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

For one-way options, check prices for WestJet. According to our data, you can fly for as low as $447. Users have also found prices from $455 and $507 on JetBlue and Icelandair, respectively.

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

Currently, February is the cheapest month in which you can book a flight from Ireland to Washington, D.C. Reagan-National Airport (average of $278). Flying from Ireland to Washington, D.C. Reagan-National Airport in June is currently the most expensive (average of $344). 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 are the most popular routes from Ireland to Washington, D.C. Reagan-National Airport?

When deciding which route to take from Ireland to Washington, D.C. Reagan-National Airport consider Dublin - Washington, D.C. Reagan-National, Cork - Washington, D.C. Reagan-National or Shannon - Washington, D.C. Reagan-National as they are the most popular.

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

Travelers have found it’s best to book a flight 27 days in advance to save up to 149% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 27 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Ireland to Washington, D.C. Reagan-National Airport 1-2 weeks in advance for as low as $497, or $697 for flights within the next 24 hours.

What is the cheapest month to fly from Ireland to Washington, D.C. Reagan-National Airport?

The best pricing can be found in the month of January. Prices to Washington, D.C. Reagan-National Airport from Ireland average $562. You can even find prices in January for less than $562, as users have found deals to Washington, D.C. Reagan-National Airport from as low as $276. The month of July appears to be one of the more expensive times to travel to Washington, D.C. Reagan-National Airport from Ireland. Flying in the targeted month can save you up to 35%.

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

When flying from Ireland to Washington, D.C. Reagan-National Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Ireland to Reagan-National that include hotel bookings?

Yes. In addition to deals on Ireland to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ireland to Reagan-National?

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

Can I find deals for business class flights from Ireland to Reagan-National?

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

$679+ Flights from Ireland to Washington, D.C. Reagan-National Airport - Compare & Save Big

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Cheap flight deals from Ireland to Reagan-National

Most accurate provider	Gurufare 3 stars
Most trusted provider	Gurufare 3 stars
Round-trip from	$458 (Delta)
One-way from	$447 (Kiwi.com)
Popular in	July
Cheapest in	January
Average price	$530

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. Reagan-National

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One-way flight from Ireland to Washington, D.C. Reagan-National

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Highest demand for flights based on searches. 19% potential increase in price ($133 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).

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Average for round-trip flights in May 2025

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Find flight deals from Ireland to Reagan-National

Cheapest flights from Ireland to Reagan-National
Explore the most affordable flight options available from Ireland to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Fri 5/161:20 pmDUB - DCA

2 stops14h 25mDelta

Tue 5/201:15 pmDCA - DUB

1 stop16h 30mDelta

Deal found 4/30

$458

Fri 9/511:45 amDUB - DCA

1 stop13h 33mAmerican Airlines

Sat 9/1311:50 amDCA - DUB

1 stop12h 40mAmerican Airlines

Deal found 4/30

$477

Fri 5/99:50 amDUB - DCA

1 stop14h 53mUnited Airlines

Sun 5/181:15 pmDCA - DUB

1 stop16h 55mUnited Airlines

Deal found 5/1

$519

Mon 11/311:30 amDUB - DCA

1 stop10h 40mMultiple Airlines

Mon 11/174:40 pmDCA - DUB

1 stop11h 00mMultiple Airlines

Deal found 4/30

$524

Sun 6/159:50 amDUB - DCA

1 stop28h 03mAir Canada

Mon 6/308:40 pmDCA - DUB

1 stop30h 35mAir Canada

Deal found 4/30

$538

Mon 5/1912:30 pmSNN - DCA

1 stop31h 06mUnited Airlines

Mon 5/261:00 pmDCA - SNN

1 stop13h 30mUnited Airlines

Deal found 5/1

$540

Sat 11/229:45 amDUB - DCA

1 stop13h 15mKLM

Sat 11/295:00 pmDCA - DUB

1 stop10h 45mKLM

Deal found 5/1

$544

Thu 5/86:00 amORK - DCA

2 stops22h 15mDelta

Mon 5/127:54 pmDCA - ORK

2 stops22h 36mDelta

Deal found 4/30

$546

Mon 6/210:40 amDUB - DCA

1 stop11h 15mJetBlue

Mon 6/96:50 pmDCA - DUB

1 stop9h 10mJetBlue

Deal found 5/1

$606

Wed 10/2211:45 amORK - DCA

2 stops16h 10mBritish Airways

Fri 10/313:59 pmDCA - ORK

2 stops15h 11mBritish Airways

Deal found 4/30

$606

Fri 6/612:40 pmDUB - DCA

2 stops39h 05mScandinavian Airlines

Mon 6/96:07 amDCA - DUB

2 stops31h 08mScandinavian Airlines

Deal found 5/1

$610

Fri 5/912:45 pmDUB - DCA

2 stops14h 51mBritish Airways

Sun 5/1812:35 pmDCA - DUB

2 stops22h 25mBritish Airways

Deal found 5/1

$632

Best flights from Ireland to Reagan-National
Discover carefully curated flight deals from Ireland to Reagan-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2025.

Fri 5/161:20 pmDUB - DCA

2 stops14h 25mDelta

Tue 5/201:15 pmDCA - DUB

1 stop16h 30mDelta

Deal found 4/30

$458

Fri 9/511:45 amDUB - DCA

1 stop13h 33mAmerican Airlines

Sat 9/1311:50 amDCA - DUB

1 stop12h 40mAmerican Airlines

Deal found 4/30

$477

Fri 5/169:50 amDUB - DCA

1 stop14h 53mUnited Airlines

Tue 5/2011:15 amDCA - DUB

1 stop15h 05mUnited Airlines

Deal found 4/30

$520

Sun 6/159:50 amDUB - DCA

1 stop28h 03mAir Canada

Mon 6/308:40 pmDCA - DUB

1 stop30h 35mAir Canada

Deal found 4/30

$538

Tue 6/37:00 pmDUB - DCA

2 stops25h 49mMultiple Airlines

Sun 6/811:00 amDCA - DUB

2 stops18h 20mMultiple Airlines

Deal found 5/1

$594

Mon 6/210:40 amDUB - DCA

1 stop11h 15mJetBlue

Mon 6/96:50 pmDCA - DUB

1 stop9h 10mJetBlue

Deal found 5/1

$606

Wed 10/2211:45 amORK - DCA

2 stops16h 10mBritish Airways

Fri 10/313:59 pmDCA - ORK

2 stops15h 11mBritish Airways

Deal found 4/30

$606

Fri 6/612:40 pmDUB - DCA

2 stops39h 05mScandinavian Airlines

Mon 6/96:07 amDCA - DUB

2 stops31h 08mScandinavian Airlines

Deal found 5/1

$610

Sun 6/151:45 pmDUB - DCA

1 stop13h 30mRoyal Air Maroc

Sun 6/223:59 pmDCA - DUB

1 stop9h 31mRoyal Air Maroc

Deal found 5/1

$679

Tue 5/202:15 pmDUB - DCA

2 stops24h 05mIcelandair

Tue 5/274:15 pmDCA - DUB

2 stops13h 50mIcelandair

Deal found 4/29

$702

Tue 6/179:45 amDUB - DCA

2 stops18h 22mFinnair

Sun 6/296:59 pmDCA - DUB

2 stops33h 01mFinnair

Deal found 4/30

$772

Fri 6/131:05 pmSNN - DCA

2 stops14h 52mAir France

Fri 6/2011:00 amDCA - SNN

1 stop19h 10mAir France

Deal found 5/1

$864

Last-minute flights from Ireland to Reagan-National
Discover last-minute flight deals from Ireland to Reagan-National. Data last updated May 1, 2025 and is based on user searches.

Wed 4/304:20 pmDUB - DCA

1 stop19h 29mAmerican Airlines

Sun 5/45:09 pmDCA - DUB

1 stop10h 16mAmerican Airlines

Deal found 4/30

$973

Tue 5/612:15 pmDUB - DCA

2 stops24h 45mIcelandair

Tue 5/135:40 pmDCA - DUB

2 stops12h 25mIcelandair

Deal found 4/29

$1,059

Thu 5/86:00 amORK - DCA

2 stops22h 15mDelta

Mon 5/127:54 pmDCA - ORK

2 stops22h 36mDelta

Deal found 4/30

$546

Fri 5/99:50 amDUB - DCA

1 stop14h 53mUnited Airlines

Sun 5/181:15 pmDCA - DUB

1 stop16h 55mUnited Airlines

Deal found 5/1

$519

Fri 5/99:50 amDUB - DCA

1 stop13h 13mAir Canada

Sun 5/1812:55 pmDCA - DUB

2 stops14h 20mAir Canada

Deal found 5/1

$559

Fri 5/91:20 pmDUB - DCA

2 stops14h 25mDelta

Sun 5/186:55 pmDCA - DUB

1 stop10h 50mDelta

Deal found 5/1

$595

Fri 5/912:45 pmDUB - DCA

2 stops14h 51mBritish Airways

Sun 5/1812:35 pmDCA - DUB

2 stops22h 25mBritish Airways

Deal found 5/1

$632

Fri 5/95:30 amDUB - DCA

2 stops19h 30mTAP AIR PORTUGAL

Sun 5/184:15 pmDCA - DUB

2 stops20h 50mTAP AIR PORTUGAL

Deal found 5/1

$1,947

Fri 5/99:50 amDUB - DCA

1 stop13h 13mUnited Airlines

Sun 5/181:15 pmDCA - DUB

1 stop16h 55mUnited Airlines

Deal found 5/1

$519

Fri 5/161:20 pmDUB - DCA

2 stops14h 25mDelta

Tue 5/201:15 pmDCA - DUB

1 stop16h 30mDelta

Deal found 4/30

$458

Mon 5/1912:30 pmSNN - DCA

1 stop31h 06mUnited Airlines

Mon 5/261:00 pmDCA - SNN

1 stop13h 30mUnited Airlines

Deal found 5/1

$540

Mon 5/197:40 amSNN - DCA

2 stops30h 49mAmerican Airlines

Mon 5/269:45 amDCA - SNN

2 stops20h 35mAmerican Airlines

Deal found 5/1

$659

One-way flights from Ireland to Reagan-National
Search for one-way flight options from Ireland to Reagan-National. Find affordable one-way fares based on user searches. Data last updated May 1, 2025.

Mon 8/1110:15 amDUB - DCA

2 stops17h 48mWestJet

Deal found 4/30

$447

Mon 5/1210:40 amDUB - DCA

1 stop11h 15mJetBlue

Deal found 5/1

$455

Mon 6/97:10 amDUB - DCA

3 stops19h 43mMultiple Airlines

Deal found 4/30

$476

Wed 6/412:15 pmDUB - DCA

2 stops26h 00mIcelandair

Deal found 4/29

$507

Fri 9/51:45 pmDUB - DCA

1 stop11h 59mBritish Airways

Deal found 4/30

$526

Tue 9/308:35 amDUB - DCA

2 stops16h 10mAmerican Airlines

Deal found 4/29

$623

Thu 5/85:30 amDUB - DCA

2 stops45h 12mTAP AIR PORTUGAL

Deal found 5/1

$647

Sat 6/147:40 amSNN - DCA

2 stops20h 27mAmerican Airlines

Deal found 4/30

$714

Tue 5/207:40 amSNN - DCA

2 stops17h 19mBritish Airways

Deal found 4/30

$717

Fri 6/2712:30 pmSNN - DCA

1 stop14h 08mMultiple Airlines

Deal found 4/30

$761

Fri 6/271:05 pmSNN - DCA

2 stops15h 41mDelta

Deal found 4/30

$832

Thu 5/89:50 amDUB - DCA

1 stop13h 13mAir Canada

Deal found 5/1

$1,116

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Fri 5/16

1:20 pm-10:45 pm

2 stops14h 25m

Washington, D.C. Reagan-National

Tue 5/20

1:15 pm-10:45 am

1 stop16h 30m

$458

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Fri 9/5

11:45 am-8:18 pm

1 stop13h 33m

Washington, D.C. Reagan-National

Sat 9/13

11:50 am-5:30 am

1 stop12h 40m

$477

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Fri 5/16

9:50 am-7:43 pm

1 stop14h 53m

Washington, D.C. Reagan-National

Tue 5/20

11:15 am-7:20 am

1 stop15h 05m

$520

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Sun 6/15

9:50 am-8:53 am

1 stop28h 03m

Washington, D.C. Reagan-National

Mon 6/30

8:40 pm-8:15 am

1 stop30h 35m

$538

ShannonWashington, D.C.

SNN - DCA

SNNDCA

Shannon

Mon 5/19

12:30 pm-2:36 pm

1 stop31h 06m

Washington, D.C. Reagan-National

Mon 5/26

1:00 pm-7:30 am

1 stop13h 30m

$540

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Tue 6/3

7:00 pm-3:49 pm

2 stops25h 49m

Washington, D.C. Reagan-National

Sun 6/8

11:00 am-10:20 am

2 stops18h 20m

$594

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Mon 6/2

10:40 am-4:55 pm

1 stop11h 15m

Washington, D.C. Reagan-National

Mon 6/9

6:50 pm-9:00 am

1 stop9h 10m

$606

CorkWashington, D.C.

ORK - DCA

ORKDCA

Cork

Wed 10/22

11:45 am-10:55 pm

2 stops16h 10m

Washington, D.C. Reagan-National

Fri 10/31

3:59 pm-11:10 am

2 stops15h 11m

$606

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Fri 6/6

12:40 pm-10:45 pm

2 stops39h 05m

Washington, D.C. Reagan-National

Mon 6/9

6:07 am-6:15 pm

2 stops31h 08m

$610

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Sun 6/15

1:45 pm-9:29 pm

2 stops12h 44m

Washington, D.C. Reagan-National

Sun 6/22

1:44 pm-6:30 am

2 stops11h 46m

$657

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 33 results

Best time to book a flight from Ireland to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National 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. Reagan-National Airport

Rainfall in Reagan-National by month

In terms of precipitation, rainfall in Washington, D.C. Reagan-National Airport 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. Reagan-National Airport when rainfall is around 2.6 in.

Temperature in Reagan-National by month

If weather is an important factor for your trip to Washington, D.C. Reagan-National Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 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 Reagan-National

To help decide which airline to fly from Ireland to Washington, D.C., see what other customers have to say about Delta, Finnair and Air France. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,934 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

7,934 reviews

Delta

8.0

Very good

7,934 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

1,275 reviews

Delta

8.0

Very good

7,934 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

1,446 reviews

Delta

8.0

Very good

7,934 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

United Airlines

7.4

Good

8,696 reviews

Delta

8.0

Very good

7,934 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

JetBlue

7.3

Good

2,923 reviews

Delta

8.0

Very good

7,934 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. Reagan-National Airport one-way?
For one-way options, check prices for WestJet. According to our data, you can fly for as low as $447. Users have also found prices from $455 and $507 on JetBlue and Icelandair, respectively.
What are the most popular routes from Ireland to Washington, D.C. Reagan-National Airport?
When deciding which route to take from Ireland to Washington, D.C. Reagan-National Airport consider Dublin - Washington, D.C. Reagan-National, Cork - Washington, D.C. Reagan-National or Shannon - Washington, D.C. Reagan-National as they are the most popular.
Can I find deals for flights from Ireland to Reagan-National that include hotel bookings?
Yes. In addition to deals on Ireland to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ireland to Reagan-National?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to Reagan-National.
Can I find deals for business class flights from Ireland to Reagan-National?
Yes. Cheapflights offers flight deals from Ireland to Reagan-National 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. Reagan-National Airport?
Currently, February is the cheapest month in which you can book a flight from Ireland to Washington, D.C. Reagan-National Airport (average of $278). Flying from Ireland to Washington, D.C. Reagan-National Airport in June is currently the most expensive (average of $344). 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

Arlington

Woodbridge

Tysons

Fairfax

Springfield

Rockville

Fredericksburg

Silver Spring

Gaithersburg

Linthicum Heights

Falls Church

Laurel

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Herndon

Bowie

National Harbor

Oxon Hill

Reston

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$447+ Cheap flights from Ireland to Reagan-National (DCA)

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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ireland to Reagan-National with Cheapflights

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3. Compare prices and book

Cheap flight deals from Ireland to Reagan-National

Keep the following information in mind while searching for Ireland to Reagan-National flight deals. Data was last updated May 1, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Ireland to Reagan-National

Cheapest flights from Ireland to Reagan-NationalExplore the most affordable flight options available from Ireland to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Explore the most affordable flight options available from Ireland to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Ireland to Reagan-National

Have a flexible travel schedule? Discover the best time to fly to Reagan-National from Ireland with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ireland to Washington, D.C. Reagan-National Airport

Rainfall in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average rainfall totals by month.

Temperature in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average temperature totals by month.

Reviews of airlines servicing Reagan-National

To help decide which airline to fly from Ireland to Washington, D.C., see what other customers have to say about Delta, Finnair and Air France. You can also see how each airline stacks up 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 Reagan-National. 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. Reagan-National Airport one-way?

What are the most popular routes from Ireland to Washington, D.C. Reagan-National Airport?

Can I find deals for flights from Ireland to Reagan-National that include hotel bookings?

How can I find direct flights from Ireland to Reagan-National?

Can I find deals for business class flights from Ireland to Reagan-National?

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

Traveling to a place near Ireland?

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Alternative routes for Ireland to Reagan-National

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Cheapest flights from Ireland to Reagan-National
Explore the most affordable flight options available from Ireland to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.