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

WestJet, Aer Lingus, and Finnair are the most popular carriers operating from Ireland to Illinois

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

As of May 2026, there are 142 flights per week flying from Ireland to Illinois. The most common day of the week flights depart is Fri, with 15% of flights taking off on this day.

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

As of May 2026, 20 flights take off from Ireland and land in Illinois each day. The most common flight departure time for this route is 11:00, with 80% of daily flights taking off at midday.

Which airlines fly to Illinois?

Aer Lingus, United Airlines and Finnair 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 68% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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 7h 59m and 8h 20m, 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 May 2026, there are 4 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.

€367 Cheap Flights from Ireland to Illinois in 2026

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Find the cheapest flights from Ireland to Illinois

Round-trip

One-way

Last minute

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Recent return flight deals from Ireland to Illinois

Enter your travel dates to find the best prices.

06:15 - 14:15

ORK

ORD

14h 00m

1 stop

17:10 - 14:40

ORD

ORK

15h 30m

1 stop

€451Multiple Airlines

Thu, 25 Jun - Mon, 29 Jun

13:05 - 21:48

SNN

ORD

14h 43m

1 stop

18:00 - 11:10

ORD

SNN

11h 10m

1 stop

€466Delta

Fri, 19 Jun - Mon, 29 Jun

13:05 - 21:48

SNN

ORD

14h 43m

1 stop

13:00 - 11:10

ORD

SNN

16h 10m

1 stop

€516Delta

Tue, 23 Jun - Mon, 29 Jun

13:05 - 21:48

SNN

ORD

14h 43m

1 stop

13:00 - 11:10

ORD

SNN

16h 10m

1 stop

€517Delta

Tue, 23 Jun - Mon, 29 Jun

13:05 - 21:48

SNN

ORD

14h 43m

1 stop

13:00 - 11:10

ORD

SNN

16h 10m

1 stop

€517Delta

Thu, 18 Jun - Mon, 22 Jun

08:50 - 18:45

DUB

ORD

15h 55m

1 stop

15:55 - 05:15

ORD

DUB

7h 20mdirect

€537Aer Lingus

Tue, 17 Nov - Fri, 20 Nov

09:30 - 11:29

DUB

ORD

7h 59mdirect

13:32 - 06:30

ORD

DUB

10h 58m

1 stop

€543American Airlines

Thu, 25 Jun - Sun, 5 Jul

11:45 - 19:45

DUB

ORD

14h 00m

1 stop

22:20 - 11:50

ORD

DUB

7h 30mdirect

€545Finnair

Sun, 14 Jun - Sun, 9 Aug

12:30 - 18:57

SNN

ORD

12h 27m

1 stop

18:28 - 10:15

ORD

SNN

9h 47m

1 stop

€629United Airlines

Tue, 6 Oct - Mon, 12 Oct

11:45 - 19:00

DUB

STL

13h 15m

1 stop

11:18 - 06:30

STL

DUB

13h 12m

1 stop

€874American Airlines

Thu, 11 Jun - Mon, 15 Jun

Delta flights from Ireland to Illinois

Our best Delta deals on Ireland to Illinois flight tickets

Delta

19 Jun

SNN13:05Shannon

14h 43m

1 stop

ORD21:48Chicago O'Hare Intl

29 Jun

ORD18:00Chicago O'Hare Intl

11h 10m

1 stop

SNN11:10Shannon

€466

Delta

5 Jun

SNN13:05Shannon

14h 31m

1 stop

ORD21:36Chicago O'Hare Intl

9 Jun

ORD10:05Chicago O'Hare Intl

19h 05m

1 stop

SNN11:10Shannon

€516

Delta

23 Jun

SNN13:05Shannon

14h 43m

1 stop

ORD21:48Chicago O'Hare Intl

29 Jun

ORD13:00Chicago O'Hare Intl

16h 10m

1 stop

SNN11:10Shannon

€517

Finnair flights from Ireland to Illinois

Our best Finnair deals on Ireland to Illinois flight tickets

Finnair

14 Jun

DUB11:45Dublin

14h 00m

1 stop

ORD19:45Chicago O'Hare Intl

9 Aug

ORD22:20Chicago O'Hare Intl

7h 30m

DUB11:50Dublin

€545

Finnair

19 Jun

DUB09:30Dublin

7h 59m

ORD11:29Chicago O'Hare Intl

23 Jun

ORD22:20Chicago O'Hare Intl

7h 30m

DUB11:50Dublin

€546

Finnair

6 Jun

DUB09:30Dublin

7h 59m

ORD11:29Chicago O'Hare Intl

7 Jun

ORD22:20Chicago O'Hare Intl

7h 30m

DUB11:50Dublin

€551

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CorkChicago

ORK - ORD

ORKORD

Cork

Thu 25/6

06:15-14:15

1 stop14h 00m

Chicago O'Hare Intl

Mon 29/6

17:10-14:40

1 stop15h 30m

€451

ShannonChicago

SNN - ORD

SNNORD

Shannon

Fri 19/6

13:05-21:48

1 stop14h 43m

Chicago O'Hare Intl

Mon 29/6

18:00-11:10

1 stop11h 10m

€466

ShannonChicago

SNN - ORD

SNNORD

Shannon

Tue 23/6

13:05-21:48

1 stop14h 43m

Chicago O'Hare Intl

Mon 29/6

13:00-11:10

1 stop16h 10m

€516

ShannonChicago

SNN - ORD

SNNORD

Shannon

Tue 23/6

13:05-21:48

1 stop14h 43m

Chicago O'Hare Intl

Mon 29/6

13:00-11:10

1 stop16h 10m

€517

ShannonChicago

SNN - ORD

SNNORD

Shannon

Thu 18/6

13:05-21:48

1 stop14h 43m

Chicago O'Hare Intl

Mon 22/6

13:00-11:10

1 stop16h 10m

€517

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 17/11

08:50-18:45

1 stop15h 55m

Chicago O'Hare Intl

Fri 20/11

15:55-05:15

Nonstop7h 20m

€537

Fastest return journey

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 25/6

09:30-11:29

Nonstop7h 59m

Chicago O'Hare Intl

Sun 5/7

13:32-06:30

1 stop10h 58m

€543

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 14/6

11:45-19:45

1 stop14h 00m

Chicago O'Hare Intl

Sun 9/8

22:20-11:50

Nonstop7h 30m

€545

ShannonChicago

SNN - ORD

SNNORD

Shannon

Tue 6/10

12:30-18:57

1 stop12h 27m

Chicago O'Hare Intl

Mon 12/10

18:28-10:15

1 stop9h 47m

€629

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 11/6

11:45-19:00

1 stop13h 15m

Lambert-St Louis

Mon 15/6

11:18-06:30

1 stop13h 12m

€874

Flights are sorted by cheapest return flights first.

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 €233, 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 €313.

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

According to our data, Friday is the cheapest day to fly to Illinois from Ireland. The lowest ticket price found for a Friday departure recently was €621. 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, Sunday 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 €783.

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 afternoon. momondo users have found flights departing from Ireland to Illinois in the afternoon for as low as €596. 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 €753. 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 €571 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 €414 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?

You could potentially save up to 5% on your flight if you consider stops on a Ireland to Illinois flight.

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	€701
Fastest flight time	7h 59m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Ireland in the past 72 hours is €701. The best return flight deal from Ireland to Illinois found on momondo in the last 72 hours is €679.

The fastest flight from Ireland to Illinois takes 7h 59m

Direct flights go from Ireland to Illinois every day.

There are 98 airports in Illinois. From Ireland there are direct flights to Chicago O'Hare Intl (ORD).

Search flight deals

Frequently asked questions about flying from Ireland to Illinois

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 May 2026, there are 4 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 (33.30% of total bookings). The next most popular plane models are Airbus A330-300 (24.58%), Boeing 787 Dreamliner (17.00%), and Airbus A330 (7.12%).

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
Aer Lingus	PriceFrom €399	Free Cancellation	Rating 7.3 1,589 reviews	Search Aer Lingus flights
Finnair	PriceFrom €403	Free Cancellation	Rating 7.7 1,401 reviews	Search Finnair flights
United Airlines	PriceFrom €406	Free Cancellation	Rating 7.4 9,766 reviews	Search United Airlines flights
American Airlines	PriceFrom €419	Free Cancellation	Rating 7.1 11,639 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.

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Popular Cities in Illinois

Flights to New Yorkfrom €316

Flights to Los Angelesfrom €495

Flights to Orlandofrom €462

Flights to Miamifrom €492

Flights to Chicagofrom €411

Flights to Bostonfrom €416

Flights to San Franciscofrom €475

Flights to Washington, D.C.from €449

Flights to Las Vegasfrom €479

Flights to Anchoragefrom €889

Flights to Denverfrom €461

Flights to Houstonfrom €540

Cheap flights from Ireland to Illinois from €367

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 23/8. 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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Recent return flight deals from Ireland to Illinois

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Delta flights from Ireland to Illinois

Our best Delta deals on Ireland to Illinois flight tickets

Finnair flights from Ireland to Illinois

Our best Finnair 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.

See travel insights to Illinois from

How to get the cheapest flight ticket from Ireland to Illinois

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?

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

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

Can stopping save me money on Ireland to Illinois flights?

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

Which airlines fly to Illinois?

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

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

How long is the flight from 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

Fastest flight time

Direct flights

Airports in Illinois

Frequently asked questions about flying 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?

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

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