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Cheap flights from Chicago O'Hare Intl Airport to Ireland from €173

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Ireland departing on 7/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Chicago O'Hare Intl Airport to Ireland

Cheap return flights

KLM Logo
17:20 - 15:00ORD-ORK
15h 40m1 stop
KLM Logo
17:15 - 14:20ORK-ORD
27h 05m1 stop
€408KLM
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Sun, 16 Nov - Tue, 2 Dec
KLM Logo
17:20 - 15:00ORD-ORK
15h 40m1 stop
KLM Logo
13:25 - 14:20ORK-ORD
30h 55m1 stop
€410KLM
Find Deal
Sun, 11 Jan - Tue, 20 Jan
Delta Logo
17:20 - 15:00ORD-ORK
15h 40m1 stop
Delta Logo
17:15 - 14:20ORK-ORD
27h 05m1 stop
€410Delta
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Sun, 16 Nov - Tue, 2 Dec
Delta Logo
17:20 - 15:00ORD-ORK
15h 40m1 stop
Delta Logo
17:15 - 16:18ORK-ORD
29h 03m2 stops
€413Delta
Find Deal
Sun, 16 Nov - Tue, 2 Dec
American Airlines Logo
17:40 - 15:25ORD-ORK
15h 45m2 stops
American Airlines Logo
11:55 - 18:45ORK-ORD
12h 50m1 stop
€417American Airlines
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Wed, 5 Nov - Wed, 12 Nov
American Airlines Logo
16:33 - 15:25ORD-ORK
16h 52m2 stops
American Airlines Logo
07:40 - 19:20ORK-ORD
17h 40m2 stops
€422American Airlines
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Sun, 11 Jan - Tue, 20 Jan
United Airlines Logo
06:00 - 10:20ORD-DUB
23h 20m1 stop
United Airlines Logo
09:00 - 09:13DUB-ORD
30h 13m1 stop
€430United Airlines
Find Deal
Mon, 27 Oct - Sun, 9 Nov
United Airlines Logo
18:05 - 07:10ORD-DUB
31h 05m2 stops
United Airlines Logo
09:00 - 14:25DUB-ORD
35h 25m2 stops
€431United Airlines
Find Deal
Mon, 3 Nov - Sun, 16 Nov
Aer Lingus Logo
19:40 - 09:00ORD-DUB
7h 20mdirect
Aer Lingus Logo
11:30 - 14:00DUB-ORD
8h 30mdirect
€432Aer Lingus
Find Deal
Fri, 7 Nov - Fri, 14 Nov
Aer Lingus Logo
19:40 - 09:00ORD-DUB
7h 20mdirect
Aer Lingus Logo
11:30 - 14:00DUB-ORD
8h 30mdirect
€435Aer Lingus
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Sun, 16 Nov - Sat, 22 Nov

Aer Lingus flights from Chicago O'Hare Intl Airport to Ireland

Our best Aer Lingus deals on Chicago O'Hare Intl Airport to Ireland flight tickets
Aer Lingus
7 Nov
ORD19:40Chicago O'Hare Intl
7h 20m
DUB09:00Dublin
14 Nov
DUB15:20Dublin
8h 35m
ORD17:55Chicago O'Hare Intl
€432
Find similar
Aer Lingus
16 Nov
ORD19:40Chicago O'Hare Intl
7h 20m
DUB09:00Dublin
22 Nov
DUB11:30Dublin
8h 30m
ORD14:00Chicago O'Hare Intl
€435
Find similar
Aer Lingus
23 Nov
ORD19:40Chicago O'Hare Intl
7h 20m
DUB09:00Dublin
2 Dec
DUB15:20Dublin
8h 35m
ORD17:55Chicago O'Hare Intl
€447
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Lufthansa flights from Chicago O'Hare Intl Airport to Ireland

Our best Lufthansa deals on Chicago O'Hare Intl Airport to Ireland flight tickets
Lufthansa
25 Nov
ORD21:50Chicago O'Hare Intl
13h 20m
1 stop
DUB17:10Dublin
2 Dec
DUB17:55Dublin
25h 15m
2 stops
ORD13:10Chicago O'Hare Intl
€443
Find similar
Lufthansa
22 Oct
ORD15:35Chicago O'Hare Intl
12h 20m
1 stop
DUB09:55Dublin
10 Nov
DUB17:20Dublin
30h 59m
2 stops
ORD18:19Chicago O'Hare Intl
€448
Find similar
Lufthansa
7 Oct
ORD22:30Chicago O'Hare Intl
11h 55m
1 stop
ORK16:25Cork
19 Oct
ORK17:10Cork
25h 20m
2 stops
ORD12:30Chicago O'Hare Intl
€684
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momondo Fare Finder

 
Customise your flight search to find flights from Chicago O'Hare Intl Airport to Ireland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 13,528 searches. Data last updated 23 September 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoCork

ORD - ORK

ORDORK

Chicago O'Hare Intl

Sun 16/11

17:20-15:00

1 stop15h 40m

Cork

Tue 2/12

17:15-14:20

1 stop27h 05m

€408

ChicagoCork

ORD - ORK

ORDORK

Chicago O'Hare Intl

Sun 11/1

17:20-15:00

1 stop15h 40m

Cork

Tue 20/1

13:25-14:20

1 stop30h 55m

€410

ChicagoCork

ORD - ORK

ORDORK

Chicago O'Hare Intl

Sun 16/11

17:20-15:00

1 stop15h 40m

Cork

Tue 2/12

17:15-14:20

1 stop27h 05m

€410

ChicagoCork

ORD - ORK

ORDORK

Chicago O'Hare Intl

Sun 16/11

17:20-15:00

1 stop15h 40m

Cork

Tue 2/12

17:15-16:18

2 stops29h 03m

€413

ChicagoCork

ORD - ORK

ORDORK

Chicago O'Hare Intl

Wed 5/11

17:40-15:25

2 stops15h 45m

Cork

Wed 12/11

11:55-18:45

1 stop12h 50m

€417

ChicagoCork

ORD - ORK

ORDORK

Chicago O'Hare Intl

Sun 11/1

16:33-15:25

2 stops16h 52m

Cork

Tue 20/1

07:40-19:20

2 stops17h 40m

€422

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 27/10

06:00-10:20

1 stop23h 20m

Dublin

Sun 9/11

09:00-09:13

1 stop30h 13m

€430

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 3/11

18:05-07:10

2 stops31h 05m

Dublin

Sun 16/11

09:00-14:25

2 stops35h 25m

€431

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Fri 7/11

19:40-09:00

Nonstop7h 20m

Dublin

Fri 14/11

11:30-14:00

Nonstop8h 30m

€432

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 16/11

19:40-09:00

Nonstop7h 20m

Dublin

Sat 22/11

11:30-14:00

Nonstop8h 30m

€435

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ireland from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Ireland

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Ireland?

The month of February is another great option to travel to Ireland, with average flight prices from Chicago O'Hare Intl Airport averaging around €472.

What is the cheapest day to depart on your flight to Ireland?

The cheapest day to depart on your flight to Ireland is on a Thursday when prices can be found for as low as €551. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around €886. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ireland.

What is the cheapest time of day to depart on your flight to Ireland?

In the evening is the cheapest time of day to fly from Chicago O'Hare Intl Airport to Ireland when you can find flight prices for as low as €621. Flying to Ireland in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Ireland is at midday when prices are around €773.

What is the cheapest Chicago O'Hare Intl to Ireland flight route?

Fly from Chicago O'Hare Intl to Shannon for the best Chicago O'Hare Intl - Ireland flight prices

How far in advance should I book a flight to Ireland?

You are more likely to see cheaper flights to Ireland from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €597 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Chicago O'Hare Intl Airport for as low as €555 on momondo.

What cabin class options are available on Chicago O'Hare Intl to Ireland flights?

There is only 1 cabin class available to choose from on Chicago O'Hare Intl to Ireland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Chicago O'Hare Intl Airport to Ireland flights?

No. A direct flight is the cheapest option for a flight between Chicago O'Hare Intl Airport to Ireland.

Cheap Chicago O'Hare Intl Airport to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to Ireland

Best price found

€634

Fastest flight time

7h 20m

Direct flights

Every day

Airports in Ireland

1 airport
The best flight deal from Chicago O'Hare Intl Airport to Ireland found on momondo in the last 72 hours is €634
The fastest flight from Chicago O'Hare Intl Airport to Ireland takes 7h 20m
Direct flights go from Chicago O'Hare Intl Airport to Ireland every day.
There is 1 airport near Ireland: Dublin (DUB)
Search flight deals

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to Ireland?

    Prices for flights from Chicago O'Hare Intl Airport to Ireland refresh daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to Ireland?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to Ireland?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Chicago O'Hare Intl Airport to Ireland.

  • What documentation or ID do you need to fly to Ireland?

    The necessary travel and health documents for your Ireland trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Chicago O'Hare Intl Airport to Ireland?

Best airlines flying from Chicago O'Hare Intl Airport to Ireland

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Ireland with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom €451Free CancellationRating
7.2
1,296 reviews
Search Aer Lingus flights
United AirlinesPriceFrom €551Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to Ireland?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ireland from Chicago.

Can I find flights from Chicago to Ireland with flexible booking policies on momondo?

Yes. All flights to Ireland from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Chicago to Ireland?

Once all potential Chicago to Ireland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Chicago to Ireland right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Chicago to Ireland now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Ireland and let you know when they change.

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Find better results for your trip to Ireland

Popular Cities in Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom €40
Flights to Corkfrom €99
Flights to Shannon, Clarefrom €105
Flights to Donegalfrom €60
Flights to Milltown (Kerry)from €40