€224 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 3/8. 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
Dublin1 stop€422
Cork
Cork2 stops€611
Shannon
Shannondirect€600
Knock
Knock2 stops€805
Milltown (Kerry)
Milltown (Kerry)1 stop€1,146
Donegal
Donegal1 stop€935
Dublin
Dublin1 stop€422
Cork
Cork2 stops€611
Shannon
Shannondirect€600
Knock
Knock2 stops€805
Milltown (Kerry)
Milltown (Kerry)1 stop€1,146
Donegal
Donegal1 stop€935

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

Tue, 1 Sep - Tue, 8 Sep
Aer Lingus Logo
09:50 - 05:10
ORD
-
DUB
13h 20m
1 stop
Aer Lingus Logo
13:20 - 09:00
DUB
-
ORD
25h 40m
1 stop
€422Aer Lingus
Thu, 29 Oct - Mon, 2 Nov
Aer Lingus Logo
11:40 - 05:10
ORD
-
DUB
12h 30m
1 stop
Aer Lingus Logo
13:00 - 19:20
DUB
-
ORD
12h 20m
1 stop
€434Aer Lingus
Sun, 16 Aug - Wed, 26 Aug
United Airlines Logo
18:05 - 07:30
ORD
-
SNN
7h 25mdirect
United Airlines Logo
09:30 - 11:50
SNN
-
ORD
8h 20mdirect
€600United Airlines
Tue, 11 Aug - Wed, 26 Aug
United Airlines Logo
18:05 - 07:30
ORD
-
SNN
7h 25mdirect
United Airlines Logo
09:30 - 11:50
SNN
-
ORD
8h 20mdirect
€601United Airlines
Tue, 3 Nov - Wed, 18 Nov
Delta Logo
07:05 - 10:40
ORD
-
ORK
21h 35m
2 stops
Delta Logo
05:45 - 14:25
ORK
-
ORD
14h 40m
1 stop
€611Delta
Tue, 4 Aug - Thu, 20 Aug
Delta Logo
18:00 - 11:10
ORD
-
SNN
11h 10m
1 stop
Delta Logo
13:05 - 21:52
SNN
-
ORD
14h 47m
1 stop
€613Delta
Sun, 16 Aug - Wed, 26 Aug
Multiple Airlines Logo
10:07 - 11:10
ORD
-
SNN
19h 03m
1 stop
Multiple Airlines Logo
13:05 - 00:02
SNN
-
ORD
16h 57m
2 stops
€617Multiple Airlines
Fri, 6 Nov - Tue, 10 Nov
Multiple Airlines Logo
17:20 - 14:45
ORD
-
ORK
15h 25m
1 stop
Multiple Airlines Logo
11:15 - 14:25
ORK
-
ORD
33h 10m
1 stop
€688Multiple Airlines
Thu, 3 Sep - Mon, 7 Sep
KLM Logo
16:20 - 22:35
ORD
-
ORK
24h 15m
1 stop
KLM Logo
17:10 - 14:15
ORK
-
ORD
27h 05m
1 stop
€692KLM
Mon, 28 Sep - Sat, 24 Oct
KLM Logo
17:10 - 14:40
ORD
-
ORK
15h 30m
1 stop
KLM Logo
06:15 - 14:15
ORK
-
ORD
14h 00m
1 stop
€712KLM
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 Shannon, at €940 return. The most popular route is from Chicago O'Hare Intl Airport (ORD) to Shannon (SNN), and the cheapest round-trip airline ticket found on this route in the last 5 days was €940.

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 in the evening, when retur flights cost €655 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 €715.

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.

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 €844 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 €89 (return) on average. On the other hand, the most expensive months are September and June, when the average cost of return tickets is €2,784 and €2,059 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 Wednesday is the most expensive. Flying from Ireland back to Chicago O'Hare Airport, the best deals are generally found on Friday, with Sunday 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 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 10 weeks before departure.

Find deals

Good to know

Low seasonJanuary
Cheapest flight€224
Best time to beat the crowds (28% less expensive on average)
Most popular time to fly and prices are also 2% 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.

Reviews of the top airline 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.
7.3
Aer LingusOverall score based on 1603 reviews
7.0Entertainment
8.1Crew
7.2Comfort
6.7Food
7.4Boarding
Airline reviews

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.

6.0 GoodScott, Jun 2026
MAN - DUB
Read more Aer Lingus reviews

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.

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

Information on your arrival and departure airports

Chicago O'Hare Airport (ORD)