IAD - DUB

$256 Find Cheap Flights from Washington Dulles Airport to Dublin - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$594
Typical prices: $657-$1,005
Icelandair
Sun 3/4Sun 3/11
IAD - DUB • 1 stop
Cheapest non-stop
$680
Typical prices: $670-$1,014
Aer Lingus
Fri 3/9Sun 3/18
IAD - DUB • Non-stop
Advice from real travelers
United Economy Plus adds up to 6 inches more legroom than standard economy.
Aer Lingus economy on A330 has 17.7-inch seats with a 31-inch pitch.
Expert advice
+1
Expert advice
+1
Nonstop flights
You can fly direct with Aer Lingus and United Airlines. Average duration is 6h 56m
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 92% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 12 weeks in advance save around 18% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 26% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $587 (round-trip)
Shortest trip • 10h 33m (one-way)
Insights
Insights
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We hope you love your trip to Dublin!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Dulles Intl to Dublin (IAD-DUB)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Dublin

Thu, Mar 4 - Thu, Mar 11
Icelandair Logo
7:40 pm - 10:15 amIAD  Washington, D.C. Dulles Intl-DUB Dublin
9h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
11:30 am - 6:30 pmDUB  Dublin-IAD Washington, D.C. Dulles Intl
12h 00m1 stop Reykjavik Keflavik Intl
$594Icelandair
Tue, Nov 24 - Tue, Dec 1
Icelandair Logo
7:40 pm - 10:15 amIAD  Washington, D.C. Dulles Intl-DUB Dublin
9h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
11:30 am - 6:30 pmDUB  Dublin-IAD Washington, D.C. Dulles Intl
12h 00m1 stop Reykjavik Keflavik Intl
$596Icelandair
Sat, Dec 5 - Thu, Dec 10
Multiple Airlines Logo
5:25 pm - 12:55 amIAD  Washington, D.C. Dulles Intl-DUB Dublin
26h 30m2 stops Lisbon Humberto Delgado Madrid Barajas
Multiple Airlines Logo
8:50 pm - 8:30 pmDUB  Dublin-IAD Washington, D.C. Dulles Intl
28h 40m2 stops Madrid Barajas Lisbon Humberto Delgado
$596Multiple Airlines
Tue, Jan 12 - Tue, Jan 19
Multiple Airlines Logo
5:25 pm - 8:10 pmIAD  Washington, D.C. Dulles Intl-DUB Dublin
21h 45m2 stops Lisbon Humberto Delgado Madrid Barajas
Multiple Airlines Logo
8:20 pm - 8:30 pmDUB  Dublin-IAD Washington, D.C. Dulles Intl
29h 10m2 stops Madrid Barajas Lisbon Humberto Delgado
$598Multiple Airlines
Tue, Mar 9 - Thu, Mar 18
Aer Lingus Logo
8:50 pm - 8:45 amIAD  Washington, D.C. Dulles Intl-DUB Dublin
6h 55mnonstop
Aer Lingus Logo
12:20 pm - 4:45 pmDUB  Dublin-IAD Washington, D.C. Dulles Intl
8h 25mnonstop
$680Aer Lingus
Tue, Apr 20 - Tue, Apr 27
Aer Lingus Logo
5:15 pm - 5:15 amIAD  Washington, D.C. Dulles Intl-DUB Dublin
7h 00mnonstop
Aer Lingus Logo
12:40 pm - 3:45 pmDUB  Dublin-IAD Washington, D.C. Dulles Intl
8h 05mnonstop
$683Aer Lingus
Sat, Mar 6 - Thu, Mar 11
United Airlines Logo
10:10 pm - 7:30 amIAD  Washington, D.C. Dulles Intl-DUB Dublin
28h 20m1 stop Newark
United Airlines Logo
9:00 am - 11:45 amDUB  Dublin-IAD Washington, D.C. Dulles Intl
31h 45m2 stops Toronto Pearson Intl Ottawa
$690United Airlines
Tue, Mar 9 - Tue, Mar 16
United Airlines Logo
6:00 am - 9:55 amIAD  Washington, D.C. Dulles Intl-DUB Dublin
22h 55m1 stop Newark
United Airlines Logo
8:00 am - 11:45 amDUB  Dublin-IAD Washington, D.C. Dulles Intl
31h 45m2 stops Toronto Pearson Intl Ottawa
$690United Airlines
Mon, Feb 1 - Tue, Feb 9
British Airways Logo
9:45 pm - 3:25 pmIAD  Washington, D.C. Dulles Intl-DUB Dublin
12h 40m1 stop London Heathrow
British Airways Logo
8:50 am - 3:40 pmDUB  Dublin-IAD Washington, D.C. Dulles Intl
11h 50m1 stop London Heathrow
$690British Airways
Mon, Apr 19 - Fri, Apr 23
British Airways Logo
5:40 pm - 9:40 amIAD  Washington, D.C. Dulles Intl-DUB Dublin
11h 00m1 stop London Heathrow
British Airways Logo
10:30 am - 5:25 pmDUB  Dublin-IAD Washington, D.C. Dulles Intl
11h 55m1 stop London Heathrow
$694British Airways
Booking Insights

Price, demand and travel trends for Washington, D.C. Dulles Intl Airport to Dublin flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Dublin?

Round-trip flights from Washington, D.C. Dulles Intl Airport to Dublin typically range from $657 to $1,005. The lowest price found in the past 5 days was $594, on Icelandair.

What's the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Dublin?

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Washington, D.C. Dulles Intl Airport to Dublin. It’s 7% cheaper than the average day, while Friday is the most expensive, with prices 6% higher.

What’s the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Dublin?

•January is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Dublin at $604 round-trip.
•June ($1,098) and December ($1,085) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 81% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Washington, D.C. Dulles Intl Airport to Dublin the cheapest?

Flights from Washington, D.C. Dulles Intl Airport to Dublin are cheapest 12 weeks before departure. Booking in this window typically costs about 18% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Dulles Intl to Dublin

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Aer Lingus

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Ramsey Qubein

Ramsey Qubein

Expert on DUB

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Key details for Washington, D.C. Dulles Intl Airport to Dublin flights

Low season

January

Cheapest flight

$256
Beat the crowds with an average 46% drop in travelers.
The most popular month to fly with an average 35% increase in travelers.
One-way flight from Washington, D.C. Dulles Intl Airport to Dublin

When to book flights from Dulles Intl to Dublin

Are your dates flexible? Find out the best times to travel from Dulles Intl to Dublin based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Flights from Dulles Intl to Dublin: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Dulles Intl to Dublin 
DaveFlew with Aer Lingus-Sep 2026
The Dublin Airport has NO rail service, so if making a rail connection, solid plans need to be made beforehand about where to go and how to get there.
IsabellaFlew with United Airlines-Sep 2026
My only tip is to put a small bag underneath bc you won't have room for much else.
Mary MargaretFlew with Aer Lingus-Jun 2025
Some people may be required to check their carryon bags, depending on flight, plane size, check-in crew, etc. Also, taller people should purchase aisle seats.

Your Washington, D.C. Dulles Intl Airport to Dublin flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from Washington, D.C. Dulles Intl Airport to Dublin?

    These are the earliest and latest flight times available from Washington, D.C. Dulles Intl Airport to Dublin:

    • Earliest: departs at 5:15 pm and lands at 12:11 am
    • Latest: departs at 11:20 pm and lands at 6:16 am.

    The flight takes about 6h 56m.

  • What cabin classes can I book on flights from Washington, D.C. Dulles Intl Airport to Dublin?

    Four cabin classes are available on flights from Washington, D.C. Dulles Intl Airport to Dublin:

    • Economy Class
    • Premium Economy Class
    • Business Class
    • First Class

    Prices vary by airline.

  • How long is a flight from Washington, D.C. Dulles Intl Airport to Dublin?

    A nonstop flight from Washington, D.C. Dulles Intl Airport to Dublin takes 6h 56m, covering 3,393 miles.

  • Do I need a passport to fly from Washington, D.C. Dulles Intl Airport to Dublin?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Washington, D.C. Dulles Intl Airport to Dublin flight?

    Round-trip flights from Washington, D.C. Dulles Intl Airport to Dublin range from $657 to $1,005, with an average of $820 over the past 12 months. Anything below $657 counts as a good deal.

  • How expensive are last-minute Washington, D.C. Dulles Intl Airport to Dublin flights?

    Last-minute fares on this route (booked within two weeks of departure) run 12% above the $820 route average. Book 12 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Washington, D.C. Dulles Intl Airport to Dublin?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $587 round-trip via Toronto Pearson Intl (YYZ), compared to $836 for nonstop.

  • What is the standard checked-bag allowance on flights from Washington, D.C. Dulles Intl Airport to Dublin?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $55–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Washington, D.C. Dulles Intl Airport to Dublin?

    The Boeing 757-200 family is used most often on this route, operated mainly by United Airlines and Lufthansa. Other aircraft seen on the route include Airbus A321neo variants.

  • How are flight departures from Washington, D.C. Dulles Intl Airport to Dublin spread across the day?

    Evening is the busiest departure period on Washington, D.C. Dulles Intl Airport to Dublin flights, with 66% of flights leaving in that window. Night departures account for 33%, morning flights for 1%, and afternoon flights for 0%.

  • How are flight prices from Washington, D.C. Dulles Intl Airport to Dublin looking right now?

    One-way fares from Washington, D.C. Dulles Intl Airport to Dublin are currently lower than usual. Average one-way flight prices are about $302, which is 44% below the typical average for this route.

  • What car rental options are available at Dublin Airport (DUB)?

    Dublin Airport (DUB) hosts 5 major car rental companies, with daily rates averaging $31 for economy cars. Top options include:

    • Budget
    • Sixt
    • Easirent
    • Europcar
    • Thrifty

  • Which airports can I use when flying from Washington, D.C. Dulles Intl Airport to Dublin?

    Flights from Washington, D.C. Dulles Intl Airport to Dublin usually depart from Washington, D.C. Dulles Intl (IAD) and arrive at Dublin (DUB).

  • What time of day has the fewest delays on flights from Washington, D.C. Dulles Intl Airport to Dublin?

    Afternoon flights have the fewest delays on this route, while evening departures tend to have the most.

  • At what point is a flight considered delayed from Washington, D.C. Dulles Intl Airport to Dublin?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Washington, D.C. Dulles Intl Airport to Dublin route, 12% of flights were delayed in the past 3 months, with delays averaging 3h 03m.

  • Which airports do connecting flights from Washington, D.C. Dulles Intl Airport to Dublin pass through?

    One-stop flights from Washington, D.C. Dulles Intl Airport to Dublin most commonly connect through:

    • Reykjavik Keflavik Intl (KEF) - 51% of one-stop connections
    • London Heathrow (LHR) - 15% of one-stop connections
    • Lisbon Humberto Delgado (LIS) - 9% of one-stop connections
    • Toronto Pearson Intl (YYZ) - 7% of one-stop connections

  • Can I save money by using flexible dates for flights from Washington, D.C. Dulles Intl Airport to Dublin?

    Yes. Flexible dates can save you up to 13% on flights from Washington, D.C. Dulles Intl Airport to Dublin. Tuesday is the cheapest departure day at $764 round-trip on average, while Friday is the most expensive at $873, a difference of $109.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from Washington, D.C. Dulles Intl Airport to Dublin?

    2 airlines operate flights between Washington, D.C. Dulles Intl Airport and Dublin. The airlines offering nonstop flights on this route include:

    • Aer Lingus
    • United Airlines

  • How much time can I save by choosing a different layover airport from Washington, D.C. Dulles Intl Airport to Dublin?

    Flying via Reykjavik Keflavik Intl (KEF) gives the shortest average 1-stop total travel time at 10h 33m, compared with 10h 34m via Montreal Pierre Elliott Trudeau Intl (YUL) and 12h 06m via Frankfurt am Main (FRA).

  • What is the time difference between Washington, D.C. Dulles Intl Airport and Dublin?

    Dublin is 5 hours ahead of Washington, D.C. Dulles Intl Airport (Irish Time vs Eastern Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Dublin?

    Some of the most popular sights in Dublin are St. Stephen's Green, St. Patrick's Cathedral and Aviva Stadium. These are among the most viewed places in Dublin on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Washington, D.C. Dulles Intl Airport to Dublin flights?

    Among airlines operating Washington, D.C. Dulles Intl Airport to Dublin flights:

    • Aer Lingus: offers extra legroom; offers free seat selection
    • United Airlines: offers extra legroom; offers free seat selection
    • Lufthansa: offers extra legroom; offers free seat selection
    • Iberia: offers free seat selection
    • American Airlines: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Washington, D.C. Dulles Intl Airport to Dublin flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Aer Lingus: a cabin bag and a checked bag in Economy Class
    • United Airlines: a cabin bag and a checked bag in Economy Class
    • Lufthansa: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

  • What types of flights are available from the Washington Dulles International Airport (IAD) to the Dublin Airport (DUB)?

    For those of you looking for quick and convenient flight routes, you will be happy to know that there are several direct flights from Washington to Dublin. These direct flights are usually operated by Aer Lingus, United Airlines, or Lufthansa. If you are looking to save money, search for a flight that requires a connection. These flights are usually on board American Airlines or United Airlines, with layovers in Charlotte (CLT), Montreal (YUL), or Toronto (YYZ).

  • How can I get from downtown Washington, D.C., to IAD?

    IAD is about 30min from downtown Washington, D.C., by car, so you can take a taxi or a rideshare. Or, you can use public transportation. You can take the Metrorail from downtown to the Wiehle-Reston East station and then catch the Silver Line Express bus to the airport.

  • How do I get from the Dublin Airport (DUB) to the Dublin city center?

    Dublin city center is about 20min by car from the airport depending on traffic, so you can easily hail a cab or order a rideshare like Uber. Or, you have the option to utilize the public bus routes 41 or 16 from the airport to the city center.

  • Can I exchange currency at DUB when I arrive?

    Yes, there are several currency exchange offices at the Dublin Airport. They are located at T1 Arrivals, T1 Departures, T1 Airside, T2 Baggage Hall, and T2 Check-In.

Your guide to booking Washington, D.C. Dulles Intl Airport to Dublin flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Friday. On this route, Tuesday flights average $764, about $109 less than Friday fares (12% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 12 weeks before you fly. On this route, that window historically saves about 18% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Washington, D.C. Dulles Intl Airport to Dublin trip for January. Fares historically average $604 round-trip in that month - typically $494 less than the most expensive month, which is June (based on the last 12 months).
  • For the best chance of arriving on time, fly with Aer Lingus. Over the past three months, 92% of Aer Lingus flights from Washington, D.C. Dulles Intl Airport to Dublin arrived on time, slightly above the route average of 88%. When flights on this route arrive late, they're delayed by an average of 3h 03m, so choosing an airline with strong on-time performance can make a difference if you're on a tight schedule.
  • If you have the time, taking a 1-stop flight through Toronto Pearson Intl Airport (YYZ) can be cheaper than flying direct. The cheapest layover option averages $587 round-trip on this route - about $249 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Dublin Airport.

    • Clayton Hotel Dublin Airport
    • Maldron Hotel Dublin Airport
    • Metro Hotel Dublin Airport
  • Are you going on an extended vacation to Dublin and will need to leave your car at the Washington Dulles International Airport (IAD) while you are gone? You have several options for long term parking. You can use either of the two parking garages, the economy lot, valet parking, or terminal parking. You can reserve your parking space online in advance.
  • If you are flying out of IAD with a pet, you will be relieved to know that there are pet relief areas located outside pre-security on both ends of the departures level of the terminal, as well as inside the terminal at gates A32 and D1.
  • Are you arriving early to IAD and need a way to kill time before you take off? Check out one of the many art exhibits that are part of the Public Art program, such as live performances, the Wonder of Wonders, the Daedalus 87, and more.
  • Both the Washington Dulles International Airport (IAD) and the Dublin Airport (DUB) offer assistance for those traveling with reduced mobility. IAD offers wheelchair service and assistance navigating the airport, while DUB offers these services as well as accessible transportation options. Notify your airline of what you will need well in advance of your flight.
  • If you are picking up a rental car when you arrive in Dublin, you should head to the rental car counters when you land at DUB. These counters are located in the Terminal 1 Arrivals Hall and the car park that is connected to Terminal 2.

Prefer to fly direct from Washington Dulles Airport to Dublin?

 
Find which airlines fly direct from Washington, D.C. Dulles Intl Airport to Dublin Airport, which days they fly and book direct flights.

Direct departures

Washington, D.C. Dulles Intl to Dublin

Monday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Tuesday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Wednesday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Thursday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Friday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Saturday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Sunday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

See more direct flights

Direct returns

Dublin to Washington, D.C. Dulles Intl

Monday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Tuesday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Wednesday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Thursday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Friday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Saturday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

Sunday

Aer Lingus,United Airlines

Aer Lingus,United Airlines

See more direct flights

More options for your flight from Dulles Intl to Dublin

Complete your trip to Dublin with a hotel stay or car rental