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

WestJet, TAP AIR PORTUGAL, and Aer Lingus are the most popular carriers operating from Ireland to Chicago

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

The number of flights available between Ireland and Chicago is 11 per day as of November 2025. The most frequent departure time is 10:00, with 68% of daily flights leaving at midday.

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

As of November 2025, there are 83 flights per week flying from Ireland to Chicago. The most common day of the week flights depart is Wed, with 16% of flights taking off on this day.

Which airlines fly to Chicago?

Aer Lingus, United Airlines and British Airways are the top three most popular airlines that fly to Chicago from Ireland according to our data. Aer Lingus is the first choice among our users, with 61% of people opting to fly with this airline when travelling to Chicago. Keep in mind that there are 5 different airlines that fly to Chicago on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Chicago?

If you’re flying from a popular airport in Ireland, such as Dublin or Shannon, and flying into Chicago, then you can expect flight times to average 8h 05m and 12h, respectively.

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

Prices for flights from Ireland to Chicago were last updated today.

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

There are 5 operators available for flights from Ireland to Chicago as of November 2025.

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

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 Ireland to Chicago.

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

The travel and health documents you'll need for your trip to Chicago may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Chicago. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

€251 Cheap Flights from Ireland to Chicago in 2025/26

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Recent return flight deals from Ireland to Chicago

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08:35 - 15:55DUB-ORD

13h 20m1 stop

21:15 - 14:45ORD-DUB

11h 30m1 stop

€399British Airways

Find Deal

Tue, 31 Mar - Tue, 7 Apr

08:35 - 18:15DUB-ORD

15h 40m1 stop

21:15 - 14:45ORD-DUB

11h 30m1 stop

€400British Airways

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Tue, 31 Mar - Tue, 7 Apr

10:10 - 16:55DUB-ORD

12h 45m1 stop

19:20 - 18:20ORD-DUB

17h 00m1 stop

€402Scandinavian Airlines

Find Deal

Sun, 8 Feb - Thu, 12 Feb

11:30 - 16:45DUB-ORD

35h 15m2 stops

19:20 - 18:20ORD-DUB

17h 00m1 stop

€403Scandinavian Airlines

Find Deal

Thu, 4 Dec - Mon, 8 Dec

11:30 - 20:34DUB-ORD

15h 04m1 stop

18:35 - 12:35ORD-DUB

12h 00m1 stop

€406American Airlines

Find Deal

Thu, 4 Dec - Mon, 8 Dec

15:20 - 17:55DUB-ORD

8h 35mdirect

21:00 - 10:20ORD-DUB

7h 20mdirect

€408Aer Lingus

Find Deal

Wed, 17 Dec - Mon, 12 Jan

15:20 - 17:55DUB-ORD

8h 35mdirect

19:40 - 09:00ORD-DUB

7h 20mdirect

€411Aer Lingus

Find Deal

Wed, 10 Dec - Sun, 14 Dec

10:00 - 18:08DUB-MDW

14h 08m1 stop

14:00 - 07:55MDW-DUB

11h 55m1 stop

€423KLM

Find Deal

Tue, 31 Mar - Tue, 7 Apr

09:45 - 18:18DUB-MDW

14h 33m1 stop

13:05 - 07:45MDW-DUB

12h 40m1 stop

€434KLM

Find Deal

Thu, 4 Dec - Mon, 8 Dec

07:50 - 13:50SNN-ORD

12h 00m1 stop

11:40 - 11:30ORD-SNN

18h 50m2 stops

€531American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

British Airways flights from Ireland to Chicago

Our best British Airways deals on Ireland to Chicago flight tickets

British Airways

31 Mar

DUB08:35Dublin

13h 20m

1 stop

ORD15:55Chicago O'Hare Intl

7 Apr

ORD21:15Chicago O'Hare Intl

11h 30m

1 stop

DUB14:45Dublin

€399

Find similar

British Airways

31 Mar

DUB08:35Dublin

15h 40m

1 stop

ORD18:15Chicago O'Hare Intl

7 Apr

ORD21:15Chicago O'Hare Intl

11h 30m

1 stop

DUB14:45Dublin

€400

Find similar

British Airways

27 Feb

DUB07:00Dublin

14h 25m

1 stop

ORD15:25Chicago O'Hare Intl

8 Mar

ORD22:45Chicago O'Hare Intl

10h 35m

1 stop

DUB14:20Dublin

€433

Find similar

Scandinavian Airlines flights from Ireland to Chicago

Our best Scandinavian Airlines deals on Ireland to Chicago flight tickets

Scandinavian Airlines

8 Feb

DUB10:10Dublin

12h 45m

1 stop

ORD16:55Chicago O'Hare Intl

12 Feb

ORD19:20Chicago O'Hare Intl

17h 00m

1 stop

DUB18:20Dublin

€402

Find similar

Scandinavian Airlines

4 Dec

DUB11:30Dublin

35h 15m

2 stops

ORD16:45Chicago O'Hare Intl

8 Dec

ORD19:20Chicago O'Hare Intl

17h 00m

1 stop

DUB18:20Dublin

€403

Find similar

Scandinavian Airlines

1 Mar

DUB19:05Dublin

27h 40m

1 stop

ORD16:45Chicago O'Hare Intl

4 Mar

ORD19:20Chicago O'Hare Intl

17h 00m

1 stop

DUB18:20Dublin

€404

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 31/3

08:35-15:55

1 stop13h 20m

Chicago O'Hare Intl

Tue 7/4

21:15-14:45

1 stop11h 30m

€399

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 31/3

08:35-18:15

1 stop15h 40m

Chicago O'Hare Intl

Tue 7/4

21:15-14:45

1 stop11h 30m

€400

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 8/2

10:10-16:55

1 stop12h 45m

Chicago O'Hare Intl

Thu 12/2

19:20-18:20

1 stop17h 00m

€402

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 4/12

11:30-16:45

2 stops35h 15m

Chicago O'Hare Intl

Mon 8/12

19:20-18:20

1 stop17h 00m

€403

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 4/12

11:30-20:34

1 stop15h 04m

Chicago O'Hare Intl

Mon 8/12

18:35-12:35

1 stop12h 00m

€406

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 17/12

15:20-17:55

Nonstop8h 35m

Chicago O'Hare Intl

Mon 12/1

21:00-10:20

Nonstop7h 20m

€408

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 10/12

15:20-17:55

Nonstop8h 35m

Chicago O'Hare Intl

Sun 14/12

19:40-09:00

Nonstop7h 20m

€411

DublinChicago

DUB - MDW

DUBMDW

Dublin

Tue 31/3

10:00-18:08

1 stop14h 08m

Chicago Midway

Tue 7/4

14:00-07:55

1 stop11h 55m

€423

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 4/12

09:45-18:18

1 stop14h 33m

Chicago Midway

Mon 8/12

13:05-07:45

1 stop12h 40m

€434

ShannonChicago

SNN - ORD

SNNORD

Shannon

Thu 5/3

07:50-13:50

1 stop12h 00m

Chicago O'Hare Intl

Mon 9/3

11:40-11:30

2 stops18h 50m

€531

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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 cheapest month to fly to Chicago from Ireland is in September. Flight prices, which tend to average around €406, are often lower during this time because this is during the off-season. If you don’t want to visit Chicago in September, then you should wait until November to fly from Ireland, when ticket prices are also cheap, with an average price of €411.

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

On average, the least expensive day to fly to Chicago from Ireland is on a Friday. momondo users have found tickets for Friday departures for as low as €631. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Chicago on Tuesday is €728.

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

In the evening is the cheapest time of day to fly from Ireland to Chicago when you can find flight prices for as low as €521. Flying to Chicago in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at midday when prices are €678 on average. Flights to Chicago from Ireland at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 €518 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Ireland for as low as €466 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?

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

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	€394
Fastest flight time	8h 05m
Direct flights	Every day
Airports in Chicago	1 airport

The best one-way flight to Chicago from Ireland in the past 72 hours is €394. The best return flight deal from Ireland to Chicago found on momondo in the last 72 hours is €591.

The fastest flight from Ireland to Chicago takes 8h 05m

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 were last updated today.
How many operators does momondo search for flights from Ireland to Chicago?
There are 5 operators available for flights from Ireland to Chicago as of November 2025.
How old do you have to be to fly from Ireland to Chicago?
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 Ireland to Chicago.
What documentation or ID do you need to fly to Chicago?
The travel and health documents you'll need for your trip to Chicago may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Chicago. It is always advisable to seek advice from your airline or a trusted 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 23.55% of all bookings. The subsequent popular models are Boeing 767-300 at 20.21%, Boeing 787 Dreamliner at 19.16%, and Airbus A330-300 at 17.08%.

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
United Airlines	PriceFrom €357	Free Cancellation	Rating 7.4 9,017 reviews	Search United Airlines flights
Icelandair	PriceFrom €376	Free Cancellation	Rating 7.1 578 reviews	Search Icelandair flights
Aer Lingus	PriceFrom €390	Free Cancellation	Rating 7.2 1,370 reviews	Search Aer Lingus flights
British Airways	PriceFrom €401	Free Cancellation	Rating 6.7 7,522 reviews	Search British Airways flights
American Airlines	PriceFrom €512	Free Cancellation	Rating 7.2 11,050 reviews	Search American Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ireland to Chicago. momondo saves you time and could save you money on your trip.

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 can track prices for Ireland to Chicago flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Chicago trip

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Fly into one of these airports located in Chicago

Chicago Midway Airport

Chicago O'Hare Intl Airport

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Cheap flights from Ireland to Chicago from €251

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 16/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

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Find the cheapest flights from Ireland to Chicago

Recent return flight deals from Ireland to Chicago

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Recent last minute flight deals from Ireland to Chicago

Recent direct flight deals from Ireland to Chicago

British Airways flights from Ireland to Chicago

Our best British Airways deals on Ireland to Chicago flight tickets

Scandinavian Airlines flights from Ireland to Chicago

Our best Scandinavian Airlines deals on Ireland to Chicago flight tickets

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Use the filters below to find and compare flights from Ireland to Chicago that are best for you.

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?

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

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

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?

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?

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

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

WestJet, TAP AIR PORTUGAL, and Aer Lingus are the most popular carriers operating from Ireland to Chicago

Which airlines fly to Chicago?

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

The number of flights available between Ireland and Chicago is 11 per day as of November 2025. The most frequent departure time is 10:00, with 68% of daily flights leaving at midday.

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

As of November 2025, there are 83 flights per week flying from Ireland to Chicago. The most common day of the week flights depart is Wed, with 16% of flights taking off on this day.

How long does it take to fly to Chicago?

If you’re flying from a popular airport in Ireland, such as Dublin or Shannon, and flying into Chicago, then you can expect flight times to average 8h 05m and 12h, respectively.

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

Fastest flight time

Direct flights

Airports in Chicago

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

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?

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

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

Why use momondo?

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

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

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

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

An easier way to manage your Chicago 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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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 25.6 km from Chicago