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Cheap flights from Ireland to Chicago from $437

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to Chicago departing on 4/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ireland to Chicago

Recent round-trip flight deals from Ireland to Chicago

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
12:30 pm - 4:45 pm
DUB
-
ORD
58h 15m2 stops
Scandinavian Airlines Logo
7:10 pm - 6:20 pm
ORD
-
DUB
17h 10m1 stop
$474Scandinavian Airlines
Mon, Jan 12 - Sun, Jan 18
Scandinavian Airlines Logo
12:30 pm - 4:45 pm
DUB
-
ORD
58h 15m2 stops
Scandinavian Airlines Logo
7:10 pm - 6:20 pm
ORD
-
DUB
17h 10m1 stop
$475Scandinavian Airlines
Mon, Jan 12 - Sun, Jan 18
Multiple Airlines Logo
1:25 pm - 2:20 pm
ORK
-
ORD
30h 55m1 stop
Multiple Airlines Logo
1:57 pm - 3:00 pm
ORD
-
ORK
19h 03m2 stops
$530Multiple Airlines
Thu, Feb 5 - Sun, Feb 8
KLM Logo
6:00 am - 2:20 pm
ORK
-
ORD
14h 20m1 stop
KLM Logo
5:20 pm - 2:45 pm
ORD
-
ORK
15h 25m1 stop
$531KLM
Sat, Jan 17 - Thu, Jan 22
Multiple Airlines Logo
6:00 am - 5:48 pm
ORK
-
ORD
17h 48m2 stops
Multiple Airlines Logo
5:35 pm - 2:45 pm
ORD
-
ORK
15h 10m2 stops
$536Multiple Airlines
Sat, Jan 17 - Thu, Jan 22
KLM Logo
1:25 pm - 2:20 pm
ORK
-
ORD
30h 55m1 stop
KLM Logo
2:25 pm - 12:55 pm
ORD
-
ORK
16h 30m2 stops
$542KLM
Tue, Feb 3 - Tue, Feb 10
British Airways Logo
7:50 am - 5:00 pm
SNN
-
ORD
15h 10m1 stop
British Airways Logo
6:25 pm - 11:30 am
ORD
-
SNN
11h 05m1 stop
$595British Airways
Wed, Feb 4 - Wed, Feb 11
British Airways Logo
7:50 am - 3:25 pm
SNN
-
ORD
13h 35m1 stop
British Airways Logo
6:35 pm - 4:45 pm
ORD
-
SNN
16h 10m1 stop
$601British Airways
Thu, Feb 5 - Thu, Feb 12
Delta Logo
6:00 am - 2:20 pm
ORK
-
ORD
14h 20m1 stop
Delta Logo
5:35 pm - 2:45 pm
ORD
-
ORK
15h 10m2 stops
$651Delta
Sat, Jan 17 - Thu, Jan 22
Delta Logo
6:00 am - 2:20 pm
ORK
-
ORD
14h 20m1 stop
Delta Logo
12:15 pm - 11:25 pm
ORD
-
ORK
29h 10m2 stops
$656Delta
Sat, Jan 17 - Thu, Jan 22

Air Canada flights from Ireland to Chicago O'Hare Intl Airport

Our best Air Canada deals on Ireland to Chicago O'Hare Intl Airport flight tickets
Air Canada
Feb 5
SNN7:50 amShannon
18h 20m
2 stops
ORD8:10 pmChicago O'Hare Intl
Feb 12
ORD12:50 pmChicago O'Hare Intl
16h 40m
2 stops
SNN11:30 amShannon
$798
Find similar
Air Canada
Jan 15
SNN7:50 amShannon
20h 15m
3 stops
ORD10:05 pmChicago O'Hare Intl
Jan 19
ORD3:35 pmChicago O'Hare Intl
13h 55m
2 stops
SNN11:30 amShannon
$803
Find similar

British Airways flights from Ireland to Chicago O'Hare Intl Airport

Our best British Airways deals on Ireland to Chicago O'Hare Intl Airport flight tickets
British Airways
Jan 12
DUB1:00 pmDublin
27h 51m
2 stops
ORD10:51 amChicago O'Hare Intl
Jan 18
ORD8:16 amChicago O'Hare Intl
19h 34m
2 stops
DUB9:50 amDublin
$559
Find similar
British Airways
Mar 31
DUB8:20 pmDublin
23h 30m
1 stop
ORD1:50 pmChicago O'Hare Intl
Apr 7
ORD10:35 pmChicago O'Hare Intl
14h 15m
1 stop
DUB6:50 pmDublin
$585
Find similar
British Airways
Feb 4
SNN7:50 amShannon
15h 10m
1 stop
ORD5:00 pmChicago O'Hare Intl
Feb 11
ORD6:25 pmChicago O'Hare Intl
11h 05m
1 stop
SNN11:30 amShannon
$595
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ireland to Chicago O'Hare Intl Airport 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 832,500 searches. Data last updated December 22, 2025.
Use the filters below to find and compare flights from Ireland to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 1/12

12:30 pm-4:45 pm

2 stops58h 15m

Chicago O'Hare Intl

Sun 1/18

7:10 pm-6:20 pm

1 stop17h 10m

$474

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 1/12

12:30 pm-4:45 pm

2 stops58h 15m

Chicago O'Hare Intl

Sun 1/18

7:10 pm-6:20 pm

1 stop17h 10m

$475

CorkChicago

ORK - ORD

ORKORD

Cork

Thu 2/5

1:25 pm-2:20 pm

1 stop30h 55m

Chicago O'Hare Intl

Sun 2/8

1:57 pm-3:00 pm

2 stops19h 03m

$530

CorkChicago

ORK - ORD

ORKORD

Cork

Sat 1/17

6:00 am-2:20 pm

1 stop14h 20m

Chicago O'Hare Intl

Thu 1/22

5:20 pm-2:45 pm

1 stop15h 25m

$531

CorkChicago

ORK - ORD

ORKORD

Cork

Sat 1/17

6:00 am-5:48 pm

2 stops17h 48m

Chicago O'Hare Intl

Thu 1/22

5:35 pm-2:45 pm

2 stops15h 10m

$536

CorkChicago

ORK - ORD

ORKORD

Cork

Tue 2/3

1:25 pm-2:20 pm

1 stop30h 55m

Chicago O'Hare Intl

Tue 2/10

2:25 pm-12:55 pm

2 stops16h 30m

$542

ShannonChicago

SNN - ORD

SNNORD

Shannon

Wed 2/4

7:50 am-5:00 pm

1 stop15h 10m

Chicago O'Hare Intl

Wed 2/11

6:25 pm-11:30 am

1 stop11h 05m

$595

ShannonChicago

SNN - ORD

SNNORD

Shannon

Thu 2/5

7:50 am-3:25 pm

1 stop13h 35m

Chicago O'Hare Intl

Thu 2/12

6:35 pm-4:45 pm

1 stop16h 10m

$601

CorkChicago

ORK - ORD

ORKORD

Cork

Sat 1/17

6:00 am-2:20 pm

1 stop14h 20m

Chicago O'Hare Intl

Thu 1/22

5:35 pm-2:45 pm

2 stops15h 10m

$651

CorkChicago

ORK - ORD

ORKORD

Cork

Sat 1/17

6:00 am-2:20 pm

1 stop14h 20m

Chicago O'Hare Intl

Thu 1/22

12:15 pm-11:25 pm

2 stops29h 10m

$656

Flights are sorted by cheapest round-trip flights first.

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

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

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 Chicago O'Hare Intl Airport?

The month of September is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Ireland averaging around $489.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Sunday when prices can be found for as low as $676. This is often the case because there is less demand to fly during this day of the week. On the other hand, Thursday is the most expensive day to depart from Ireland because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $808.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Flying to Chicago O'Hare Intl Airport from Ireland in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $704 when looking at flights departing in the afternoon. Try not to purchase tickets at noon because they tend to be around $818. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $606 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Ireland for as low as $542 on momondo.

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

There are 3 cabin classes available to choose from on Ireland to Chicago O'Hare Intl 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 Ireland to Chicago O'Hare Intl Airport flights?

You could potentially save up to 6% on your flight if you consider stops on a Ireland to Chicago O'Hare Intl Airport flight.

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

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

Best Price Found

$485

Fastest flight time

8h 00m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Ireland in the past 72 hours is $485. The best round-trip flight deal from Ireland to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $645.
The fastest flight from Ireland to Chicago O'Hare Intl Airport takes 8h 00m
Direct flights go from Ireland to Chicago O'Hare Intl Airport every day.
Search flight deals

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

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

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

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

    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 layovers 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 Ireland to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The required travel and health documents for your Chicago O'Hare Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago O'Hare Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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

Compare and see reviews for airlines that fly from Ireland to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom $388Free CancellationRating
7.0
592 reviews
Search Icelandair flights
LufthansaPriceFrom $411Free CancellationRating
6.8
7,649 reviews
Search Lufthansa flights
Aer LingusPriceFrom $455Free CancellationRating
7.2
1,412 reviews
Search Aer Lingus flights
United AirlinesPriceFrom $479Free CancellationRating
7.4
9,106 reviews
Search United Airlines flights

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lake Geneva
Schaumburg
South Haven
Rockford
Merrillville
Gurnee
Naperville
Rosemont
Kenosha
New Buffalo
Joliet
Oak Brook
Orland Park
Racine
Hammond
Janesville
Tinley Park
Aurora
Elgin
Benton Harbor

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Ireland to Chicago for you.

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

momondo does allow users to show only those flights to Chicago from Ireland which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Ireland and Chicago by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Chicago, momondo offers a useful price alert feature which will track prices for flights to Chicago from Ireland and alert you when they change.

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