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Cheap flights from Ireland to Chicago from €257

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 Chicago departing on 6/11. 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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Find the cheapest flights from Ireland to Chicago

Recent return flight deals from Ireland to Chicago

Enter your travel dates to find the best prices.
Multiple Airlines Logo
05:10 - 14:55DUB-ORD
15h 45m2 stops
Multiple Airlines Logo
14:00 - 07:10ORD-DUB
11h 10m1 stop
€394Multiple Airlines
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Wed, 5 Nov - Tue, 11 Nov
Multiple Airlines Logo
05:00 - 14:55DUB-ORD
15h 55m2 stops
Multiple Airlines Logo
12:50 - 11:00ORD-DUB
16h 10m2 stops
€395Multiple Airlines
Find Deal
Tue, 25 Nov - Wed, 10 Dec
Scandinavian Airlines Logo
18:55 - 16:45DUB-ORD
27h 50m2 stops
Scandinavian Airlines Logo
19:20 - 18:20ORD-DUB
17h 00m1 stop
€396Scandinavian Airlines
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Fri, 7 Nov - Sun, 9 Nov
Multiple Airlines Logo
12:55 - 21:19DUB-ORD
14h 24m1 stop
Multiple Airlines Logo
20:45 - 14:10ORD-DUB
11h 25m1 stop
€397Multiple Airlines
Find Deal
Mon, 22 Dec - Thu, 15 Jan
Aer Lingus Logo
11:30 - 15:00DUB-ORD
8h 30mdirect
Aer Lingus Logo
15:50 - 05:10ORD-DUB
7h 20mdirect
€398Aer Lingus
Find Deal
Mon, 27 Oct - Wed, 5 Nov
Aer Lingus Logo
11:30 - 14:00DUB-ORD
8h 30mdirect
Aer Lingus Logo
15:50 - 05:10ORD-DUB
7h 20mdirect
€399Aer Lingus
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Wed, 12 Nov - Wed, 19 Nov
United Airlines Logo
13:35 - 23:44DUB-ORD
16h 09m2 stops
United Airlines Logo
14:30 - 10:20ORD-DUB
13h 50m1 stop
€409United Airlines
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Fri, 19 Dec - Sat, 3 Jan
American Airlines Logo
11:30 - 20:34DUB-ORD
15h 04m1 stop
American Airlines Logo
11:29 - 08:40ORD-DUB
15h 11m2 stops
€411American Airlines
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Fri, 12 Dec - Thu, 8 Jan
Icelandair Logo
11:30 - 17:20DUB-ORD
11h 50m1 stop
Icelandair Logo
18:30 - 10:15ORD-DUB
9h 45m1 stop
€418Icelandair
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Sun, 1 Mar - Fri, 6 Mar
American Airlines Logo
07:50 - 17:00SNN-ORD
15h 10m1 stop
American Airlines Logo
11:48 - 11:30ORD-SNN
17h 42m2 stops
€524American Airlines
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Thu, 6 Nov - Wed, 12 Nov

Scandinavian Airlines flights from Ireland to Chicago

Our best Scandinavian Airlines deals on Ireland to Chicago flight tickets
Scandinavian Airlines
7 Nov
DUB18:55Dublin
27h 50m
2 stops
ORD16:45Chicago O'Hare Intl
9 Nov
ORD19:20Chicago O'Hare Intl
17h 00m
1 stop
DUB18:20Dublin
€396
Find similar
Scandinavian Airlines
7 Nov
DUB18:55Dublin
27h 50m
2 stops
ORD16:45Chicago O'Hare Intl
9 Nov
ORD19:20Chicago O'Hare Intl
18h 15m
2 stops
DUB19:35Dublin
€400
Find similar
Scandinavian Airlines
1 Mar
DUB12:05Dublin
34h 40m
2 stops
ORD16:45Chicago O'Hare Intl
11 Mar
ORD20:20Chicago O'Hare Intl
17h 00m
1 stop
DUB18:20Dublin
€400
Find similar

United Airlines flights from Ireland to Chicago

Our best United Airlines deals on Ireland to Chicago flight tickets
United Airlines
19 Dec
DUB10:40Dublin
8h 50m
ORD13:30Chicago O'Hare Intl
3 Jan
ORD18:21Chicago O'Hare Intl
9h 59m
1 stop
DUB10:20Dublin
€409
Find similar
United Airlines
24 Oct
DUB09:20Dublin
16h 44m
1 stop
ORD20:04Chicago O'Hare Intl
29 Oct
ORD14:22Chicago O'Hare Intl
12h 08m
1 stop
DUB07:30Dublin
€608
Find similar
United Airlines
16 Oct
SNN12:30Shannon
14h 45m
2 stops
ORD21:15Chicago O'Hare Intl
20 Oct
ORD16:50Chicago O'Hare Intl
11h 25m
1 stop
SNN10:15Shannon
€691
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momondo Fare Finder

 
Customise your flight search to find flights from Ireland to Chicago 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 14 October 2025.
Use the filters below to find and compare flights from Ireland to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 5/11

05:10-14:55

2 stops15h 45m

Chicago O'Hare Intl

Tue 11/11

14:00-07:10

1 stop11h 10m

€394

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 25/11

05:00-14:55

2 stops15h 55m

Chicago O'Hare Intl

Wed 10/12

12:50-11:00

2 stops16h 10m

€395

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 7/11

18:55-16:45

2 stops27h 50m

Chicago O'Hare Intl

Sun 9/11

19:20-18:20

1 stop17h 00m

€396

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 22/12

12:55-21:19

1 stop14h 24m

Chicago O'Hare Intl

Thu 15/1

20:45-14:10

1 stop11h 25m

€397

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 27/10

11:30-15:00

Nonstop8h 30m

Chicago O'Hare Intl

Wed 5/11

15:50-05:10

Nonstop7h 20m

€398

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 12/11

11:30-14:00

Nonstop8h 30m

Chicago O'Hare Intl

Wed 19/11

15:50-05:10

Nonstop7h 20m

€399

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 19/12

13:35-23:44

2 stops16h 09m

Chicago O'Hare Intl

Sat 3/1

14:30-10:20

1 stop13h 50m

€409

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 12/12

11:30-20:34

1 stop15h 04m

Chicago O'Hare Intl

Thu 8/1

11:29-08:40

2 stops15h 11m

€411

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 1/3

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Fri 6/3

18:30-10:15

1 stop9h 45m

€418

ShannonChicago

SNN - ORD

SNNORD

Shannon

Thu 6/11

07:50-17:00

1 stop15h 10m

Chicago O'Hare Intl

Wed 12/11

11:48-11:30

2 stops17h 42m

€524

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 Chicago from

How to get the cheapest flight ticket from Ireland to Chicago

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 Chicago?

The cheapest month to fly to Chicago from Ireland is in September. Flight prices, which tend to average around €419, are often lower during this time because this is during the off-season. If you don’t want to visit Chicago in September, then you should wait until January to fly from Ireland, when ticket prices are also cheap, with an average price of €441.

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

On average, the least expensive day to fly to Chicago from Ireland is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as €634. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Chicago on Sunday is €745.

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

In the evening is the cheapest time of day to fly from Ireland to Chicago when you can find flight prices for as low as €523. Flying to Chicago in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at midday when prices are €686 on average. Flights to Chicago from Ireland at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Ireland to Chicago flight route?

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

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

You are more likely to see cheaper flights to Chicago from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around €520 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Ireland for as low as €462 on momondo.

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

There are 3 cabin classes available to choose from on Ireland to Chicago 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 Chicago flights?

You could potentially save up to 24% on your flight if you consider stops on a Ireland to Chicago flight.

Cheap Ireland to Chicago flight deals and tips

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

Best price found

€504

Fastest flight time

8h 00m

Direct flights

Every day

Airports in Chicago

1 airport
The best one-way flight to Chicago from Ireland in the past 72 hours is €504. The best return flight deal from Ireland to Chicago found on momondo in the last 72 hours is €535.
The fastest flight from Ireland to Chicago takes 8h 00m
Direct flights go from Ireland to Chicago every day.
There is 1 airport near Chicago: Chicago O'Hare Intl (ORD)
Search flight deals

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

    Prices for flights from Ireland to Chicago were last updated today.

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

  • How old do you have to be to fly from Ireland to Chicago?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ireland to Chicago.

  • What documentation or ID do you need to fly to Chicago?

    The travel and health documents you'll need for your trip to Chicago may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Chicago. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Ireland to Chicago?

Best airlines flying from Ireland to Chicago

Compare and see reviews for airlines that fly from Ireland to Chicago with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom €355Free CancellationRating
7.0
556 reviews
Search Icelandair flights
United AirlinesPriceFrom €358Free CancellationRating
7.4
8,975 reviews
Search United Airlines flights
Aer LingusPriceFrom €391Free CancellationRating
7.2
1,336 reviews
Search Aer Lingus flights
British AirwaysPriceFrom €402Free CancellationRating
6.7
7,454 reviews
Search British Airways flights
American AirlinesPriceFrom €514Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ireland to Chicago. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Chicago from Ireland which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Ireland to Chicago flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Ireland to Chicago flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Find better results for your trip to the United States

Fly into one of these airports located in Chicago

Airports listed have a maximum distance of 25.6 km from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport