$456 Cheap Flights from Dublin (DUB) to Washington (IAD)

View $456 flight on Fri, Feb 6, 2026Opens in a new window

Popular airlines from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Dublin to Washington (DUB-IAD)

Prices were available within the past 7 days and start at $456 for one-way flights and $426 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Dec 11 - Mon, Dec 15
DUB
Dublin
IAD
Washington
$426 Roundtrip, found 6 days ago
$426
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Dec 11 from Dublin to Washington, returning Mon, Dec 15, priced at $426 found 6 days ago
Icelandair
Fri, Jan 23 - Thu, Jan 29
DUB
Dublin
IAD
Washington
$427 Roundtrip, found 11 hours ago
$427
Roundtrip
found 11 hours ago
Select Icelandair flight, departing Fri, Jan 23 from Dublin to Washington, returning Thu, Jan 29, priced at $427 found 11 hours ago
American Airlines
Thu, Dec 11 - Mon, Dec 15
DUB
Dublin
IAD
Washington
$430 Roundtrip, found 6 days ago
$430
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Dec 11 from Dublin to Washington, returning Mon, Dec 15, priced at $430 found 6 days ago
Icelandair
Wed, Dec 3 - Sun, Dec 7
DUB
Dublin
IAD
Washington
$445 Roundtrip, found 1 day ago
$445
Roundtrip
found 1 day ago
Select Icelandair flight, departing Wed, Dec 3 from Dublin to Washington, returning Sun, Dec 7, priced at $445 found 1 day ago
Icelandair
Thu, Dec 11 - Mon, Dec 15
DUB
Dublin
IAD
Washington
$445 Roundtrip, found 6 days ago
$445
Roundtrip
found 6 days ago
Select Icelandair flight, departing Thu, Dec 11 from Dublin to Washington, returning Mon, Dec 15, priced at $445 found 6 days ago
British Airways
Fri, Dec 26 - Sat, Jan 17
DUB
Dublin
IAD
Washington
$451 Roundtrip, found 5 days ago
$451
Roundtrip
found 5 days ago
Select British Airways flight, departing Fri, Dec 26 from Dublin to Washington, returning Sat, Jan 17, priced at $451 found 5 days ago
Scandinavian Airlines
Fri, Jan 23 - Thu, Jan 29
DUB
Dublin
IAD
Washington
$452 Roundtrip, found 11 hours ago
$452
Roundtrip
found 11 hours ago
Select Scandinavian Airlines flight, departing Fri, Jan 23 from Dublin to Washington, returning Thu, Jan 29, priced at $452 found 11 hours ago
TAP Portugal
Fri, Jan 23 - Thu, Jan 29
DUB
Dublin
IAD
Washington
$463 Roundtrip, found 11 hours ago
$463
Roundtrip
found 11 hours ago
Select TAP Portugal flight, departing Fri, Jan 23 from Dublin to Washington, returning Thu, Jan 29, priced at $463 found 11 hours ago
Iberia
Wed, Jan 21 - Sun, Jan 25
DUB
Dublin
IAD
Washington
$518 Roundtrip, found 13 hours ago
$518
Roundtrip
found 13 hours ago
Select Iberia flight, departing Wed, Jan 21 from Dublin to Washington, returning Sun, Jan 25, priced at $518 found 13 hours ago
Lufthansa
Mon, Nov 17 - Sun, Nov 23
DUB
Dublin
IAD
Washington
$526 Roundtrip, found 5 days ago
$526
Roundtrip
found 5 days ago
Select Lufthansa flight, departing Mon, Nov 17 from Dublin to Washington, returning Sun, Nov 23, priced at $526 found 5 days ago

Find the cheapest month to fly from Dublin (DUB) to Washington (IAD)

March is typically the cheapest month to fly

From $296 - $707 per traveler.

Alternative airports near Washington

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ronald Reagan Washington National DCA. Closest option available. Average driving time to city center is 8 minutes. Flights from $1,017
DCA
Ronald Reagan Washington National
Closest
Average driving time to city center8 min
Flights from $1,017
Flights from Dublin (DUB) to Washington (IAD)
Origin airport
Dublin
Destination airport
Washington Dulles Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United
Roundtrip price
$425
Distance
3395 mi
Average flight time
3 hours 15 mins

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 December. 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 $456 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 Washington Dulles Intl. Airport (IAD) cost?
Get a cheap one-way flight from $456 or cheap return flight from $426 from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD)?
The cheapest month to fly from DUB to IAD is December, when there's less demand. Off-peak months are typically when airlines offer lower prices between these airports.
Which airlines fly direct from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD)?
When departing from Dublin Airport (DUB), you can catch a nonstop flight to Washington Dulles Intl. Airport (IAD) with Aer Lingus.
What is the cheapest airline that flies from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD)?
To find the cheapest airline that'll fly you from DUB to IAD, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to list the most affordable options first.
How many flights per day from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD)?
On average, there's only 1 nonstop flight taking off from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD) per day. If this doesn't work with your itinerary, think about flights with a layover. Just filter your search results on Expedia to include one or two stops to find a better alternative.
What are the most popular departure times for flights from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD)?
The 12 PM departures from DUB to IAD are typically the busiest. They can also be more expensive. If you want to save on your trip, pick a less crowded time to fly.
What day of the week has the most flights from DUB to IAD?
Fly on a Friday if you're after the best selection of flights from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD).
What is the earliest flight from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD)?
The first flight of the day out of Dublin Airport (DUB) is at around 12:30PM UTC+0. Hop on this flight and you'll reach Washington Dulles Intl. Airport (IAD) at approximately 3:40PM UTC-5. The total time in the air is 8h 10m.
How long does it take to fly from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD)?
The average flight time from DUB to IAD is 8 hours and 10 minutes, covering a distance of 3,400 mi.
What airline has the least delays from DUB to IAD?
Lufthansa has the strongest track record for on-time direct flights from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD), with an on-time rating of 86%. Use the Expedia App to see your flight schedule before you leave and receive notifications about any trip changes.
What is the best time to fly from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD)?
To land at Washington Dulles Intl. Airport (IAD) on schedule, select a flight that takes off from Dublin Airport (DUB) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**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)?
Compare your flight options from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD). This is the only Washington airport you can land at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD) last-minute?
Waiting until right before your break to book a ticket from DUB to IAD generally means paying more. While you may find some last-minute discounts, they aren't always guaranteed. Keep your travel plans flexible to maximize your chances of landing a bargain.
Is it cheaper to book a DUB to IAD flight and hotel package?
Securing a DUB to IAD flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Choose from our extensive range of accommodations and then add activities, flights and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Dublin Airport (DUB) to Washington Dulles Intl. Airport (IAD)?
Typically, you're able to cancel or reschedule your DUB to IAD flight. However, additional charges may apply, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you need further details, go to our Customer Service portal.

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*Available to One Key members.