$171 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 8/25. 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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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$366
Shannon
Shannon1 stop$536
Cork
Cork1 stop$741
Milltown (Kerry)
Milltown (Kerry)3 stops$781
Knock
Knock3 stops$917
Dublin
Dublin1 stop$366
Shannon
Shannon1 stop$536
Cork
Cork1 stop$741
Milltown (Kerry)
Milltown (Kerry)3 stops$781
Knock
Knock3 stops$917

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

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
$366Aer Lingus
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 - 7:52 pm
DUB
-
ORD
12h 32m
1 stop
$366Aer Lingus
Fri, Sep 11 - Fri, Sep 18
Iberia Logo
11:40 am - 6:30 am
ORD
-
DUB
12h 50m
1 stop
Iberia Logo
11:35 am - 2:00 pm
DUB
-
ORD
8h 25mnonstop
$384Iberia
Fri, Sep 11 - Fri, Sep 18
Multiple Airlines Logo
8:20 pm - 9:45 am
ORD
-
DUB
7h 25mnonstop
Multiple Airlines Logo
11:35 am - 1:40 pm
DUB
-
ORD
8h 05mnonstop
$455Multiple Airlines
Fri, Sep 11 - Sat, Sep 19
Multiple Airlines Logo
9:55 am - 5:10 am
ORD
-
DUB
13h 15m
1 stop
Multiple Airlines Logo
1:20 pm - 7:48 pm
DUB
-
ORD
12h 28m
1 stop
$482Multiple Airlines
Fri, Sep 11 - Fri, Sep 18
British Airways Logo
10:25 pm - 3:50 pm
ORD
-
SNN
11h 25m
1 stop
British Airways Logo
7:30 am - 2:55 pm
SNN
-
ORD
13h 25m
1 stop
$536British Airways
Thu, Oct 22 - Tue, Nov 3
TAP AIR PORTUGAL Logo
6:00 pm - 6:05 pm
ORD
-
DUB
18h 05m
1 stop
TAP AIR PORTUGAL Logo
4:55 pm - 3:30 pm
DUB
-
ORD
28h 35m
1 stop
$595TAP AIR PORTUGAL
Wed, Nov 4 - Sat, Nov 7
TAP AIR PORTUGAL Logo
7:00 pm - 11:20 pm
ORD
-
DUB
22h 20m
1 stop
TAP AIR PORTUGAL Logo
4:15 am - 3:30 pm
DUB
-
ORD
17h 15m
1 stop
$595TAP AIR PORTUGAL
Sun, Oct 18 - Sun, Oct 25
Icelandair Logo
7:25 pm - 1:15 pm
ORD
-
DUB
11h 50m
1 stop
Icelandair Logo
11:30 am - 6:20 pm
DUB
-
ORD
11h 50m
1 stop
$598Icelandair
Mon, Nov 16 - Thu, Nov 26
Iberia Logo
3:55 pm - 5:15 am
ORD
-
DUB
7h 20mnonstop
Iberia Logo
11:30 am - 2:00 pm
DUB
-
ORD
8h 30mnonstop
$692Iberia
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 $652 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 $652.

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 $766 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 $841.

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.

No, with an average price for the route of $901, prices are generally cheapest when you fly direct.

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 February, when tickets cost $523 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $966 and $832 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 Saturdays 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 5 weeks before departure, which saves you about 36% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low season

January

Cheapest flight

$171
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Chicago O'Hare Airport to Dublin

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 10052 reviews
6.6Food
7.3Comfort
7.7Boarding
8.1Crew
7.1Entertainment
Airline reviews

It was hot and not as comfortable as the flight to Chicago. Must have been a different plane that needs to be worked on or replaced.

8.0 ExcellentArmedrest, Jul 2026
ORD - PAH
Read more United Airlines reviews

It was hot and not as comfortable as the flight to Chicago. Must have been a different plane that needs to be worked on or replaced.

The SFO lounge closes at 12 midnight. My flight took off at 2AM

It was extremely hot in the cabin the entire flight, vent air was worn

Have not had a flight out or returning to Norfolk that has not required maintenance, and a gate delay. Properly staff the crew so maintenance can be performed without last minute emergencies on each flight and there is enough staff to have gates prepared for inbound flights. Staff to ensure the safety and on time service vs. profit.

We were forced to eat vegetarian food because non veg food ran out. The breakfast was mediocre.

My original flight was cancelled and that affected my trip and my plans and I got no compensation and customer service was hard to reach as well

The kid in the middle seat kicked me almost the whole flight, almost kicked my hot tea off my tray. The flight was delayed due to the first plane not being able to be de-iced in July! We had to get a new plane. Now I drive 3 hours back to Edmonton because direct flights from PVR were way to expensive

The flight was delayed by a hour and I wish they had communicated it sooner. No issues on the plane, it did take a while for food to come.

Know that the movies that you are going to be offered are the oldest be rated movies they could possibly get. They may have one or two new movies that they keep advertising but when you’re flying 15 hours, there is nothing to see past the first new movie.

Agents at gate were not immediately available to solve problems and once they did they didn’t fix all the fight connections

I love flying with them, the long-haul was fantastic. The short flight from Dublin --> Switzerland was horrible though. Most narrow seats I ever had, first and only time in my life I couldn't even close the seatbelt in seat 1A which was very embarrassing so I had to sit in the middle, because that seatbeld was 20cm longer. No idea why seat 1A would have a much shorter belt, it's just ridicilous. Also I hate the fixed seats, way too narrow.

Food was mediocre, but as expected in economy class on an airline. Wrap was ice cold , my son’s served by a steward on the next aisle was warm . As expected, but at least heat the food up a bit. No frills, but it’s economy. Excellent free WiFi was a bonus

OK overall. Flight was delayed Crew on flight was good

Late late late. Delayed and arrived an hour late for a 1 hour 45 minute connection. Every time. Poor record for this company. I try to fly any other carrier first.

I flew economy class. Seats were very good and the crew was excellent

Fast and sensible boarding was absolutely amazing. But extortionate wifi and seats that barely moved, making me unable to sleep, didn't do a lot of favors.

I appteciate the very courteous staff. The flight was good. Something that wasn't good was that my bag was only checked as far as Dublin and I had a connecting flight to Vienna. (That was a mistake the ORD desk made.) Fortunately the desk at DUB was able to re-tag without me having to re-check in (which initially it seemed I might have to do.)

It was excellent! The plane left Chicago early. Arrived in Dublin early. The crew was excellent! It was a great experience.

Horrible. Garbage airline. Due to the strike we got a replacement plane/crew. I didn't get my exit row seat I paid for. Food was horrible. Plane was hot and didn't have AC vents.

Are Longus was fine. I booked thru Kayak and was unable to get my business class seat early. Sat next to galley. Crew forgot to wake me for breakfast.

I had my flight of Cedar Rapids. THen Chicago to Boston. Flight out of Cedar rapids was delayed by 12 hrs. Had to drive to Chicago to catch my flight

Long delays to board due to mechanical issues with plane.

Flight was delayed, boarded, sat at the gate for more than 30 minutes, left the gate then waited on the pad for another 30 to 60 minutes then returned to the gate, deboarded and was cancelled... alternative flight was not booked automatically. Waited in line for 30 minutes but fortunately an alternate flight to a different destination was found ... no thanks to the travel agent used by kayak

The flight from Milwaukee to Dallas was great the staff absolutely amazing. After that EVERYTHING WENT DOWN HILL!!! ABSOLUTELY HORRIBLE!!! WILL NOT FLY THIS AIRLINE AGAIN

I was very unhappy with the lack of communication from the cockpit. It took close to a half an hour before we took off after the doors were closed, and we got no announcements as to progress. It would be nice to get some acknowledgement of the situation and updates as to when we are taking off.

The seat was not even cleaned. It has full of cookie crums probably from last flight's passenger. Its basic expectation that, seats are clean.

Very turbulent flight, no drinks, very little service, unorganized boarding, gate changed multiple times

The flight was delayed significantly. Communication during the flight was abrupt and caused some panic as we were navigating turbulence. It was also too loud and every announcement felt startling. The flight attendants did not offer any assurances and I felt unsettled most of the flight. The seats, floor and tray table was very dirty. The seat next to me was broken and the passenger sitting there was very uncomfortable. He had a spring in his back and his seat made terrible squeaking noises through the flight.

Significant delays on my trip to Chicago and my trip back to NY

Delayed by 5 hours and I had to wit in the airport for more than 6+ hours.

I DO NOT recommend Iceland air...missed connecting flight.....paid for isle seat upgrade for health reasons...had to do that over....baggage left in the rain so clothes got soaked other items ruined....called customer * dont care* service

The ticket was reserved in my name but not paid for by underpricer. Alaska airlines was unable to issue my ticket (could not connect the ticket with the PNR) due to an error with underpricer and I spent the better part of 2 hours at the ticket counter trying to rectify.

Damage May baggage and I report the airport agant and they see it

Crew was very friendly. Need lay flat beds! More snacks

Good. Rxception is the Entertainment - movies and TV shows all out of date…

Worst airline I’ve ever flown. Delayed 5.5 hrs, missed connecting flight, and missed an entire day of vacation. Zero customer service

Everything sucked. No food, one small glass of water, a tiny coffee, 5.5 hour delay with no customer service. Would never recommend flying them.

Our three ski bags did not arrive and are still not delivered, one full day later. With one ski bag not traceable at all. I would not fly Iceland Air again.

Great crew, bumpy landings, two-hour wait for baggage with no communication or explanation. Will not fly again!

Decent service - nice seats. Crew were not overly attentive but can’t complain overall for the money

The staff was very nice and helpful. Some of the best crew I have met.

Disaster. Downgraded. Zero apology. No effort or coordination between gate and crew. Awful seat blocked by door emergency slide box. Iberia is a mess. App never works. Avoid this airline.

It was extremely cold in the back of the plane. The seats are uncomfortable and space very small. Crew was excellent as usual.

It was a wonderful experience with great food, great staff, and no difficulties boarding!

I was in business class for the 8 hour flight where: 1. The WiFi did not work 2. The entertainment system did not work 3. We were told there were no hot drinks for the entire flight

Paid for “extra room” selected seat. Wasn’t a benefit. Also was in aisle and was bumped almost every time attendants walked down aisle. Should have saved the assigned seat money and let them select.

Alaska located my mother, aware that she had mobility issues and they seated her closer to the door. She and I were seated together so I felt more secure to be able to assist her. The desk attendant reviewed what steps to take when boarding. Allowed us to board first, we loved that. I was allowed time to help her board slowly, seat her, put all her things in their place before the crowds came through. These small details made me want to travel Alaska more when possible.

I bought the ticket through Iberian, but I was unable to check in using my code. American wouldn’t let me check in and Iberian counter was closed.

The comfort level was low, but the staff was nice

Bad. Requested a diabetic meal. Was served everything i couldnt eat. So i did not estbthe whole flight dinner / breakfast. Sad and uncomfortable.

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

Information on your arrival and departure airports