IAD - DUB

€234 Find Cheap Flights from Washington Dulles Airport to Dublin – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return flight
€535
Typical prices: €590-€903
Icelandair
Sat 24/11Sun 2/12
IAD - DUB • 1 stop
Cheapest direct flights
€610
Typical prices: €602-€911
Aer Lingus
Fri 2/2Fri 23/2
IAD - DUB • Direct
Advice from real travellers
From Washington, D.C., Aer Lingus and United highlight premium long-haul comfort.
Dulles AeroTrain speeds terminal access; Dublin 24-hour buses reach the centre.
Expert advice
+1
Expert advice
+1
Direct flights
Every day
You can fly direct with Aer Lingus and United Airlines. Average duration is 6h 56m
Direct flights
+1
Direct flights
+1
Avoid delays
Aer Lingus
Most punctual • 92% on-time
Afternoon
Best time • Fewest delays
Insights
Insights
When to book
12 weeks
in advance
Our data shows that travellers who book at least 12 weeks in advance save around 18% compared to booking last minute.
Insights
Insights
When to travel
January
Cheapest • 26% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top stopover airports
Toronto Pearson Intl (YYZ)
Cheapest • Avg €527 (return)
Reykjavik Keflavik Intl (KEF)
Shortest trip • 10h 33m (one-way)
Insights
Insights
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you enjoy your trip to Dublin!
Flight Deals
Booking Insights
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 return flight deals from Dulles Intl to Dublin

Tue, 24 Nov - Tue, 1 Dec
Icelandair Logo
19:40 - 10:15IAD  Washington, D.C. Dulles Intl-DUB Dublin
9h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
11:30 - 18:30DUB  Dublin-IAD Washington, D.C. Dulles Intl
12h 00m1 stop Reykjavik Keflavik Intl
€535Icelandair
Fri, 5 Mar - Thu, 11 Mar
Icelandair Logo
19:40 - 10:15IAD  Washington, D.C. Dulles Intl-DUB Dublin
9h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
11:30 - 18:30DUB  Dublin-IAD Washington, D.C. Dulles Intl
12h 00m1 stop Reykjavik Keflavik Intl
€536Icelandair
Sun, 22 Nov - Wed, 2 Dec
Icelandair Logo
19:40 - 10:15IAD  Washington, D.C. Dulles Intl-DUB Dublin
9h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
11:30 - 18:30DUB  Dublin-IAD Washington, D.C. Dulles Intl
12h 00m1 stop Reykjavik Keflavik Intl
€537Icelandair
Thu, 25 Mar - Sun, 4 Apr
Icelandair Logo
20:40 - 10:15IAD  Washington, D.C. Dulles Intl-DUB Dublin
9h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
12:15 - 22:15DUB  Dublin-IAD Washington, D.C. Dulles Intl
15h 00m1 stop Reykjavik Keflavik Intl
€540Icelandair
Thu, 25 Mar - Sun, 4 Apr
Icelandair Logo
20:40 - 10:15IAD  Washington, D.C. Dulles Intl-DUB Dublin
9h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
12:15 - 22:15DUB  Dublin-IAD Washington, D.C. Dulles Intl
15h 00m1 stop Reykjavik Keflavik Intl
€541Icelandair
Sun, 22 Nov - Wed, 2 Dec
Icelandair Logo
19:40 - 10:15IAD  Washington, D.C. Dulles Intl-DUB Dublin
9h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
11:30 - 18:30DUB  Dublin-IAD Washington, D.C. Dulles Intl
12h 00m1 stop Reykjavik Keflavik Intl
€542Icelandair
Mon, 7 Dec - Thu, 17 Dec
Icelandair Logo
19:40 - 10:15IAD  Washington, D.C. Dulles Intl-DUB Dublin
9h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
11:30 - 18:30DUB  Dublin-IAD Washington, D.C. Dulles Intl
12h 00m1 stop Reykjavik Keflavik Intl
€543Icelandair
Mon, 29 Mar - Sun, 4 Apr
Icelandair Logo
20:30 - 11:05IAD  Washington, D.C. Dulles Intl-DUB Dublin
9h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
12:15 - 22:15DUB  Dublin-IAD Washington, D.C. Dulles Intl
15h 00m1 stop Reykjavik Keflavik Intl
€544Icelandair
Tue, 23 Mar - Fri, 2 Apr
Icelandair Logo
20:40 - 10:15IAD  Washington, D.C. Dulles Intl-DUB Dublin
9h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
12:15 - 22:15DUB  Dublin-IAD Washington, D.C. Dulles Intl
15h 00m1 stop Reykjavik Keflavik Intl
€545Icelandair
Thu, 25 Mar - Sat, 3 Apr
Icelandair Logo
20:40 - 10:15IAD  Washington, D.C. Dulles Intl-DUB Dublin
9h 35m1 stop Reykjavik Keflavik Intl
Icelandair Logo
12:15 - 19:20DUB  Dublin-IAD Washington, D.C. Dulles Intl
12h 05m1 stop Reykjavik Keflavik Intl
€546Icelandair
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 return flight from Washington, D.C. Dulles Intl Airport to Dublin?

Return flights from Washington, D.C. Dulles Intl Airport to Dublin typically range from €590 to €903. The lowest price found in the past 5 days was €535 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 is 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 €542 return.
•June (€986) and December (€974) 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.

Find deals

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

Low season

January

Cheapest flight

€234
Beat the crowds with an average 46% drop in travellers.
The most popular month to fly with an average 35% increase in travellers.
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 return price

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

Insights shared by verified travellers who flew the route from Dulles Intl to Dublin 
DaveFlew with Aer Lingus-Sept 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-Sept 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 17:15 and lands at 00:11
    • Latest: departs at 23:20 and lands at 06:16.

    The flight takes about 6h 56m.

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

    Only Economy class is available on flights from Washington, D.C. Dulles Intl Airport to Dublin.

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

    A direct flight from Washington, D.C. Dulles Intl Airport to Dublin takes 6h 56m, covering 8,788 km.

  • 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?

    Return flights from Washington, D.C. Dulles Intl Airport to Dublin range from €590 to €903, with an average of €736 over the past 12 months. Anything below €590 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 €736 route average. Book 12 weeks before departure for the lowest fares.

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

    On this route, stopover flights are cheaper than direct options on average. Stopover fares average €527 return via Toronto Pearson Intl (YYZ), compared with €751 for direct.

  • 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 €49–€90 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% 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 €254, which is 48% below the typical average for this route.

  • Which car hire options are available at Dublin Airport (DUB)?

    Dublin Airport (DUB) hosts 5 major car hire companies, with daily rates starting from around €3 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 three 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 €686 return on average, while Friday is the most expensive at €784, a difference of €98.

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

  • Which 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 direct flights on this route include:

    • Aer Lingus
    • United Airlines

  • How much time can I save by choosing a different stopover 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 of 10h 33m, compared to 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 4 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 Bord Gáis Energy Theatre, 3Olympia Theatre, and St. Stephen's Green. 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

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

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 €686, about €98 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 €542 return in that month – typically €444 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 stopover option averages €527 return on this route – about €224 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

Prefer to fly direct from Washington, D.C. Dulles Intl 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 hire

Car hire in Dublin
Hotels in Dublin
Holidays in Dublin