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€241 Find Cheap Flights from Washington Dulles Airport to Ireland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Ireland departing on 28/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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Best Ireland Flight Deals from Dulles Intl

Cheapest return prices found by our users on KAYAK in the last 72 hours

Dublin
Dublin1 stop€383
Cork
Cork2 stops€756
Shannon
Shannon1 stop€597
Knock
Knock2 stops€955
Donegal
Donegal1 stop€906
Milltown (Kerry)
Milltown (Kerry)2 stops€667

Cheap Flight Deals from Dulles Intl to Ireland (IAD-IE0)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Dulles Intl to Ireland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from Dulles Intl to Ireland

Recommended return flight deals departing in the coming months from the most popular airlines that fly from Dulles Intl to Ireland.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
20:45 - 17:50IAD-DUB
16h 05m1 stop
13:00 - 16:15DUB-IAD
32h 15m1 stop
€383SWISS
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Tue, 9 Sep - Tue, 16 Sep
22:05 - 18:15IAD-DUB
15h 10m1 stop
12:40 - 19:59DUB-IAD
12h 19m1 stop
€391Scandinavian Airlines
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Tue, 26 Aug - Thu, 4 Sep
22:20 - 18:05IAD-DUB
14h 45m1 stop
18:50 - 15:20DUB-IAD
25h 30m1 stop
€483TAP AIR PORTUGAL
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Mon, 28 Jul - Mon, 6 Oct
17:20 - 05:10IAD-DUB
6h 50mdirect
16:35 - 19:30DUB-IAD
7h 55mdirect
€519Aer Lingus
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Wed, 30 Apr - Wed, 7 May
14:25 - 00:40IAD-DUB
29h 15m2 stops
10:20 - 10:16DUB-IAD
28h 56m2 stops
€534
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Wed, 28 May - Wed, 4 Jun
08:22 - 10:00IAD-DUB
20h 38m1 stop
11:30 - 09:41DUB-IAD
27h 11m1 stop
€541
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Sun, 8 Jun - Sat, 14 Jun
17:50 - 18:05IAD-DUB
19h 15m1 stop
05:30 - 20:05DUB-IAD
19h 35m1 stop
€562TAP AIR PORTUGAL
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Wed, 13 Aug - Sat, 23 Aug
17:20 - 05:10IAD-DUB
6h 50mdirect
16:35 - 19:30DUB-IAD
7h 55mdirect
€565Aer Lingus
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Tue, 27 May - Tue, 10 Jun
13:30 - 12:35IAD-DUB
18h 05m1 stop
13:35 - 11:45DUB-IAD
27h 10m1 stop
€595Turkish Airlines
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Thu, 24 Apr - Fri, 2 May
13:30 - 15:55IAD-DUB
21h 25m1 stop
10:35 - 19:45DUB-IAD
38h 10m1 stop
€612Turkish Airlines
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Thu, 24 Apr - Tue, 29 Apr

KAYAK's insights & trends for Dulles Intl to Ireland flights

Get data-powered insights and trends into flights from Dulles Intl to Ireland to help you find the cheapest flights, the best time to fly, and much more.

What is the cheapest Washington, D.C. Dulles Intl Airport to Ireland flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Washington, D.C. Dulles Intl Airport to Ireland.
The cheapest ticket to Ireland from Washington, D.C. Dulles Intl Airport found in the last 72 hours was to Dublin, at €842 return. The most popular route is from Washington, D.C. Dulles Intl Airport (IAD) to Dublin (DUB), and the cheapest round-trip airline ticket found on this route in the last 72 hours was €842.

What is the cheapest time of day to fly to Ireland?

The average price for all round-trip flights from Washington, D.C. Dulles Intl Airport to Ireland depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Ireland is generally in the evening, when retur flights cost €885 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Ireland is generally at night, which is peak travel time and where the average cost of a ticket is €944.

Can I save money by flying with a stopover from Washington, D.C. Dulles Intl Airport to Ireland?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.
Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 1 stop stopover the cheapest option at €859 on average.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Ireland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Ireland, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Ireland is November, when tickets cost €524 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is €989 and €914 respectively.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Ireland?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Ireland clicked on KAYAK for each day over the last 12 months.
For Washington Dulles Airport to Ireland, Monday is the cheapest day to fly on average and Wednesday is the most expensive. Flying from Ireland back to Washington Dulles Airport, the best deals are generally found on Monday, with Saturday being the most expensive.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Ireland?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Ireland, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below-average price on the flight from Washington, D.C. Dulles Intl Airport to Ireland, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.
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Good to know

Low season

February

High season

August

Cheapest flight

€241
Best time to beat the crowds (30% less expensive on average)
Most popular time to fly (4% more expensive on average)
Flight from Washington Dulles Airport to Dublin

FAQs - booking Ireland flights

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Ireland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Ireland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Ireland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington Dulles Airport to Ireland is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Ireland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from Washington Dulles Airport to Ireland with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Ireland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Washington Dulles Airport to Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Dulles Intl to Ireland

Need help choosing which airline to fly with from Dulles Intl to Ireland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.0
Aer LingusOverall score based on 1062 reviews
6.7Entertainment
6.4Food
7.0Comfort
7.2Boarding
7.9Crew
Airline reviews

Gate agents kind of serious. Had to wait til arriving at gate to choose seats. Thankfully they did give us seats together! And grateful the honored our age, giving us seats at the front.

10.0 ExcellentRALPH, Feb 2025BOS - TPA
Read more Aer Lingus reviews

Gate agents kind of serious. Had to wait til arriving at gate to choose seats. Thankfully they did give us seats together! And grateful the honored our age, giving us seats at the front.

Very polite and helpful staff. Jet blue…ok, but not as helpful!..

Seat was very uncomfortable. The worst in all of my travels. It sagged in the middle, worse than anything any airline can offer. Not flying aer lingus again.

My Aer Lingus flight (booking ref # 2SU4LF) was the worst travel experience I have ever dealt with. My flight from Paris to Dublin was delayed by over 2 hours which caused me to miss my connecting flight back to the US. I was not able to be rebooked on a new flight for another 3 days. When I finally made it on my rescheduled flight, it was delayed AGAIN, causing me to miss my connecting flight from New York to Boston. At this point I decided to just rent a car since the next flight I would have been able to get in wasn’t for another 5 hours. It was a complete nightmare experience and I will never fly Aer Lingus again. I have requested a refund from the booking company I placed my order with.

They couldn't do through check-in for us. They took 2 hours to issue just one leg of the boarding pass. They had no idea to handle the case of passengers who travels to USA via Dublin airport. we had tough time time Dublin airport as boarding pass for the US flight was not pre-issued. Hope Aer Lingus will learn to handle such cases which they couldn't learn in in the past 50 years of the service.

Really lovely trip and flight. The flight staff were so accommodating and warm throughout!

Very sad, couldn't stop crying. Was an hour delay in Ireland and when we got to Canada the flight was boarded and couldn't get on. Was the last flight of the day. Now in a hotel waiting on a stand by.I have to got o work, so I'll go first available while my son stays in the hotel til one's available

Both flights late. Almost missed connecting flight and flight staff not willing to help expedite us off the plane.

Very pleasant staff, there was some turbulence but the captain was very apologetic and gave notice where possible.

Amenity kits were never handed out. There was zero friendliness and assistance by crew. Food was uneatable. One drink was offered and no wine, with dinner or before or after. Cocktails and beverages were not encouraged and when I asked for water, none was given. Poorest, most cramped business class flight I’ve ever been on.

Everything you need to know for your flight from Dulles Intl to Ireland

Information on your arrival and departure airports

Washington Dulles Airport (IAD)

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