$461 Cheap Flights from Dublin (DUB) to Washington (DCA)

View $461 flight on Tue, May 13, 2025Opens in a new window

Popular airlines from Dublin Airport (DUB) to Ronald Reagan Washington National Airport (DCA)

Find available prices by choosing your travel dates.

Cheap Flights from Dublin to Washington (DUB-DCA)

Prices were available within the past 7 days and start at $461 for one-way flights and $537 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Sep 9 - Fri, Sep 19
DUB
Dublin
DCA
Washington
$537 Roundtrip, found 2 days ago
$537
Roundtrip
found 2 days ago
Select United flight, departing Tue, Sep 9 from Dublin to Washington, returning Fri, Sep 19, priced at $537 found 2 days ago
United
Thu, Sep 4 - Wed, Sep 17
DUB
Dublin
DCA
Washington
$541 Roundtrip, found 1 day ago
$541
Roundtrip
found 1 day ago
Select United flight, departing Thu, Sep 4 from Dublin to Washington, returning Wed, Sep 17, priced at $541 found 1 day ago
United
Tue, Sep 9 - Fri, Sep 19
DUB
Dublin
DCA
Washington
$542 Roundtrip, found 2 days ago
$542
Roundtrip
found 2 days ago
Select United flight, departing Tue, Sep 9 from Dublin to Washington, returning Fri, Sep 19, priced at $542 found 2 days ago
Lufthansa
Mon, May 12 - Tue, Jul 1
DUB
Dublin
DCA
Washington
$544 Roundtrip, found 4 days ago
$544
Roundtrip
found 4 days ago
Select Lufthansa flight, departing Mon, May 12 from Dublin to Washington, returning Tue, Jul 1, priced at $544 found 4 days ago
United
Wed, May 14 - Tue, Jul 1
DUB
Dublin
DCA
Washington
$546 Roundtrip, found 4 days ago
$546
Roundtrip
found 4 days ago
Select United flight, departing Wed, May 14 from Dublin to Washington, returning Tue, Jul 1, priced at $546 found 4 days ago
United
Wed, May 14 - Mon, Jun 30
DUB
Dublin
DCA
Washington
$548 Roundtrip, found 4 days ago
$548
Roundtrip
found 4 days ago
Select United flight, departing Wed, May 14 from Dublin to Washington, returning Mon, Jun 30, priced at $548 found 4 days ago
American Airlines
Wed, Sep 10 - Wed, Oct 1
DUB
Dublin
DCA
Washington
$551 Roundtrip, just found
$551
Roundtrip
just found
Select American Airlines flight, departing Wed, Sep 10 from Dublin to Washington, returning Wed, Oct 1, priced at $551 just found
American Airlines
Mon, Jun 16 - Sun, Jul 13
DUB
Dublin
DCA
Washington
$551 Roundtrip, found 2 days ago
$551
Roundtrip
found 2 days ago
Select American Airlines flight, departing Mon, Jun 16 from Dublin to Washington, returning Sun, Jul 13, priced at $551 found 2 days ago
Air Canada
Thu, Sep 4 - Wed, Sep 17
DUB
Dublin
DCA
Washington
$553 Roundtrip, found 1 day ago
$553
Roundtrip
found 1 day ago
Select Air Canada flight, departing Thu, Sep 4 from Dublin to Washington, returning Wed, Sep 17, priced at $553 found 1 day ago
Swiss International Air Lines
Sat, Jun 14 - Tue, Jul 8
DUB
Dublin
DCA
Washington
$554 Roundtrip, found 6 days ago
$554
Roundtrip
found 6 days ago
Select Swiss International Air Lines flight, departing Sat, Jun 14 from Dublin to Washington, returning Tue, Jul 8, priced at $554 found 6 days ago
Flights from Dublin (DUB) to Washington (DCA)
Origin airport
Dublin
Destination airport
Ronald Reagan Washington National
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Delta, Iberia, Icelandair, JetBlue Airways, KLM, Scandinavian Airlines, TAP Portugal, United
Roundtrip price
$537
Distance
3383 mi

Dublin to Washington Flights

The cheapest times to fly from Dublin to Washington

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Dublin to Washington are during the month of September. You can find some of the cheapest flights from Dublin to Washington with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Dublin to Washington

Sunday is one of the best days to book for cheap flights from Dublin to Washington: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from Dublin to Washington

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Dublin to Washington in 2025. You can also book with separate airlines for your outbound and return journeys, from $461 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Dublin to Washington flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your Dublin to Washington airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

How much does a flight from Dublin Airport (DUB) to Ronald Reagan Washington National Airport (DCA) cost?
Discover the latest flight deals from DUB to DCA by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from DUB to DCA?
The cheapest flights from DUB to DCA are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from DUB to DCA?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from DUB to DCA. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from Dublin Airport (DUB) to Ronald Reagan Washington National Airport (DCA)?
There are no daily nonstop flights available from Dublin Airport (DUB) to Ronald Reagan Washington National Airport (DCA). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you’ll be on your way in no time.
What day of the week has the most flights from DUB to DCA?
You’ll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Dublin Airport (DUB) to Ronald Reagan Washington National Airport (DCA)?
To avoid potential delays on the Dublin Airport (DUB) to Ronald Reagan Washington National Airport (DCA) route, fly before 3 PM. Departures after this hour have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Washington from Dublin Airport (DUB)?
Browse your flight options from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD). This is the only airport in Washington you can arrive at if you’re taking a direct flight.
Is it cheaper to buy a plane ticket from Dublin Airport (DUB) to Ronald Reagan Washington National Airport (DCA) last-minute?
Booking your plane ticket from DUB to DCA just before your getaway is typically more expensive. However, if there’s some wiggle room with your travel times and dates, you could score a cheap last-minute fare.
Is it cheaper to book a DUB to DCA flight and hotel package?
You can save money by booking a DUB to DCA flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s simple to manage everything in one place. Once you’ve selected your ideal accommodations and flights, consider adding extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Dublin Airport (DUB) to Ronald Reagan Washington National Airport (DCA)?
In most cases, you’re able to cancel or reschedule your DUB to DCA flight. However, additional charges may apply, especially if you made your booking more than 24 hours ago. Check your itinerary for the airline’s guidelines and fees on flight changes, or if you need more details, head to our Customer Service portal.

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*Available to One Key members.