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Cheap flights from Ireland to Chicago from £342

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to Chicago departing on 5/12. 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.
Icelandair Logo
11:30 - 17:20DUB-ORD
11h 50m1 stop
Icelandair Logo
18:30 - 10:15ORD-DUB
9h 45m1 stop
£342Icelandair
Find Deal
Fri, 5 Dec - Tue, 16 Dec
Lufthansa Logo
09:10 - 20:05DUB-ORD
16h 55m1 stop
Lufthansa Logo
18:35 - 08:10ORD-DUB
7h 35mdirect
£343Lufthansa
Find Deal
Wed, 10 Dec - Fri, 30 Jan
Multiple Airlines Logo
08:50 - 15:25DUB-ORD
12h 35m1 stop
Multiple Airlines Logo
21:45 - 14:20ORD-DUB
10h 35m1 stop
£344Multiple Airlines
Find Deal
Fri, 13 Feb - Fri, 20 Feb
Scandinavian Airlines Logo
18:55 - 16:45DUB-ORD
27h 50m2 stops
Scandinavian Airlines Logo
19:20 - 19:35ORD-DUB
18h 15m2 stops
£351Scandinavian Airlines
Find Deal
Fri, 5 Dec - Sun, 7 Dec
United Airlines Logo
09:00 - 17:48DUB-ORD
14h 48m1 stop
United Airlines Logo
18:35 - 08:10ORD-DUB
7h 35mdirect
£353United Airlines
Find Deal
Mon, 8 Dec - Thu, 5 Feb
United Airlines Logo
09:00 - 15:10DUB-ORD
12h 10m1 stop
United Airlines Logo
13:00 - 07:30ORD-DUB
12h 30m1 stop
£356United Airlines
Find Deal
Mon, 8 Dec - Sat, 31 Jan
Scandinavian Airlines Logo
19:05 - 16:45DUB-ORD
27h 40m1 stop
Scandinavian Airlines Logo
19:20 - 18:20ORD-DUB
17h 00m1 stop
£357Scandinavian Airlines
Find Deal
Tue, 9 Dec - Wed, 28 Jan
British Airways Logo
20:40 - 13:50DUB-ORD
23h 10m1 stop
British Airways Logo
16:14 - 12:15ORD-DUB
14h 01m2 stops
£360British Airways
Find Deal
Thu, 11 Dec - Sun, 1 Feb
British Airways Logo
08:50 - 20:34DUB-ORD
17h 44m2 stops
British Airways Logo
20:45 - 14:05ORD-DUB
11h 20m1 stop
£365British Airways
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Fri, 12 Dec - Wed, 4 Feb
Aer Lingus Logo
11:30 - 14:00DUB-ORD
8h 30mdirect
Aer Lingus Logo
15:50 - 05:10ORD-DUB
7h 20mdirect
£401Aer Lingus
Find Deal
Wed, 10 Dec - Sun, 14 Dec

Icelandair flights from Ireland to Chicago

Our best Icelandair deals on Ireland to Chicago flight tickets
Icelandair
5 Dec
DUB11:30Dublin
11h 50m
1 stop
ORD17:20Chicago O'Hare Intl
16 Dec
ORD18:30Chicago O'Hare Intl
9h 45m
1 stop
DUB10:15Dublin
£342
Find similar
Icelandair
24 Nov
DUB11:30Dublin
11h 50m
1 stop
ORD17:20Chicago O'Hare Intl
29 Nov
ORD18:30Chicago O'Hare Intl
9h 45m
1 stop
DUB10:15Dublin
£368
Find similar
Icelandair
6 Nov
DUB11:30Dublin
11h 50m
1 stop
ORD17:20Chicago O'Hare Intl
24 Nov
ORD18:30Chicago O'Hare Intl
9h 45m
1 stop
DUB10:15Dublin
£376
Find similar

Lufthansa flights from Ireland to Chicago

Our best Lufthansa deals on Ireland to Chicago flight tickets
Lufthansa
10 Dec
DUB09:10Dublin
16h 55m
1 stop
ORD20:05Chicago O'Hare Intl
30 Jan
ORD18:35Chicago O'Hare Intl
7h 35m
DUB08:10Dublin
£343
Find similar
Lufthansa
24 Dec
DUB10:40Dublin
8h 50m
ORD13:30Chicago O'Hare Intl
10 Jan
ORD18:35Chicago O'Hare Intl
7h 35m
DUB08:10Dublin
£348
Find similar
Lufthansa
10 Dec
DUB11:45Dublin
14h 20m
1 stop
ORD20:05Chicago O'Hare Intl
31 Jan
ORD16:20Chicago O'Hare Intl
12h 55m
1 stop
DUB11:15Dublin
£349
Find similar

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 279,928 searches. Data last updated 31 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

Fri 5/12

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Tue 16/12

18:30-10:15

1 stop9h 45m

£342

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 10/12

09:10-20:05

1 stop16h 55m

Chicago O'Hare Intl

Fri 30/1

18:35-08:10

Nonstop7h 35m

£343

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 13/2

08:50-15:25

1 stop12h 35m

Chicago O'Hare Intl

Fri 20/2

21:45-14:20

1 stop10h 35m

£344

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 5/12

18:55-16:45

2 stops27h 50m

Chicago O'Hare Intl

Sun 7/12

19:20-19:35

2 stops18h 15m

£351

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 8/12

09:00-17:48

1 stop14h 48m

Chicago O'Hare Intl

Thu 5/2

18:35-08:10

Nonstop7h 35m

£353

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 8/12

09:00-15:10

1 stop12h 10m

Chicago O'Hare Intl

Sat 31/1

13:00-07:30

1 stop12h 30m

£356

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 9/12

19:05-16:45

1 stop27h 40m

Chicago O'Hare Intl

Wed 28/1

19:20-18:20

1 stop17h 00m

£357

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 11/12

20:40-13:50

1 stop23h 10m

Chicago O'Hare Intl

Sun 1/2

16:14-12:15

2 stops14h 01m

£360

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 12/12

08:50-20:34

2 stops17h 44m

Chicago O'Hare Intl

Wed 4/2

20:45-14:05

1 stop11h 20m

£365

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 10/12

11:30-14:00

Nonstop8h 30m

Chicago O'Hare Intl

Sun 14/12

15:50-05:10

Nonstop7h 20m

£401

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 £369, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of September, then book flights to Chicago from Ireland during January instead. Flights to Chicago in January, while not as cheap as those in September, still average around £388.

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

The cheapest day to depart on your flight to Chicago is on a Wednesday when prices can be found for as low as £550. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Chicago is Friday, with ticket prices averaging around £601.

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

Flying to Chicago from Ireland in the evening is the least expensive time of day to depart. momondo users have found prices as low as £490 when looking at flights departing in the evening. Flights at midday are often more expensive, with an average ticket price of £609.

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 £457 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 £406 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 33% 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

£436

Fastest flight time

8h 05m

Direct flights

Every day

Airports in Chicago

1 airport
The best one-way flight to Chicago from Ireland in the past 72 hours is £436. The best return flight deal from Ireland to Chicago found on momondo in the last 72 hours is £424.
The fastest flight from Ireland to Chicago takes 8h 05m
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 are refreshed on a daily basis.

  • 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?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ireland to Chicago.

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

    The necessary travel and health documents for your Chicago trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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 £245Free CancellationRating
7.1
562 reviews
Search Icelandair flights
British AirwaysPriceFrom £305Free CancellationRating
6.7
7,489 reviews
Search British Airways flights
FinnairPriceFrom £321Free CancellationRating
7.6
1,333 reviews
Search Finnair flights
Aer LingusPriceFrom £349Free CancellationRating
7.2
1,365 reviews
Search Aer Lingus flights
United AirlinesPriceFrom £361Free CancellationRating
7.4
8,995 reviews
Search United Airlines flights
American AirlinesPriceFrom £462Free CancellationRating
7.2
11,033 reviews
Search American Airlines flights

Why use momondo?

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

Finding the right flight to Chicago from Ireland 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 Chicago quick and easy, saving you time and money.

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

Flights from Ireland to Chicago 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 Chicago?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ireland to Chicago.

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

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

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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 78.5 mi from Chicago
Chicago Midway Airport
Chicago O'Hare Intl Airport
Chicago Greater Rockford Airport