal found 8/7

$829

Thu 10/1511:25 am -

2 stops15h 25m

Fri 10/236:55 pm -

2 stops15h 15m

Deal found 8/10

$1,035

Sun 10/115:55 am -

1 stop14h 40m

Mon 10/196:15 pm -

1 stop16h 10m

Deal found 8/10

$613

Wed 10/2112:50 pm -

1 stop11h 50m

Wed 11/46:55 pm -

1 stop32h 00m

Deal found 8/6

$616

Tue 10/205:55 am -

1 stop14h 40m

Tue 11/36:32 pm -

2 stops13h 08m

Deal found 8/7

$617

Sat 9/56:15 am -

1 stop14h 20m

Sat 9/1212:18 pm -

2 stops17h 02m

Deal found 8/8

$615

Wed 10/2110:30 am -

1 stop11h 55m

Wed 11/46:05 pm -

1 stop10h 35m

Deal found 8/6

$616

Thu 9/2410:50 am -

2 stops17h 11m

Thu 10/112:02 pm -

2 stops21h 38m

Deal found 8/10

$727

Fri 10/235:55 am -

1 stop14h 40m

Fri 11/68:03 am -

1 stop18h 42m

Deal found 8/6

$616

Tue 10/208:25 pm -

1 stop28h 15m

Tue 11/106:55 pm -

1 stop12h 15m

Deal found 8/7

$617

Fri 1/152:45 pm -

2 stops32h 06m

Mon 1/189:17 am -

2 stops16h 03m

Deal found 8/6

$783

Thu 9/31:05 pm -

2 stops36h 50m

Mon 9/712:29 pm -

1 stop17h 41m

Deal found 8/6

$729

Tue 9/158:55 am -

1 stop11h 40m

Mon 9/216:26 pm -

1 stop10h 34m

Deal found 8/10

$616

Tue 10/2012:50 pm -

1 stop11h 50m

Tue 11/36:55 pm -

1 stop17h 00m

Deal found 8/10

$618

Fri 9/49:30 am -

1 stop13h 07m

Mon 9/71:10 pm -

1 stop13h 20m

Deal found 8/7

$829

Thu 9/39:15 pm -

2 stops23h 23m

Mon 9/78:40 pm -

2 stops18h 55m

Deal found 8/6

$782

Thu 9/35:55 am -

1 stop14h 40m

Tue 9/812:25 pm -

2 stops17h 00m

Deal found 8/7

$617

Thu 9/311:10 am -

2 stops16h 49m

Wed 9/1612:55 pm -

2 stops14h 20m

Deal found 8/8

$618

Wed 10/215:55 am -

2 stops16h 38m

Wed 11/49:30 pm -

1 stop12h 00m

Deal found 8/8

$618

Fri 1/155:30 pm -

1 stop28h 35m

Mon 1/186:55 pm -

1 stop19h 30m

Deal found 8/6

$768

Fri 9/41:25 pm -

2 stops14h 34m

Fri 9/115:05 pm -

1 stop11h 55m

Deal found 8/7

$621

Fri 1/157:40 am -

1 stop13h 00m

Mon 1/1811:34 am -

2 stops22h 51m

Deal found 8/10

$769

Mon 10/125:55 am -

2 stops15h 42m

Mon 10/1912:27 pm -

2 stops16h 33m

Deal found 8/6

$621

Last-minute flights from Ireland to Washington, D.C.
Discover last-minute flight deals from Ireland to Washington, D.C.. Data last updated August 11, 2026 and is based on user searches.

Sat 8/292:15 pm -

1 stop13h 00m

Mon 9/78:30 pm -

1 stop11h 45m

Deal found 8/10

$554

Tue 9/12:15 pm -

1 stop10h 05m

Mon 9/78:30 pm -

1 stop11h 45m

Deal found 8/7

$552

Wed 9/212:15 pm -

1 stop15h 00m

Tue 9/228:30 pm -

1 stop9h 35m

Deal found 8/8

$551

Thu 9/32:15 pm -

1 stop10h 05m

Tue 9/88:30 pm -

1 stop9h 35m

Deal found 8/10

$559

Tue 9/81:45 pm -

1 stop12h 28m

Tue 9/153:12 pm -

1 stop13h 23m

Deal found 8/9

$563

Tue 9/89:30 am -

1 stop13h 24m

Mon 9/142:54 pm -

1 stop13h 41m

Deal found 8/9

$563

Tue 9/811:45 am -

1 stop14h 11m

Mon 9/146:15 pm -

1 stop10h 20m

Deal found 8/9

$563

Tue 9/812:50 pm -

1 stop12h 30m

Sat 9/129:30 pm -

1 stop13h 50m

Deal found 8/9

$581

Thu 9/102:15 pm -

1 stop10h 05m

Mon 9/148:30 pm -

1 stop11h 45m

Deal found 8/9

$556

Tue 9/228:55 am -

1 stop11h 40m

Tue 9/296:26 pm -

1 stop9h 49m

Deal found 8/8

$589

Wed 9/2311:30 am -

1 stop12h 50m

Tue 9/298:30 pm -

1 stop9h 35m

Deal found 8/10

$591

Thu 9/248:55 am -

1 stop11h 40m

Thu 10/15:15 pm -

1 stop11h 00m

Deal found 8/10

$571

One-way flights from Ireland to Washington, D.C.
Search for one-way flight options from Ireland to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.

Wed 8/269:40 am -

2 stops34h 30m

Deal found 8/9

$241

Wed 8/269:40 am -

2 stops37h 32m

Deal found 8/9

$269

Thu 9/36:30 am -

2 stops38h 37m

Deal found 8/8

$354

Thu 9/36:30 am -

2 stops22h 29m

Deal found 8/8

$362

Wed 9/26:45 pm -

2 stops44h 05m

Deal found 8/8

$365

Sat 9/265:25 pm -

2 stops44h 06m

Deal found 8/9

$366

Sat 9/265:25 pm -

2 stops45h 52m

Deal found 8/9

$366

Thu 9/310:40 am -

1 stop13h 29m

Deal found 8/6

$367

Mon 9/216:30 am -

2 stops36h 41m

Deal found 8/6

$367

Mon 9/216:30 am -

2 stops32h 47m

Deal found 8/6

$375

Wed 9/29:00 pm -

2 stops31h 59m

Deal found 8/10

$380

Fri 9/46:50 am -

2 stops22h 09m

Deal found 8/10

$384

Find flight deals from Ireland to Washington, D.C.

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$504 (SmartFares)
One-way from	$241 (Trip.com)
Popular in	March
Cheapest in	February
Average price	$806
Good round-trip deal	$845 or less
Good one-way deal	$689 or less

Provider with most accurate pricing for Dublin-Washington, D.C. (WAS) flight deals.

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Provider most trusted by Cheapflights users for Dublin-Washington, D.C. (WAS) flights.

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From Ireland to Washington, D.C. (WAS)

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One-way flight from Ireland to Washington, D.C. (WAS)

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High demand for flights, 0% potential price rise

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in August 2026

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Price to beat on a round-trip flight from Ireland to Washington, D.C. (WAS).

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Price to beat on a one-way flight from Ireland to Washington, D.C. (WAS).

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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

DublinWashington, D.C.

DUB Dublin - IAD Washington, D.C. Dulles Intl

DUBIAD

Dublin

Thu 9/3

2:15 pm-7:20 pm

1 stop10h 05m

Washington, D.C. Dulles Intl

Mon 9/7

8:30 pm-1:15 pm

1 stop11h 45m

$592

DublinBaltimore

DUB Dublin - BWI Baltimore/Washington

DUBBWI

Dublin

Sat 12/5

8:55 am-5:05 pm

1 stop13h 10m

Baltimore/Washington

Tue 12/8

5:12 pm-7:40 pm

2 stops21h 28m

$594

DublinWashington, D.C.

DUB Dublin - IAD Washington, D.C. Dulles Intl

DUBIAD

Dublin

Tue 10/20

8:55 am-3:35 pm

1 stop11h 40m

Washington, D.C. Dulles Intl

Tue 11/10

12:35 pm-9:00 am

2 stops15h 25m

$613

DublinWashington, D.C.

DUB Dublin - IAD Washington, D.C. Dulles Intl

DUBIAD

Dublin

Sun 10/11

5:55 am-3:35 pm

1 stop14h 40m

Washington, D.C. Dulles Intl

Mon 10/19

6:15 pm-3:25 pm

1 stop16h 10m

$613

CorkWashington, D.C.

ORK Cork - IAD Washington, D.C. Dulles Intl

ORKIAD

Cork

Sun 9/20

6:15 am-3:35 pm

1 stop14h 20m

Washington, D.C. Dulles Intl

Sun 9/27

5:30 pm-10:20 am

1 stop11h 50m

$615

CorkWashington, D.C.

ORK Cork - IAD Washington, D.C. Dulles Intl

ORKIAD

Cork

Sat 9/5

6:15 am-3:35 pm

1 stop14h 20m

Washington, D.C. Dulles Intl

Sat 9/12

12:18 pm-10:20 am

2 stops17h 02m

$615

DublinBaltimore

DUB Dublin - BWI Baltimore/Washington

DUBBWI

Dublin

Wed 10/21

10:30 am-7:40 pm

1 stop14h 10m

Baltimore/Washington

Wed 11/4

6:55 pm-12:15 pm

1 stop12h 20m

$616

DublinBaltimore

DUB Dublin - BWI Baltimore/Washington

DUBBWI

Dublin

Wed 10/21

12:50 pm-7:40 pm

1 stop11h 50m

Baltimore/Washington

Wed 11/4

6:55 pm-7:55 am

1 stop32h 00m

$616

DublinWashington, D.C.

DUB Dublin - IAD Washington, D.C. Dulles Intl

DUBIAD

Dublin

Wed 10/21

10:30 am-5:25 pm

1 stop11h 55m

Washington, D.C. Dulles Intl

Wed 11/4

6:05 pm-9:40 am

1 stop10h 35m

$616

DublinWashington, D.C.

DUB Dublin - IAD Washington, D.C. Dulles Intl

DUBIAD

Dublin

Fri 10/23

5:55 am-3:35 pm

1 stop14h 40m

Washington, D.C. Dulles Intl

Fri 11/6

8:03 am-7:45 am

1 stop18h 42m

$616

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Ireland to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Ireland with our price prediction graph.

DUB-IAD

DUB-DCA

ORK-IAD

SNN-IAD

DUB-BWI

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 Ireland to Washington, D.C.

IE0-WAS

DUB-IAD

DUB-DCA

ORK-IAD

SNN-IAD

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

Currently, November is the cheapest month in which you can book a flight from Ireland to Washington, D.C. (average of $517). Flying from Ireland to Washington, D.C. in August is currently the most expensive (average of $809). 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 WAS?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ireland to Washington, D.C. as you normally would.

Weekly flight availability from Ireland to Washington, D.C.

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

Tuesday 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 last year, Aer Lingus have had the lowest number of delays on this route, with just 13% of flights being delayed.

How far ahead should I book a flight from Ireland to Washington, D.C.?

The price you pay for your flight from Ireland to Washington, D.C. may vary depending on when you book. For the best chance of a lower fare, look to book 53 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Washington, D.C.

See what other customers who have flown with United Airlines and Aer Lingus from Ireland to Washington, D.C. have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

10,100 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

United Airlines

7.4

Good

10,100 reviews

United Airlines

7.4

Good

10,100 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Aer Lingus

7.3

Good

1,693 reviews

United Airlines

7.4

Good

10,100 reviews

Reviews

1 / 20

10.0

Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

How long is the flight from Ireland to Washington, D.C.?
Icelandair, American Airlines, and British Airways can get you from Ireland to Washington, D.C. in just under 12h 10m. Your travel time can differ by up to 1h 14m. There are 3351 mi between Ireland and Washington, D.C.. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines to fly from Ireland to Washington, D.C. one-way?
$477 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on American Airlines and United Airlines, with prices starting from $611 and $1,079, respectively.
What are the most popular routes from Ireland to Washington, D.C.?
When deciding which route to take from Ireland to Washington, D.C. consider Dublin - Washington, D.C. Dulles Intl, Dublin - Washington, D.C. Reagan-National or Dublin - Baltimore/Washington as they are the most popular.
What are the most reliable airlines from Ireland to Washington, D.C.?
Consider Qatar Airways (89%), American Airlines (83%) or Aer Lingus (83%) when booking your flight. These represent the most reliable airlines when flying from Ireland to Washington, D.C..
What are the cheapest flights from Ireland to Washington, D.C.?
On average you can expect to pay $1,369 for a flight from Ireland to Washington, D.C.. The cheapest flight overall is $415 while the most popular route, (Dublin - Washington, D.C. Dulles Intl) is currently priced at $457.
Can I find deals for flights from Ireland to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on Ireland to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ireland to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to Washington, D.C..
Can I find deals for business class flights from Ireland to Washington, D.C.?
Yes. Cheapflights offers flight deals from Ireland to Washington, D.C. 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.?
Currently, November is the cheapest month in which you can book a flight from Ireland to Washington, D.C. (average of $517). Flying from Ireland to Washington, D.C. in August is currently the most expensive (average of $809). 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

Alexandria

Owings Mills

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Tysons

Springfield

Lanham

Reston

Herndon

Rockville

Hyattsville

Fredericksburg

Falls Church

Hanover

Laurel

Oxon Hill

Clinton

Hunt Valley

Woodbridge

Silver Spring

Largo

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Washington, D.C. flight routes

Alternative routes for Ireland to Washington, D.C.

Charles de Gaulle to Dulles Intl flights

Heathrow to Dulles Intl flights

Frankfurt to Dulles Intl flights

Orly to Dulles Intl flights

Leonardo da Vinci/Fiumicino to Dulles Intl flights

Heathrow to Reagan-National flights

Barcelona-El Prat to Dulles Intl flights

Madrid to Dulles Intl flights

Gatwick to Dulles Intl flights

London City to Dulles Intl flights

Munich to Dulles Intl flights

Istanbul to Dulles Intl flights

Vienna to Dulles Intl flights

Amsterdam to Dulles Intl flights

Athens to Dulles Intl flights

Zurich to Dulles Intl flights

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Lisbon to Dulles Intl flights

Athens to Reagan-National flights

Malpensa to Dulles Intl flights

Bruxelles-National to Reagan-National flights

Geneva to Dulles Intl flights

Nice to Dulles Intl flights

Edinburgh to Dulles Intl flights

Manchester to Dulles Intl flights

Zurich to Reagan-National flights

Top 2 airlines flying from Ireland to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$452	Average$467	FlexibilityNo cancel fee	On-time76%
Aer Lingus	Cheapest$454	Average$683	FlexibilityNo cancel fee	On-timeN/A

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$241+ Cheap flights from Ireland to Washington, D.C. (WAS)

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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Ireland to Washington, D.C.

Cheapest flights from Ireland to Washington, D.C.Explore the most affordable flight options available from Ireland to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.

Explore the most affordable flight options available from Ireland to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.

Best flights from Ireland to Washington, D.C.Discover carefully curated flight deals from Ireland to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 11, 2026.

Discover carefully curated flight deals from Ireland to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 11, 2026.

Last-minute flights from Ireland to Washington, D.C.Discover last-minute flight deals from Ireland to Washington, D.C.. Data last updated August 11, 2026 and is based on user searches.

Discover last-minute flight deals from Ireland to Washington, D.C.. Data last updated August 11, 2026 and is based on user searches.

One-way flights from Ireland to Washington, D.C.Search for one-way flight options from Ireland to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.

Search for one-way flight options from Ireland to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.

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Best time to book a flight from Ireland to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Ireland with our price prediction graph.

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

What is the cheapest time of day to fly from IE to WAS?

Find hourly flight availability from Ireland to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 11, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ireland to Washington, D.C. as you normally would.

Weekly flight availability from Ireland to Washington, D.C.

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

Tuesday 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 last year, Aer Lingus have had the lowest number of delays on this route, with just 13% of flights being delayed.

How far ahead should I book a flight from Ireland to Washington, D.C.?

The price you pay for your flight from Ireland to Washington, D.C. may vary depending on when you book. For the best chance of a lower fare, look to book 53 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing Washington, D.C.

See what other customers who have flown with United Airlines and Aer Lingus from Ireland to Washington, D.C. have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What are the cheapest airlines to fly from Ireland to Washington, D.C. one-way?

What are the most popular routes from Ireland to Washington, D.C.?

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

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

Can I find deals for flights from Ireland to Washington, D.C. that include hotel bookings?

How can I find direct flights from Ireland to Washington, D.C.?

Can I find deals for business class flights from Ireland to Washington, D.C.?

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

Traveling to a place near Washington, D.C.?

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Alternative routes for Ireland to Washington, D.C.

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

Complete your trip

Complete your trip to Washington, D.C. by adding a car rental and/or hotel reservation to your travel itinerary.

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Find flights from Ireland to Washington, D.C., based on your preferred cabin class, be it economy, premium economy, business, or first class.

Ireland and Washington, D.C. flights

Browse other Ireland and Washington, D.C. flight options. Last updated on August 11, 2026.

Popular flight searches

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Ireland to Washington, D.C. flights

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Other flights to Washington, D.C.

Explore flights to Washington, D.C. departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 11, 2026.

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Cheapest flights from Ireland to Washington, D.C.
Explore the most affordable flight options available from Ireland to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.

Best flights from Ireland to Washington, D.C.
Discover carefully curated flight deals from Ireland to Washington, D.C. that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 11, 2026.

Last-minute flights from Ireland to Washington, D.C.
Discover last-minute flight deals from Ireland to Washington, D.C.. Data last updated August 11, 2026 and is based on user searches.

One-way flights from Ireland to Washington, D.C.
Search for one-way flight options from Ireland to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated August 11, 2026.