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Cheap flights from Ireland to Illinois from €317

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 9/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Ireland to Illinois

Recent return flight deals from Ireland to Illinois

Enter your travel dates to find the best prices.
Multiple Airlines Logo
07:50 - 13:50
SNN
-
ORD
12h 00m
1 stop
Multiple Airlines Logo
21:50 - 11:30
ORD
-
SNN
31h 40m
1 stop
€475Multiple Airlines
Fri, 18 Dec - Sun, 3 Jan
Scandinavian Airlines Logo
19:05 - 16:10
DUB
-
ORD
27h 05m
1 stop
Scandinavian Airlines Logo
19:15 - 18:20
ORD
-
DUB
17h 05m
1 stop
€529Scandinavian Airlines
Wed, 2 Sep - Wed, 9 Sep
Delta Logo
05:55 - 14:15
DUB
-
ORD
14h 20m
1 stop
Delta Logo
11:30 - 08:15
ORD
-
DUB
14h 45m
2 stops
€531Delta
Thu, 17 Sep - Sat, 26 Sep
Delta Logo
05:55 - 14:30
DUB
-
ORD
14h 35m
1 stop
Delta Logo
13:29 - 10:25
ORD
-
DUB
14h 56m
2 stops
€534Delta
Wed, 23 Sep - Fri, 2 Oct
Finnair Logo
09:30 - 11:30
DUB
-
ORD
8h 00mdirect
Finnair Logo
22:20 - 11:50
ORD
-
DUB
7h 30mdirect
€536Finnair
Wed, 26 Aug - Sun, 30 Aug
Finnair Logo
09:40 - 17:50
DUB
-
ORD
14h 10m
1 stop
Finnair Logo
22:20 - 11:50
ORD
-
DUB
7h 30mdirect
€538Finnair
Thu, 27 Aug - Sat, 5 Sep
KLM Logo
10:00 - 16:39
DUB
-
MDW
12h 39m
1 stop
KLM Logo
12:28 - 07:55
MDW
-
DUB
13h 27m
1 stop
€541KLM
Thu, 8 Oct - Tue, 13 Oct
United Airlines Logo
09:30 - 11:50
SNN
-
ORD
8h 20mdirect
United Airlines Logo
15:55 - 10:15
ORD
-
SNN
12h 20m
1 stop
€550United Airlines
Thu, 27 Aug - Sat, 5 Sep
United Airlines Logo
09:30 - 11:50
SNN
-
ORD
8h 20mdirect
United Airlines Logo
18:05 - 07:30
ORD
-
SNN
7h 25mdirect
€551United Airlines
Thu, 27 Aug - Sat, 5 Sep
KLM Logo
06:15 - 16:39
ORK
-
MDW
16h 24m
2 stops
KLM Logo
13:28 - 10:20
MDW
-
ORK
14h 52m
2 stops
€3,338KLM
Wed, 7 Oct - Sun, 11 Oct

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Finnair flights from Ireland to Illinois

Our best Finnair deals on Ireland to Illinois flight tickets
Finnair
26 Aug
DUB09:30Dublin
8h 00m
ORD11:30Chicago O'Hare Intl
30 Aug
ORD22:20Chicago O'Hare Intl
7h 30m
DUB11:50Dublin
€536
Finnair
27 Aug
DUB09:40Dublin
14h 10m
1 stop
ORD17:50Chicago O'Hare Intl
5 Sept
ORD22:20Chicago O'Hare Intl
7h 30m
DUB11:50Dublin
€538
Finnair
2 Sept
DUB09:30Dublin
8h 00m
ORD11:30Chicago O'Hare Intl
9 Sept
ORD12:09Chicago O'Hare Intl
15h 36m
1 stop
DUB09:45Dublin
€547

JetBlue flights from Ireland to Illinois

Our best JetBlue deals on Ireland to Illinois flight tickets
JetBlue
24 Jul
DUB11:30Dublin
27h 21m
1 stop
ORD08:51Chicago O'Hare Intl
28 Jul
ORD06:00Chicago O'Hare Intl
21h 00m
1 stop
DUB09:00Dublin
€538
JetBlue
22 Jul
DUB10:40Dublin
14h 35m
1 stop
ORD19:15Chicago O'Hare Intl
5 Aug
ORD20:25Chicago O'Hare Intl
29h 55m
1 stop
DUB08:20Dublin
€540
JetBlue
30 Jul
DUB11:30Dublin
16h 28m
1 stop
ORD21:58Chicago O'Hare Intl
6 Aug
ORD11:01Chicago O'Hare Intl
15h 19m
1 stop
DUB08:20Dublin
€542

momondo Fare Finder

 
Customise your flight search to find flights from Ireland to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 13,528 searches. Data last updated 10 July 2026.
Use the filters below to find and compare flights from Ireland to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

ShannonChicago

SNN - ORD

SNNORD

Shannon

Fri 18/12

07:50-13:50

1 stop12h 00m

Chicago O'Hare Intl

Sun 3/1

21:50-11:30

1 stop31h 40m

€475

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 2/9

19:05-16:10

1 stop27h 05m

Chicago O'Hare Intl

Wed 9/9

19:15-18:20

1 stop17h 05m

€529

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 17/9

05:55-14:15

1 stop14h 20m

Chicago O'Hare Intl

Sat 26/9

11:30-08:15

2 stops14h 45m

€531

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 23/9

05:55-14:30

1 stop14h 35m

Chicago O'Hare Intl

Fri 2/10

13:29-10:25

2 stops14h 56m

€534
Fastest return journey

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 26/8

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Sun 30/8

22:20-11:50

Nonstop7h 30m

€536

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 27/8

09:40-17:50

1 stop14h 10m

Chicago O'Hare Intl

Sat 5/9

22:20-11:50

Nonstop7h 30m

€538

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 8/10

10:00-16:39

1 stop12h 39m

Chicago Midway

Tue 13/10

12:28-07:55

1 stop13h 27m

€541

ShannonChicago

SNN - ORD

SNNORD

Shannon

Thu 27/8

09:30-11:50

Nonstop8h 20m

Chicago O'Hare Intl

Sat 5/9

15:55-10:15

1 stop12h 20m

€550

ShannonChicago

SNN - ORD

SNNORD

Shannon

Thu 27/8

09:30-11:50

Nonstop8h 20m

Chicago O'Hare Intl

Sat 5/9

18:05-07:30

Nonstop7h 25m

€551

CorkChicago

ORK - MDW

ORKMDW

Cork

Wed 7/10

06:15-16:39

2 stops16h 24m

Chicago Midway

Sun 11/10

13:28-10:20

2 stops14h 52m

€3,338

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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See travel insights to Illinois from

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?

The cheapest month to fly to Illinois from Ireland is in September. Flight prices, which tend to average around €238, 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 €319.

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 €645. 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 €794.

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 €616. 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 €805. 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 €592 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 €502 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 25% 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

€769

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 €769. The best return flight deal from Ireland to Illinois found on momondo in the last 72 hours is €661.
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

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?

  • 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?

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 LingusPriceFrom €407Free CancellationRating
7.3
1,655 reviews
Search Aer Lingus flights
FinnairPriceFrom €411Free CancellationRating
7.6
1,418 reviews
Search Finnair flights
United AirlinesPriceFrom €414Free CancellationRating
7.4
9,977 reviews
Search United Airlines flights
American AirlinesPriceFrom €427Free CancellationRating
7.1
11,807 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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