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Cheap flights from Ireland to Chicago from £323

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 29/10. 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

Scandinavian Airlines Logo
12:30 - 21:05DUB-ORD
13h 35m1 stop
Scandinavian Airlines Logo
19:20 - 19:35ORD-DUB
18h 15m2 stops
£323Scandinavian Airlines
Find Deal
Wed, 29 Oct - Sun, 2 Nov
Multiple Airlines Logo
11:45 - 20:05DUB-ORD
14h 20m1 stop
Multiple Airlines Logo
18:35 - 08:10ORD-DUB
7h 35mdirect
£325Multiple Airlines
Find Deal
Wed, 5 Nov - Tue, 11 Nov
Scandinavian Airlines Logo
19:05 - 18:45DUB-ORD
28h 40m1 stop
Scandinavian Airlines Logo
19:20 - 11:45ORD-DUB
34h 25m1 stop
£326Scandinavian Airlines
Find Deal
Wed, 29 Oct - Sun, 2 Nov
Lufthansa Logo
05:10 - 20:05DUB-ORD
20h 55m1 stop
Lufthansa Logo
21:50 - 17:10ORD-DUB
13h 20m1 stop
£329Lufthansa
Find Deal
Wed, 5 Nov - Tue, 11 Nov
Lufthansa Logo
05:10 - 16:20DUB-ORD
16h 10m1 stop
Lufthansa Logo
18:35 - 08:10ORD-DUB
7h 35mdirect
£334Lufthansa
Find Deal
Sun, 2 Nov - Sun, 9 Nov
Delta Logo
05:55 - 15:20DUB-ORD
14h 25m1 stop
Delta Logo
16:15 - 15:45ORD-DUB
17h 30m2 stops
£340Delta
Find Deal
Fri, 31 Oct - Tue, 4 Nov
Delta Logo
05:55 - 14:40DUB-ORD
14h 45m1 stop
Delta Logo
10:36 - 08:15ORD-DUB
15h 39m2 stops
£341Delta
Find Deal
Mon, 13 Oct - Tue, 21 Oct
United Airlines Logo
09:20 - 15:00DUB-ORD
35h 40m1 stop
United Airlines Logo
20:20 - 09:45ORD-DUB
7h 25mdirect
£342United Airlines
Find Deal
Wed, 8 Oct - Mon, 13 Oct
United Airlines Logo
09:00 - 15:10DUB-ORD
12h 10m1 stop
United Airlines Logo
18:35 - 08:10ORD-DUB
7h 35mdirect
£343United Airlines
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Mon, 3 Nov - Sun, 9 Nov
British Airways Logo
20:40 - 13:50DUB-ORD
23h 10m1 stop
British Airways Logo
20:40 - 14:20ORD-DUB
11h 40m1 stop
£368British Airways
Find Deal
Sun, 2 Nov - Sun, 9 Nov

Lufthansa flights from Ireland to Chicago O'Hare Intl Airport

Our best Lufthansa deals on Ireland to Chicago O'Hare Intl Airport flight tickets
Lufthansa
5 Nov
DUB05:10Dublin
20h 55m
1 stop
ORD20:05Chicago O'Hare Intl
11 Nov
ORD21:50Chicago O'Hare Intl
13h 20m
1 stop
DUB17:10Dublin
£329
Find similar
Lufthansa
2 Nov
DUB05:10Dublin
16h 10m
1 stop
ORD16:20Chicago O'Hare Intl
9 Nov
ORD18:35Chicago O'Hare Intl
7h 35m
DUB08:10Dublin
£334
Find similar
Lufthansa
13 Oct
DUB05:55Dublin
15h 00m
1 stop
ORD14:55Chicago O'Hare Intl
21 Oct
ORD20:20Chicago O'Hare Intl
7h 25m
DUB09:45Dublin
£337
Find similar

Delta flights from Ireland to Chicago O'Hare Intl Airport

Our best Delta deals on Ireland to Chicago O'Hare Intl Airport flight tickets
Delta
31 Oct
DUB05:55Dublin
14h 25m
1 stop
ORD15:20Chicago O'Hare Intl
4 Nov
ORD16:15Chicago O'Hare Intl
17h 30m
2 stops
DUB15:45Dublin
£340
Find similar
Delta
13 Oct
DUB05:55Dublin
14h 45m
1 stop
ORD14:40Chicago O'Hare Intl
21 Oct
ORD10:36Chicago O'Hare Intl
15h 39m
2 stops
DUB08:15Dublin
£341
Find similar
Delta
31 Oct
DUB05:55Dublin
17h 12m
2 stops
ORD18:07Chicago O'Hare Intl
7 Nov
ORD17:20Chicago O'Hare Intl
16h 25m
1 stop
DUB15:45Dublin
£342
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Ireland to Chicago O'Hare Intl Airport 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 17 September 2025.
Use the filters below to find and compare flights from Ireland to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 29/10

12:30-21:05

1 stop13h 35m

Chicago O'Hare Intl

Sun 2/11

19:20-19:35

2 stops18h 15m

£323

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 5/11

11:45-20:05

1 stop14h 20m

Chicago O'Hare Intl

Tue 11/11

18:35-08:10

Nonstop7h 35m

£325

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 29/10

19:05-18:45

1 stop28h 40m

Chicago O'Hare Intl

Sun 2/11

19:20-11:45

1 stop34h 25m

£326

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 5/11

05:10-20:05

1 stop20h 55m

Chicago O'Hare Intl

Tue 11/11

21:50-17:10

1 stop13h 20m

£329

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 2/11

05:10-16:20

1 stop16h 10m

Chicago O'Hare Intl

Sun 9/11

18:35-08:10

Nonstop7h 35m

£334

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 31/10

05:55-15:20

1 stop14h 25m

Chicago O'Hare Intl

Tue 4/11

16:15-15:45

2 stops17h 30m

£340

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 13/10

05:55-14:40

1 stop14h 45m

Chicago O'Hare Intl

Tue 21/10

10:36-08:15

2 stops15h 39m

£341

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 8/10

09:20-15:00

1 stop35h 40m

Chicago O'Hare Intl

Mon 13/10

20:20-09:45

Nonstop7h 25m

£342

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 3/11

09:00-15:10

1 stop12h 10m

Chicago O'Hare Intl

Sun 9/11

18:35-08:10

Nonstop7h 35m

£343

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 2/11

20:40-13:50

1 stop23h 10m

Chicago O'Hare Intl

Sun 9/11

20:40-14:20

1 stop11h 40m

£368

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 O'Hare Intl Airport

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 O'Hare Intl Airport?

The cheapest month to fly to Chicago O'Hare Intl Airport from Ireland is in September. Flight prices, which tend to average around £370, 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 O'Hare Intl Airport from Ireland during February instead. Flights to Chicago O'Hare Intl Airport in February, while not as cheap as those in September, still average around £370.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart from Ireland to Chicago O'Hare Intl Airport is on a Tuesday. Travellers who choose to depart for Chicago O'Hare Intl Airport on a Tuesday will often find tickets for as low as £536. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Chicago O'Hare Intl Airport on Monday is £591.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest time of day to fly to Chicago O'Hare Intl Airport is in the afternoon when flights can be purchased for as low as £534. In contrast, the most expensive time of day to depart to Chicago O'Hare Intl Airport is at midday when prices are around £583.

What is the cheapest Ireland to Chicago O'Hare Intl flight route?

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

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around £444 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Ireland for as low as £392 on momondo.

What cabin class options are available on Ireland to Chicago O'Hare Intl flights?

There are 3 cabin classes available to choose from on Ireland to Chicago O'Hare Intl 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 O'Hare Intl Airport flights?

You could potentially save up to 43% on your flight if you consider stops on a Ireland to Chicago O'Hare Intl Airport flight.

Cheap Ireland to Chicago O'Hare Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to Chicago O'Hare Intl Airport

Best price found

£500

Fastest flight time

8h 00m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun
The best one-way flight to Chicago O'Hare Intl Airport from Ireland in the past 72 hours is £500. The best return flight deal from Ireland to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is £465.
The fastest flight from Ireland to Chicago O'Hare Intl Airport takes 8h 00m
Direct flights go from Ireland to Chicago O'Hare Intl Airport on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights..
Search flight deals

  • When did momondo last update prices for flights from Ireland to Chicago O'Hare Intl Airport?

    Prices for flights from Ireland to Chicago O'Hare Intl Airport are updated daily.

  • How many operators does momondo search for flights from Ireland to Chicago O'Hare Intl Airport?

  • How old do you have to be to fly from Ireland to Chicago O'Hare Intl Airport?

    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 O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The required travel and health documents for your Chicago O'Hare Intl Airport 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 license and a passport valid for six months after your intended arrival at Chicago O'Hare Intl Airport. 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 Ireland to Chicago O'Hare Intl Airport?

Best airlines flying from Ireland to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Ireland to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom £293Free CancellationRating
7.0
544 reviews
Search Icelandair flights
British AirwaysPriceFrom £294Free CancellationRating
6.7
7,363 reviews
Search British Airways flights
FinnairPriceFrom £310Free CancellationRating
7.6
1,324 reviews
Search Finnair flights
Aer LingusPriceFrom £338Free CancellationRating
7.2
1,274 reviews
Search Aer Lingus flights
United AirlinesPriceFrom £341Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights
American AirlinesPriceFrom £446Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Travelling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Racine
Evanston
Northbrook
Schaumburg
Lincolnshire
Glenview
Lake Geneva
Oak Brook
Joliet
Oak Park
Elgin
Rosemont

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?

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?

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?

Price alerts on flights to Chicago from Ireland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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