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

JetBlue, Aer Lingus, 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 70% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 3 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 8h and 8h 20m, respectively.

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

As of March 2026, 5 flights take off from Ireland and land in Illinois each day. The most common flight departure time for this route is 10:00, with 76% of daily flights taking off at midday.

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

As of March 2026, there are 40 flights per week flying from Ireland to Illinois. The most common day of the week flights depart is Fri, with 33% 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 March 2026, there are 3 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.

€256 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.

12:15 - 18:15

DUB

ORD

12h 00m

1 stop

19:25 - 11:05

ORD

DUB

9h 40m

1 stop

€424Icelandair

Wed, 15 Apr - Sat, 18 Apr

19:05 - 16:10

DUB

ORD

27h 05m

1 stop

19:15 - 18:20

ORD

DUB

17h 05m

1 stop

€436Scandinavian Airlines

Thu, 14 May - Thu, 28 May

12:00 - 17:56

DUB

MDW

11h 56m

1 stop

18:36 - 10:00

MDW

DUB

9h 24m

1 stop

€564Multiple Airlines

Fri, 8 May - Sun, 17 May

06:15 - 14:15

ORK

ORD

14h 00m

1 stop

13:06 - 14:40

ORD

ORK

19h 34m

2 stops

€569Delta

Thu, 9 Apr - Tue, 14 Apr

06:15 - 18:31

ORK

ORD

18h 16m

2 stops

13:06 - 14:40

ORD

ORK

19h 34m

2 stops

€574Delta

Thu, 9 Apr - Tue, 14 Apr

21:15 - 13:50

SNN

ORD

22h 35m

1 stop

17:00 - 20:35

ORD

SNN

21h 35m

1 stop

€620British Airways

Thu, 7 May - Tue, 26 May

07:30 - 18:15

SNN

ORD

16h 45m

1 stop

17:50 - 16:10

ORD

SNN

16h 20m

1 stop

€622British Airways

Tue, 1 Sep - Wed, 30 Sep

12:00 - 19:30

DUB

STL

13h 30m

1 stop

17:32 - 08:15

STL

DUB

32h 43m

2 stops

€793Multiple Airlines

Tue, 25 Aug - Sat, 5 Sep

09:30 - 22:19

DUB

STL

18h 49m

1 stop

17:00 - 11:50

STL

DUB

12h 50m

1 stop

€819Finnair

Sat, 9 May - Sun, 24 May

09:30 - 22:19

DUB

STL

18h 49m

1 stop

17:00 - 11:50

STL

DUB

12h 50m

1 stop

€823Finnair

Sat, 9 May - Sun, 24 May

JetBlue flights from Ireland to Illinois

Our best JetBlue deals on Ireland to Illinois flight tickets

JetBlue

8 May

DUB10:40Dublin

16h 13m

1 stop

ORD20:53Chicago O'Hare Intl

17 May

ORD06:00Chicago O'Hare Intl

20h 20m

1 stop

DUB08:20Dublin

€479

JetBlue

8 May

DUB10:40Dublin

16h 13m

1 stop

ORD20:53Chicago O'Hare Intl

18 May

ORD07:20Chicago O'Hare Intl

19h 00m

1 stop

DUB08:20Dublin

€480

JetBlue

19 May

DUB10:40Dublin

16h 13m

1 stop

ORD20:53Chicago O'Hare Intl

29 May

ORD08:50Chicago O'Hare Intl

17h 30m

1 stop

DUB08:20Dublin

€482

Scandinavian Airlines flights from Ireland to Illinois

Our best Scandinavian Airlines deals on Ireland to Illinois flight tickets

Scandinavian Airlines

14 May

DUB19:05Dublin

27h 05m

1 stop

ORD16:10Chicago O'Hare Intl

28 May

ORD19:15Chicago O'Hare Intl

17h 05m

1 stop

DUB18:20Dublin

€436

Scandinavian Airlines

21 May

DUB19:05Dublin

27h 05m

1 stop

ORD16:10Chicago O'Hare Intl

28 May

ORD19:15Chicago O'Hare Intl

17h 05m

1 stop

DUB18:20Dublin

€446

Scandinavian Airlines

21 May

DUB19:05Dublin

27h 05m

1 stop

ORD16:10Chicago O'Hare Intl

28 May

ORD19:15Chicago O'Hare Intl

17h 05m

1 stop

DUB18:20Dublin

€448

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 15/4

12:15-18:15

1 stop12h 00m

Chicago O'Hare Intl

Sat 18/4

19:25-11:05

1 stop9h 40m

€424

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 14/5

19:05-16:10

1 stop27h 05m

Chicago O'Hare Intl

Thu 28/5

19:15-18:20

1 stop17h 05m

€436

Fastest return journey

DublinChicago

DUB - MDW

DUBMDW

Dublin

Fri 8/5

12:00-17:56

1 stop11h 56m

Chicago Midway

Sun 17/5

18:36-10:00

1 stop9h 24m

€564

CorkChicago

ORK - ORD

ORKORD

Cork

Thu 9/4

06:15-14:15

1 stop14h 00m

Chicago O'Hare Intl

Tue 14/4

13:06-14:40

2 stops19h 34m

€569

CorkChicago

ORK - ORD

ORKORD

Cork

Thu 9/4

06:15-18:31

2 stops18h 16m

Chicago O'Hare Intl

Tue 14/4

13:06-14:40

2 stops19h 34m

€574

ShannonChicago

SNN - ORD

SNNORD

Shannon

Thu 7/5

21:15-13:50

1 stop22h 35m

Chicago O'Hare Intl

Tue 26/5

17:00-20:35

1 stop21h 35m

€620

ShannonChicago

SNN - ORD

SNNORD

Shannon

Tue 1/9

07:30-18:15

1 stop16h 45m

Chicago O'Hare Intl

Wed 30/9

17:50-16:10

1 stop16h 20m

€622

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Tue 25/8

12:00-19:30

1 stop13h 30m

Lambert-St Louis

Sat 5/9

17:32-08:15

2 stops32h 43m

€793

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 9/5

09:30-22:19

1 stop18h 49m

Lambert-St Louis

Sun 24/5

17:00-11:50

1 stop12h 50m

€819

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 9/5

09:30-22:19

1 stop18h 49m

Lambert-St Louis

Sun 24/5

17:00-11:50

1 stop12h 50m

€823

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 €407, 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 November is your next best option. Flight prices from Ireland to Illinois during November average around €410.

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 €614. 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 €753.

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 €604. 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 €719. 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 €554 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 €419 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 22% 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	€548
Fastest flight time	8h 00m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Ireland in the past 72 hours is €548. The best return flight deal from Ireland to Illinois found on momondo in the last 72 hours is €502.

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

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

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 March 2026, there are 3 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 Dreamliner (25.31% of total bookings). The next most popular plane models are Boeing 787-8 Dreamliner (21.48%), Airbus A330-300 (19.87%), and Boeing 767-300 (12.02%).

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 €403	Free Cancellation	Rating 7.2 1,491 reviews	Search Aer Lingus flights
United Airlines	PriceFrom €412	Free Cancellation	Rating 7.4 9,500 reviews	Search United Airlines flights
American Airlines	PriceFrom €423	Free Cancellation	Rating 7.1 11,518 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.