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

Aer Lingus, American Airlines, and Icelandair are the most popular carriers operating from Ireland to Illinois

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

As of November 2025, there are 26 flights per week flying from Ireland to Illinois. The most common day of the week flights depart is Fri, with 50% of flights taking off on this day.

Which airlines fly to Illinois?

Aer Lingus, United Airlines and British Airways are the top three most popular airlines that fly to Illinois from Ireland according to our data. Aer Lingus is the first choice among our users, with 62% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 5 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

As of November 2025, 3 flights take off from Ireland and land in Illinois each day. The most common flight departure time for this route is 11:00, with 75% of daily flights taking off at midday.

How long is the flight from Ireland to Illinois?

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

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

Prices for flights from Ireland to Illinois are updated daily.

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

As of November 2025, there are 5 operators available to choose from for flights from Ireland to Illinois.

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

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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to Illinois.

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

The travel and health documents required for your trip to Illinois 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 Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

€323 Cheap Flights from Ireland to Illinois in 2025/26

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Find the cheapest flights from Ireland to Illinois

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Recent return flight deals from Ireland to Illinois

Enter your travel dates to find the best prices.

19:05 - 16:45DUB-ORD

27h 40m1 stop

19:20 - 18:20ORD-DUB

17h 00m1 stop

€392Scandinavian Airlines

Find Deal

Fri, 6 Feb - Thu, 12 Feb

11:30 - 17:20DUB-ORD

11h 50m1 stop

18:30 - 10:15ORD-DUB

9h 45m1 stop

€393Icelandair

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Sat, 6 Dec - Mon, 15 Dec

10:30 - 17:00DUB-ORD

12h 30m1 stop

11:48 - 09:50ORD-DUB

16h 02m2 stops

€396American Airlines

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Thu, 13 Nov - Mon, 17 Nov

16:00 - 17:00DUB-ORD

31h 00m1 stop

14:42 - 12:15ORD-DUB

15h 33m2 stops

€397American Airlines

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Mon, 8 Dec - Sun, 14 Dec

10:30 - 18:45DUB-ORD

14h 15m1 stop

16:25 - 12:05ORD-DUB

13h 40m2 stops

€400British Airways

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Thu, 26 Feb - Fri, 6 Mar

13:10 - 13:50DUB-ORD

30h 40m1 stop

18:45 - 17:00ORD-DUB

16h 15m1 stop

€401British Airways

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Thu, 5 Feb - Tue, 17 Feb

15:20 - 17:55DUB-ORD

8h 35mdirect

21:00 - 10:20ORD-DUB

7h 20mdirect

€407Aer Lingus

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Thu, 13 Nov - Mon, 2 Feb

15:20 - 17:55DUB-ORD

8h 35mdirect

15:50 - 05:10ORD-DUB

7h 20mdirect

€414Aer Lingus

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Wed, 10 Dec - Sun, 14 Dec

09:00 - 15:29DUB-STL

12h 29m1 stop

08:25 - 10:20STL-DUB

19h 55m1 stop

€802United Airlines

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Fri, 21 Nov - Sat, 29 Nov

09:00 - 15:29DUB-STL

12h 29m1 stop

11:37 - 09:55STL-DUB

16h 18m1 stop

€805United Airlines

Find Deal

Sat, 15 Nov - Wed, 19 Nov

Scandinavian Airlines flights from Ireland to Illinois

Our best Scandinavian Airlines deals on Ireland to Illinois flight tickets

Scandinavian Airlines

6 Feb

DUB19:05Dublin

27h 40m

1 stop

ORD16:45Chicago O'Hare Intl

12 Feb

ORD19:20Chicago O'Hare Intl

17h 00m

1 stop

DUB18:20Dublin

€392

Find similar

Scandinavian Airlines

25 Feb

DUB11:30Dublin

35h 15m

2 stops

ORD16:45Chicago O'Hare Intl

1 Mar

ORD19:20Chicago O'Hare Intl

18h 15m

2 stops

DUB19:35Dublin

€395

Find similar

Scandinavian Airlines

12 Feb

DUB11:15Dublin

35h 30m

2 stops

ORD16:45Chicago O'Hare Intl

15 Feb

ORD19:10Chicago O'Hare Intl

17h 10m

1 stop

DUB18:20Dublin

€398

Find similar

Icelandair flights from Ireland to Illinois

Our best Icelandair deals on Ireland to Illinois flight tickets

Icelandair

6 Dec

DUB11:30Dublin

11h 50m

1 stop

ORD17:20Chicago O'Hare Intl

15 Dec

ORD18:30Chicago O'Hare Intl

9h 45m

1 stop

DUB10:15Dublin

€393

Find similar

Icelandair

6 Nov

DUB11:30Dublin

11h 50m

1 stop

ORD17:20Chicago O'Hare Intl

24 Nov

ORD18:30Chicago O'Hare Intl

9h 45m

1 stop

DUB10:15Dublin

€429

Find similar

Icelandair

14 Dec

DUB11:30Dublin

11h 50m

1 stop

ORD17:20Chicago O'Hare Intl

24 Apr

ORD19:25Chicago O'Hare Intl

11h 50m

1 stop

DUB13:15Dublin

€447

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 6/2

19:05-16:45

1 stop27h 40m

Chicago O'Hare Intl

Thu 12/2

19:20-18:20

1 stop17h 00m

€392

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 6/12

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Mon 15/12

18:30-10:15

1 stop9h 45m

€393

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 13/11

10:30-17:00

1 stop12h 30m

Chicago O'Hare Intl

Mon 17/11

11:48-09:50

2 stops16h 02m

€396

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 8/12

16:00-17:00

1 stop31h 00m

Chicago O'Hare Intl

Sun 14/12

14:42-12:15

2 stops15h 33m

€397

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 26/2

10:30-18:45

1 stop14h 15m

Chicago O'Hare Intl

Fri 6/3

16:25-12:05

2 stops13h 40m

€400

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 5/2

13:10-13:50

1 stop30h 40m

Chicago O'Hare Intl

Tue 17/2

18:45-17:00

1 stop16h 15m

€401

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 13/11

15:20-17:55

Nonstop8h 35m

Chicago O'Hare Intl

Mon 2/2

21:00-10:20

Nonstop7h 20m

€407

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 10/12

15:20-17:55

Nonstop8h 35m

Chicago O'Hare Intl

Sun 14/12

15:50-05:10

Nonstop7h 20m

€414

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 21/11

09:00-15:29

1 stop12h 29m

Lambert-St Louis

Sat 29/11

08:25-10:20

1 stop19h 55m

€802

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 15/11

09:00-15:29

1 stop12h 29m

Lambert-St Louis

Wed 19/11

11:37-09:55

1 stop16h 18m

€805

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ireland to Illinois

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 Illinois?

The cheapest month to fly to Illinois from Ireland is in September. Flight prices, which tend to average around €421, are often lower during this time because this is during the off-season. If you’re not able to fly to Illinois in September, then January is your next best option. Flight prices from Ireland to Illinois during January average around €442.

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

According to our data, Wednesday is the cheapest day to fly to Illinois from Ireland. The lowest ticket price found for a Wednesday departure recently was €636. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. On the other hand, Tuesday is the most expensive day to depart from Ireland because it is more convenient for both business and leisure travellers. As a result, prices tend to be around €735.

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

According to our data, the cheapest time of day to fly to Illinois is in the evening. momondo users have found flights departing from Ireland to Illinois in the evening for as low as €525. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets at midday because they tend to be around €683. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Ireland to Illinois flight route?

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

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

You are more likely to see cheaper flights to Illinois from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around €522 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Ireland for as low as €463 on momondo.

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

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

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

Cheap Ireland to Illinois flight deals and tips

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

Best price found	€400
Fastest flight time	8h 05m
Direct flights	Every day
Airports in Illinois	1 airport

The best one-way flight to Illinois from Ireland in the past 72 hours is €400. The best return flight deal from Ireland to Illinois found on momondo in the last 72 hours is €589.

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

Direct flights go from Ireland to Illinois every day.

There is 1 airport near Illinois: Chicago O'Hare Intl (ORD)

Search flight deals

When did momondo last update prices for flights from Ireland to Illinois?
Prices for flights from Ireland to Illinois are updated daily.
How many operators does momondo search for flights from Ireland to Illinois?
As of November 2025, there are 5 operators available to choose from for flights from Ireland to Illinois.
How old do you have to be to fly from Ireland to Illinois?
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 stopovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois 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 Illinois. 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 Ireland to Illinois?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ireland to Illinois is Boeing 787-8 Dreamliner (21.63% of total bookings). The next most popular plane models are Boeing 787 Dreamliner (21.33%), Boeing 767-300 (19.24%), and Airbus A330-300 (17.07%).

Best airlines flying from Ireland to Illinois

Compare and see reviews for airlines that fly from Ireland to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom €356	Free Cancellation	Rating 7.1 563 reviews	Search Icelandair flights
United Airlines	PriceFrom €359	Free Cancellation	Rating 7.4 8,995 reviews	Search United Airlines flights
Aer Lingus	PriceFrom €392	Free Cancellation	Rating 7.2 1,365 reviews	Search Aer Lingus flights
British Airways	PriceFrom €404	Free Cancellation	Rating 6.7 7,489 reviews	Search British Airways flights
American Airlines	PriceFrom €516	Free Cancellation	Rating 7.2 11,031 reviews	Search American Airlines flights

Why use momondo?

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

It is quick and easy to find Ireland to Illinois 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 Illinois that suits you.

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

Flights from Ireland to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Ireland.

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

Of course. momondo tracks the price of Ireland to Illinois flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Illinois trip

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Find better results for your trip to Illinois

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Cheap flights from Ireland to Illinois from €323

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 Illinois departing on 11/4. 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

Trusted and free

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Find the cheapest flights from Ireland to Illinois

Recent return flight deals from Ireland to Illinois

Recent one-way flight deals from Ireland to Illinois

Recent last minute flight deals from Ireland to Illinois

Recent direct flight deals from Ireland to Illinois

Scandinavian Airlines flights from Ireland to Illinois

Our best Scandinavian Airlines deals on Ireland to Illinois flight tickets

Icelandair flights from Ireland to Illinois

Our best Icelandair deals on Ireland to Illinois flight tickets

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

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How to get the cheapest flight ticket from Ireland to Illinois

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 Illinois?

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

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

What is the cheapest Ireland to Illinois flight route?

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

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

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

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

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

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

Aer Lingus, American Airlines, and Icelandair are the most popular carriers operating from Ireland to Illinois

Which airlines fly to Illinois?

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

As of November 2025, 3 flights take off from Ireland and land in Illinois each day. The most common flight departure time for this route is 11:00, with 75% of daily flights taking off at midday.

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

As of November 2025, there are 26 flights per week flying from Ireland to Illinois. The most common day of the week flights depart is Fri, with 50% of flights taking off on this day.

How long is the flight from Ireland to Illinois?

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

Cheap Ireland to Illinois flight deals and tips

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

Best price found

Fastest flight time

Direct flights

Airports in Illinois

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

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

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

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

What is the most popular plane model from Ireland to Illinois?

Best airlines flying from Ireland to Illinois

Compare and see reviews for airlines that fly from Ireland to Illinois with momondo

Why use momondo?

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

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

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

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

An easier way to manage your Illinois 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 Illinois

Popular Cities in Illinois

Popular flights according to clicks in the last 7 days on momondo