€206 Find Cheap Flights from Chicago O'Hare 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 O'Hare Intl to Ireland departing on 6/2. 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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Flight Deals

Best Ireland Flight Deals from O'Hare Intl

Cheapest return prices found by our users on KAYAK in the last 72 hours
Dublin
Dublin2 stops€357
Cork
Cork1 stop€401
Shannon
Shannon1 stop€400
Knock
Knock2 stops€648
Donegal
Donegal2 stops€800
Milltown (Kerry)
Milltown (Kerry)1 stop€763
Dublin
Dublin2 stops€357
Cork
Cork1 stop€401
Shannon
Shannon1 stop€400
Knock
Knock2 stops€648
Donegal
Donegal2 stops€800
Milltown (Kerry)
Milltown (Kerry)1 stop€763

Cheap Flights from O'Hare Intl to Ireland

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return 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 return flight deals from O'Hare Intl to Ireland

Sat, 17 Jan - Sat, 24 Jan
Scandinavian Airlines Logo
19:20 - 11:45
ORD
-
DUB
34h 25m2 stops
Scandinavian Airlines Logo
10:10 - 16:45
DUB
-
ORD
12h 35m1 stop
€357Scandinavian Airlines
Sun, 8 Mar - Sat, 14 Mar
Scandinavian Airlines Logo
20:20 - 18:20
ORD
-
DUB
17h 00m1 stop
Scandinavian Airlines Logo
10:10 - 17:45
DUB
-
ORD
12h 35m1 stop
€358Scandinavian Airlines
Wed, 21 Jan - Sun, 25 Jan
Scandinavian Airlines Logo
19:20 - 11:45
ORD
-
DUB
34h 25m1 stop
Scandinavian Airlines Logo
10:10 - 16:55
DUB
-
ORD
12h 45m1 stop
€359Scandinavian Airlines
Mon, 26 Jan - Tue, 10 Feb
Scandinavian Airlines Logo
19:20 - 18:20
ORD
-
DUB
17h 00m1 stop
Scandinavian Airlines Logo
11:30 - 16:45
DUB
-
ORD
35h 15m2 stops
€360Scandinavian Airlines
Wed, 21 Jan - Tue, 27 Jan
TAP AIR PORTUGAL Logo
19:10 - 10:20
ORD
-
DUB
33h 10m1 stop
TAP AIR PORTUGAL Logo
16:55 - 15:00
DUB
-
ORD
28h 05m1 stop
€365TAP AIR PORTUGAL
Fri, 23 Jan - Tue, 10 Feb
Icelandair Logo
18:30 - 10:15
ORD
-
DUB
9h 45m1 stop
Icelandair Logo
11:30 - 17:20
DUB
-
ORD
11h 50m1 stop
€366Icelandair
Tue, 21 Apr - Tue, 5 May
American Airlines Logo
22:35 - 16:10
ORD
-
SNN
11h 35m1 stop
American Airlines Logo
07:40 - 17:00
SNN
-
ORD
15h 20m1 stop
€400American Airlines
Mon, 27 Apr - Wed, 6 May
American Airlines Logo
17:40 - 10:45
ORD
-
ORK
11h 05m1 stop
American Airlines Logo
07:20 - 14:40
ORK
-
ORD
13h 20m1 stop
€401American Airlines
Mon, 6 Apr - Tue, 14 Apr
United Airlines Logo
15:35 - 10:15
ORD
-
SNN
12h 40m1 stop
United Airlines Logo
12:30 - 20:17
SNN
-
ORD
13h 47m1 stop
€416United Airlines
Tue, 21 Apr - Tue, 5 May
United Airlines Logo
12:59 - 10:15
ORD
-
SNN
15h 16m2 stops
United Airlines Logo
12:30 - 21:27
SNN
-
ORD
14h 57m2 stops
€420United Airlines
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 72 hours was to Dublin, at €391 return. 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 72 hours was €391.

Can I save money by flying with a stopover from Chicago O'Hare 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.

No, with an average price for the route of €761, 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 January, when tickets cost €447 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is €774 and €677 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.

For Chicago O'Hare Airport to Ireland, Thursday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Ireland back to Chicago O'Hare Airport, the best deals are generally found on Wednesday, with Tuesday being the most expensive.

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 a flight from Chicago O'Hare Intl Airport to Ireland, you should book around 2 weeks before departure, which saves you about 16% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight€206
Best time to beat the crowds (17% less expensive on average)
Most popular time to fly and prices are also 3% lower on average.
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 travellers 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 return 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.

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

    The cheapest time of day to fly to Ireland is generally at night, when retur flights cost €622 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 afternoon, which is peak travel time and where the average cost of a ticket is €775.

Reviews of the top airlines flying 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 9095 reviews
6.6Food
8.1Crew
7.1Entertainment
7.7Boarding
7.3Comfort
Airline reviews

The movies offered were great. Staff were very pleasant and very efficient.

10.0 ExcellentAnonymous, Dec 2025
ORD - HND
Read more United Airlines reviews

The movies offered were great. Staff were very pleasant and very efficient.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very nice flight love the small aircraft. We had a wonderful flight attendant. Nice to see someone that really enjoys her job. Don't have her name but had a southern accent.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

The folks and flights were fantastic. I unfortunately wasn’t able to order a meal that I could eat (I’m gluten free) because I got my ticket through kayak, but they tried their best to find something to help me get through the long flight and I’ll forever remember their kindness.

Flight takeoff was delayed an hour, but arrival time was not updated at the same time as departure time, so those picking me up at the other end were not alerted to the change in my arrival.

Seats are terribly cramped. I’m only 5’2” and my knees were practically in my face. No room to put a normal size bag under the seat and when the person in front of you reclined their seat your tray table was in your lap. This is the airline’s way of cramming more seats into the plane to make more money. I’ll think twice about taking Aer Lingus again since there are a few other options from Boston to the Emerald Isle.

Couldn’t check In online, message was couldn’t check in until Sunday morning though plane left Saturday night. Checked in okay at airport but caused slot if stress.

It all went very well, except for the ramp coordination upon landing in Boston. That, however, was resolved in fairly short order.

NOTE. Aer Lingus does not accept American Express. I was denied boarding because I could not pay the fee for my oversized bag. I did not have another credit or debit card. Moreover, at CDG, I needed to check my bag at one location, go to another location to check my oversized bag and a THIRD location to pay for my oversized bag. Hence, once I was denied boarding, my bags were already en route to the plane. To retrieve them I needed to go to a FOURTH location in another part of the terminal. Last, Aer Lingus will not reimburse me for any portion of my ticket. I lost $1000 bc Aer Lingus doesn’t accept American Express at the CDG counter even though I paid for my ticket through the Kayak link with Amex. Kayak should remedy this situation if they want to continue to partner with Aer Lingus.

The biking process was confusing and I was called for a seat assignment from I number I repeatedly though was spam, but the flight itself was great

It was poor overall. They cancelled our flight and changed it without notifying us. So we incurred extra costs by having to book a hotel for our layover. They say it's Kayak/Underpricer's responsibility to reimburse us. But Kayak/Underpricer have said it's Aer Lingus' responsibility because they are the ones with our 'booking information.' I find this situation confusing and unacceptable.

My experience with Aer Lingus was not too good. First, because of the last minute delayed flight from Amsterdam to Dublin we almost missed our flight from Dublin to Philadelphia. Secondly, the flight from Dublin to Philadelphia had very uncomfortable seats especially it was a very long flight. My buttocks were constantly in pain for sitting on these seats for this long. Lastly, the service in the plane was also slow. I asked for a second cup of water and the hostess told me he'll be right back with that where it took him over an hour to come back with water. It was warm in the plane and I was very thirsty. Overall this airline needs much improvement in their services.

Staff was generally friendly and helpful. Attendants collecting trash were somewhat inattentive though.

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

Information on your arrival and departure airports