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Cheap flights from Ireland to Illinois from €210

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 14/4. 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
19:05 - 16:45
DUB
-
ORD
27h 40m
1 stop
Scandinavian Airlines Logo
20:20 - 18:20
ORD
-
DUB
17h 00m
1 stop
€363Scandinavian Airlines
Sun, 1 Mar - Mon, 9 Mar
Scandinavian Airlines Logo
10:10 - 16:45
DUB
-
ORD
12h 35m
1 stop
Scandinavian Airlines Logo
19:20 - 18:20
ORD
-
DUB
17h 00m
1 stop
€365Scandinavian Airlines
Sat, 21 Feb - Wed, 25 Feb
Scandinavian Airlines Logo
12:40 - 16:10
DUB
-
ORD
33h 30m
1 stop
Scandinavian Airlines Logo
19:15 - 18:20
ORD
-
DUB
17h 05m
1 stop
€377Scandinavian Airlines
Fri, 17 Apr - Mon, 20 Apr
Finnair Logo
09:30 - 11:30
DUB
-
ORD
8h 00mdirect
Finnair Logo
22:25 - 11:50
ORD
-
DUB
7h 25mdirect
€378Finnair
Fri, 15 May - Mon, 25 May
Icelandair Logo
11:30 - 17:20
DUB
-
ORD
11h 50m
1 stop
Icelandair Logo
19:30 - 10:15
ORD
-
DUB
9h 45m
1 stop
€379Icelandair
Fri, 6 Mar - Tue, 17 Mar
British Airways Logo
20:05 - 15:25
SNN
-
ORD
25h 20m
1 stop
British Airways Logo
19:40 - 11:30
ORD
-
SNN
10h 50m
1 stop
€523British Airways
Mon, 2 Mar - Mon, 9 Mar
British Airways Logo
07:50 - 15:25
SNN
-
ORD
13h 35m
1 stop
British Airways Logo
19:40 - 11:30
ORD
-
SNN
10h 50m
1 stop
€544British Airways
Wed, 4 Mar - Wed, 18 Mar
American Airlines Logo
07:50 - 17:00
SNN
-
ORD
15h 10m
1 stop
American Airlines Logo
18:30 - 16:45
ORD
-
SNN
16h 15m
1 stop
€578American Airlines
Sat, 28 Feb - Wed, 4 Mar
American Airlines Logo
07:50 - 17:00
SNN
-
ORD
15h 10m
1 stop
American Airlines Logo
13:40 - 16:45
ORD
-
SNN
21h 05m
2 stops
€578American Airlines
Sat, 28 Feb - Wed, 4 Mar
United Airlines Logo
09:00 - 15:29
DUB
-
STL
12h 29m
1 stop
United Airlines Logo
17:41 - 09:55
STL
-
DUB
10h 14m
1 stop
€821United Airlines
Fri, 27 Feb - Tue, 3 Mar

Finnair flights from Ireland to Illinois

Our best Finnair deals on Ireland to Illinois flight tickets
Finnair
15 May
DUB09:30Dublin
8h 00m
ORD11:30Chicago O'Hare Intl
25 May
ORD22:25Chicago O'Hare Intl
7h 25m
DUB11:50Dublin
€378
Finnair
15 May
DUB09:30Dublin
8h 00m
ORD11:30Chicago O'Hare Intl
25 May
ORD22:25Chicago O'Hare Intl
7h 25m
DUB11:50Dublin
€380
Finnair
22 Apr
DUB09:30Dublin
16h 27m
1 stop
ORD19:57Chicago O'Hare Intl
26 Apr
ORD12:30Chicago O'Hare Intl
15h 15m
1 stop
DUB09:45Dublin
€404

KLM flights from Ireland to Illinois

Our best KLM deals on Ireland to Illinois flight tickets
KLM
13 Feb
DUB08:50Dublin
11h 30m
1 stop
ORD14:20Chicago O'Hare Intl
20 Feb
ORD16:25Chicago O'Hare Intl
14h 15m
1 stop
DUB12:40Dublin
€454
KLM
12 Feb
DUB08:50Dublin
14h 47m
2 stops
MDW17:37Chicago Midway
20 Feb
MDW18:40Chicago Midway
31h 05m
1 stop
DUB07:45Dublin
€458
KLM
16 Feb
ORK06:00Cork
14h 20m
1 stop
ORD14:20Chicago O'Hare Intl
23 Feb
ORD16:25Chicago O'Hare Intl
25h 00m
1 stop
ORK23:25Cork
€459

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 4 February 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

Sun 1/3

19:05-16:45

1 stop27h 40m

Chicago O'Hare Intl

Mon 9/3

20:20-18:20

1 stop17h 00m

€363

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 21/2

10:10-16:45

1 stop12h 35m

Chicago O'Hare Intl

Wed 25/2

19:20-18:20

1 stop17h 00m

€365

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 17/4

12:40-16:10

1 stop33h 30m

Chicago O'Hare Intl

Mon 20/4

19:15-18:20

1 stop17h 05m

€377

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 15/5

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Mon 25/5

22:25-11:50

Nonstop7h 25m

€378

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 6/3

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Tue 17/3

19:30-10:15

1 stop9h 45m

€379

ShannonChicago

SNN - ORD

SNNORD

Shannon

Mon 2/3

20:05-15:25

1 stop25h 20m

Chicago O'Hare Intl

Mon 9/3

19:40-11:30

1 stop10h 50m

€523

ShannonChicago

SNN - ORD

SNNORD

Shannon

Wed 4/3

07:50-15:25

1 stop13h 35m

Chicago O'Hare Intl

Wed 18/3

19:40-11:30

1 stop10h 50m

€544

ShannonChicago

SNN - ORD

SNNORD

Shannon

Sat 28/2

07:50-17:00

1 stop15h 10m

Chicago O'Hare Intl

Wed 4/3

18:30-16:45

1 stop16h 15m

€578

ShannonChicago

SNN - ORD

SNNORD

Shannon

Sat 28/2

07:50-17:00

1 stop15h 10m

Chicago O'Hare Intl

Wed 4/3

13:40-16:45

2 stops21h 05m

€578

DublinSt. Louis

DUB - STL

DUBSTL

Dublin

Fri 27/2

09:00-15:29

1 stop12h 29m

Lambert-St Louis

Tue 3/3

17:41-09:55

1 stop10h 14m

€821

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 November. 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 November, then December is your next best option. Flight prices from Ireland to Illinois during December average around €435.

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 €618. 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 €714.

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 €591. 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 €686. 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 €521 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 €447 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

€582

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 €582. The best return flight deal from Ireland to Illinois found on momondo in the last 72 hours is €531.
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 €370Free CancellationRating
7.1
606 reviews
Search Icelandair flights
Aer LingusPriceFrom €394Free CancellationRating
7.2
1,445 reviews
Search Aer Lingus flights
British AirwaysPriceFrom €395Free CancellationRating
6.7
7,716 reviews
Search British Airways flights
United AirlinesPriceFrom €402Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
American AirlinesPriceFrom €536Free CancellationRating
7.2
11,227 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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Find better results for your trip to Illinois

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