$538 Cheap Flights from Washington (IAD) to Dublin (DUB)

View $538 flight on Wed, Jul 22, 2026Opens in a new window

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

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Cheap Flights from Washington to Dublin (IAD-DUB)

Prices were available within the past 7 days and start at $538 for one-way flights and $664 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Mon, Jan 18 - Tue, Jan 26
IAD
Washington
DUB
Dublin
$664 Roundtrip, found 11 hours ago
$664
Roundtrip
found 11 hours ago
Select Scandinavian Airlines flight, departing Mon, Jan 18 from Washington to Dublin, returning Tue, Jan 26, priced at $664 found 11 hours ago
Scandinavian Airlines
Sun, Sep 27 - Sun, Oct 4
IAD
Washington
DUB
Dublin
$669 Roundtrip, found 10 hours ago
$669
Roundtrip
found 10 hours ago
Select Scandinavian Airlines flight, departing Sun, Sep 27 from Washington to Dublin, returning Sun, Oct 4, priced at $669 found 10 hours ago
Scandinavian Airlines
Wed, Jan 13 - Tue, Jan 19
IAD
Washington
DUB
Dublin
$694 Roundtrip, found 10 hours ago
$694
Roundtrip
found 10 hours ago
Select Scandinavian Airlines flight, departing Wed, Jan 13 from Washington to Dublin, returning Tue, Jan 19, priced at $694 found 10 hours ago
Scandinavian Airlines
Sun, Sep 13 - Sat, Sep 19
IAD
Washington
DUB
Dublin
$699 Roundtrip, found 12 hours ago
$699
Roundtrip
found 12 hours ago
Select Scandinavian Airlines flight, departing Sun, Sep 13 from Washington to Dublin, returning Sat, Sep 19, priced at $699 found 12 hours ago
Scandinavian Airlines
Fri, Oct 2 - Sat, Oct 10
IAD
Washington
DUB
Dublin
$710 Roundtrip, found 10 hours ago
$710
Roundtrip
found 10 hours ago
Select Scandinavian Airlines flight, departing Fri, Oct 2 from Washington to Dublin, returning Sat, Oct 10, priced at $710 found 10 hours ago
TAP Portugal
Wed, Nov 25 - Mon, Nov 30
IAD
Washington
DUB
Dublin
$731 Roundtrip, found 13 hours ago
$731
Roundtrip
found 13 hours ago
Select TAP Portugal flight, departing Wed, Nov 25 from Washington to Dublin, returning Mon, Nov 30, priced at $731 found 13 hours ago
Turkish Airlines
Tue, Sep 15 - Wed, Sep 23
IAD
Washington
DUB
Dublin
$755 Roundtrip, found 13 hours ago
$755
Roundtrip
found 13 hours ago
Select Turkish Airlines flight, departing Tue, Sep 15 from Washington to Dublin, returning Wed, Sep 23, priced at $755 found 13 hours ago
Icelandair
Thu, Nov 19 - Fri, Nov 27
IAD
Washington
DUB
Dublin
$770 Roundtrip, just found
$770
Roundtrip
just found
Select Icelandair flight, departing Thu, Nov 19 from Washington to Dublin, returning Fri, Nov 27, priced at $770 just found
Aer Lingus
Sat, Jun 13 - Wed, Nov 4
IAD
Washington
DUB
Dublin
$805 Roundtrip, found 2 days ago
$805
Roundtrip
found 2 days ago
Select Aer Lingus flight, departing Sat, Jun 13 from Washington to Dublin, returning Wed, Nov 4, priced at $805 found 2 days ago
United
Wed, Sep 9 - Thu, Sep 17
IAD
Washington
DUB
Dublin
$805 Roundtrip, found 1 hour ago
$805
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Sep 9 from Washington to Dublin, returning Thu, Sep 17, priced at $805 found 1 hour ago

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 $890
DUB
Dublin Airport
CheapestClosest
Average driving time to city center14 min
Flights from $890

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

September is typically the cheapest month to fly

From $456 - $830 per traveler.

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) cost?
You can find cheap one-way flights from $538 and cheap return flights from $664 Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) with Expedia. One-way flights generally range between $421 and $4114, and roundtrip flights usually range from $686 to $5240. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
October is the cheapest month to fly from Washington, DC (IAD) to Dublin (DUB), with average round-trip fares around $665. This is about 14% lower than the average price throughout the year, as demand typically decreases after the summer. Other budget-friendly months include January and February.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
Choose from 2 airlines operating direct flights from IAD to DUB:

  • Aer Lingus operates around 13 direct flights from IAD to DUB every week
  • United operates around 13 direct flights from IAD to DUB every week

What is the cheapest airline that flies from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
Iberia is one of the cheapest airlines offering nonstop flights from Washington D.C. (IAD) to Dublin (DUB), with round-trip tickets starting from around $395. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
The best airline to fly with from Washington, DC (IAD) to Dublin (DUB) will differ from traveler to traveler. If you like to fly early, Aer Lingus offers early morning flights. If price is the most important factor, United typically offers the lowest fares. United offers the most daily flights from IAD to DUB, which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
For flights from Washington, DC (IAD) to Dublin (DUB), October and January are the best months to travel, with average return flight prices around $665. These months typically offer lower fares and a chance to experience Dublin with fewer tourists.*Prices based on flights available on Expedia in the last year.
How many flights per day from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
On average, there are around 3 nonstop flights per day from Washington Dulles Intl. (IAD) to (DUB). For more options, look at flights that include layovers.
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from IAD to DUB. To compare more early flights, use the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
The most popular departure times for flights from Washington, DC (IAD) to Dublin (DUB) are in the late evening, from 9pm to midnight. About 34% of passengers prefer this time window. Many major carriers, including British Airways and United Airlines, offer flights during this window. This timing works well because it allows you to enjoy a full day in Washington before heading to the airport.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
Flying nonstop from IAD to DUB takes around 7 hours, with the route covering approximately 3,396 miles. Flights with a layover typically take 4 hours 30 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
Business class seats are offered on the IAD to DUB route. Airlines that offer business class service on this route include:

  • Lufthansa
  • British Airways
  • Aer Lingus
  • Air Canada
  • United Airlines
  • SAS
  • Swiss International Air Lines
  • KLM
  • Air France
  • Turkish Airlines

First class cabins are available on:

  • Lufthansa
  • United Airlines
  • Swiss International Air Lines

How much is a business class flight from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
A direct, return business class ticket from Washington, DC (IAD) to Dublin (DUB) typically costs between $5,813 - $7,669. A non-stop, one-way business class flight is usually around $4,088 - $5,678. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) flight and hotel package?
Securing a Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) Dublin Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities 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 Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
If you booked your Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more 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
$664
Distance
3395 mi
Average flight time
12 hours 6 mins

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 2026. You can also book with separate airlines for your outbound and return journeys, from $538 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

*Flight schedules are subject to change.

*Available to One Key members.