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 $446. Users have also found prices from $459 and $511 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 $345). 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, Shannon - Washington, D.C. Reagan-National or Cork - 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 $564. You can even find prices in January for less than $564, 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 38%.

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.

$768+ Flights from Ireland to Washington, D.C. Reagan-National Airport

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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	$518 (Air France)
One-way from	$385 (Mytrip)
Popular in	July
Cheapest in	January
Average price	$552

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 ($137 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($21 potential savings vs. average RT price).

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Average for round-trip flights in April 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 April 24, 2025.

Wed 5/281:15 pmDUB - DCA

1 stop14h 30mAir France

Wed 6/45:10 pmDCA - DUB

1 stop11h 50mAir France

Deal found 4/23

$518

Wed 5/281:15 pmDUB - DCA

1 stop14h 30mKLM

Tue 6/34:39 pmDCA - DUB

1 stop13h 06mKLM

Deal found 4/23

$519

Wed 4/309:50 amDUB - DCA

1 stop15h 03mUnited Airlines

Fri 5/93:30 pmDCA - DUB

1 stop13h 15mUnited Airlines

Deal found 4/23

$523

Fri 5/29:00 amDUB - DCA

2 stops15h 43mMultiple Airlines

Wed 6/412:55 pmDCA - DUB

2 stops13h 50mMultiple Airlines

Deal found 4/23

$529

Wed 4/301:20 pmDUB - DCA

2 stops14h 25mDelta

Sat 5/108:59 amDCA - DUB

1 stop18h 46mDelta

Deal found 4/23

$535

Thu 5/16:00 amORK - DCA

2 stops19h 34mDelta

Mon 5/56:55 pmDCA - ORK

2 stops14h 45mDelta

Deal found 4/24

$539

Thu 5/19:50 amDUB - DCA

1 stop13h 13mAir Canada

Sat 5/108:40 pmDCA - DUB

1 stop30h 35mAir Canada

Deal found 4/23

$543

Thu 5/111:45 amDUB - DCA

1 stop11h 14mAmerican Airlines

Wed 5/73:54 pmDCA - DUB

1 stop9h 36mAmerican Airlines

Deal found 4/23

$554

Fri 5/210:40 amDUB - DCA

1 stop11h 15mJetBlue

Mon 5/1212:45 pmDCA - DUB

1 stop15h 15mJetBlue

Deal found 4/23

$611

Tue 5/1312:15 pmDUB - DCA

2 stops24h 45mIcelandair

Tue 5/206:50 pmDCA - DUB

2 stops37h 25mIcelandair

Deal found 4/22

$672

Thu 5/17:40 amSNN - DCA

2 stops17h 19mBritish Airways

Mon 5/54:16 pmDCA - SNN

2 stops14h 04mBritish Airways

Deal found 4/23

$682

Sat 6/711:45 amDUB - DCA

1 stop11h 37mIberia

Sat 6/1412:31 pmDCA - DUB

1 stop18h 09mIberia

Deal found 4/23

$697

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 April 24, 2025.

Wed 5/281:15 pmDUB - DCA

1 stop14h 30mAir France

Wed 6/45:10 pmDCA - DUB

1 stop11h 50mAir France

Deal found 4/23

$518

Wed 5/281:15 pmDUB - DCA

1 stop14h 30mKLM

Tue 6/34:39 pmDCA - DUB

1 stop13h 06mKLM

Deal found 4/23

$519

Wed 5/79:50 amDUB - DCA

1 stop14h 53mUnited Airlines

Sun 5/119:00 amDCA - DUB

1 stop17h 20mUnited Airlines

Deal found 4/23

$523

Mon 5/269:30 amDUB - DCA

1 stop15h 29mAmerican Airlines

Wed 6/41:44 pmDCA - DUB

1 stop10h 46mAmerican Airlines

Deal found 4/23

$554

Thu 5/812:45 pmDUB - DCA

2 stops14h 51mMultiple Airlines

Wed 5/145:00 pmDCA - DUB

2 stops18h 00mMultiple Airlines

Deal found 4/23

$588

Sat 5/2410:40 amDUB - DCA

1 stop14h 20mJetBlue

Thu 6/511:45 amDCA - DUB

1 stop16h 15mJetBlue

Deal found 4/23

$611

Wed 5/281:20 pmDUB - DCA

2 stops14h 25mDelta

Thu 6/51:15 pmDCA - DUB

2 stops14h 00mDelta

Deal found 4/23

$663

Tue 5/1312:15 pmDUB - DCA

2 stops24h 45mIcelandair

Tue 5/206:50 pmDCA - DUB

2 stops37h 25mIcelandair

Deal found 4/22

$672

Wed 6/189:50 amDUB - DCA

2 stops16h 58mAir Canada

Mon 6/308:40 pmDCA - DUB

1 stop30h 35mAir Canada

Deal found 4/23

$673

Mon 5/267:05 pmDUB - DCA

2 stops32h 40mScandinavian Airlines

Wed 6/411:00 amDCA - DUB

2 stops26h 15mScandinavian Airlines

Deal found 4/23

$681

Sat 6/711:45 amDUB - DCA

1 stop11h 37mIberia

Sat 6/1412:31 pmDCA - DUB

1 stop18h 09mIberia

Deal found 4/23

$697

Sat 6/76:00 amORK - DCA

2 stops21h 45mDelta

Sat 6/142:55 pmDCA - ORK

2 stops18h 45mDelta

Deal found 4/23

$724

Last-minute flights from Ireland to Reagan-National
Discover last-minute flight deals from Ireland to Reagan-National. Data last updated April 24, 2025 and is based on user searches.

Tue 4/2912:15 pmDUB - DCA

2 stops33h 40mIcelandair

Tue 5/65:40 pmDCA - DUB

2 stops12h 25mIcelandair

Deal found 4/22

$681

Wed 4/309:50 amDUB - DCA

1 stop15h 03mUnited Airlines

Fri 5/93:30 pmDCA - DUB

1 stop13h 15mUnited Airlines

Deal found 4/23

$523

Wed 4/301:20 pmDUB - DCA

2 stops14h 25mDelta

Sat 5/108:59 amDCA - DUB

1 stop18h 46mDelta

Deal found 4/23

$535

Wed 4/309:50 amDUB - DCA

1 stop15h 03mUnited Airlines

Thu 5/81:00 pmDCA - DUB

1 stop15h 45mUnited Airlines

Deal found 4/23

$523

Thu 5/16:00 amORK - DCA

2 stops19h 34mDelta

Mon 5/56:55 pmDCA - ORK

2 stops14h 45mDelta

Deal found 4/24

$539

Thu 5/19:50 amDUB - DCA

2 stops17h 03mAir Canada

Wed 5/79:40 amDCA - DUB

2 stops17h 35mAir Canada

Deal found 4/23

$543

Thu 5/111:45 amDUB - DCA

1 stop11h 14mAmerican Airlines

Wed 5/73:54 pmDCA - DUB

1 stop9h 36mAmerican Airlines

Deal found 4/23

$554

Thu 5/17:40 amSNN - DCA

2 stops17h 19mBritish Airways

Mon 5/54:16 pmDCA - SNN

2 stops14h 04mBritish Airways

Deal found 4/23

$682

Fri 5/29:00 amDUB - DCA

2 stops15h 43mMultiple Airlines

Wed 6/412:55 pmDCA - DUB

2 stops13h 50mMultiple Airlines

Deal found 4/23

$529

Fri 5/210:40 amDUB - DCA

1 stop14h 24mJetBlue

Thu 5/812:45 pmDCA - DUB

1 stop15h 15mJetBlue

Deal found 4/23

$611

Fri 5/210:45 amDUB - DCA

2 stops25h 56mTAP AIR PORTUGAL

Sat 5/1010:10 amDCA - DUB

2 stops18h 50mTAP AIR PORTUGAL

Deal found 4/23

$2,120

Fri 5/210:40 amDUB - DCA

1 stop11h 15mJetBlue

Mon 5/1212:45 pmDCA - DUB

1 stop15h 15mJetBlue

Deal found 4/23

$611

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 April 24, 2025.

Tue 5/2710:10 amDUB - DCA

2 stops17h 18mMultiple Airlines

Deal found 4/23

$385

Wed 5/2110:20 amDUB - DCA

3 stops17h 29mWestJet

Deal found 4/23

$446

Wed 5/2111:30 amDUB - DCA

1 stop16h 28mJetBlue

Deal found 4/23

$459

Wed 5/2112:15 pmDUB - DCA

2 stops24h 45mIcelandair

Deal found 4/23

$511

Wed 6/411:45 amDUB - DCA

1 stop15h 35mAmerican Airlines

Deal found 4/23

$629

Thu 5/298:15 pmDUB - DCA

2 stops24h 40mBritish Airways

Deal found 4/23

$633

Sat 6/77:40 amSNN - DCA

2 stops20h 27mAmerican Airlines

Deal found 4/23

$721

Thu 7/33:00 pmDUB - DCA

1 stop12h 10mKLM

Deal found 4/23

$823

Fri 6/271:05 pmSNN - DCA

2 stops14h 52mDelta

Deal found 4/23

$837

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

Wed 5/28

1:15 pm-10:45 pm

1 stop14h 30m

Washington, D.C. Reagan-National

Wed 6/4

5:10 pm-10:00 am

1 stop11h 50m

$518

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Wed 5/28

1:15 pm-10:45 pm

1 stop14h 30m

Washington, D.C. Reagan-National

Tue 6/3

4:39 pm-10:45 am

1 stop13h 06m

$519

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Wed 5/7

9:50 am-7:43 pm

1 stop14h 53m

Washington, D.C. Reagan-National

Sun 5/11

9:00 am-7:20 am

1 stop17h 20m

$523

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Mon 5/26

9:30 am-7:59 pm

1 stop15h 29m

Washington, D.C. Reagan-National

Wed 6/4

1:44 pm-5:30 am

1 stop10h 46m

$554

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Thu 5/8

12:45 pm-10:36 pm

2 stops14h 51m

Washington, D.C. Reagan-National

Wed 5/14

5:00 pm-4:00 pm

2 stops18h 00m

$588

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Sat 5/24

11:30 am-10:58 pm

1 stop16h 28m

Washington, D.C. Reagan-National

Wed 6/4

1:45 pm-9:00 am

1 stop14h 15m

$611

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Wed 5/28

1:20 pm-10:45 pm

2 stops14h 25m

Washington, D.C. Reagan-National

Thu 6/5

1:15 pm-8:15 am

2 stops14h 00m

$663

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Tue 5/13

12:15 pm-8:00 am

2 stops24h 45m

Washington, D.C. Reagan-National

Tue 5/20

6:50 pm-1:15 pm

2 stops37h 25m

$672

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Wed 6/18

9:50 am-9:48 pm

2 stops16h 58m

Washington, D.C. Reagan-National

Mon 6/30

8:40 pm-8:15 am

1 stop30h 35m

$673

DublinWashington, D.C.

DUB - DCA

DUBDCA

Dublin

Mon 5/26

7:05 pm-10:45 pm

2 stops32h 40m

Washington, D.C. Reagan-National

Wed 6/4

11:00 am-6:15 pm

2 stops26h 15m

$681

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 26 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, KLM and Finnair. 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

7,920 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

7,920 reviews

Delta

8.0

Very good

7,920 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

1,333 reviews

Delta

8.0

Very good

7,920 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

1,272 reviews

Delta

8.0

Very good

7,920 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

1,442 reviews

Delta

8.0

Very good

7,920 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

8,685 reviews

Delta

8.0

Very good

7,920 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 $446. Users have also found prices from $459 and $511 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, Shannon - Washington, D.C. Reagan-National or Cork - 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 $345). 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

Woodbridge

Fairfax

Tysons

Springfield

Rockville

Fredericksburg

Gaithersburg

Silver Spring

Linthicum Heights

Falls Church

Laurel

Easton

Herndon

Bowie

Towson

National Harbor

Oxon Hill

Reston

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$385+ 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 5/27. 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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2. Select your favorite providers

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 April 24, 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 April 24, 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 April 24, 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, KLM and Finnair. 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 April 24, 2025.