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Cheap flights from Chicago to Ireland from €203

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 to Ireland departing on 2/2. 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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Cheap return flights

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KLM Logo
16:25 - 16:20ORD-DUB
17h 55m1 stop
KLM Logo
09:45 - 21:36DUB-ORD
17h 51m1 stop
€399KLM
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Wed, 19 Nov - Tue, 25 Nov
Delta Logo
10:36 - 08:00ORD-DUB
15h 24m2 stops
Delta Logo
08:45 - 15:10DUB-ORD
12h 25m1 stop
€400Delta
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Mon, 8 Dec - Wed, 17 Dec
Multiple Airlines Logo
18:35 - 08:10ORD-DUB
7h 35mdirect
Multiple Airlines Logo
05:00 - 13:10DUB-ORD
14h 10m1 stop
€401Multiple Airlines
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Tue, 2 Dec - Tue, 9 Dec
British Airways Logo
22:45 - 17:00ORD-DUB
13h 15m1 stop
British Airways Logo
10:40 - 18:15DUB-ORD
13h 35m1 stop
€402British Airways
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Wed, 25 Mar - Thu, 9 Apr
United Airlines Logo
18:35 - 08:10ORD-DUB
7h 35mdirect
United Airlines Logo
09:00 - 18:52DUB-ORD
15h 52m1 stop
€403United Airlines
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Sun, 23 Nov - Fri, 5 Dec
Multiple Airlines Logo
20:15 - 09:45ORD-DUB
7h 30mdirect
Multiple Airlines Logo
06:05 - 12:55DUB-ORD
12h 50m1 stop
€405Multiple Airlines
Find Deal
Tue, 21 Apr - Tue, 28 Apr
United Airlines Logo
20:15 - 09:45ORD-DUB
7h 30mdirect
United Airlines Logo
09:50 - 15:10DUB-ORD
11h 20m1 stop
€406United Airlines
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Wed, 15 Apr - Wed, 29 Apr
British Airways Logo
18:10 - 14:20ORD-DUB
15h 10m1 stop
British Airways Logo
08:35 - 15:55DUB-ORD
13h 20m1 stop
€410British Airways
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Tue, 24 Mar - Fri, 10 Apr
Aer Lingus Logo
15:50 - 15:45ORD-SNN
17h 55m2 stops
Aer Lingus Logo
07:50 - 17:55SNN-ORD
16h 05m2 stops
€598Aer Lingus
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Fri, 5 Dec - Fri, 12 Dec
Aer Lingus Logo
15:50 - 15:45ORD-SNN
17h 55m2 stops
Aer Lingus Logo
07:50 - 18:55SNN-ORD
16h 05m2 stops
€640Aer Lingus
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Fri, 6 Mar - Sun, 15 Mar

KLM flights from Chicago to Ireland

Our best KLM deals on Chicago to Ireland flight tickets
KLM
19 Nov
ORD16:25Chicago O'Hare Intl
17h 55m
1 stop
DUB16:20Dublin
25 Nov
DUB09:45Dublin
17h 51m
1 stop
ORD21:36Chicago O'Hare Intl
€399
Find similar
KLM
18 Nov
ORD07:00Chicago O'Hare Intl
19h 45m
1 stop
DUB08:45Dublin
23 Nov
DUB09:45Dublin
15h 07m
1 stop
ORD18:52Chicago O'Hare Intl
€410
Find similar
KLM
6 Dec
ORD10:36Chicago O'Hare Intl
16h 09m
1 stop
DUB08:45Dublin
16 Dec
DUB09:45Dublin
17h 55m
1 stop
ORD21:40Chicago O'Hare Intl
€419
Find similar

Delta flights from Chicago to Ireland

Our best Delta deals on Chicago to Ireland flight tickets
Delta
8 Dec
ORD10:36Chicago O'Hare Intl
15h 24m
2 stops
DUB08:00Dublin
17 Dec
DUB08:45Dublin
12h 25m
1 stop
ORD15:10Chicago O'Hare Intl
€400
Find similar
Delta
19 Nov
ORD06:45Chicago O'Hare Intl
19h 20m
2 stops
DUB08:05Dublin
26 Nov
DUB11:30Dublin
16h 23m
1 stop
ORD21:53Chicago O'Hare Intl
€403
Find similar
Delta
10 Dec
MDW13:14Chicago Midway
17h 26m
2 stops
DUB12:40Dublin
16 Dec
DUB10:45Dublin
19h 02m
2 stops
MDW23:47Chicago Midway
€407
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momondo Fare Finder

 
Customise your flight search to find flights from Chicago 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 7 November 2025.
Use the filters below to find and compare flights from Chicago to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 19/11

16:25-16:20

1 stop17h 55m

Dublin

Tue 25/11

09:45-21:36

1 stop17h 51m

€399

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Mon 8/12

10:36-08:00

2 stops15h 24m

Dublin

Wed 17/12

08:45-15:10

1 stop12h 25m

€400

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 2/12

18:35-08:10

Nonstop7h 35m

Dublin

Tue 9/12

05:00-13:10

1 stop14h 10m

€401

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 25/3

22:45-17:00

1 stop13h 15m

Dublin

Thu 9/4

10:40-18:15

1 stop13h 35m

€402

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Sun 23/11

18:35-08:10

Nonstop7h 35m

Dublin

Fri 5/12

09:00-18:52

1 stop15h 52m

€403

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 21/4

20:15-09:45

Nonstop7h 30m

Dublin

Tue 28/4

06:05-12:55

1 stop12h 50m

€405

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Wed 15/4

20:15-09:45

Nonstop7h 30m

Dublin

Wed 29/4

09:50-15:10

1 stop11h 20m

€406

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Tue 24/3

18:10-14:20

1 stop15h 10m

Dublin

Fri 10/4

08:35-15:55

1 stop13h 20m

€410

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Fri 5/12

15:50-15:45

2 stops17h 55m

Shannon

Fri 12/12

07:50-17:55

2 stops16h 05m

€598

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Fri 6/3

15:50-15:45

2 stops17h 55m

Shannon

Sun 15/3

07:50-18:55

2 stops16h 05m

€640

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 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 January is another great option to travel to Ireland, with average flight prices from Chicago averaging around €488.

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 €554. 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 €752. 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 to Ireland when you can find flight prices for as low as €634. 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 €790.

What is the cheapest Chicago to Ireland flight route?

Fly from Chicago O'Hare Intl to Dublin for the best Chicago - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €610 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 for as low as €556 on momondo.

What cabin class options are available on Chicago to Ireland flights?

There is only 1 cabin class available to choose from on Chicago 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 to Ireland flights?

No. A direct flight is the cheapest option for a flight between Chicago to Ireland.

Cheap Chicago to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to Ireland

Best price found

€497

Fastest flight time

7h 20m

Direct flights

Every day

Airports in Ireland

1 airport
The best flight deal from Chicago to Ireland found on momondo in the last 72 hours is €497
The fastest flight from Chicago to Ireland takes 7h 20m
Direct flights go from Chicago 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 to Ireland?

    Prices for flights from Chicago to Ireland are refreshed on a daily basis.

  • How many operators does momondo search for flights from Chicago to Ireland?

  • How old do you have to be to fly from Chicago to Ireland?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago to Ireland.

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

    The travel and health documents required for your trip to Ireland can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Chicago to Ireland?

Best airlines flying from Chicago to Ireland

Compare and see reviews for airlines that fly from Chicago to Ireland with momondo
Airline
Rating
Free Cancellation
Price
Aer LingusPriceFrom €311Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights
United AirlinesPriceFrom €497Free CancellationRating
7.4
9,007 reviews
Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Chicago to Ireland flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ireland that suits you.

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

Yes. momondo allows you to filter the results for Chicago to Ireland flights to just show those with flexible booking policies.

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

Once you have performed a search for Chicago to Ireland flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Ireland from Chicago are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Ireland trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
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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
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