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Cheap flights from Ireland to Chicago from $398

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 10/7. 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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Find the cheapest flights from Ireland to Chicago

Recent round-trip flight deals from Ireland to Chicago

British Airways Logo
4:00 pm - 3:25 pmDUB-ORD
29h 25m1 stop
British Airways Logo
8:40 pm - 2:20 pmORD-DUB
11h 40m1 stop
$442British Airways
Find Deal
lun., nov. 3 - dom., nov. 9
Multiple Airlines Logo
11:45 am - 8:05 pmDUB-ORD
14h 20m1 stop
Multiple Airlines Logo
6:35 pm - 8:10 amORD-DUB
7h 35mnonstop
$443Multiple Airlines
Find Deal
mié., nov. 5 - mar., nov. 11
British Airways Logo
8:45 am - 2:40 pmDUB-ORD
11h 55m1 stop
British Airways Logo
5:40 pm - 11:55 amORD-DUB
12h 15m1 stop
$445British Airways
Find Deal
lun., oct. 13 - mar., oct. 21
Scandinavian Airlines Logo
11:30 am - 6:45 pmDUB-ORD
36h 15m2 stops
Scandinavian Airlines Logo
7:20 pm - 7:35 pmORD-DUB
18h 15m2 stops
$447Scandinavian Airlines
Find Deal
mié., oct. 29 - dom., nov. 2
Lufthansa Logo
5:55 am - 12:55 pmDUB-ORD
13h 00m1 stop
Lufthansa Logo
9:50 pm - 5:10 pmORD-DUB
13h 20m1 stop
$448Lufthansa
Find Deal
jue., oct. 23 - lun., nov. 3
Aer Lingus Logo
11:30 am - 2:00 pmDUB-ORD
8h 30mnonstop
Aer Lingus Logo
10:45 pm - 3:40 pmORD-DUB
11h 55m1 stop
$449Aer Lingus
Find Deal
dom., mar. 1 - mié., mar. 11
Lufthansa Logo
11:45 am - 9:05 pmDUB-ORD
14h 20m1 stop
Lufthansa Logo
9:50 pm - 5:10 pmORD-DUB
13h 20m1 stop
$451Lufthansa
Find Deal
mié., oct. 29 - dom., nov. 2
Scandinavian Airlines Logo
6:55 pm - 5:45 pmDUB-ORD
27h 50m2 stops
Scandinavian Airlines Logo
7:20 pm - 11:20 amORD-DUB
34h 00m2 stops
$456Scandinavian Airlines
Find Deal
vie., oct. 31 - vie., nov. 7
United Airlines Logo
9:20 am - 8:04 pmDUB-ORD
16h 44m1 stop
United Airlines Logo
12:45 pm - 7:30 amORD-DUB
12h 45m2 stops
$466United Airlines
Find Deal
vie., oct. 24 - lun., nov. 3
United Airlines Logo
9:00 am - 3:10 pmDUB-ORD
12h 10m1 stop
United Airlines Logo
6:20 pm - 10:20 amORD-DUB
10h 00m1 stop
$468United Airlines
Find Deal
sáb., nov. 8 - sáb., nov. 22

British Airways flights from Ireland to Chicago

Our best British Airways deals on Ireland to Chicago flight tickets
British Airways
Nov 3
DUB4:00 pmDublin
29h 25m
1 stop
ORD3:25 pmChicago O'Hare Intl
Nov 9
ORD8:40 pmChicago O'Hare Intl
11h 40m
1 stop
DUB2:20 pmDublin
$442
Find similar
British Airways
Oct 13
DUB8:45 amDublin
11h 55m
1 stop
ORD2:40 pmChicago O'Hare Intl
Oct 21
ORD5:40 pmChicago O'Hare Intl
12h 15m
1 stop
DUB11:55 amDublin
$445
Find similar
British Airways
Nov 11
DUB8:50 amDublin
18h 00m
2 stops
ORD8:50 pmChicago O'Hare Intl
Nov 16
ORD6:30 pmChicago O'Hare Intl
16h 20m
1 stop
DUB4:50 pmDublin
$461
Find similar

American Airlines flights from Ireland to Chicago

Our best American Airlines deals on Ireland to Chicago flight tickets
American Airlines
Nov 7
DUB1:40 pmDublin
31h 45m
1 stop
ORD3:25 pmChicago O'Hare Intl
Nov 13
ORD6:30 pmChicago O'Hare Intl
11h 55m
1 stop
DUB12:25 pmDublin
$453
Find similar
American Airlines
Sep 23
DUB8:35 amDublin
12h 15m
1 stop
ORD2:50 pmChicago O'Hare Intl
Oct 7
ORD10:35 pmChicago O'Hare Intl
12h 30m
1 stop
DUB5:05 pmDublin
$457
Find similar
American Airlines
Sep 23
DUB1:45 pmDublin
8h 00m
ORD3:45 pmChicago O'Hare Intl
Oct 7
ORD10:35 pmChicago O'Hare Intl
12h 30m
1 stop
DUB5:05 pmDublin
$458
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ireland to Chicago 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 septiembre 16, 2025.
Use the filters below to find and compare flights from Ireland to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

lun. 11/3

4:00 pm-3:25 pm

1 stop29h 25m

Chicago O'Hare Intl

dom. 11/9

8:40 pm-2:20 pm

1 stop11h 40m

$442

DublinChicago

DUB - ORD

DUBORD

Dublin

mié. 11/5

11:45 am-8:05 pm

1 stop14h 20m

Chicago O'Hare Intl

mar. 11/11

6:35 pm-8:10 am

Nonstop7h 35m

$443

DublinChicago

DUB - ORD

DUBORD

Dublin

lun. 10/13

8:45 am-2:40 pm

1 stop11h 55m

Chicago O'Hare Intl

mar. 10/21

5:40 pm-11:55 am

1 stop12h 15m

$445

DublinChicago

DUB - ORD

DUBORD

Dublin

mié. 10/29

11:30 am-6:45 pm

2 stops36h 15m

Chicago O'Hare Intl

dom. 11/2

7:20 pm-7:35 pm

2 stops18h 15m

$447

DublinChicago

DUB - ORD

DUBORD

Dublin

jue. 10/23

5:55 am-12:55 pm

1 stop13h 00m

Chicago O'Hare Intl

lun. 11/3

9:50 pm-5:10 pm

1 stop13h 20m

$448

DublinChicago

DUB - ORD

DUBORD

Dublin

dom. 3/1

11:30 am-2:00 pm

Nonstop8h 30m

Chicago O'Hare Intl

mié. 3/11

10:45 pm-3:40 pm

1 stop11h 55m

$449

DublinChicago

DUB - ORD

DUBORD

Dublin

mié. 10/29

11:45 am-9:05 pm

1 stop14h 20m

Chicago O'Hare Intl

dom. 11/2

9:50 pm-5:10 pm

1 stop13h 20m

$451

DublinChicago

DUB - ORD

DUBORD

Dublin

vie. 10/31

6:55 pm-5:45 pm

2 stops27h 50m

Chicago O'Hare Intl

vie. 11/7

7:20 pm-11:20 am

2 stops34h 00m

$456

DublinChicago

DUB - ORD

DUBORD

Dublin

vie. 10/24

9:20 am-8:04 pm

1 stop16h 44m

Chicago O'Hare Intl

lun. 11/3

12:45 pm-7:30 am

2 stops12h 45m

$466

DublinChicago

DUB - ORD

DUBORD

Dublin

sáb. 11/8

9:00 am-3:10 pm

1 stop12h 10m

Chicago O'Hare Intl

sáb. 11/22

6:20 pm-10:20 am

1 stop10h 00m

$468

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

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?

The month of January is, on average, the cheapest month to fly to Chicago from Ireland, with most prices found around $497. If you’re not able to fly to Chicago in January, then September is your next best option. Flight prices from Ireland to Chicago during September average around $509.

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

The cheapest day to depart on your flight to Chicago is on a Wednesday when prices can be found for as low as $655. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Ireland to Chicago for around $818.

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

Our most recent data shows that the best time of day to fly to Chicago is in the afternoon. Flights from Ireland to Chicago during this time can be as low as $722. In contrast, the most expensive time of day to depart to Chicago is at noon when prices are around $818.

What is the cheapest Ireland to Chicago flight route?

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

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

You are more likely to see cheaper flights to Chicago from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago 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 from Ireland for as low as $535 on momondo.

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

There are 3 cabin classes available to choose from on Ireland to Chicago 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 flights?

You could potentially save up to 10% on your flight if you consider stops on a Ireland to Chicago flight.

Cheap Ireland to Chicago flight deals and tips

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

Best Price Found

$574

Fastest flight time

8h 00m

Direct flights

Every day

Airports in Chicago

1 airport
The best one-way flight to Chicago from Ireland in the past 72 hours is $574. The best round-trip flight deal from Ireland to Chicago found on momondo in the last 72 hours is $553.
The fastest flight from Ireland to Chicago takes 8h 00m
Direct flights go from Ireland to Chicago every day.
There is 1 airport near Chicago: Chicago O'Hare Intl (ORD)
Search flight deals

  • When did momondo last update prices for flights from Ireland to Chicago?

    Prices for flights from Ireland to Chicago are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to Chicago.

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

    The required travel and health documents for your Chicago 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. 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?

Best airlines flying from Ireland to Chicago

Compare and see reviews for airlines that fly from Ireland to Chicago with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom $393Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
Aer LingusPriceFrom $463Free CancellationRating
7.2
1,274 reviews
Search Aer Lingus flights
United AirlinesPriceFrom $473Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Merrillville
New Buffalo
Hammond
Benton Harbor
Saint Joseph
Lansing
Portage
Schererville
Valparaiso
Crown Point
Munster
Chesterton
Monticello
Porter
Griffith
Saint John

Why use momondo?

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

Finding the right flight to Chicago from Ireland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Chicago quick and easy, saving you time and money.

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?

Once all potential Ireland to Chicago 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 Ireland to Chicago right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Chicago from Ireland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 78.5 mi from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport
Chicago Greater Rockford Airport