$280 Find Cheap Flights from Chicago O'Hare 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 O'Hare Intl to Ireland departing on 7/19. 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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1 adult, Economy, 0 bags

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Cheap Flights from O'Hare Intl to Ireland

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin1 stop$484
Shannon
Shannonnonstop$693
Cork
Cork1 stop$747
Knock
Knock2 stops$930
Dublin
Dublin1 stop$484
Shannon
Shannonnonstop$693
Cork
Cork1 stop$747
Knock
Knock2 stops$930

Book Cheap O'Hare 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 O'Hare 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 O'Hare Intl to Ireland

Wed, Aug 26 - Thu, Sep 3
Aer Lingus Logo
9:50 am - 5:10 am
ORD
-
DUB
13h 20m
1 stop
Aer Lingus Logo
1:20 pm - 9:00 am
DUB
-
ORD
25h 40m
1 stop
$484Aer Lingus
Tue, Sep 1 - Wed, Sep 9
Aer Lingus Logo
9:50 am - 5:10 am
ORD
-
DUB
13h 20m
1 stop
Aer Lingus Logo
1:20 pm - 7:48 pm
DUB
-
ORD
12h 28m
1 stop
$487Aer Lingus
Sun, Aug 16 - Wed, Aug 26
United Airlines Logo
6:05 pm - 7:30 am
ORD
-
SNN
7h 25mnonstop
United Airlines Logo
9:30 am - 11:50 am
SNN
-
ORD
8h 20mnonstop
$693United Airlines
Tue, Aug 11 - Wed, Aug 26
United Airlines Logo
6:05 pm - 7:30 am
ORD
-
SNN
7h 25mnonstop
United Airlines Logo
9:30 am - 11:50 am
SNN
-
ORD
8h 20mnonstop
$694United Airlines
Tue, Aug 11 - Wed, Aug 26
Delta Logo
6:00 pm - 11:10 am
ORD
-
SNN
11h 10m
1 stop
Delta Logo
1:05 pm - 9:52 pm
SNN
-
ORD
14h 47m
1 stop
$709Delta
Sun, Aug 16 - Wed, Aug 26
Multiple Airlines Logo
10:07 am - 11:10 am
ORD
-
SNN
19h 03m
1 stop
Multiple Airlines Logo
1:05 pm - 4:17 pm
SNN
-
ORD
33h 12m
2 stops
$712Multiple Airlines
Thu, Aug 6 - Wed, Aug 19
Delta Logo
1:59 pm - 2:40 pm
ORD
-
ORK
18h 41m
2 stops
Delta Logo
6:15 am - 9:47 pm
ORK
-
ORD
21h 32m
2 stops
$761Delta
Fri, Nov 6 - Tue, Nov 10
Multiple Airlines Logo
5:20 pm - 2:45 pm
ORD
-
ORK
15h 25m
1 stop
Multiple Airlines Logo
11:15 am - 2:25 pm
ORK
-
ORD
33h 10m
1 stop
$794Multiple Airlines
Mon, Aug 24 - Mon, Aug 31
British Airways Logo
7:05 pm - 12:35 pm
ORD
-
NOC
11h 30m
1 stop
British Airways Logo
1:05 pm - 11:30 am
NOC
-
ORD
28h 25m
2 stops
$947British Airways
Mon, Aug 24 - Mon, Aug 31
British Airways Logo
4:30 pm - 12:35 pm
ORD
-
NOC
14h 05m
2 stops
British Airways Logo
1:05 pm - 11:30 am
NOC
-
ORD
28h 25m
2 stops
$952British Airways
Booking Insights

KAYAK's insights & trends for O'Hare Intl to Ireland flights

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

What is the cheapest Chicago O'Hare 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 Chicago O'Hare Intl Airport found in the last 5 days was to Dublin, at $699 round-trip. The most popular route is from Chicago O'Hare Intl Airport (ORD) to Dublin (DUB), and the cheapest round-trip airline ticket found on this route in the last 5 days was $699.

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

The average price for all round-trip flights from Chicago O'Hare 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 $758 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 $825.

Can I save money by flying with a layover from Chicago O'Hare 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 1 stop layover the cheapest option at $927 on average.

What is the cheapest month to fly from Chicago O'Hare 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 Chicago O'Hare 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 Chicago O'Hare Intl Airport to Ireland is October, when tickets cost $103 (return) on average. On the other hand, the most expensive months are June and September, when the average cost of round-trip tickets is $2,366 and $2,072 respectively.

What’s the cheapest day of the week to fly from Chicago O'Hare Airport to Ireland?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to Ireland clicked on KAYAK for each day over the last 12 months.

When flying from Chicago O'Hare Airport to Ireland, you should consider leaving on a Wednesday and avoid Fridays if you are looking for the best rates. For your return to Chicago O'Hare Airport, you’ll find the best rates on Sundays and the most expensive ones on Mondays.

How far in advance should I book a flight from Chicago O'Hare 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 Chicago O'Hare 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 Chicago O'Hare Intl Airport to Ireland, you should book around 4 weeks before departure, which saves you about 34% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$280
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from Chicago O'Hare Airport to Shannon

FAQs - booking Ireland flights

  • How does KAYAK find such low prices on flights from Chicago O'Hare 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 Chicago O'Hare Airport to Ireland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Chicago O'Hare 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 Chicago O'Hare 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 Chicago O'Hare 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 Chicago O'Hare 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 Chicago O'Hare 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 O'Hare Intl to Ireland

 
Need help choosing which airline to fly with from O'Hare 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 9833 reviews
6.6Food
7.7Boarding
8.1Crew
7.3Comfort
7.1Entertainment
Airline reviews

Horrible! Several delays and then was cancelled! I spent over 24 hours in the airport and was unable to get a hotel or food voucher.

2.0 MediocreAnonymous, Jun 2026
ORD - BHM
Read more United Airlines reviews

Horrible! Several delays and then was cancelled! I spent over 24 hours in the airport and was unable to get a hotel or food voucher.

Smooth travel. Immediate update prior flight delay so I can arrange myself properly without too rush.

Boarded early; and arrived home 40 mins early. After a long flight, it’s nice to be back home early. These flights have no amenities; no snacks. So need to bring your own

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

Crew was friendly. Seats are too narrow, particularly when a big person is in the adjacent seat, but I understand this is due to smaller planes usually flight into Lincoln. I have experienced several flight delays going out and coming into Lincoln airport, I say maybe 50% or higher of the flights I've taken out of this airport have been delayed.

Great flight. Boarded efficiently. Arrived early at CLT. There was no in flight entertainment on this aircraft. Great crew.

The seat was comfortable. There was a lot of turbulence. If it weren't for that,it would have been okay.

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.

I’ve got 31F seat and window seat . My 2 co passengers was AA crew members and they were very rude attitude and when I was going to use bathroom their gestures was very different and awkward and the guy beside me completely occupied the hand rest and I was really uncomfortable

It was so much better than expected, Ohare is not such a pleasant experience but American Airlines with the new, clean aeroplane and free Wi-Fi was outstanding and the crew so pleasant and helpful.

It wa sort of on time; the cab was left with some trash

My pillow had a shoe print on it, when I asked if I can have another pillow, I was told “I’m sorry but it is one pillow per guest, do YOU want to turn it inside out” to which I responded , no thanks I will go without. This is generally not ok, but For the price tag I paid flying business this is absolutely unacceptable. Hopefully American Airlines can update their accommodations to bedding that is not tossed on the ground and stepped on, or at least have a couple of extra pillows in hand, incase someone had decided to step on the pillows for what ever reason

American Airlines II: Delay Boogaloo. Multiple gate changes, delays, boarded and then MORE delays. I hate to say this won’t matter, but posting stuff about major corporations in 2026 is a post-modern “scream into the void.” Was multiple hours late coming home, so there you go.

Our flight was cancelled while we are on our way to the airport. So, no notice. We were rescheduled to another airline with a 2 hour later takeoff and so arrived at our destination on time. We pre-paid American Airlines $190 to upgrade our seats. No refund. So no use for AA or Kayak.

Terrible, horrible, disappointing- without telling us they changed planes and moved and separated our seats to opposite sides - said they changed seats putting us together - got to airport to find no, they did not - we sat opposing sides of plane - food overly salty to inedible, never saw stewardess but once - it was terrible

The airplane was an old model, the overhead didn’t have enough room for people’s items and made boarding and boarding disappointing and stressful. Crew allowed passengers to bring more than the permitted baggage sizes.

Original flight was on time, then late, then changed gates...4 times. Once our newest plane came in, it was fine.

I almost missed my flight and they helped me out enormously

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.

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

I am not going to fillo this out for each leg of my trip. My first review holds for the experience

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.

The real reason why the flying experience with Icelandair ---was mediocre was because of not being able to enter DC airspace yesterday evening. This obviously was out of your control and do realize this is a safety issue. I did notice---that everything was being done to get us to Washington Dulles and we did arrive at Dulles SAFELY with just a 4 hour delay. Thank you!

The staff was kind and helpful. There was no food, and you needed to bring your own earphones to use the entertainment, which I didn’t know.

They wouldn’t check in my luggage even though I had one checked bag prepaid. So I took my bag to the gate and tried to check it in there and two employees scolded me for bringing a large bag to the gate. I told them I was trying to check it in and that it was prepaid, and they said they couldn’t guarantee that it would arrive at my destination but they finally let me drop it off when boarding the plane and pick it up right after exiting the plane. There was no food, and there was no entertainment.

Overall satisfied and would fly with them again. They could improve the check-in efficiency at BOS, we got backed up because it seemed there were passengers requiring much more time for check in.

Not bad but they lost 2 of my bags when I got to Florence

Couldn’t get boarding passes online, delayed an hour, and smallest amount of space on board I’ve ever encountered for such a long flight.

In general, I've had excellent experiences with Iberia flights and will continue to use them. In this last flight there were two things that didn't go right. I didn't get the kosher meal I had pre-requested when I had checked in on-line. Things worked out OK as we ended up eating the fish and vegetarian choices, which were really good. The other issue was that some movies for me and my wife started fine but after 8-12 minutes the content just switched to something else. The flight attendant reset our entertainment systems, but the problem persisted. We ended up choosing other movies/TV shows that did work fine.

Awful. They didn't even show concern that her connecting flight( Dallas to Mardrid) was gone/missing. I don't understand how that is even possible. Rudest answer from one of the crew was that American Airlines sold the tickets to somebody else. My daughter was not in the list.

The flight was canceled on a Thursday last minute. I lost thousands of dollars in hotels and car rental

Excellent lie flat seat for premium economy! Great staff. Bad food . Not so great entertainment. My bag didn’t make it either.

Really like the idea experience on this airline I will use again

Plane delayed due to weather. Plane boarded, then told to unboard due to a maintenance issue.

the seats were so cramped you could barely move. it was difficult to eat when passengers would recline their seats. the seats were so flimsy and unstable that whenever someone got in and out of their seat, it bounced like a spring back in your face. the movies were nice. the food was terrible. even though the conditions were terrible, they tried to pressure passengers to relocate their seats to accommodate adults who were related and wanted to sit next to each other, even after the passengers expressed that they did not want to move for that purpose. on the connecting flight, the “service” consisted of items for purchase. even though the flight was only 45 minutes, once again passengers (including me) were pressured to relocate for people to sit next to each other. they couldn’t be apart for 45 minutes? this was much less compelling than being apart for an 8 hour flight.

Everything went smoothly, and we even arrived 40min earlier than scheduled, on an Orland-Madrid route.

Everything you need to know for your flight from O'Hare Intl to Ireland

Information on your arrival and departure airports