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

$321 is the cheapest one-way deal found within the past few days, from PLAY. You may also be able to find cheap deals on Icelandair and WestJet, with prices starting from $336 and $352, respectively.

What is the cheapest day to fly from Ireland to Washington, D.C.?

Travelers seeking maximum savings on their Ireland to Washington, D.C. flight should consider departing on Monday afternoons when fares are most often at their lowest. Wednesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 - Baltimore/Washington or Dublin - Washington, D.C. Reagan-National as they are the most popular.

What is the cheapest day to fly round-trip from Ireland to Washington, D.C.?

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Washington, D.C.. Check prices with Cheapflights to find a great deal for your trip.

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

To save on the cost of your flight from Ireland to Washington, D.C., book at least 27 days before your planned departure. Booking around this time can save you about 154% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $497 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $729.

What is the cheapest month to fly from Ireland to Washington, D.C.?

Flights from Ireland to Washington, D.C. lean towards being more expensive in July. Prices are generally better when you fly from Ireland to Washington, D.C. in January, with the cheapest ticket starting at $276.

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.

$493+ Flights from Ireland to Washington, D.C.

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

Most accurate provider	Gurufare 3 stars
Most trusted provider	Gurufare 3 stars
Round-trip from	$346 (Kiwi.com)
One-way from	$274 (Kiwi.com)
Popular in	July
Cheapest in	January
Average price	$570
Good round-trip deal	$645 or less
Good one-way deal	$457 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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Highest demand for flights based on searches. 18% potential increase in price ($131 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).

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Average for round-trip flights in April 2025

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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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Find 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 abril 1, 2025.

jue. 10/1611:35 amDUB - BWI

1 stop11h 05mPLAY

lun. 10/206:50 pmBWI - DUB

1 stop10h 15mPLAY

Deal found 3/31

$345

mar. 5/612:40 pmDUB - IAD

1 stop12h 19mScandinavian Airlines

dom. 5/1810:05 pmIAD - DUB

1 stop15h 10mScandinavian Airlines

Deal found 3/31

$379

lun. 4/282:15 pmDUB - IAD

1 stop10h 05mIcelandair

lun. 5/58:30 pmIAD - DUB

1 stop9h 35mIcelandair

Deal found 4/1

$419

mar. 5/612:15 pmDUB - BWI

1 stop12h 10mIcelandair

dom. 5/188:30 pmBWI - DUB

1 stop11h 45mIcelandair

Deal found 3/31

$426

mar. 5/1312:45 pmDUB - IAD

1 stop12h 20mBritish Airways

mar. 5/2010:40 pmIAD - DUB

1 stop15h 50mBritish Airways

Deal found 3/31

$461

jue. 5/11:20 pmDUB - DCA

2 stops14h 25mKLM

sáb. 5/1011:05 amDCA - DUB

1 stop18h 40mKLM

Deal found 3/31

$465

lun. 4/287:45 pmDUB - BWI

2 stops26h 55mMultiple Airlines

lun. 5/56:50 pmBWI - DUB

2 stops17h 40mMultiple Airlines

Deal found 4/1

$472

mar. 4/298:35 amDUB - IAD

1 stop16h 35mMultiple Airlines

mar. 5/610:40 pmIAD - DUB

1 stop15h 50mMultiple Airlines

Deal found 4/1

$488

jue. 5/16:00 amDUB - DCA

2 stops15h 51mAir France

sáb. 5/101:55 pmDCA - DUB

2 stops14h 20mAir France

Deal found 3/31

$492

jue. 5/155:55 amDUB - BWI

2 stops15h 28mKLM

jue. 5/2211:32 amBWI - DUB

1 stop15h 13mKLM

Deal found 3/31

$494

jue. 4/104:00 pmDUB - IAD

Nonstop7h 55mAer Lingus

jue. 4/178:25 pmIAD - DUB

Nonstop6h 50mAer Lingus

Deal found 3/31

$494

sáb. 4/128:35 amDUB - BWI

1 stop16h 00mBritish Airways

sáb. 4/269:20 pmBWI - DUB

1 stop14h 20mBritish Airways

Deal found 4/1

$498

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 abril 1, 2025.

vie. 5/1611:35 amDUB - BWI

1 stop11h 05mPLAY

sáb. 9/66:50 pmBWI - DUB

1 stop10h 30mPLAY

Deal found 3/31

$346

mar. 5/612:40 pmDUB - IAD

1 stop12h 19mScandinavian Airlines

dom. 5/1810:05 pmIAD - DUB

1 stop15h 10mScandinavian Airlines

Deal found 3/31

$379

lun. 4/282:15 pmDUB - IAD

1 stop10h 05mIcelandair

lun. 5/58:30 pmIAD - DUB

1 stop9h 35mIcelandair

Deal found 4/1

$419

mar. 5/1312:45 pmDUB - IAD

1 stop12h 20mBritish Airways

mar. 5/2010:40 pmIAD - DUB

1 stop15h 50mBritish Airways

Deal found 3/31

$461

jue. 5/11:20 pmDUB - DCA

2 stops14h 25mKLM

sáb. 5/1011:05 amDCA - DUB

1 stop18h 40mKLM

Deal found 3/31

$465

lun. 4/287:45 pmDUB - BWI

2 stops26h 55mMultiple Airlines

lun. 5/56:50 pmBWI - DUB

2 stops17h 40mMultiple Airlines

Deal found 4/1

$472

jue. 5/16:00 amDUB - DCA

2 stops15h 51mAir France

sáb. 5/101:55 pmDCA - DUB

2 stops14h 20mAir France

Deal found 3/31

$492

lun. 4/1412:45 pmDUB - IAD

1 stop12h 25mAmerican Airlines

dom. 4/205:40 pmIAD - DUB

1 stop11h 00mAmerican Airlines

Deal found 4/1

$496

sáb. 5/104:00 pmDUB - IAD

Nonstop7h 55mAer Lingus

sáb. 5/175:20 pmIAD - DUB

Nonstop6h 50mAer Lingus

Deal found 3/30

$501

dom. 4/278:55 amDUB - IAD

1 stop11h 40mDelta

dom. 5/412:11 pmIAD - DUB

1 stop16h 04mDelta

Deal found 3/31

$507

lun. 5/2611:30 amDUB - DCA

1 stop16h 28mJetBlue

mar. 6/36:09 amDCA - DUB

1 stop21h 11mJetBlue

Deal found 3/31

$580

mar. 5/612:30 pmDUB - IAD

Nonstop8h 00mLufthansa

dom. 5/1810:05 pmIAD - DUB

Nonstop7h 15mLufthansa

Deal found 3/31

$582

Last-minute flights from Ireland to Washington, D.C.
Discover last-minute flight deals from Ireland to Washington, D.C.. Data last updated abril 1, 2025 and is based on user searches.

dom. 4/610:15 amDUB - IAD

1 stop14h 44mScandinavian Airlines

dom. 4/1310:05 pmIAD - DUB

1 stop15h 10mScandinavian Airlines

Deal found 3/31

$610

lun. 4/78:45 amDUB - BWI

1 stop15h 50mAmerican Airlines

lun. 4/1411:50 amBWI - DUB

1 stop12h 40mAmerican Airlines

Deal found 3/31

$516

lun. 4/712:00 pmDUB - DCA

1 stop12h 56mKLM

dom. 4/201:25 pmDCA - DUB

1 stop16h 20mKLM

Deal found 3/31

$522

mar. 4/88:55 amDUB - IAD

1 stop11h 40mKLM

dom. 4/135:25 pmIAD - DUB

1 stop12h 00mKLM

Deal found 3/31

$507

mar. 4/89:30 amDUB - DCA

1 stop15h 29mAmerican Airlines

dom. 4/133:54 pmDCA - DUB

1 stop9h 36mAmerican Airlines

Deal found 3/31

$518

jue. 4/104:00 pmDUB - IAD

Nonstop7h 55mAer Lingus

jue. 4/178:25 pmIAD - DUB

Nonstop6h 50mAer Lingus

Deal found 3/31

$494

jue. 4/1012:45 pmDUB - IAD

1 stop12h 25mBritish Airways

mié. 4/1610:40 pmIAD - DUB

1 stop15h 45mBritish Airways

Deal found 4/1

$498

jue. 4/102:15 pmDUB - IAD

1 stop10h 05mIcelandair

mié. 4/168:30 pmIAD - DUB

1 stop11h 45mIcelandair

Deal found 3/31

$505

jue. 4/102:15 pmDUB - BWI

1 stop10h 10mIcelandair

jue. 4/178:30 pmBWI - DUB

1 stop9h 35mIcelandair

Deal found 3/31

$509

jue. 4/108:55 amDUB - IAD

1 stop11h 40mDelta

dom. 4/138:21 pmIAD - DUB

2 stops15h 19mDelta

Deal found 3/31

$509

jue. 4/108:55 amDUB - DCA

2 stops16h 01mDelta

jue. 4/1710:19 amDCA - DUB

1 stop17h 26mDelta

Deal found 4/1

$512

jue. 4/109:30 amDUB - IAD

2 stops15h 11mAmerican Airlines

jue. 4/172:12 pmIAD - DUB

1 stop10h 18mAmerican Airlines

Deal found 3/31

$519

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 abril 1, 2025.

dom. 5/411:30 amDUB - BWI

2 stops50h 52mMultiple Airlines

Deal found 3/31

$274

mié. 5/711:35 amDUB - BWI

1 stop11h 05mPLAY

Deal found 4/1

$321

lun. 9/12:15 pmDUB - BWI

1 stop10h 10mIcelandair

Deal found 3/31

$336

mié. 5/712:50 pmDUB - BWI

2 stops40h 08mWestJet

Deal found 4/1

$352

mié. 6/412:15 pmDUB - IAD

1 stop14h 55mIcelandair

Deal found 3/31

$366

mié. 6/411:30 amDUB - IAD

2 stops16h 24mWestJet

Deal found 3/31

$378

vie. 4/256:50 amDUB - IAD

3 stops36h 32mMultiple Airlines

Deal found 3/31

$388

vie. 9/512:00 pmDUB - DCA

1 stop25h 54mMultiple Airlines

Deal found 3/31

$392

mié. 4/2310:45 amDUB - IAD

1 stop33h 35mTAP AIR PORTUGAL

Deal found 3/31

$429

vie. 9/512:50 pmDUB - IAD

Nonstop8h 00mAer Lingus

Deal found 3/31

$444

lun. 5/269:15 pmSNN - IAD

2 stops46h 43mMultiple Airlines

Deal found 3/30

$446

mié. 5/711:30 amDUB - DCA

2 stops16h 45mWestJet

Deal found 4/1

$450

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

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

vie. 5/16

11:35 am-5:40 pm

1 stop11h 05m

Baltimore/Washington

sáb. 9/6

6:50 pm-10:20 am

1 stop10h 30m

$346

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

mar. 5/6

12:40 pm-7:59 pm

1 stop12h 19m

Washington, D.C. Dulles Intl

dom. 5/18

10:05 pm-6:15 pm

1 stop15h 10m

$379

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

lun. 4/28

2:15 pm-7:20 pm

1 stop10h 05m

Washington, D.C. Dulles Intl

lun. 5/5

8:30 pm-11:05 am

1 stop9h 35m

$419

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

mar. 5/6

12:15 pm-7:25 pm

1 stop12h 10m

Baltimore/Washington

dom. 5/18

8:30 pm-1:15 pm

1 stop11h 45m

$426

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

mar. 5/13

12:45 pm-8:05 pm

1 stop12h 20m

Washington, D.C. Dulles Intl

mar. 5/20

10:40 pm-7:30 pm

1 stop15h 50m

$461

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

jue. 5/1

1:20 pm-10:45 pm

2 stops14h 25m

Washington, D.C. Reagan-National

sáb. 5/10

11:05 am-10:45 am

1 stop18h 40m

$465

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

lun. 4/28

7:45 pm-5:40 pm

2 stops26h 55m

Baltimore/Washington

lun. 5/5

6:50 pm-5:30 pm

2 stops17h 40m

$472

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

mar. 4/29

8:35 am-8:10 pm

1 stop16h 35m

Washington, D.C. Dulles Intl

mar. 5/6

10:40 pm-7:30 pm

1 stop15h 50m

$488

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

jue. 5/1

6:00 am-4:51 pm

2 stops15h 51m

Washington, D.C. Reagan-National

sáb. 5/10

1:55 pm-9:15 am

2 stops14h 20m

$492

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

jue. 5/15

5:55 am-4:23 pm

2 stops15h 28m

Baltimore/Washington

jue. 5/22

11:32 am-7:45 am

1 stop15h 13m

$494

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 60 results

...

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.

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.

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

Currently, August is the cheapest month in which you can book a flight from Ireland to Washington, D.C. (average of $241). Flying from Ireland to Washington, D.C. in March is currently the most expensive (average of $290). 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?

When flying from Ireland to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 11% versus a flight in the morning.

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

The most flights from IE0 to WAS are scheduled on a Thursday (12 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (8 on average).

Rainfall in Washington, D.C. by month

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.

Temperature in Washington, D.C. by month

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).

Reviews of airlines servicing Washington, D.C.

To help decide which airline to fly from Ireland to Washington, D.C., see what other customers have to say about Delta, KLM and Finnair. 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.

Delta

8.0

Very good

7,899 reviews

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

Delta

8.0

Very good

7,899 reviews

Delta

8.0

Very good

7,899 reviews

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

KLM

7.8

Good

1,321 reviews

Delta

8.0

Very good

7,899 reviews

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

Finnair

7.6

Good

1,267 reviews

Delta

8.0

Very good

7,899 reviews

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

SWISS

7.5

Good

1,570 reviews

Delta

8.0

Very good

7,899 reviews

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

Air France

7.4

Good

1,425 reviews

Delta

8.0

Very good

7,899 reviews

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

Related info for your journey

What are the cheapest airlines to fly from Ireland to Washington, D.C. one-way?
$321 is the cheapest one-way deal found within the past few days, from PLAY. You may also be able to find cheap deals on Icelandair and WestJet, with prices starting from $336 and $352, 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 - Baltimore/Washington or Dublin - Washington, D.C. Reagan-National as they are the most popular.
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, August is the cheapest month in which you can book a flight from Ireland to Washington, D.C. (average of $241). Flying from Ireland to Washington, D.C. in March is currently the most expensive (average of $290). 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

Arlington

Alexandria

Fairfax

Tysons

Springfield

Rockville

Fredericksburg

Woodbridge

Gaithersburg

Linthicum Heights

Silver Spring

Falls Church

Laurel

Easton

Herndon

Bowie

Gettysburg

National Harbor

Oxon Hill

Reston

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Ireland to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
PLAY	Cheapest$256	Average$385	FlexibilityNo cancel fee	On-timeN/A
Aer Lingus	Cheapest$433	Average$633	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$612	Average$738	FlexibilityNo cancel fee	On-time69%

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$274+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ireland to Washington, D.C. with Cheapflights

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3. Compare prices and book

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

Keep the following information in mind while searching for Ireland to Washington, D.C. flight deals. Data was last updated abril 1, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find 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 abril 1, 2025.

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 abril 1, 2025.

Cheapflights Fare Finder

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

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.

Cheapflights Insights

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

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 abril 1, 2025.

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

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

Reviews of airlines servicing Washington, D.C.

Related info for your journey

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

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.?

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 Ireland?

Browse thousands of different options on Cheapflights for your next trip

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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.

Top 3 airlines flying from Ireland to Washington, D.C.

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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 abril 1, 2025.