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

Icelandair, Scandinavian 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 22h 35m. 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?

$337 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on Aer Lingus and American Airlines, with prices starting from $381 and $494, 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 $1,008 for a flight from Ireland to Washington, D.C.. The cheapest flight overall is $444 while the most popular route, (Dublin - Washington, D.C. Dulles Intl) is currently priced at $420.

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

Consider SWISS (100%), Air Canada (94%) or United Airlines (94%) when booking your flight. These represent the most reliable airlines when flying from Ireland to Washington, D.C..

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

Aer Lingus, United Airlines and Icelandair are the most popular 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.

$309+ Flights from Ireland to Washington, D.C.

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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 December 18, 2025.

Wed 12/248:50 amDUB - IAD

1 stop12h 15mMultiple Airlines

Wed 1/76:50 pmIAD - DUB

1 stop32h 10mMultiple Airlines

Deal found 12/16

$698

Wed 12/249:45 amDUB - DCA

1 stop18h 11mDelta

Wed 1/711:10 amDCA - DUB

2 stops15h 50mDelta

Deal found 12/16

$711

Wed 12/249:30 amDUB - DCA

1 stop10h 59mUnited Airlines

Sat 1/37:00 pmDCA - DUB

1 stop32h 10mUnited Airlines

Deal found 12/15

$714

Wed 12/2411:30 amDUB - DCA

1 stop10h 05mMultiple Airlines

Wed 1/74:43 pmDCA - DUB

1 stop10h 57mMultiple Airlines

Deal found 12/16

$720

Mon 12/228:45 amDUB - IAD

1 stop11h 50mBritish Airways

Wed 12/319:45 pmIAD - DUB

1 stop17h 00mBritish Airways

Deal found 12/16

$730

Wed 12/245:55 amDUB - IAD

1 stop15h 10mDelta

Wed 1/76:50 pmIAD - DUB

1 stop15h 55mDelta

Deal found 12/16

$734

Fri 12/269:30 amDUB - DCA

1 stop10h 59mUnited Airlines

Sat 1/37:00 pmDCA - DUB

1 stop32h 10mUnited Airlines

Deal found 12/16

$736

Fri 12/1910:45 amDUB - DCA

2 stops25h 58mBritish Airways

Sat 12/271:44 pmDCA - DUB

1 stop13h 56mBritish Airways

Deal found 12/16

$744

Sun 12/218:40 pmDUB - IAD

1 stop23h 55mBritish Airways

Mon 1/126:20 pmIAD - DUB

1 stop10h 30mBritish Airways

Deal found 12/16

$751

Sun 12/216:30 pmDUB - IAD

1 stop26h 05mBritish Airways

Tue 12/309:45 pmIAD - DUB

1 stop16h 55mBritish Airways

Deal found 12/18

$752

Fri 12/2610:40 amDUB - IAD

1 stop11h 50mUnited Airlines

Sat 1/310:20 pmIAD - DUB

Nonstop7h 00mUnited Airlines

Deal found 12/16

$758

Wed 12/249:00 amDUB - IAD

2 stops36h 30mAir Canada

Wed 1/710:06 pmIAD - DUB

1 stop28h 04mAir Canada

Deal found 12/16

$766

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 December 18, 2025.

Sat 1/1711:30 amDUB - BWI

1 stop12h 10mIcelandair

Fri 1/237:40 pmBWI - DUB

1 stop9h 35mIcelandair

Deal found 12/16

$424

Wed 3/411:30 amDUB - IAD

2 stops34h 45mScandinavian Airlines

Wed 3/119:30 pmIAD - DUB

2 stops33h 15mScandinavian Airlines

Deal found 12/16

$478

Sat 1/314:05 pmDUB - BWI

1 stop31h 40mAmerican Airlines

Sat 2/78:35 pmBWI - DUB

1 stop16h 05mAmerican Airlines

Deal found 12/16

$487

Wed 3/48:40 pmDUB - BWI

1 stop27h 05mBritish Airways

Wed 3/119:35 pmBWI - DUB

1 stop30h 20mBritish Airways

Deal found 12/15

$489

Wed 2/1110:20 amDUB - BWI

1 stop13h 25mMultiple Airlines

Wed 2/188:35 pmBWI - DUB

1 stop10h 40mMultiple Airlines

Deal found 12/16

$490

Thu 1/158:50 amDUB - IAD

1 stop12h 15mDelta

Fri 1/237:49 pmIAD - DUB

2 stops14h 56mDelta

Deal found 12/16

$515

Mon 1/1210:45 amDUB - DCA

1 stop17h 03mKLM

Mon 1/196:00 amDCA - DUB

1 stop21h 45mKLM

Deal found 12/15

$519

Thu 1/1511:30 amDUB - BWI

1 stop12h 10mIcelandair

Fri 1/237:40 pmBWI - DUB

1 stop9h 35mIcelandair

Deal found 12/16

$424

Fri 1/168:50 amDUB - BWI

1 stop14h 55mBritish Airways

Tue 1/202:46 pmBWI - DUB

2 stops18h 34mBritish Airways

Deal found 12/14

$490

Fri 2/2711:30 amDUB - IAD

2 stops17h 29mAmerican Airlines

Mon 3/26:20 pmIAD - DUB

1 stop17h 45mAmerican Airlines

Deal found 12/17

$495

Fri 2/2712:30 pmDUB - IAD

1 stop35h 20mScandinavian Airlines

Mon 3/28:30 pmIAD - DUB

1 stop16h 50mScandinavian Airlines

Deal found 12/17

$497

Fri 1/1611:30 amDUB - BWI

1 stop12h 10mIcelandair

Tue 1/207:40 pmBWI - DUB

1 stop9h 35mIcelandair

Deal found 12/14

$454

Thu 1/1511:30 amDUB - DCA

1 stop10h 20mMultiple Airlines

Thu 1/224:43 pmDCA - DUB

1 stop10h 57mMultiple Airlines

Deal found 12/16

$515

Sat 1/316:00 amORK - IAD

1 stop15h 05mDelta

Sat 2/712:23 pmIAD - ORK

2 stops21h 37mDelta

Deal found 12/17

$520

Sat 1/1710:55 amDUB - BWI

1 stop12h 50mBritish Airways

Fri 1/238:35 pmBWI - DUB

1 stop12h 45mBritish Airways

Deal found 12/16

$490

Thu 1/1511:30 amDUB - IAD

1 stop12h 00mIcelandair

Mon 1/197:40 pmIAD - DUB

1 stop9h 35mIcelandair

Deal found 12/16

$455

Mon 1/1211:30 amDUB - DCA

1 stop10h 20mAmerican Airlines

Sun 1/184:43 pmDCA - DUB

1 stop10h 57mAmerican Airlines

Deal found 12/16

$515

Sat 1/1711:30 amDUB - DCA

1 stop14h 29mMultiple Airlines

Fri 1/234:43 pmDCA - DUB

1 stop10h 57mMultiple Airlines

Deal found 12/16

$515

Mon 1/128:40 pmDUB - IAD

1 stop23h 55mBritish Airways

Sun 1/186:20 pmIAD - DUB

1 stop10h 30mBritish Airways

Deal found 12/16

$490

Thu 1/1511:30 amDUB - DCA

1 stop10h 20mAmerican Airlines

Wed 1/214:43 pmDCA - DUB

1 stop10h 57mAmerican Airlines

Deal found 12/15

$515

Thu 1/2911:30 amDUB - DCA

1 stop10h 20mMultiple Airlines

Thu 2/54:43 pmDCA - DUB

1 stop10h 57mMultiple Airlines

Deal found 12/15

$515

Sat 1/316:00 amORK - DCA

2 stops21h 53mDelta

Sat 2/72:25 pmDCA - ORK

2 stops19h 35mDelta

Deal found 12/17

$592

Thu 1/158:50 amDUB - IAD

1 stop11h 45mBritish Airways

Fri 1/236:20 pmIAD - DUB

1 stop15h 00mBritish Airways

Deal found 12/16

$490

Fri 1/3011:30 amDUB - DCA

1 stop10h 20mMultiple Airlines

Fri 2/64:43 pmDCA - DUB

1 stop10h 57mMultiple Airlines

Deal found 12/16

$515

Tue 5/1212:45 pmDUB - IAD

1 stop12h 35mBritish Airways

Fri 5/225:40 pmIAD - DUB

1 stop11h 00mBritish Airways

Deal found 12/16

$494

Mon 1/1211:30 amDUB - DCA

2 stops15h 34mMultiple Airlines

Sun 1/254:43 pmDCA - DUB

1 stop10h 57mMultiple Airlines

Deal found 12/17

$515

Thu 4/301:45 pmDUB - IAD

1 stop11h 35mBritish Airways

Sat 5/167:15 pmIAD - DUB

1 stop19h 10mBritish Airways

Deal found 12/16

$494

Mon 1/1211:30 amDUB - DCA

1 stop10h 20mMultiple Airlines

Sun 1/184:43 pmDCA - DUB

1 stop10h 57mMultiple Airlines

Deal found 12/15

$515

Thu 1/227:50 amSNN - IAD

1 stop12h 45mAmerican Airlines

Mon 1/269:45 pmIAD - SNN

1 stop32h 45mAmerican Airlines

Deal found 12/16

$649

Thu 1/1511:30 amDUB - DCA

1 stop10h 20mMultiple Airlines

Wed 1/214:43 pmDCA - DUB

1 stop10h 57mMultiple Airlines

Deal found 12/16

$515

Last-minute flights from Ireland to Washington, D.C.
Discover last-minute flight deals from Ireland to Washington, D.C.. Data last updated December 18, 2025 and is based on user searches.

Mon 1/1211:30 amDUB - BWI

1 stop12h 10mIcelandair

Sun 1/187:40 pmBWI - DUB

1 stop9h 35mIcelandair

Deal found 12/16

$422

Mon 1/1211:30 amDUB - BWI

1 stop12h 10mIcelandair

Mon 1/197:40 pmBWI - DUB

1 stop9h 35mIcelandair

Deal found 12/17

$424

Thu 1/1511:30 amDUB - IAD

1 stop12h 00mIcelandair

Wed 1/217:40 pmIAD - DUB

1 stop9h 35mIcelandair

Deal found 12/16

$424

Thu 1/1511:30 amDUB - BWI

1 stop12h 10mIcelandair

Wed 1/217:40 pmBWI - DUB

1 stop9h 35mIcelandair

Deal found 12/17

$425

Thu 1/1511:30 amDUB - IAD

1 stop12h 00mIcelandair

Mon 1/197:40 pmIAD - DUB

1 stop9h 35mIcelandair

Deal found 12/16

$455

Fri 1/1611:30 amDUB - BWI

1 stop12h 10mIcelandair

Tue 1/207:40 pmBWI - DUB

1 stop9h 35mIcelandair

Deal found 12/15

$454

Tue 1/2012:30 pmDUB - IAD

1 stop33h 45mScandinavian Airlines

Mon 1/264:50 pmIAD - DUB

1 stop13h 55mScandinavian Airlines

Deal found 12/16

$447

Thu 1/298:50 amDUB - BWI

1 stop14h 55mBritish Airways

Thu 2/58:35 pmBWI - DUB

1 stop18h 15mBritish Airways

Deal found 12/15

$489

Fri 1/3011:30 amDUB - BWI

1 stop12h 10mIcelandair

Fri 2/67:40 pmBWI - DUB

1 stop9h 35mIcelandair

Deal found 12/16

$487

Fri 1/301:40 pmDUB - IAD

1 stop11h 15mAmerican Airlines

Fri 2/69:45 pmIAD - DUB

1 stop12h 20mAmerican Airlines

Deal found 12/16

$487

Fri 1/3011:30 amDUB - IAD

1 stop12h 00mIcelandair

Fri 2/67:40 pmIAD - DUB

1 stop9h 35mIcelandair

Deal found 12/16

$488

Sat 1/3110:10 amDUB - IAD

1 stop13h 40mScandinavian Airlines

Sat 2/78:30 pmIAD - DUB

1 stop16h 50mScandinavian Airlines

Deal found 12/16

$452

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 December 18, 2025.

Tue 2/311:30 amDUB - BWI

1 stop12h 10mIcelandair

Deal found 12/15

$309

Wed 1/216:05 pmSNN - IAD

2 stops43h 35mMultiple Airlines

Deal found 12/16

$329

Wed 1/216:05 pmSNN - BWI

2 stops50h 01mMultiple Airlines

Deal found 12/16

$329

Fri 1/2310:00 pmSNN - BWI

2 stops30h 47mMultiple Airlines

Deal found 12/16

$340

Mon 3/2311:30 amDUB - BWI

1 stop12h 10mIcelandair

Deal found 12/17

$346

Sat 5/302:15 pmDUB - BWI

1 stop10h 10mIcelandair

Deal found 12/17

$350

Thu 1/227:50 amSNN - IAD

2 stops29h 50mMultiple Airlines

Deal found 12/16

$379

Thu 1/227:50 amSNN - BWI

2 stops36h 16mMultiple Airlines

Deal found 12/16

$379

Tue 2/38:00 pmDUB - BWI

3 stops43h 26mMultiple Airlines

Deal found 12/15

$386

Tue 1/207:20 pmSNN - IAD

3 stops48h 55mMultiple Airlines

Deal found 12/16

$394

Mon 1/267:50 amDUB - BWI

3 stops45h 31mMultiple Airlines

Deal found 12/16

$395

Fri 1/2310:00 pmSNN - IAD

2 stops39h 33mMultiple Airlines

Deal found 12/16

$408

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

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$420 (Booking.com)
One-way from	$309 (Mytrip)
Popular in	August
Cheapest in	February
Average price	$616
Good round-trip deal	$678 or less
Good one-way deal	$484 or less

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

Search Deals

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

Search Deals

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

Search Deals

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

Search Deals

Highest demand for flights based on searches. 13% potential increase in price ($88 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($20 potential savings vs. average RT 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. (WAS).

Search Deals

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

Search Deals

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

Sat 1/17

11:30 am-6:40 pm

1 stop12h 10m

Baltimore/Washington

Fri 1/23

7:40 pm-10:15 am

1 stop9h 35m

$424

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Thu 1/15

11:30 am-6:40 pm

1 stop12h 10m

Baltimore/Washington

Fri 1/23

7:40 pm-10:15 am

1 stop9h 35m

$424

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Fri 1/16

11:30 am-6:40 pm

1 stop12h 10m

Baltimore/Washington

Tue 1/20

7:40 pm-10:15 am

1 stop9h 35m

$454

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Thu 1/15

11:30 am-6:30 pm

1 stop12h 00m

Washington, D.C. Dulles Intl

Mon 1/19

7:40 pm-10:15 am

1 stop9h 35m

$455

DublinWashington, D.C.

DUB - IAD

DUBIAD

Dublin

Wed 3/4

11:30 am-5:15 pm

2 stops34h 45m

Washington, D.C. Dulles Intl

Wed 3/11

9:30 pm-10:45 am

2 stops33h 15m

$478

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Sat 1/31

4:05 pm-6:45 pm

1 stop31h 40m

Baltimore/Washington

Sat 2/7

8:35 pm-5:40 pm

1 stop16h 05m

$487

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Wed 3/4

8:40 pm-6:45 pm

1 stop27h 05m

Baltimore/Washington

Wed 3/11

9:35 pm-7:55 am

1 stop30h 20m

$489

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Wed 2/11

10:20 am-6:45 pm

1 stop13h 25m

Baltimore/Washington

Wed 2/18

8:35 pm-12:15 pm

1 stop10h 40m

$490

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Fri 1/16

8:50 am-6:45 pm

1 stop14h 55m

Baltimore/Washington

Tue 1/20

2:46 pm-2:20 pm

2 stops18h 34m

$490

DublinBaltimore

DUB - BWI

DUBBWI

Dublin

Sat 1/17

10:55 am-6:45 pm

1 stop12h 50m

Baltimore/Washington

Fri 1/23

8:35 pm-2:20 pm

1 stop12h 45m

$490

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

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, February is the cheapest month in which you can book a flight from Ireland to Washington, D.C. (average of $284). Flying from Ireland to Washington, D.C. in July is currently the most expensive (average of $507). 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 in the evening, which can drop the price by up to 19% 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 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 last year, Aer Lingus have had the lowest number of delays on this route, with just 14% of flights being delayed.

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

9,091 reviews

Reviews

1 / 20

4.0

Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability

United Airlines

7.4

Good

9,091 reviews

United Airlines

7.4

Good

9,091 reviews

Reviews

1 / 20

4.0

Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability

Aer Lingus

7.2

Good

1,395 reviews

United Airlines

7.4

Good

9,091 reviews

Reviews

1 / 20

4.0

Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability

Related info for your journey

How long is the flight from Ireland to Washington, D.C.?
Icelandair, Scandinavian 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 22h 35m. 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?
$337 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on Aer Lingus and American Airlines, with prices starting from $381 and $494, 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 SWISS (100%), Air Canada (94%) or United Airlines (94%) 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 $1,008 for a flight from Ireland to Washington, D.C.. The cheapest flight overall is $444 while the most popular route, (Dublin - Washington, D.C. Dulles Intl) is currently priced at $420.
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, February is the cheapest month in which you can book a flight from Ireland to Washington, D.C. (average of $284). Flying from Ireland to Washington, D.C. in July is currently the most expensive (average of $507). 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

Woodbridge

Tysons

Arlington

Owings Mills

Springfield

Hanover

Silver Spring

Fredericksburg

Linthicum Heights

Rockville

Laurel

Towson

Manassas

National Harbor

Bowie

Largo

McLean

Clinton

Cordova

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
Icelandair	Cheapest$425	Average$603	FlexibilityNo cancel fee	On-time76%
Aer Lingus	Cheapest$454	Average$604	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$643	Average$802	FlexibilityNo cancel fee	On-time69%

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$309+ 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 2/3. 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

1. Tell us where you want to go

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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 December 18, 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 December 18, 2025.

Find 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 December 18, 2025.

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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 December 18, 2025.

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

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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

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.

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

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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.?

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What is the cheapest month to book a flight 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 December 18, 2025.