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

GOL, JetBlue, and WestJet are the most popular carriers operating from Ireland to Illinois

Which airlines fly to Illinois?

Aer Lingus, United Airlines and American Airlines 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 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 April 2026, 12 flights take off from Ireland and land in Illinois each day. The most common flight departure time for this route is 11:00, with 70% 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 7h 59m and 8h 20m, respectively.

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

As of April 2026, there are 86 flights per week flying from Ireland to Illinois. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.

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 April 2026, 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.

€228 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

Direct

Recent return flight deals from Ireland to Illinois

Enter your travel dates to find the best prices.

09:30 - 11:30

DUB

ORD

8h 00mdirect

22:25 - 11:50

ORD

DUB

7h 25mdirect

€513Finnair

Fri, 8 May - Thu, 14 May

09:30 - 11:30

DUB

ORD

8h 00mdirect

22:25 - 11:50

ORD

DUB

7h 25mdirect

€514Finnair

Fri, 8 May - Thu, 14 May

14:15 - 21:25

DUB

ORD

13h 10m

1 stop

19:25 - 11:05

ORD

DUB

9h 40m

1 stop

€518Icelandair

Tue, 8 Sep - Tue, 22 Sep

14:15 - 21:25

DUB

ORD

13h 10m

1 stop

19:25 - 11:05

ORD

DUB

9h 40m

1 stop

€520Icelandair

Tue, 8 Sep - Tue, 22 Sep

14:15 - 18:15

DUB

ORD

10h 00m

1 stop

18:30 - 10:15

ORD

DUB

9h 45m

1 stop

€522Icelandair

Tue, 22 Sep - Sun, 8 Nov

12:15 - 21:25

DUB

ORD

15h 10m

1 stop

19:25 - 13:15

ORD

DUB

11h 50m

1 stop

€524Icelandair

Wed, 7 Oct - Wed, 14 Oct

12:30 - 20:38

SNN

ORD

14h 08m

1 stop

18:05 - 07:30

ORD

SNN

7h 25mdirect

€626United Airlines

Fri, 15 May - Sun, 31 May

11:10 - 19:30

DUB

STL

14h 20m

1 stop

21:35 - 14:50

STL

DUB

11h 15m

1 stop

€810Aer Lingus

Tue, 22 Sep - Tue, 6 Oct

08:40 - 19:30

DUB

STL

16h 50m

1 stop

16:32 - 18:20

STL

DUB

19h 48m

2 stops

€824Aer Lingus

Tue, 22 Sep - Tue, 6 Oct

12:40 - 11:27

DUB

STL

28h 47m

1 stop

19:20 - 09:45

STL

DUB

32h 25m

1 stop

€876American Airlines

Sat, 9 May - Sun, 24 May

American Airlines flights from Ireland to Illinois

Our best American Airlines deals on Ireland to Illinois flight tickets

American Airlines

8 May

DUB09:30Dublin

8h 00m

ORD11:30Chicago O'Hare Intl

14 May

ORD16:17Chicago O'Hare Intl

11h 18m

1 stop

DUB09:35Dublin

€559

American Airlines

8 May

DUB09:30Dublin

8h 00m

ORD11:30Chicago O'Hare Intl

14 May

ORD22:25Chicago O'Hare Intl

7h 25m

DUB11:50Dublin

€560

American Airlines

15 May

DUB09:30Dublin

8h 00m

ORD11:30Chicago O'Hare Intl

25 May

ORD16:45Chicago O'Hare Intl

10h 50m

1 stop

DUB09:35Dublin

€562

KLM flights from Ireland to Illinois

Our best KLM deals on Ireland to Illinois flight tickets

KLM

15 May

DUB08:55Dublin

11h 20m

1 stop

ORD14:15Chicago O'Hare Intl

28 May

ORD14:00Chicago O'Hare Intl

13h 15m

1 stop

DUB09:15Dublin

€560

KLM

7 May

ORK10:50Cork

33h 25m

1 stop

ORD14:15Chicago O'Hare Intl

12 May

ORD16:20Chicago O'Hare Intl

12h 00m

1 stop

ORK10:20Cork

€565

KLM

7 May

ORK17:10Cork

27h 05m

1 stop

ORD14:15Chicago O'Hare Intl

12 May

ORD16:20Chicago O'Hare Intl

12h 00m

1 stop

ORK10:20Cork

€566

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

Fastest return journey

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 8/5

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Thu 14/5

22:25-11:50

Nonstop7h 25m

€513

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 8/5

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Thu 14/5

22:25-11:50

Nonstop7h 25m

€514

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 8/9

14:15-21:25

1 stop13h 10m

Chicago O'Hare Intl

Tue 22/9

19:25-11:05

1 stop9h 40m

€518

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 8/9

14:15-21:25

1 stop13h 10m

Chicago O'Hare Intl

Tue 22/9

19:25-11:05

1 stop9h 40m

€520

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 22/9

14:15-18:15

1 stop10h 00m

Chicago O'Hare Intl

Sun 8/11

18:30-10:15

1 stop9h 45m

€522

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 7/10

12:15-21:25

1 stop15h 10m

Chicago O'Hare Intl

Wed 14/10

19:25-13:15

1 stop11h 50m

€524

ShannonChicago

SNN - ORD

SNNORD

Shannon

Fri 15/5

12:30-20:38

1 stop14h 08m

Chicago O'Hare Intl

Sun 31/5

18:05-07:30

Nonstop7h 25m

€626

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Tue 22/9

11:10-19:30

1 stop14h 20m

Lambert-St Louis

Tue 6/10

21:35-14:50

1 stop11h 15m

€810

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Tue 22/9

08:40-19:30

1 stop16h 50m

Lambert-St Louis

Tue 6/10

16:32-18:20

2 stops19h 48m

€824

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 9/5

12:40-11:27

1 stop28h 47m

Lambert-St Louis

Sun 24/5

19:20-09:45

1 stop32h 25m

€876

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 €232, 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 €312.

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

According to our data, Thursday is the cheapest day to fly to Illinois from Ireland. The lowest ticket price found for a Thursday departure recently was €606. 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 €759.

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 €594. 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 €716. 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 €558 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 €413 on momondo.

Can stopping save me money on Ireland to Illinois flights?

You could potentially save up to 8% 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	€557
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 €557. The best return flight deal from Ireland to Illinois found on momondo in the last 72 hours is €535.

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).

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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 April 2026, 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 Airbus A330-300 (26.25% of total bookings). The next most popular plane models are Boeing 787-8 Dreamliner (24.84%), Boeing 787 Dreamliner (22.15%), and Airbus A330 (7.55%).

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
Finnair	PriceFrom €375	Free Cancellation	Rating 7.6 1,392 reviews	Search Finnair flights
Icelandair	PriceFrom €378	Free Cancellation	Rating 7.0 646 reviews	Search Icelandair flights
Aer Lingus	PriceFrom €397	Free Cancellation	Rating 7.3 1,536 reviews	Search Aer Lingus flights
United Airlines	PriceFrom €404	Free Cancellation	Rating 7.4 9,680 reviews	Search United Airlines flights
American Airlines	PriceFrom €417	Free Cancellation	Rating 7.1 11,679 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.