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Cheap flights from Ireland to Illinois from €273

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 7/7. 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.
KLM Logo
13:05 - 21:36
SNN
-
ORD
14h 31m
1 stop
KLM Logo
06:05 - 11:10
ORD
-
SNN
23h 05m
1 stop
€456KLM
Fri, 5 Jun - Mon, 8 Jun
KLM Logo
13:05 - 21:36
SNN
-
ORD
14h 31m
1 stop
KLM Logo
06:05 - 11:10
ORD
-
SNN
23h 05m
1 stop
€457KLM
Mon, 1 Jun - Mon, 15 Jun
Multiple Airlines Logo
07:50 - 18:45
SNN
-
ORD
16h 55m
1 stop
Multiple Airlines Logo
17:10 - 11:30
ORD
-
SNN
12h 20m
1 stop
€464Multiple Airlines
Tue, 17 Nov - Mon, 23 Nov
Delta Logo
13:05 - 21:48
SNN
-
ORD
14h 43m
1 stop
Delta Logo
18:00 - 11:10
ORD
-
SNN
11h 10m
1 stop
€468Delta
Tue, 23 Jun - Mon, 29 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
€469Delta
Tue, 23 Jun - Mon, 29 Jun
KLM Logo
13:05 - 21:36
SNN
-
ORD
14h 31m
1 stop
KLM Logo
06:05 - 11:10
ORD
-
SNN
23h 05m
1 stop
€505KLM
Mon, 1 Jun - Sun, 28 Jun
Finnair Logo
09:30 - 11:29
DUB
-
ORD
7h 59mdirect
Finnair Logo
22:20 - 11:50
ORD
-
DUB
7h 30mdirect
€539Finnair
Wed, 24 Jun - Wed, 1 Jul
American Airlines Logo
12:40 - 00:39
DUB
-
ORD
17h 59m
1 stop
American Airlines Logo
13:38 - 06:30
ORD
-
DUB
10h 52m
1 stop
€544American Airlines
Fri, 12 Jun - Fri, 26 Jun
Multiple Airlines Logo
11:00 - 21:09
DUB
-
MDW
16h 09m
1 stop
Multiple Airlines Logo
10:55 - 08:45
MDW
-
DUB
15h 50m
1 stop
€547Multiple Airlines
Sat, 6 Jun - Sat, 13 Jun
Lufthansa Logo
08:50 - 13:25
DUB
-
STL
34h 35m
1 stop
Lufthansa Logo
11:59 - 07:30
STL
-
DUB
13h 31m
1 stop
€959Lufthansa
Thu, 1 Oct - Thu, 8 Oct

American Airlines flights from Ireland to Illinois

Our best American Airlines deals on Ireland to Illinois flight tickets
American Airlines
12 Jun
DUB12:40Dublin
17h 59m
1 stop
ORD00:39Chicago O'Hare Intl
26 Jun
ORD13:38Chicago O'Hare Intl
10h 52m
1 stop
DUB06:30Dublin
€544
American Airlines
16 Jun
DUB11:45Dublin
15h 26m
2 stops
ORD21:11Chicago O'Hare Intl
28 Jun
ORD15:00Chicago O'Hare Intl
12h 45m
1 stop
DUB09:45Dublin
€546
American Airlines
28 May
DUB11:45Dublin
15h 52m
1 stop
ORD21:37Chicago O'Hare Intl
12 Jun
ORD20:50Chicago O'Hare Intl
16h 35m
1 stop
DUB19:25Dublin
€549

Iberia flights from Ireland to Illinois

Our best Iberia deals on Ireland to Illinois flight tickets
Iberia
14 Jun
DUB09:30Dublin
8h 00m
ORD11:30Chicago O'Hare Intl
20 Jun
ORD16:49Chicago O'Hare Intl
10h 46m
1 stop
DUB09:35Dublin
€537
Iberia
19 Jun
DUB09:30Dublin
7h 59m
ORD11:29Chicago O'Hare Intl
21 Jun
ORD22:20Chicago O'Hare Intl
7h 30m
DUB11:50Dublin
€538
Iberia
4 Jun
DUB09:30Dublin
7h 59m
ORD11:29Chicago O'Hare Intl
13 Jun
ORD22:20Chicago O'Hare Intl
7h 30m
DUB11:50Dublin
€560

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 23 May 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 5/6

13:05-21:36

1 stop14h 31m

Chicago O'Hare Intl

Mon 8/6

06:05-11:10

1 stop23h 05m

€456

ShannonChicago

SNN - ORD

SNNORD

Shannon

Mon 1/6

13:05-21:36

1 stop14h 31m

Chicago O'Hare Intl

Mon 15/6

06:05-11:10

1 stop23h 05m

€457

ShannonChicago

SNN - ORD

SNNORD

Shannon

Tue 17/11

07:50-18:45

1 stop16h 55m

Chicago O'Hare Intl

Mon 23/11

17:10-11:30

1 stop12h 20m

€464

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

€468

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

€469

ShannonChicago

SNN - ORD

SNNORD

Shannon

Mon 1/6

13:05-21:36

1 stop14h 31m

Chicago O'Hare Intl

Sun 28/6

06:05-11:10

1 stop23h 05m

€505
Fastest return journey

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 24/6

09:30-11:29

Nonstop7h 59m

Chicago O'Hare Intl

Wed 1/7

22:20-11:50

Nonstop7h 30m

€539

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 12/6

12:40-00:39

1 stop17h 59m

Chicago O'Hare Intl

Fri 26/6

13:38-06:30

1 stop10h 52m

€544

DublinChicago

DUB - MDW

DUBMDW

Dublin

Sat 6/6

11:00-21:09

1 stop16h 09m

Chicago Midway

Sat 13/6

10:55-08:45

1 stop15h 50m

€547

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Thu 1/10

08:50-13:25

1 stop34h 35m

Lambert-St Louis

Thu 8/10

11:59-07:30

1 stop13h 31m

€959

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 €234, 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 €314.

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 €623. 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 €785.

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 €744. 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 €572 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 €416 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

€695

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 €695. The best return flight deal from Ireland to Illinois found on momondo in the last 72 hours is €652.
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 €400Free CancellationRating
7.3
1,576 reviews
Search Aer Lingus flights
FinnairPriceFrom €404Free CancellationRating
7.7
1,398 reviews
Search Finnair flights
United AirlinesPriceFrom €407Free CancellationRating
7.4
9,752 reviews
Search United Airlines flights
American AirlinesPriceFrom €420Free CancellationRating
7.1
11,645 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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