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Cheap flights from Ireland to Illinois from €289

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 27/6. 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
06:15 - 14:15
ORK
-
ORD
14h 00m
1 stop
Multiple Airlines Logo
17:10 - 14:40
ORD
-
ORK
15h 30m
1 stop
€504Multiple Airlines
Thu, 25 Jun - Mon, 29 Jun
Multiple Airlines Logo
06:15 - 16:26
ORK
-
ORD
16h 11m
2 stops
Multiple Airlines Logo
17:22 - 14:40
ORD
-
ORK
15h 18m
2 stops
€508Multiple Airlines
Thu, 25 Jun - Mon, 29 Jun
Air France Logo
13:05 - 21:48
SNN
-
ORD
14h 43m
1 stop
Air France Logo
13:00 - 11:10
ORD
-
SNN
16h 10m
1 stop
€520Air France
Thu, 18 Jun - Mon, 22 Jun
Delta Logo
13:05 - 21:48
SNN
-
ORD
14h 43m
1 stop
Delta Logo
18:00 - 11:10
ORD
-
SNN
11h 10m
1 stop
€521Delta
Tue, 23 Jun - Mon, 29 Jun
Multiple Airlines Logo
09:30 - 11:29
DUB
-
ORD
7h 59mdirect
Multiple Airlines Logo
13:38 - 06:30
ORD
-
DUB
10h 52m
1 stop
€540Multiple Airlines
Thu, 18 Jun - Fri, 26 Jun
Finnair Logo
09:40 - 17:50
DUB
-
ORD
14h 10m
1 stop
Finnair Logo
12:09 - 09:45
ORD
-
DUB
15h 36m
1 stop
€546Finnair
Wed, 23 Sep - Fri, 2 Oct
Delta Logo
05:55 - 18:31
DUB
-
MDW
18h 36m
2 stops
Delta Logo
17:50 - 15:25
MDW
-
DUB
15h 35m
2 stops
€595Delta
Thu, 25 Jun - Sat, 4 Jul
Finnair Logo
09:30 - 00:16
DUB
-
STL
20h 46m
1 stop
Finnair Logo
17:58 - 11:50
STL
-
DUB
11h 52m
1 stop
€912Finnair
Sun, 19 Jul - Sun, 26 Jul
American Airlines Logo
13:45 - 23:34
DUB
-
STL
15h 49m
1 stop
American Airlines Logo
15:25 - 09:35
STL
-
DUB
12h 10m
1 stop
€965American Airlines
Sat, 15 Aug - Fri, 4 Sep
Air France Logo
13:05 - 16:16
SNN
-
MDW
33h 11m
2 stops
Air France Logo
13:26 - 11:10
MDW
-
SNN
15h 44m
2 stops
€1,005Air France
Tue, 23 Jun - Mon, 29 Jun

Scandinavian Airlines flights from Ireland to Illinois

Our best Scandinavian Airlines deals on Ireland to Illinois flight tickets
Scandinavian Airlines
14 Oct
DUB11:00Dublin
35h 10m
2 stops
ORD16:10Chicago O'Hare Intl
18 Oct
ORD19:15Chicago O'Hare Intl
32h 55m
2 stops
DUB10:10Dublin
€542
Scandinavian Airlines
25 Aug
DUB19:05Dublin
27h 05m
1 stop
ORD16:10Chicago O'Hare Intl
2 Sept
ORD19:15Chicago O'Hare Intl
17h 05m
1 stop
DUB18:20Dublin
€556
Scandinavian Airlines
26 Aug
DUB19:05Dublin
27h 05m
1 stop
ORD16:10Chicago O'Hare Intl
2 Sept
ORD19:15Chicago O'Hare Intl
17h 05m
1 stop
DUB18:20Dublin
€561

United Airlines flights from Ireland to Illinois

Our best United Airlines deals on Ireland to Illinois flight tickets
United Airlines
13 Jun
SNN09:30Shannon
8h 20m
ORD11:50Chicago O'Hare Intl
23 Jun
ORD18:28Chicago O'Hare Intl
9h 47m
1 stop
SNN10:15Shannon
€748
United Airlines
20 Jul
SNN09:30Shannon
8h 20m
ORD11:50Chicago O'Hare Intl
27 Jul
ORD06:30Chicago O'Hare Intl
21h 45m
2 stops
SNN10:15Shannon
€750
United Airlines
18 Jul
SNN09:30Shannon
8h 20m
ORD11:50Chicago O'Hare Intl
25 Jul
ORD07:35Chicago O'Hare Intl
20h 40m
2 stops
SNN10:15Shannon
€752

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 6 June 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

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

€504

CorkChicago

ORK - ORD

ORKORD

Cork

Thu 25/6

06:15-16:26

2 stops16h 11m

Chicago O'Hare Intl

Mon 29/6

17:22-14:40

2 stops15h 18m

€508

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

€520

ShannonChicago

SNN - ORD

SNNORD

Shannon

Tue 23/6

13:05-21:48

1 stop14h 43m

Chicago O'Hare Intl

Mon 29/6

18:00-11:10

1 stop11h 10m

€521
Fastest return journey

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 18/6

09:30-11:29

Nonstop7h 59m

Chicago O'Hare Intl

Fri 26/6

13:38-06:30

1 stop10h 52m

€540

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 23/9

09:40-17:50

1 stop14h 10m

Chicago O'Hare Intl

Fri 2/10

12:09-09:45

1 stop15h 36m

€546

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 25/6

05:55-18:31

2 stops18h 36m

Chicago Midway

Sat 4/7

17:50-15:25

2 stops15h 35m

€595

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sun 19/7

09:30-00:16

1 stop20h 46m

Lambert-St Louis

Sun 26/7

17:58-11:50

1 stop11h 52m

€912

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Sat 15/8

13:45-23:34

1 stop15h 49m

Lambert-St Louis

Fri 4/9

15:25-09:35

1 stop12h 10m

€965

ShannonChicago

SNN - MDW

SNNMDW

Shannon

Tue 23/6

13:05-16:16

2 stops33h 11m

Chicago Midway

Mon 29/6

13:26-11:10

2 stops15h 44m

€1,005

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 €235, 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 €315.

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 €627. 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 €599. 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 €763. 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 €574 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 €417 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

€705

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 €705. The best return flight deal from Ireland to Illinois found on momondo in the last 72 hours is €685.
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?

  • 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 €401Free CancellationRating
7.3
1,598 reviews
Search Aer Lingus flights
FinnairPriceFrom €405Free CancellationRating
7.7
1,402 reviews
Search Finnair flights
United AirlinesPriceFrom €408Free CancellationRating
7.4
9,778 reviews
Search United Airlines flights
American AirlinesPriceFrom €421Free CancellationRating
7.1
11,651 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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