$273 Cheap Flights from Washington (IAD) to Dublin (DUB)

View $273 flight on Fri, Oct 24, 2025Opens in a new window

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

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Today's featured flight deals from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB)

Nonstop
Carry-on included
Lower price than typical

Cheap Flights from Washington to Dublin (IAD-DUB)

Prices were available within the past 7 days and start at $273 for one-way flights and $439 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Sat, Jan 10 - Sat, Jan 17
IAD
Washington
DUB
Dublin
$439 Roundtrip, found 8 hours ago
$439
Roundtrip
found 8 hours ago
Select Scandinavian Airlines flight, departing Sat, Jan 10 from Washington to Dublin, returning Sat, Jan 17, priced at $439 found 8 hours ago
TAP Portugal
Sun, Mar 8 - Mon, Mar 16
IAD
Washington
DUB
Dublin
$448 Roundtrip, found 1 hour ago
$448
Roundtrip
found 1 hour ago
Select TAP Portugal flight, departing Sun, Mar 8 from Washington to Dublin, returning Mon, Mar 16, priced at $448 found 1 hour ago
TAP Portugal
Wed, Apr 15 - Sun, Apr 19
IAD
Washington
DUB
Dublin
$452 Roundtrip, just found
$452
Roundtrip
just found
Select TAP Portugal flight, departing Wed, Apr 15 from Washington to Dublin, returning Sun, Apr 19, priced at $452 just found
TAP Portugal
Sat, Nov 8 - Mon, Nov 24
IAD
Washington
DUB
Dublin
$455 Roundtrip, found 2 days ago
$455
Roundtrip
found 2 days ago
Select TAP Portugal flight, departing Sat, Nov 8 from Washington to Dublin, returning Mon, Nov 24, priced at $455 found 2 days ago
TAP Portugal
Mon, May 4 - Wed, May 13
IAD
Washington
DUB
Dublin
$459 Roundtrip, found 2 days ago
$459
Roundtrip
found 2 days ago
Select TAP Portugal flight, departing Mon, May 4 from Washington to Dublin, returning Wed, May 13, priced at $459 found 2 days ago
TAP Portugal
Mon, Apr 27 - Sat, May 23
IAD
Washington
DUB
Dublin
$467 Roundtrip, found 5 hours ago
$467
Roundtrip
found 5 hours ago
Select TAP Portugal flight, departing Mon, Apr 27 from Washington to Dublin, returning Sat, May 23, priced at $467 found 5 hours ago
Aer Lingus
Tue, Nov 4 - Tue, Nov 18
IAD
Washington
DUB
Dublin
$486 Roundtrip, found 1 day ago
$486
Roundtrip
found 1 day ago
Select Aer Lingus flight, departing Tue, Nov 4 from Washington to Dublin, returning Tue, Nov 18, priced at $486 found 1 day ago
Icelandair
Sat, Mar 14 - Wed, Mar 18
IAD
Washington
DUB
Dublin
$548 Roundtrip, just found
$548
Roundtrip
just found
Select Icelandair flight, departing Sat, Mar 14 from Washington to Dublin, returning Wed, Mar 18, priced at $548 just found
Lufthansa
Wed, Oct 29 - Wed, Nov 12
IAD
Washington
DUB
Dublin
$575 Roundtrip, found 3 days ago
$575
Roundtrip
found 3 days ago
Select Lufthansa flight, departing Wed, Oct 29 from Washington to Dublin, returning Wed, Nov 12, priced at $575 found 3 days ago
United
Wed, Mar 4 - Fri, Mar 13
IAD
Washington
DUB
Dublin
$581 Roundtrip, found 7 hours ago
$581
Roundtrip
found 7 hours ago
Select United flight, departing Wed, Mar 4 from Washington to Dublin, returning Fri, Mar 13, priced at $581 found 7 hours ago

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

March is typically the cheapest month to fly

From $327 - $688 per traveler.

Alternative airports near Dublin

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

Select flight to Dublin Airport DUB. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $879
DUB
Dublin Airport
CheapestClosest
Average driving time to city center14 min
Flights from $879

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB) cost?
Grab a cheap one-way flight from $273 or cheap return flight from $439 from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB) 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 Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB)?
Flying in January may help you find better deals, as it's the cheapest month for flights between IAD and DUB. You'll often find the lowest prices during off-peak months.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB)?
Take a nonstop flight with Aer Lingus and head straight from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB).
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll take you from IAD to DUB. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB)?
On average, you'll only find 1 nonstop flight operating from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB) each day. If this doesn't fit your travel plans, consider flights with a layover. Simply filter your search on Expedia to include one or more stops to find the next best option.
What are the most popular departure times for flights from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB)?
The 5 PM departures from IAD to DUB are the busiest. Prices can be higher for these popular slots. If you're hoping to save money, choose a less crowded time to fly.
What day of the week has the most flights from IAD to DUB?
Friday offers the most flights from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB). Consider traveling on this day and you'll have a greater chance of finding a departure that fits your itinerary.
What is the earliest flight from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB)?
Washington Dulles Intl. Airport (IAD)'s first flight to Dublin Airport (DUB) leaves at approximately 5:10PM UTC-5. With a total travel time of 6h 45m, you'll land at around 4:55AM UTC+0.
How long does it take to fly from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB)?
It takes about 6 hours and 45 minutes to cover the 3,400 mi from IAD to DUB.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB)?
Opt for a flight from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**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 Dublin from Washington Dulles Intl. Airport (IAD)?
If you're traveling on a direct flight from Washington Dulles Intl. Airport (IAD) to Dublin, Dublin Airport (DUB) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB) last-minute?
Last-minute fares from IAD to DUB are usually more expensive. To secure the cheapest rates, start looking for flights early. That said, if your travel plans are flexible, it's possible to score a cheap ticket just before your departure.
Is it cheaper to book an IAD to DUB flight and hotel package?
Compared with arranging hotels and flights separately, booking an IAD to DUB flight and hotel package with Expedia could lead to significant savings. Better yet, having everything in one easy place takes the hassle out of planning your trip. Just secure your flights and choose from our wide range of hotels, then personalize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Dublin Airport (DUB)?
In most cases, you can reschedule or cancel your IAD to DUB flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you need more information, go to our Customer Service portal.

Travel information

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Dublin
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
$439
Distance
3395 mi
Average flight time
11 hours 57 mins

Book with confidence

Book with confidence

Washington to Dublin Flights

The cheapest times to fly from Washington to Dublin

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 Washington to Dublin are during the month of January. You can find some of the cheapest flights from Washington to Dublin with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Dublin

Sunday is one of the best days to book for cheap flights from Washington to Dublin: 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 Washington to Dublin

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 Washington to Dublin in 2025. You can also book with separate airlines for your outbound and return journeys, from $273 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 Washington to Dublin 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 Washington to Dublin 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.

 

Washington to Dublin Flights

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