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Cheap flights from Ireland to Illinois from €281

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 9/2. 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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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.
Scandinavian Airlines Logo
12:30 - 16:45
DUB
-
ORD
58h 15m2 stops
Scandinavian Airlines Logo
19:20 - 11:45
ORD
-
DUB
34h 25m1 stop
€403Scandinavian Airlines
Mon, 12 Jan - Mon, 19 Jan
Multiple Airlines Logo
19:05 - 22:42
DUB
-
ORD
33h 37m2 stops
Multiple Airlines Logo
05:15 - 10:30
ORD
-
DUB
23h 15m3 stops
€407Multiple Airlines
Wed, 28 Jan - Wed, 4 Feb
Icelandair Logo
11:30 - 17:20
DUB
-
ORD
11h 50m1 stop
Icelandair Logo
18:30 - 10:15
ORD
-
DUB
9h 45m1 stop
€422Icelandair
Tue, 27 Jan - Tue, 3 Feb
Icelandair Logo
11:30 - 17:20
DUB
-
ORD
11h 50m1 stop
Icelandair Logo
18:30 - 10:15
ORD
-
DUB
9h 45m1 stop
€428Icelandair
Tue, 13 Jan - Tue, 20 Jan
British Airways Logo
20:05 - 15:25
SNN
-
ORD
25h 20m1 stop
British Airways Logo
18:25 - 11:30
ORD
-
SNN
11h 05m1 stop
€491British Airways
Tue, 27 Jan - Tue, 3 Feb
British Airways Logo
07:40 - 15:25
ORK
-
ORD
13h 45m1 stop
British Airways Logo
18:25 - 15:25
ORD
-
ORK
15h 00m1 stop
€491British Airways
Tue, 27 Jan - Tue, 3 Feb
American Airlines Logo
07:40 - 15:25
ORK
-
ORD
13h 45m1 stop
American Airlines Logo
18:35 - 11:10
ORD
-
ORK
10h 35m1 stop
€646American Airlines
Wed, 11 Feb - Sun, 15 Feb
United Airlines Logo
09:30 - 19:13
DUB
-
STL
15h 43m2 stops
United Airlines Logo
15:23 - 09:55
STL
-
DUB
13h 32m2 stops
€828United Airlines
Thu, 5 Mar - Mon, 9 Mar
United Airlines Logo
10:40 - 16:04
DUB
-
STL
11h 24m1 stop
United Airlines Logo
17:41 - 09:55
STL
-
DUB
11h 14m1 stop
€829United Airlines
Thu, 5 Mar - Mon, 9 Mar
American Airlines Logo
12:45 - 19:30
DUB
-
STL
12h 45m1 stop
American Airlines Logo
07:20 - 09:45
STL
-
DUB
20h 25m1 stop
€875American Airlines
Wed, 6 May - Wed, 20 May

American Airlines flights from Ireland to Illinois

Our best American Airlines deals on Ireland to Illinois flight tickets
American Airlines
12 Jan
DUB16:00Dublin
29h 25m
1 stop
ORD15:25Chicago O'Hare Intl
18 Jan
ORD18:25Chicago O'Hare Intl
11h 50m
1 stop
DUB12:15Dublin
€507
Find similar
American Airlines
26 Dec
DUB13:40Dublin
31h 45m
1 stop
ORD15:25Chicago O'Hare Intl
1 Jan
ORD13:15Chicago O'Hare Intl
11h 55m
1 stop
DUB07:10Dublin
€531
Find similar
American Airlines
15 Jan
SNN07:50Shannon
15h 10m
1 stop
ORD17:00Chicago O'Hare Intl
19 Jan
ORD11:52Chicago O'Hare Intl
17h 38m
2 stops
SNN11:30Shannon
€645
Find similar

Icelandair flights from Ireland to Illinois

Our best Icelandair deals on Ireland to Illinois flight tickets
Icelandair
27 Jan
DUB11:30Dublin
11h 50m
1 stop
ORD17:20Chicago O'Hare Intl
3 Feb
ORD18:30Chicago O'Hare Intl
9h 45m
1 stop
DUB10:15Dublin
€422
Find similar
Icelandair
13 Jan
DUB11:30Dublin
11h 50m
1 stop
ORD17:20Chicago O'Hare Intl
20 Jan
ORD18:30Chicago O'Hare Intl
9h 45m
1 stop
DUB10:15Dublin
€428
Find similar
Icelandair
2 Mar
DUB11:30Dublin
11h 50m
1 stop
ORD17:20Chicago O'Hare Intl
9 Mar
ORD19:30Chicago O'Hare Intl
9h 45m
1 stop
DUB10:15Dublin
€436
Find similar

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 15 December 2025.
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

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 12/1

12:30-16:45

2 stops58h 15m

Chicago O'Hare Intl

Mon 19/1

19:20-11:45

1 stop34h 25m

€403

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 28/1

19:05-22:42

2 stops33h 37m

Chicago O'Hare Intl

Wed 4/2

05:15-10:30

3 stops23h 15m

€407

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 27/1

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Tue 3/2

18:30-10:15

1 stop9h 45m

€422

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 13/1

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Tue 20/1

18:30-10:15

1 stop9h 45m

€428

ShannonChicago

SNN - ORD

SNNORD

Shannon

Tue 27/1

20:05-15:25

1 stop25h 20m

Chicago O'Hare Intl

Tue 3/2

18:25-11:30

1 stop11h 05m

€491

CorkChicago

ORK - ORD

ORKORD

Cork

Tue 27/1

07:40-15:25

1 stop13h 45m

Chicago O'Hare Intl

Tue 3/2

18:25-15:25

1 stop15h 00m

€491

CorkChicago

ORK - ORD

ORKORD

Cork

Wed 11/2

07:40-15:25

1 stop13h 45m

Chicago O'Hare Intl

Sun 15/2

18:35-11:10

1 stop10h 35m

€646

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 5/3

09:30-19:13

2 stops15h 43m

Lambert-St Louis

Mon 9/3

15:23-09:55

2 stops13h 32m

€828

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 5/3

10:40-16:04

1 stop11h 24m

Lambert-St Louis

Mon 9/3

17:41-09:55

1 stop11h 14m

€829

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Wed 6/5

12:45-19:30

1 stop12h 45m

Lambert-St Louis

Wed 20/5

07:20-09:45

1 stop20h 25m

€875

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 €400, 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 €402.

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

According to our data, Wednesday is the cheapest day to fly to Illinois from Ireland. The lowest ticket price found for a Wednesday departure recently was €628. 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 €731.

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 evening. momondo users have found flights departing from Ireland to Illinois in the evening for as low as €516. 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 €666. 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 €515 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 €462 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?

No. A direct flight is the cheapest option for a flight between 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

€376

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 €376. The best return flight deal from Ireland to Illinois found on momondo in the last 72 hours is €529.
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?

  • 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
IcelandairPriceFrom €376Free CancellationRating
7.0
590 reviews
Search Icelandair flights
Aer LingusPriceFrom €388Free CancellationRating
7.2
1,394 reviews
Search Aer Lingus flights
United AirlinesPriceFrom €395Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
British AirwaysPriceFrom €397Free CancellationRating
6.7
7,575 reviews
Search British Airways flights
American AirlinesPriceFrom €507Free CancellationRating
7.2
11,051 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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