$247 Find Cheap Flights from Washington Dulles Airport to Ireland - Compare and Save

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 7/27. 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.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Dulles Intl to Ireland

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin1 stop$641
Shannon
Shannon1 stop$791
Cork
Cork1 stop$893
Milltown (Kerry)
Milltown (Kerry)1 stop$1,153
Knock
Knock2 stops$1,046
Donegal
Donegal2 stops$1,342
Dublin
Dublin1 stop$641
Shannon
Shannon1 stop$791
Cork
Cork1 stop$893
Milltown (Kerry)
Milltown (Kerry)1 stop$1,153
Knock
Knock2 stops$1,046
Donegal
Donegal2 stops$1,342

Book Cheap Dulles Intl to Ireland Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Ireland

Thu, Oct 29 - Mon, Nov 2
TAP AIR PORTUGAL Logo
6:25 pm - 10:25 am
IAD
-
DUB
12h 00m
1 stop
TAP AIR PORTUGAL Logo
11:10 am - 2:45 pm
DUB
-
IAD
32h 35m
1 stop
$641TAP AIR PORTUGAL
Mon, Nov 9 - Fri, Nov 13
Scandinavian Airlines Logo
8:30 pm - 10:45 am
IAD
-
DUB
33h 15m
2 stops
Scandinavian Airlines Logo
6:55 pm - 6:50 pm
DUB
-
IAD
28h 55m
2 stops
$643Scandinavian Airlines
Thu, Oct 29 - Fri, Nov 6
TAP AIR PORTUGAL Logo
6:25 pm - 10:25 am
IAD
-
DUB
12h 00m
1 stop
TAP AIR PORTUGAL Logo
4:25 am - 3:15 pm
DUB
-
IAD
15h 50m
1 stop
$663TAP AIR PORTUGAL
Wed, Aug 19 - Tue, Aug 25
Multiple Airlines Logo
8:30 pm - 12:05 am
IAD
-
DUB
22h 35m
2 stops
Multiple Airlines Logo
10:40 am - 8:24 pm
DUB
-
IAD
14h 44m
1 stop
$665Multiple Airlines
Tue, Sep 29 - Thu, Oct 15
Multiple Airlines Logo
8:25 pm - 1:40 pm
IAD
-
SNN
12h 15m
1 stop
Multiple Airlines Logo
9:55 am - 7:09 pm
SNN
-
IAD
38h 14m
2 stops
$791Multiple Airlines
Wed, Jul 29 - Wed, Aug 5
Delta Logo
5:26 pm - 2:40 pm
IAD
-
ORK
16h 14m
2 stops
Delta Logo
6:15 am - 6:33 pm
ORK
-
IAD
17h 18m
2 stops
$907Delta
Wed, Sep 2 - Wed, Sep 9
British Airways Logo
5:45 pm - 12:35 pm
IAD
-
NOC
13h 50m
1 stop
British Airways Logo
1:05 pm - 8:20 pm
NOC
-
IAD
12h 15m
1 stop
$1,068British Airways
Mon, Sep 14 - Tue, Sep 22
Aer Lingus Logo
8:55 pm - 12:35 pm
IAD
-
NOC
34h 40m
2 stops
Aer Lingus Logo
1:05 pm - 3:45 pm
NOC
-
IAD
31h 40m
2 stops
$1,084Aer Lingus
Wed, Sep 2 - Wed, Sep 9
British Airways Logo
5:15 pm - 12:35 pm
IAD
-
NOC
14h 20m
2 stops
British Airways Logo
1:05 pm - 7:40 pm
NOC
-
IAD
11h 35m
1 stop
$1,089British Airways
Mon, Sep 14 - Tue, Sep 22
Aer Lingus Logo
5:15 pm - 12:35 pm
IAD
-
NOC
14h 20m
2 stops
Aer Lingus Logo
1:05 pm - 8:20 pm
NOC
-
IAD
12h 15m
1 stop
$1,101Aer Lingus
Booking Insights

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?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Ireland from Washington, D.C. Dulles Intl Airport found in the last 5 days was to Dublin, at $794 round-trip. 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 5 days was $794.

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 at night, when round-trip flights cost $824 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 in the evening, which is peak travel time and where the average cost of a ticket is $828.

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

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $770 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 February, when tickets cost $358 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of round-trip tickets is $611 and $521 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.

Your flight ticket price will generally be cheaper if you fly to Ireland on a Wednesday and more expensive on a Friday. On your return trip to Washington Dulles Airport, you should consider flying back on a Wednesday, and avoid Saturdays for better deals.

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, which saves you about 24% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$247
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 10% lower 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 travelers 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 round-trip 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.

Reviews of the top 5 airlines serving 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.
7.4
United AirlinesOverall score based on 9834 reviews
7.1Entertainment
6.6Food
7.3Comfort
7.7Boarding
8.1Crew
Airline reviews

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

6.0 GoodEnrique, Jun 2026
IAD - LAX
Read more United Airlines reviews

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

Did not like that we couldn't complete check in on-line without providing pictures of our passports. Worry about identity theft. We had no delays and boarding was handled In an efficient manner.

Excellent! I got to Munich and was transferred to my Lufthansa flight quickly, in 15 to 20 minutes, so I did not miss my flight. However, I had checked my overhead bag at the boarding gate in Tampa. That got to Tunis the next day. That is to be expected.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Aer Lingus App never showed the gate and the board did not update until very close to the time the gate was due to close. Both planes departed late but no announcement was made which would have saved a run for the gate.

Flight delayed 45 minutes almost caused us to miss connection to transatlantic flight.

Vegetarian food options were pretty tasteless. Gob of rice with absolutely no protein, barely any vegetables, and poorly seasoned. Food was the major disappointment of an otherwise good flight experience. However, food is a differentiator on long haul flights.

We were an hour and a half late, which caused my rental car company to cancel my reservation. We had no car, had to take a taxi to our hotel, and then a taxi back to get a new car the next day. Sometimes lack of on-time performance can end up costing the passenger a lot of money, none of which is covered by the airline that operated the late flight.

Overall good experience. But seats were small and uncomfortable for the price. Good entertainment, staff friendly and attentive.

Flight was delayed no information given really . No food whatsoever on the plane . I think you should be able to put that on the app so people have a chance to buy food bring it with them . They said plane was very busy on way over but there should be enough for both flights as we pay full price for the service. No information or very slow on the app about the delays . Staff were lovely it’s not their fault so company not fare to passengers or staff .

Smooth quiet flight take off and landing both excellent. Food was mediocre. Boarding at gate was disorganized and unacceptable.

My only complaint is that during my 8-hour-long flight, the flight attendants came around with the coffee and tea cart twice instead of the alcoholic beverage cart. I would rather sleep on a plane than rush to the bathroom to take a dump. I asked the flight attendant if I could have a beer instead of coffee or tea. Unfortunately, she said the bar is closed. That tells me that she was too lazy to get me a beer on the plane. I was not happy about that.

Caring & friendly crew. Most important: got us SAFELY to our destination!

Friendly flight attendants, decent food if you can eat dairy.

As always, most AA flights that we fly are almost ALWAYS delayed and that too multiple times. Very frustrating

The small flights with Valet Luggage has a poor service

Overall a good experience, however Wifi was not working on the flight.

THe flight was an hour late. You got us on the plan and we sat on the ground for 45 minutes with no information from the pilot whatsoever. Worst flight this year.

Going non stop to lax like I paid for. Not stopping in MCI for gas. Too long of delays

Human interaction. Thought there would be more service-even a smile would have been nice.

Incoming flight was delayed, delaying boarding. It then took 30 mins to take off. Took 20 mins to get to a gate because they changed the gate last minute, crew weren’t ready so there was no one staffed to work the jet bridge. Boarding was so disorganized as is usual with American because everyone just stands around the gate regardless of boarding group.

Delays with no explanation. It could have been handled better.

Flight delay for mechanical. Inbound arrived on time. No one said why mechanical delay.

Flight boarded, departed and landed on time. Excellent service from flight attendant in FIRST

The flight itself was fine, even with a one-hour delay leaving on the Reykjavik tarmac (the lost time was made up during flight). Our experience at the Reykjavik airport on arrival was terrible due mostly to the one hour it took for passport control. Only two stations were open for our category, and the room was full with a huge crowd.

I liked the crew but not the uncomfortable seats and lack of movie and tv selection.

They cancelled our connecting flight resulting in another layover reaching our final destination 8 hours later than scheduled.

The Check-in process at CDG was confusing and the crew was not helpful. But the flight was on-time and that is most important to me.

At least one soda free, felt like I was nickeled to death.

On-time arrivals and departures. Crew helpful and friendly. Yet everything costs extra: seat selection, food, even airphones!

Friendly flight crew. Airplane (757) configured as a domestic flight (no lie-flat seats) & no advanced meal selection.

I had no idea that my ticket only paid for my right to get on the plane. They charged me $130 for my carry-on bag because it was 1 inch too big she claimed but it wasn’t! Then they wanted another fee for everything. I had no idea that Icelandair had changed to such a bargain basement airline. I was very disappointed.

Second time with Saga Premium, everything was fab, but the entertainment centre on both my flights didn't work, plus the seat on the NY to Rek flight (Airbus) was so solid and so uncomfortable. The 737Max flight's seat was much, much better.

Waiting area on top of stairs before Boarding the bus wasn’t great. Took a long time to load the bus to gate.

We sat in our seats on the tarmac for almost 3 hours due to storms. They would not give us water or a snack. We were to depart at 7.30 pm and it was about 10.30 when we took off. No dinner until much after that. Beef type noodle dish was terrible with about a teaspoon of beef in it. The breakfast sweet waffle with egg and sausage inside was horrible. An English muffin sandwich would have been much better. Food was the worst in all of our years of traveling the world.

Our screen kept turning off ...3 times...had to get crew attention to turn it on again

They messed up my seat so I didn’t get the one I paid for

Put me on standby; flight was late; missed my connecting flight; disaster

Flight attendants were fine, seats a bit hard but I use a cushion for extra support. The only issue was it was a bit too cool and I needed to ask for and received and extra blanket. I survived!!!

Very few things and/or people are excellent. It was very good.

Extremely uncomfortable seats. Experience was like a Frontier Airlines flight. Would not fly it again.

Very, very tight legroom. They must’ve jammed in an additional few rows of seat seating. Denver to Munich was the least legroom I’ve ever had on any flight, let alone a multi hour international journey. I will not take that flight again.

In my first flight with Air Canada we sat in the plane for 4:00pm to 6:30pm. Finally we were asked to get off the plane and we were told the flight was cancelled after 7:00pm There was o clear explanation of what was the problem. I was booked without my permission on a Delta Flight at 7:30pm that was leaving at 8:00pm and I still had to go get my luggage(my final destination was Rome with one stop in Toronto. The luggage claim for Canada was closed so had to return to finally get it on the luggage belt.. Of course I missed the Delta flight and all the next day flights were booked. I also lost what I paid for my stay in Rome because I did nt cancel in time. A complete nightmare.

Good food, overall very comfy. The flight was full so obviously not optimal, but it is what it is.

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

Information on your arrival and departure airports