What is the cheapest airline that flies from Ireland to Chicago?

TAP AIR PORTUGAL is the most popular carrier operating from Ireland to Chicago

How many flights depart from Ireland to Chicago on average per week?

129 flights are operational weekly from Ireland to Chicago as of August 2025. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

How many flights depart from Ireland to Chicago on average per day?

As of August 2025, there are 18 flights per day flying from Ireland to Chicago. The most common time of day flights depart is 11:00AM, with 51% of flights taking off at noon.

How long does it take to fly to Chicago?

Average flight duration from Ireland to Chicago depends on which airport you fly into and out of. Flying from Dublin to Chicago O'Hare Intl Airport is 8h on average, while flying from Shannon to Chicago O'Hare Intl Airport is 8h 15m on average. Chicago O'Hare Intl Airport is the most popular airport in Chicago.

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?

As of August 2025, there are 2 operators available to choose from 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.

$303 Cheap Flights from Ireland to Chicago in 2025

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Find the cheapest flights from Ireland to Chicago

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Ireland to Chicago

12:15 pm - 9:15 pmDUB-ORD

15h 00m1 stop

7:25 pm - 1:15 pmORD-DUB

11h 50m1 stop

$371Icelandair

Find Deal

Wed, Sep 10 - Wed, Oct 1

12:30 pm - 4:45 pmDUB-ORD

34h 15m1 stop

7:20 pm - 6:20 pmORD-DUB

17h 00m1 stop

$374Scandinavian Airlines

Find Deal

Thu, Jan 15 - Thu, Jan 22

10:00 am - 6:37 pmDUB-MDW

14h 37m1 stop

6:17 pm - 10:00 amMDW-DUB

9h 43m1 stop

$439KLM

Find Deal

Mon, Sep 1 - Sun, Sep 7

3:20 pm - 11:55 amDUB-ORD

26h 35m1 stop

8:40 pm - 7:35 pmORD-DUB

16h 55m1 stop

$444

Find Deal

Mon, Sep 1 - Sun, Sep 7

1:45 pm - 3:45 pmDUB-ORD

8h 00mnonstop

10:35 pm - 7:35 pmORD-DUB

15h 00m1 stop

$448

Find Deal

Fri, Sep 5 - Sun, Sep 14

4:40 pm - 7:00 pmDUB-ORD

8h 20mnonstop

3:45 pm - 5:10 amORD-DUB

7h 25mnonstop

$450Aer Lingus

Find Deal

Tue, Sep 16 - Tue, Sep 23

4:40 pm - 7:00 pmDUB-ORD

8h 20mnonstop

3:45 pm - 5:10 amORD-DUB

7h 25mnonstop

$451Aer Lingus

Find Deal

Thu, Sep 4 - Sun, Sep 7

5:55 am - 6:37 pmDUB-MDW

18h 42m2 stops

6:00 am - 8:45 amMDW-DUB

20h 45m1 stop

$460KLM

Find Deal

Mon, Sep 1 - Sun, Sep 7

9:30 am - 11:45 amSNN-ORD

8h 15mnonstop

6:00 pm - 7:30 amORD-SNN

7h 30mnonstop

$706United Airlines

Find Deal

Mon, Sep 15 - Mon, Sep 22

9:30 am - 11:45 amSNN-ORD

8h 15mnonstop

6:05 pm - 7:30 amORD-SNN

7h 25mnonstop

$708United Airlines

Find Deal

Mon, Aug 25 - Sun, Aug 31

Scandinavian Airlines flights from Ireland to Chicago

Our best Scandinavian Airlines deals on Ireland to Chicago flight tickets

Scandinavian Airlines

Jan 15

DUB12:30 pmDublin

34h 15m

1 stop

ORD4:45 pmChicago O'Hare Intl

Jan 22

ORD7:20 pmChicago O'Hare Intl

17h 00m

1 stop

DUB6:20 pmDublin

$374

Find similar

Scandinavian Airlines

Jan 15

DUB12:30 pmDublin

34h 15m

1 stop

ORD4:45 pmChicago O'Hare Intl

Jan 22

ORD7:20 pmChicago O'Hare Intl

56h 50m

2 stops

DUB10:10 amDublin

$383

Find similar

Scandinavian Airlines

Oct 30

DUB7:05 pmDublin

27h 40m

1 stop

ORD5:45 pmChicago O'Hare Intl

Nov 3

ORD7:20 pmChicago O'Hare Intl

34h 25m

1 stop

DUB11:45 amDublin

$399

Find similar

British Airways flights from Ireland to Chicago

Our best British Airways deals on Ireland to Chicago flight tickets

British Airways

Oct 29

DUB10:20 amDublin

14h 25m

1 stop

ORD7:45 pmChicago O'Hare Intl

Nov 4

ORD5:10 pmChicago O'Hare Intl

10h 25m

1 stop

DUB9:35 amDublin

$445

Find similar

British Airways

Sep 1

DUB3:20 pmDublin

26h 35m

1 stop

ORD11:55 amChicago O'Hare Intl

Sep 9

ORD8:40 pmChicago O'Hare Intl

12h 05m

1 stop

DUB2:45 pmDublin

$447

Find similar

British Airways

Sep 16

SNN7:40 amShannon

15h 20m

1 stop

ORD5:00 pmChicago O'Hare Intl

Sep 23

ORD5:40 pmChicago O'Hare Intl

16h 30m

1 stop

SNN4:10 pmShannon

$590

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 9/10

12:15 pm-9:15 pm

1 stop15h 00m

Chicago O'Hare Intl

Wed 10/1

7:25 pm-1:15 pm

1 stop11h 50m

$371

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 1/15

12:30 pm-4:45 pm

1 stop34h 15m

Chicago O'Hare Intl

Thu 1/22

7:20 pm-6:20 pm

1 stop17h 00m

$374

DublinChicago

DUB - MDW

DUBMDW

Dublin

Mon 9/1

10:00 am-6:37 pm

1 stop14h 37m

Chicago Midway

Sun 9/7

6:17 pm-10:00 am

1 stop9h 43m

$439

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 9/1

3:20 pm-11:55 am

1 stop26h 35m

Chicago O'Hare Intl

Sun 9/7

8:40 pm-7:35 pm

1 stop16h 55m

$444

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 9/5

1:45 pm-3:45 pm

Nonstop8h 00m

Chicago O'Hare Intl

Sun 9/14

10:35 pm-7:35 pm

1 stop15h 00m

$448

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 9/16

4:40 pm-7:00 pm

Nonstop8h 20m

Chicago O'Hare Intl

Tue 9/23

3:45 pm-5:10 am

Nonstop7h 25m

$450

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 9/4

4:40 pm-7:00 pm

Nonstop8h 20m

Chicago O'Hare Intl

Sun 9/7

3:45 pm-5:10 am

Nonstop7h 25m

$451

DublinChicago

DUB - MDW

DUBMDW

Dublin

Mon 9/1

5:55 am-6:37 pm

2 stops18h 42m

Chicago Midway

Sun 9/7

6:00 am-8:45 am

1 stop20h 45m

$460

ShannonChicago

SNN - ORD

SNNORD

Shannon

Mon 9/15

9:30 am-11:45 am

Nonstop8h 15m

Chicago O'Hare Intl

Mon 9/22

6:00 pm-7:30 am

Nonstop7h 30m

$706

ShannonChicago

SNN - ORD

SNNORD

Shannon

Mon 8/25

9:30 am-11:45 am

Nonstop8h 15m

Chicago O'Hare Intl

Sun 8/31

6:05 pm-7:30 am

Nonstop7h 25m

$708

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest month to fly to Chicago?

The month of November is, on average, the cheapest month to fly to Chicago from Ireland, with most prices found around $506. If you’re not able to fly to Chicago in November, then September is your next best option. Flight prices from Ireland to Chicago during September average around $515.

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 $656. This is often the case because there is less demand to fly during this day of the week. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Ireland to Chicago for around $832.

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 morning. Flights from Ireland to Chicago during this time can be as low as $743. In contrast, the most expensive time of day to depart to Chicago is at noon when prices are around $817.

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 $600 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 $516 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.

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	$303
Fastest flight time	8h 00m
Direct flights	Every day
Airports in Chicago	2 airports

The best one-way flight to Chicago from Ireland in the past 72 hours is $303. The best round-trip flight deal from Ireland to Chicago found on momondo in the last 72 hours is $371.

The fastest flight from Ireland to Chicago takes 8h 00m

Direct flights go from Ireland to Chicago every day.

There are 2 airports near Chicago: Chicago O'Hare Intl (ORD), Chicago Midway (MDW)

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?
As of August 2025, there are 2 operators available to choose from 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?
momondo data reveals that the most frequently booked plane model on the route from Ireland to Chicago is Boeing 787-8 Dreamliner, representing 28.15% of all bookings. The subsequent popular models are Boeing 787 Dreamliner at 27.45%, Airbus A330-300 at 20.81%, and Airbus A330 at 8.46%.

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
Aer Lingus	PriceFrom $447	Free Cancellation	Rating 7.1 1,193 reviews		Search Aer Lingus flights
United Airlines	PriceFrom $667	Free Cancellation	Rating 7.4 8,905 reviews		Search United Airlines flights

Merrillville

New Buffalo

Hammond

Benton Harbor

Saint Joseph

Portage

Lansing

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.