£378 Cheap Flights from Washington (IAD) to Dublin (DUB)

View £378 flight on Wed, 30 Sept 2026Opens in a new window

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

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 25% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at £378 for one-way flights and £523 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Thu, 24 Sept - Thu, 1 Oct
IAD
Washington
DUB
Dublin
£523 Return, found 1 day ago
£523
Return
found 1 day ago
Select Scandinavian Airlines flight, departing Thu, 24 Sept from Washington to Dublin, returning Thu, 1 Oct, priced at £523 found 1 day ago
Scandinavian Airlines
Sun, 27 Sept - Sun, 4 Oct
IAD
Washington
DUB
Dublin
£528 Return, found 2 days ago
£528
Return
found 2 days ago
Select Scandinavian Airlines flight, departing Sun, 27 Sept from Washington to Dublin, returning Sun, 4 Oct, priced at £528 found 2 days ago
Scandinavian Airlines
Sat, 10 Oct - Sat, 17 Oct
IAD
Washington
DUB
Dublin
£529 Return, found 3 days ago
£529
Return
found 3 days ago
Select Scandinavian Airlines flight, departing Sat, 10 Oct from Washington to Dublin, returning Sat, 17 Oct, priced at £529 found 3 days ago
Scandinavian Airlines
Sun, 27 Sept - Sun, 4 Oct
IAD
Washington
DUB
Dublin
£550 Return, found 2 days ago
£550
Return
found 2 days ago
Select Scandinavian Airlines flight, departing Sun, 27 Sept from Washington to Dublin, returning Sun, 4 Oct, priced at £550 found 2 days ago
Scandinavian Airlines
Sat, 19 Sept - Sat, 26 Sept
IAD
Washington
DUB
Dublin
£551 Return, found 20 hours ago
£551
Return
found 20 hours ago
Select Scandinavian Airlines flight, departing Sat, 19 Sept from Washington to Dublin, returning Sat, 26 Sept, priced at £551 found 20 hours ago
TAP Portugal
Mon, 16 Nov - Mon, 30 Nov
IAD
Washington
DUB
Dublin
£563 Return, found 18 hours ago
£563
Return
found 18 hours ago
Select TAP Portugal flight, departing Mon, 16 Nov from Washington to Dublin, returning Mon, 30 Nov, priced at £563 found 18 hours ago
Turkish Airlines
Thu, 24 Sept - Thu, 1 Oct
IAD
Washington
DUB
Dublin
£566 Return, found 1 day ago
£566
Return
found 1 day ago
Select Turkish Airlines flight, departing Thu, 24 Sept from Washington to Dublin, returning Thu, 1 Oct, priced at £566 found 1 day ago
Aer Lingus
Wed, 10 Jun - Wed, 18 Nov
IAD
Washington
DUB
Dublin
£595 Return, found 5 days ago
£595
Return
found 5 days ago
Select Aer Lingus flight, departing Wed, 10 Jun from Washington to Dublin, returning Wed, 18 Nov, priced at £595 found 5 days ago
British Airways
Tue, 1 Sept - Tue, 8 Sept
IAD
Washington
DUB
Dublin
£601 Return, found 1 day ago
£601
Return
found 1 day ago
Select British Airways flight, departing Tue, 1 Sept from Washington to Dublin, returning Tue, 8 Sept, priced at £601 found 1 day ago
Lufthansa
Tue, 1 Sept - Tue, 8 Sept
IAD
Washington
DUB
Dublin
£604 Return, found 1 day ago
£604
Return
found 1 day ago
Select Lufthansa flight, departing Tue, 1 Sept from Washington to Dublin, returning Tue, 8 Sept, priced at £604 found 1 day 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 centre is 14 minutes. Flights from £757
DUB
Dublin Airport
CheapestClosest
Average driving time to city centre14 min
Flights from £757

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

September is typically the cheapest month to fly

From £346 - £630 per traveller.

Frequently asked questions

What is the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
October is typically the cheapest month to fly from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB), with average return fares of approximately £924. This is about 14% lower than the average price throughout the year. October sees lower prices because it falls outside the peak summer travel season, when demand drops and airlines compete for bookings. Other cheap months to fly from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) include January and February.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
Enter IAD to DUB and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
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-Washington Dulles Intl.) to Dublin (DUB) will differ from traveller to traveller. If you like to fly early, EI offers early morning flights. If price is the most important factor, UA typically offers the lowest fares. UA offers the most daily flights from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB), which is brilliant 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)?
Based on booking data from the past year, the cheapest months to fly from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB) are typically October and January, with average return flight prices around £924. These months fall outside the peak summer travel season, which often means fewer crowds and a more relaxed travel experience in Dublin. While these might not be the most popular times to visit for warm weather, they offer a great opportunity to find more affordable fares.
How many flights per day from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
There are approximately 4 nonstop flights per day from Washington Dulles Intl. (IAD) to Dublin (DUB). For even more choice, look at flights that include layovers, as there are around 80 connecting flights per day. Some common connection points include Heathrow (LHR), Pearson Intl. (YYZ), and Hartsfield-Jackson Atlanta Intl. (ATL).
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 day of the week has the most flights from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
You'll typically find the most flights from Washington Dulles Intl. (IAD) to Dublin (DUB) on a Wednesday, with around 68 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include United Airlines, Delta Air Lines, and British Airways. Flight schedules are consistent throughout the week, so you'll have a good selection of flights no matter which day you choose.
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-Washington Dulles Intl.) to Dublin (DUB) are in the late evening, from 9pm to midnight. About 35% of passengers prefer this time. Many major carriers, including British Airways and Aer Lingus, offer flights during this window. This timing works well because you can maximise your day before your flight and arrive in Dublin ready to start your trip.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Dublin (DUB)?
Direct flights from IAD to DUB usually take about 7 hours, traveling roughly 3,396 miles. If you opt for a connecting flight, expect to add around 4 hours to your journey. 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)?
Select the "Business class" and "First class" filters when looking for IAD to DUB flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
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) flight and hotel package 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, British Airways, Delta, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United
Return price
£522
Distance
5432 km
Average flight time
12 hours 6 mins

Book with confidence

Compare flights from Washington to Dublin easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Washington to Dublin. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Dublin in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Washington Dulles Intl. to Dublin.  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Washington Dulles Intl. (IAD) to Dublin (DUB)

The easiest way to view the best deals on flights from Washington to Dublin today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Washington Dulles Intl. to Dublin start at just £523 and range up to £604.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Washington and Dublin
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Washington to Dublin flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Washington Dulles Intl. to Dublin for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Washington to Dublin easily and book with confidence

Explore a world of travel with Expedia

*Available to Expedia members.