What is the cheapest airline that flies from Ireland to Illinois?

WestJet, TAP AIR PORTUGAL, and Aer Lingus are the most popular carriers operating from Ireland to Illinois

How long is the flight from Ireland to Illinois?

If you’re flying from a popular airport in Ireland, such as Dublin or Shannon, and flying into Illinois, then you can expect flight times to average 8h and 8h 20m, respectively.

How many flights depart from Ireland to Illinois on average per week?

As of August 2026, there are 148 flights per week flying from Ireland to Illinois. The most common day of the week flights depart is Wed, with 15% of flights taking off on this day.

Which airlines fly to Illinois?

Aer Lingus, United Airlines and Finnair are the top three most popular airlines that fly to Illinois from Ireland according to our data. Aer Lingus is the first choice among our users, with 64% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

How many flights depart from Ireland to Illinois on average per day?

As of August 2026, 21 flights take off from Ireland and land in Illinois each day. The most common flight departure time for this route is 11:00, with 81% of daily flights taking off at midday.

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?

As of August 2026, there are 4 operators available to choose from 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.

€178 Cheap Flights from Ireland to Illinois in 2026

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Find the cheapest flights from Ireland to Illinois

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One-way

Last minute

Direct

Recent return flight deals from Ireland to Illinois

Enter your travel dates to find the best prices.

06:15 - 14:15ORK Cork-ORD Chicago O'Hare Intl

14h 00m1 stop Amsterdam Schiphol

17:10 - 14:40ORD Chicago O'Hare Intl-ORK Cork

15h 30m1 stop Paris Charles de Gaulle

€473Multiple Airlines

Thu, 1 Oct - Thu, 8 Oct

06:15 - 14:15ORK Cork-ORD Chicago O'Hare Intl

14h 00m1 stop Amsterdam Schiphol

17:10 - 14:40ORD Chicago O'Hare Intl-ORK Cork

15h 30m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

€474Multiple Airlines

Fri, 4 Sep - Tue, 8 Sep

16:45 - 19:15DUB Dublin-ORD Chicago O'Hare Intl

8h 30mdirect

15:55 - 05:15ORD Chicago O'Hare Intl-DUB Dublin

7h 20mdirect

€520Aer Lingus

Thu, 22 Oct - Sun, 1 Nov

16:45 - 19:15DUB Dublin-ORD Chicago O'Hare Intl

8h 30mdirect

15:55 - 05:15ORD Chicago O'Hare Intl-DUB Dublin

7h 20mdirect

€520Aer Lingus

Wed, 21 Oct - Sun, 1 Nov

11:45 - 19:51DUB Dublin-ORD Chicago O'Hare Intl

14h 06m1 stop Charlotte Douglas

21:30 - 17:15ORD Chicago O'Hare Intl-DUB Dublin

13h 45m1 stop Helsinki-Vantaa

€526Finnair

Wed, 7 Oct - Tue, 13 Oct

11:45 - 19:51DUB Dublin-ORD Chicago O'Hare Intl

14h 06m1 stop Charlotte Douglas

21:30 - 17:15ORD Chicago O'Hare Intl-DUB Dublin

13h 45m1 stop Helsinki-Vantaa

€526Finnair

Wed, 7 Oct - Mon, 12 Oct

11:30 - 19:59DUB Dublin-ORD Chicago O'Hare Intl

14h 29m2 stops Philadelphia Washington, D.C. Reagan-National

21:11 - 08:30ORD Chicago O'Hare Intl-DUB Dublin

29h 19m1 stop Philadelphia

€605American Airlines

Fri, 20 Nov - Sat, 21 Nov

11:30 - 19:56DUB Dublin-ORD Chicago O'Hare Intl

14h 26m2 stops Philadelphia Washington, D.C. Reagan-National

21:11 - 08:30ORD Chicago O'Hare Intl-DUB Dublin

29h 19m1 stop Philadelphia

€605American Airlines

Wed, 18 Nov - Sat, 21 Nov

09:00 - 15:38DUB Dublin-ORD Chicago O'Hare Intl

12h 38m1 stop Toronto Pearson Intl

18:30 - 08:10ORD Chicago O'Hare Intl-DUB Dublin

7h 40mdirect

€626United Airlines

Sat, 21 Nov - Sun, 22 Nov

10:40 - 13:20DUB Dublin-ORD Chicago O'Hare Intl

8h 40mdirect

18:30 - 08:10ORD Chicago O'Hare Intl-DUB Dublin

7h 40mdirect

€627United Airlines

Thu, 12 Nov - Tue, 17 Nov

Recent last minute flight deals from Ireland to Illinois

Enter your travel dates to find the best prices.

21:15 - 12:30SNN Shannon-ORD Chicago O'Hare Intl

21h 15m1 stop London Heathrow

18:15 - 11:20ORD Chicago O'Hare Intl-SNN Shannon

11h 05m1 stop London Heathrow

€640Multiple Airlines

Mon, 24 Aug - Mon, 31 Aug

06:25 - 18:15DUB Dublin-ORD Chicago O'Hare Intl

17h 50m2 stops London Gatwick Reykjavik Keflavik Intl

19:25 - 23:25ORD Chicago O'Hare Intl-DUB Dublin

22h 00m2 stops Reykjavik Keflavik Intl London Gatwick

€640Multiple Airlines

Tue, 25 Aug - Tue, 8 Sep

11:40 - 16:10DUB Dublin-ORD Chicago O'Hare Intl

34h 30m2 stops Stockholm Arlanda Kastrup Copenhagen

19:15 - 18:20ORD Chicago O'Hare Intl-DUB Dublin

17h 05m1 stop Kastrup Copenhagen

€657Scandinavian Airlines

Tue, 25 Aug - Tue, 8 Sep

09:30 - 11:30DUB Dublin-ORD Chicago O'Hare Intl

8h 00mdirect

22:20 - 11:50ORD Chicago O'Hare Intl-DUB Dublin

7h 30mdirect

€662Finnair

Mon, 24 Aug - Sun, 30 Aug

21:15 - 14:25SNN Shannon-ORD Chicago O'Hare Intl

23h 10m2 stops London Heathrow Madrid Barajas

18:15 - 11:20ORD Chicago O'Hare Intl-SNN Shannon

11h 05m1 stop London Heathrow

€662Multiple Airlines

Mon, 24 Aug - Mon, 31 Aug

11:35 - 14:00DUB Dublin-ORD Chicago O'Hare Intl

8h 25mdirect

21:00 - 10:35ORD Chicago O'Hare Intl-DUB Dublin

7h 35mdirect

€683Aer Lingus

Sat, 22 Aug - Tue, 15 Sep

11:35 - 14:00DUB Dublin-ORD Chicago O'Hare Intl

8h 25mdirect

21:00 - 10:35ORD Chicago O'Hare Intl-DUB Dublin

7h 35mdirect

€691Aer Lingus

Sun, 23 Aug - Mon, 31 Aug

09:30 - 11:50SNN Shannon-ORD Chicago O'Hare Intl

8h 20mdirect

18:05 - 07:30ORD Chicago O'Hare Intl-SNN Shannon

7h 25mdirect

€755United Airlines

Mon, 24 Aug - Mon, 31 Aug

09:30 - 11:50SNN Shannon-ORD Chicago O'Hare Intl

8h 20mdirect

08:40 - 10:15ORD Chicago O'Hare Intl-SNN Shannon

19h 35m1 stop Newark

€758United Airlines

Mon, 24 Aug - Mon, 31 Aug

12:30 - 23:26SNN Shannon-ORD Chicago O'Hare Intl

16h 56m2 stops Newark Houston George Bush Intcntl

16:00 - 10:15ORD Chicago O'Hare Intl-SNN Shannon

12h 15m2 stops Washington, D.C. Reagan-National Newark

€763United Airlines

Mon, 24 Aug - Mon, 31 Aug

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Delta flights from Ireland to Illinois

Our best Delta deals on Ireland to Illinois flight tickets

Delta

3 Sept

ORK06:15Cork

14h 00m

1 stop

ORD14:15Chicago O'Hare Intl

7 Sept

ORD15:20Chicago O'Hare Intl

17h 20m

2 stops

ORK14:40Cork

€474

Delta

4 Sept

ORK06:15Cork

14h 00m

1 stop

ORD14:15Chicago O'Hare Intl

8 Sept

ORD16:15Chicago O'Hare Intl

12h 05m

1 stop

ORK10:20Cork

€478

Delta

3 Sept

ORK10:50Cork

15h 40m

2 stops

ORD20:30Chicago O'Hare Intl

7 Sept

ORD15:20Chicago O'Hare Intl

17h 20m

2 stops

ORK14:40Cork

€479

American Airlines flights from Ireland to Illinois

Our best American Airlines deals on Ireland to Illinois flight tickets

American Airlines

3 Sept

DUB11:35Dublin

8h 25m

ORD14:00Chicago O'Hare Intl

9 Sept

ORD21:00Chicago O'Hare Intl

7h 35m

DUB10:35Dublin

€629

American Airlines

28 Aug

SNN14:30Shannon

33h 27m

1 stop

ORD17:57Chicago O'Hare Intl

5 Sept

ORD12:40Chicago O'Hare Intl

11h 20m

1 stop

SNN06:00Shannon

€630

American Airlines

28 Aug

SNN21:15Shannon

26h 00m

1 stop

ORD17:15Chicago O'Hare Intl

5 Sept

ORD11:15Chicago O'Hare Intl

12h 45m

1 stop

SNN06:00Shannon

€653

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CorkChicago

ORK Cork - ORD Chicago O'Hare Intl

ORKORD

Cork

Thu 1/10

06:15-14:15

1 stop14h 00m

Chicago O'Hare Intl

Thu 8/10

17:10-14:40

1 stop15h 30m

€473

CorkChicago

ORK Cork - ORD Chicago O'Hare Intl

ORKORD

Cork

Fri 4/9

06:15-14:15

1 stop14h 00m

Chicago O'Hare Intl

Tue 8/9

17:10-14:40

2 stops15h 30m

€474

Fastest return journey

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 22/10

16:45-19:15

Nonstop8h 30m

Chicago O'Hare Intl

Sun 1/11

15:55-05:15

Nonstop7h 20m

€520

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 21/10

16:45-19:15

Nonstop8h 30m

Chicago O'Hare Intl

Sun 1/11

15:55-05:15

Nonstop7h 20m

€520

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 7/10

11:45-19:51

1 stop14h 06m

Chicago O'Hare Intl

Tue 13/10

21:30-17:15

1 stop13h 45m

€526

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 7/10

11:45-19:51

1 stop14h 06m

Chicago O'Hare Intl

Mon 12/10

21:30-17:15

1 stop13h 45m

€526

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Fri 20/11

11:30-19:59

2 stops14h 29m

Chicago O'Hare Intl

Sat 21/11

21:11-08:30

1 stop29h 19m

€605

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 18/11

11:30-19:56

2 stops14h 26m

Chicago O'Hare Intl

Sat 21/11

21:11-08:30

1 stop29h 19m

€605

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Sat 21/11

09:00-15:38

1 stop12h 38m

Chicago O'Hare Intl

Sun 22/11

18:30-08:10

Nonstop7h 40m

€626

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 12/11

10:40-13:20

Nonstop8h 40m

Chicago O'Hare Intl

Tue 17/11

18:30-08:10

Nonstop7h 40m

€627

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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 €407, 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 €526.

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 €630. 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 €771.

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 €603. 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 €699. 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 €584 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 €491 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	€178
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 €178. The best return flight deal from Ireland to Illinois found on momondo in the last 72 hours is €473.

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

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?
As of August 2026, there are 4 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Ireland to Illinois is Boeing 787-8 Dreamliner (32.70% of total bookings). The next most popular plane models are Airbus A330-300 (27.58%), Boeing 787 Dreamliner (13.20%), and Airbus A330 (8.69%).

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 Lingus	PriceFrom €398	Free Cancellation	Rating 7.3 1,711 reviews	Search Aer Lingus flights
Finnair	PriceFrom €402	Free Cancellation	Rating 7.6 1,427 reviews	Search Finnair flights
United Airlines	PriceFrom €405	Free Cancellation	Rating 7.4 10,107 reviews	Search United Airlines flights
American Airlines	PriceFrom €418	Free Cancellation	Rating 7.1 11,980 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.