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

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

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

The number of flights available between Illinois and Ireland is 103 per week as of August 2025. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.

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

14 flights are operational daily from Illinois to Ireland as of August 2025. The most popular departure time for this route is 20:00, with 82% of flights per day taking off in the evening.

When did momondo last update prices for flights from Illinois to Ireland?

Prices for flights from Illinois to Ireland are updated daily.

How many operators does momondo search for flights from Illinois to Ireland?

There are 3 operators available for flights from Illinois to Ireland as of August 2025.

How old do you have to be to fly from Illinois to Ireland?

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 Illinois to Ireland.

What documentation or ID do you need to fly to Ireland?

The required travel and health documents for your Ireland trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

€184 Cheap Flights from Illinois to Ireland in 2025

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Find the cheapest flights from Illinois to Ireland

Round-trip

One-way

Last minute

Direct

Cheap return flights

11:05 - 08:10STL-DUB

15h 05m1 stop

09:00 - 15:29DUB-STL

12h 29m1 stop

€343United Airlines

Find Deal

Tue, 18 Nov - Wed, 26 Nov

06:30 - 07:10STL-DUB

18h 40m2 stops

09:00 - 15:29DUB-STL

12h 29m1 stop

€345Air Canada

Find Deal

Tue, 18 Nov - Wed, 26 Nov

20:15 - 16:10ORD-DUB

13h 55m1 stop

04:25 - 15:15DUB-ORD

16h 50m1 stop

€346TAP AIR PORTUGAL

Find Deal

Fri, 7 Nov - Thu, 13 Nov

20:15 - 23:20ORD-DUB

21h 05m1 stop

04:25 - 15:15DUB-ORD

16h 50m1 stop

€347TAP AIR PORTUGAL

Find Deal

Fri, 7 Nov - Thu, 13 Nov

19:20 - 09:25ORD-DUB

32h 05m1 stop

18:55 - 16:45DUB-ORD

27h 50m2 stops

€352Scandinavian Airlines

Find Deal

Fri, 7 Nov - Fri, 14 Nov

12:21 - 09:45STL-DUB

15h 24m1 stop

11:30 - 20:55DUB-STL

15h 25m1 stop

€353Iberia

Find Deal

Tue, 21 Oct - Wed, 5 Nov

19:20 - 09:25ORD-DUB

32h 05m1 stop

10:10 - 16:45DUB-ORD

12h 35m1 stop

€353Scandinavian Airlines

Find Deal

Fri, 7 Nov - Sat, 15 Nov

05:11 - 07:10STL-DUB

20h 59m1 stop

11:30 - 17:37DUB-STL

12h 07m1 stop

€359

Find Deal

Sun, 26 Oct - Thu, 6 Nov

07:01 - 07:10STL-DUB

19h 09m1 stop

11:30 - 00:05DUB-STL

18h 35m2 stops

€362

Find Deal

Sun, 26 Oct - Thu, 6 Nov

13:20 - 07:10STL-DUB

11h 50m1 stop

11:30 - 20:55DUB-STL

15h 25m1 stop

€395Iberia

Find Deal

Fri, 7 Nov - Thu, 13 Nov

United Airlines flights from Illinois to Ireland

Our best United Airlines deals on Illinois to Ireland flight tickets

United Airlines

18 Nov

STL11:05Lambert-St Louis

15h 05m

1 stop

DUB08:10Dublin

26 Nov

DUB09:00Dublin

12h 29m

1 stop

STL15:29Lambert-St Louis

€343

Find similar

United Airlines

18 Nov

STL15:14Lambert-St Louis

10h 56m

1 stop

DUB08:10Dublin

26 Nov

DUB09:00Dublin

20h 44m

2 stops

STL23:44Lambert-St Louis

€352

Find similar

United Airlines

21 Oct

STL16:05Lambert-St Louis

10h 10m

1 stop

DUB08:15Dublin

5 Nov

DUB09:00Dublin

20h 44m

2 stops

STL23:44Lambert-St Louis

€353

Find similar

Air Canada flights from Illinois to Ireland

Our best Air Canada deals on Illinois to Ireland flight tickets

Air Canada

18 Nov

STL06:30Lambert-St Louis

18h 40m

2 stops

DUB07:10Dublin

26 Nov

DUB09:00Dublin

12h 29m

1 stop

STL15:29Lambert-St Louis

€345

Find similar

Air Canada

21 Oct

STL16:05Lambert-St Louis

10h 10m

1 stop

DUB08:15Dublin

5 Nov

DUB09:00Dublin

35h 25m

2 stops

STL14:25Lambert-St Louis

€358

Find similar

Air Canada

17 Aug

STL13:30Lambert-St Louis

12h 15m

1 stop

DUB07:45Dublin

2 Sept

DUB09:20Dublin

16h 37m

1 stop

STL19:57Lambert-St Louis

€379

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 18/11

11:05-08:10

1 stop15h 05m

Dublin

Wed 26/11

09:00-15:29

1 stop12h 29m

€343

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 18/11

06:30-07:10

2 stops18h 40m

Dublin

Wed 26/11

09:00-15:29

1 stop12h 29m

€345

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Fri 7/11

20:15-16:10

1 stop13h 55m

Dublin

Thu 13/11

04:25-15:15

1 stop16h 50m

€346

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Fri 7/11

20:15-23:20

1 stop21h 05m

Dublin

Thu 13/11

04:25-15:15

1 stop16h 50m

€347

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Fri 7/11

19:20-09:25

1 stop32h 05m

Dublin

Fri 14/11

18:55-16:45

2 stops27h 50m

€352

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Tue 21/10

12:21-09:45

1 stop15h 24m

Dublin

Wed 5/11

11:30-20:55

1 stop15h 25m

€353

ChicagoDublin

ORD - DUB

ORDDUB

Chicago O'Hare Intl

Fri 7/11

19:20-09:25

1 stop32h 05m

Dublin

Sat 15/11

10:10-16:45

1 stop12h 35m

€353

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 26/10

05:11-07:10

1 stop20h 59m

Dublin

Thu 6/11

11:30-17:37

1 stop12h 07m

€359

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Sun 26/10

07:01-07:10

1 stop19h 09m

Dublin

Thu 6/11

11:30-00:05

2 stops18h 35m

€362

St. LouisDublin

STL - DUB

STLDUB

Lambert-St Louis

Fri 7/11

13:20-07:10

1 stop11h 50m

Dublin

Thu 13/11

11:30-20:55

1 stop15h 25m

€395

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 Illinois to Ireland

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 Ireland?

The month of January is another great option to travel to Ireland, with average flight prices from Illinois averaging around €473.

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

The cheapest day to depart on your flight to Ireland is on a Thursday when prices can be found for as low as €595. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around €741. These prices are subject to change though, so be sure to set up a Price Alert for flights to Ireland.

What is the cheapest time of day to depart on your flight to Ireland?

In the evening is the cheapest time of day to fly from Illinois to Ireland when you can find flight prices for as low as €631. Flying to Ireland in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Ireland is at midday when prices are around €786.

What is the cheapest Illinois to Ireland flight route?

Fly from Chicago O'Hare Intl to Dublin for the best Illinois - Ireland flight prices

How far in advance should I book a flight to Ireland?

You are more likely to see cheaper flights to Ireland from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Ireland for around €597 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ireland from Illinois for as low as €544 on momondo.

What cabin class options are available on Illinois to Ireland flights?

There are 1 cabin classes available to choose from on Illinois to Ireland 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 Illinois to Ireland flights?

You could potentially save up to 19% on your flight if you consider stops on a Illinois to Ireland flight.

Cheap Illinois to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Ireland

Best price found	€184
Fastest flight time	7h 25m
Direct flights	Every day
Airports in Ireland	3 airports

The best one-way flight to Ireland from Illinois in the past 72 hours is €184. The best return flight deal from Illinois to Ireland found on momondo in the last 72 hours is €343.

The fastest flight from Illinois to Ireland takes 7h 25m

Direct flights go from Illinois to Ireland every day.

There are 3 airports near Ireland: Dublin (DUB), Shannon (SNN), Cork (ORK)

Search flight deals

When did momondo last update prices for flights from Illinois to Ireland?
Prices for flights from Illinois to Ireland are updated daily.
How many operators does momondo search for flights from Illinois to Ireland?
There are 3 operators available for flights from Illinois to Ireland as of August 2025.
How old do you have to be to fly from Illinois to Ireland?
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 Illinois to Ireland.
What documentation or ID do you need to fly to Ireland?
The required travel and health documents for your Ireland trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Illinois to Ireland?
Based on momondo bookings for flights between Illinois and Ireland, the leading plane model is Boeing 787-8 Dreamliner, making up 47.38% of the total bookings. Other popular models include Boeing 787 Dreamliner with 16.48%, Airbus A330 with 11.75%, and Boeing 787-10 Dreamliner with 4.00%.

Best airlines flying from Illinois to Ireland

Compare and see reviews for airlines that fly from Illinois to Ireland with momondo

Airline	Rating	Free Cancellation	Price
Aer Lingus	PriceFrom €458	Free Cancellation	Rating 7.1 1,197 reviews		Search Aer Lingus flights
United Airlines	PriceFrom €560	Free Cancellation	Rating 7.4 8,916 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Ireland?

Finding the right flight to Ireland from Illinois is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Ireland quick and easy, saving you time and money.

Can I find flights from Illinois to Ireland with flexible booking policies on momondo?

All flight searches from Illinois to Ireland on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Illinois to Ireland?

Once you have performed a search for Illinois to Ireland flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Illinois to Ireland right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Ireland, momondo offers a useful price alert feature which will track prices for flights to Ireland from Illinois and alert you when they change.

An easier way to manage your Ireland trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

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Find better results for your trip to Ireland

Popular Cities in Ireland

Flights to Dublinfrom €40

Flights to Corkfrom €107

Flights to Shannon, Clarefrom €119

Flights to Donegalfrom €66

Flights to Milltown (Kerry)from €40

Cheap flights from Illinois to Ireland from €184

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Ireland departing on 27/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Illinois to Ireland

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

United Airlines flights from Illinois to Ireland

Our best United Airlines deals on Illinois to Ireland flight tickets

Air Canada flights from Illinois to Ireland

Our best Air Canada deals on Illinois to Ireland flight tickets

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Use the filters below to find and compare flights from Illinois to Ireland that are best for you.

See travel insights to Ireland from

How to get the cheapest flight ticket from Illinois to Ireland

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 Ireland?

The month of January is another great option to travel to Ireland, with average flight prices from Illinois averaging around €473.

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

What is the cheapest time of day to depart on your flight to Ireland?

What is the cheapest Illinois to Ireland flight route?

Fly from Chicago O'Hare Intl to Dublin for the best Illinois - Ireland flight prices

How far in advance should I book a flight to Ireland?

What cabin class options are available on Illinois to Ireland flights?

There are 1 cabin classes available to choose from on Illinois to Ireland 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 Illinois to Ireland flights?

You could potentially save up to 19% on your flight if you consider stops on a Illinois to Ireland flight.

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

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

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

14 flights are operational daily from Illinois to Ireland as of August 2025. The most popular departure time for this route is 20:00, with 82% of flights per day taking off in the evening.

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

The number of flights available between Illinois and Ireland is 103 per week as of August 2025. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.

Cheap Illinois to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Ireland

Best price found

Fastest flight time

Direct flights

Airports in Ireland

When did momondo last update prices for flights from Illinois to Ireland?

How many operators does momondo search for flights from Illinois to Ireland?

How old do you have to be to fly from Illinois to Ireland?

What documentation or ID do you need to fly to Ireland?

What is the most popular plane model from Illinois to Ireland?

Best airlines flying from Illinois to Ireland

Compare and see reviews for airlines that fly from Illinois to Ireland with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Ireland?

Can I find flights from Illinois to Ireland with flexible booking policies on momondo?

How can momondo help me find flights from Illinois to Ireland?

I’m not ready to book a flight from Illinois to Ireland right now. Can momondo alert me if prices change?

An easier way to manage your Ireland trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ireland

Popular Cities in Ireland

Popular flights according to clicks in the last 7 days on momondo