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Cheap flights from Ireland to Illinois from €293

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 31/3. 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.
Finnair Logo
09:30 - 11:30
DUB
-
ORD
8h 00mdirect
Finnair Logo
22:25 - 11:50
ORD
-
DUB
7h 25mdirect
€373Finnair
Wed, 13 May - Tue, 26 May
Finnair Logo
09:30 - 11:30
DUB
-
ORD
8h 00mdirect
Finnair Logo
22:25 - 11:50
ORD
-
DUB
7h 25mdirect
€373Finnair
Wed, 13 May - Tue, 26 May
United Airlines Logo
10:40 - 13:30
DUB
-
ORD
8h 50mdirect
United Airlines Logo
13:00 - 07:30
ORD
-
DUB
12h 30m
1 stop
€389United Airlines
Wed, 11 Feb - Sat, 21 Feb
KLM Logo
06:00 - 14:20
ORK
-
ORD
14h 20m
1 stop
KLM Logo
17:20 - 15:00
ORD
-
ORK
15h 40m
1 stop
€455KLM
Mon, 2 Feb - Sun, 8 Feb
KLM Logo
09:45 - 18:40
DUB
-
MDW
14h 55m
1 stop
KLM Logo
14:05 - 07:45
MDW
-
DUB
12h 40m
1 stop
€455KLM
Mon, 2 Mar - Sun, 8 Mar
British Airways Logo
07:50 - 15:25
SNN
-
ORD
13h 35m
1 stop
British Airways Logo
18:30 - 16:45
ORD
-
SNN
16h 15m
1 stop
€514British Airways
Thu, 5 Feb - Thu, 26 Feb
British Airways Logo
07:50 - 17:00
SNN
-
ORD
15h 10m
1 stop
British Airways Logo
11:40 - 11:30
ORD
-
SNN
18h 50m
2 stops
€563British Airways
Thu, 5 Mar - Mon, 9 Mar
American Airlines Logo
11:30 - 23:35
DUB
-
STL
18h 05m
2 stops
American Airlines Logo
14:21 - 17:00
STL
-
DUB
20h 39m
2 stops
€746American Airlines
Fri, 27 Feb - Tue, 3 Mar
American Airlines Logo
11:30 - 22:52
DUB
-
STL
17h 22m
1 stop
American Airlines Logo
14:21 - 17:00
STL
-
DUB
20h 39m
2 stops
€750American Airlines
Fri, 27 Feb - Tue, 3 Mar
United Airlines Logo
09:00 - 15:29
DUB
-
STL
12h 29m
1 stop
United Airlines Logo
13:11 - 08:10
STL
-
DUB
12h 59m
1 stop
€818United Airlines
Fri, 27 Feb - Tue, 3 Mar

United Airlines flights from Ireland to Illinois

Our best United Airlines deals on Ireland to Illinois flight tickets
United Airlines
11 Feb
DUB10:40Dublin
8h 50m
ORD13:30Chicago O'Hare Intl
21 Feb
ORD13:00Chicago O'Hare Intl
12h 30m
1 stop
DUB07:30Dublin
€389
United Airlines
9 Feb
DUB09:30Dublin
13h 26m
1 stop
ORD16:56Chicago O'Hare Intl
21 Feb
ORD14:30Chicago O'Hare Intl
11h 00m
1 stop
DUB07:30Dublin
€393
United Airlines
23 Feb
DUB09:00Dublin
12h 10m
1 stop
ORD15:10Chicago O'Hare Intl
5 Mar
ORD13:09Chicago O'Hare Intl
15h 11m
2 stops
DUB10:20Dublin
€448

Scandinavian Airlines flights from Ireland to Illinois

Our best Scandinavian Airlines deals on Ireland to Illinois flight tickets
Scandinavian Airlines
22 Feb
DUB19:05Dublin
27h 40m
1 stop
ORD16:45Chicago O'Hare Intl
4 Mar
ORD19:20Chicago O'Hare Intl
17h 00m
1 stop
DUB18:20Dublin
€398
Scandinavian Airlines
12 Mar
DUB19:05Dublin
27h 50m
1 stop
ORD17:55Chicago O'Hare Intl
16 Mar
ORD20:20Chicago O'Hare Intl
34h 25m
1 stop
DUB11:45Dublin
€402
Scandinavian Airlines
9 Mar
DUB20:20Dublin
50h 25m
2 stops
ORD17:45Chicago O'Hare Intl
19 Mar
ORD20:20Chicago O'Hare Intl
17h 00m
1 stop
DUB18:20Dublin
€404

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 21 January 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

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 13/5

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Tue 26/5

22:25-11:50

Nonstop7h 25m

€373

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 13/5

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Tue 26/5

22:25-11:50

Nonstop7h 25m

€373

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 11/2

10:40-13:30

Nonstop8h 50m

Chicago O'Hare Intl

Sat 21/2

13:00-07:30

1 stop12h 30m

€389

CorkChicago

ORK - ORD

ORKORD

Cork

Mon 2/2

06:00-14:20

1 stop14h 20m

Chicago O'Hare Intl

Sun 8/2

17:20-15:00

1 stop15h 40m

€455

DublinChicago

DUB - MDW

DUBMDW

Dublin

Mon 2/3

09:45-18:40

1 stop14h 55m

Chicago Midway

Sun 8/3

14:05-07:45

1 stop12h 40m

€455

ShannonChicago

SNN - ORD

SNNORD

Shannon

Thu 5/2

07:50-15:25

1 stop13h 35m

Chicago O'Hare Intl

Thu 26/2

18:30-16:45

1 stop16h 15m

€514

ShannonChicago

SNN - ORD

SNNORD

Shannon

Thu 5/3

07:50-17:00

1 stop15h 10m

Chicago O'Hare Intl

Mon 9/3

11:40-11:30

2 stops18h 50m

€563

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 27/2

11:30-23:35

2 stops18h 05m

Lambert-St Louis

Tue 3/3

14:21-17:00

2 stops20h 39m

€746

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 27/2

11:30-22:52

1 stop17h 22m

Lambert-St Louis

Tue 3/3

14:21-17:00

2 stops20h 39m

€750

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 27/2

09:00-15:29

1 stop12h 29m

Lambert-St Louis

Tue 3/3

13:11-08:10

1 stop12h 59m

€818

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 November. Flight prices, which tend to average around €403, are often lower during this time because this is during the off-season. If you’re not able to fly to Illinois in November, then December is your next best option. Flight prices from Ireland to Illinois during December average around €439.

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 €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, 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 €726.

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 €597. 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 in the morning because they tend to be around €673. 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 €526 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 €451 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

€670

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 €670. The best return flight deal from Ireland to Illinois found on momondo in the last 72 hours is €550.
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 €373Free CancellationRating
7.1
602 reviews
Search Icelandair flights
United AirlinesPriceFrom €396Free CancellationRating
7.4
9,188 reviews
Search United Airlines flights
Aer LingusPriceFrom €397Free CancellationRating
7.2
1,437 reviews
Search Aer Lingus flights
British AirwaysPriceFrom €398Free CancellationRating
6.7
7,690 reviews
Search British Airways flights
American AirlinesPriceFrom €509Free CancellationRating
7.2
11,169 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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