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Cheap flights from Ireland to Chicago from £237

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 4/11. 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

Icelandair Logo
12:15 - 21:15DUB-ORD
15h 00m1 stop
Icelandair Logo
19:25 - 13:15ORD-DUB
11h 50m1 stop
£281Icelandair
Find Deal
Wed, 10 Sep - Wed, 1 Oct
Icelandair Logo
11:30 - 17:20DUB-ORD
11h 50m1 stop
Icelandair Logo
18:30 - 10:15ORD-DUB
9h 45m1 stop
£281Icelandair
Find Deal
Mon, 10 Nov - Sun, 23 Nov
Icelandair Logo
12:15 - 21:15DUB-ORD
15h 00m1 stop
Icelandair Logo
19:25 - 13:15ORD-DUB
11h 50m1 stop
£284Icelandair
Find Deal
Wed, 10 Sep - Wed, 1 Oct
Scandinavian Airlines Logo
10:45 - 17:45DUB-ORD
36h 00m2 stops
Scandinavian Airlines Logo
19:20 - 11:45ORD-DUB
34h 25m1 stop
£293Scandinavian Airlines
Find Deal
Fri, 31 Oct - Mon, 3 Nov
Scandinavian Airlines Logo
12:30 - 17:45DUB-ORD
34h 15m1 stop
Scandinavian Airlines Logo
19:20 - 11:45ORD-DUB
34h 25m1 stop
£304Scandinavian Airlines
Find Deal
Fri, 31 Oct - Mon, 3 Nov
British Airways Logo
12:45 - 18:15DUB-ORD
11h 30m1 stop
British Airways Logo
19:15 - 11:55ORD-DUB
10h 40m1 stop
£338British Airways
Find Deal
Thu, 16 Oct - Sun, 19 Oct
Aer Lingus Logo
16:40 - 19:00DUB-ORD
8h 20mdirect
Aer Lingus Logo
15:45 - 05:10ORD-DUB
7h 25mdirect
£343Aer Lingus
Find Deal
Sat, 20 Sep - Sat, 4 Oct
Delta Logo
08:55 - 14:40DUB-ORD
11h 45m1 stop
Delta Logo
17:00 - 15:00ORD-DUB
16h 00m2 stops
£346Delta
Find Deal
Mon, 1 Sep - Mon, 8 Sep
Delta Logo
08:45 - 16:10DUB-ORD
12h 25m1 stop
Delta Logo
10:40 - 07:50ORD-DUB
15h 10m2 stops
£346Delta
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Thu, 30 Oct - Wed, 12 Nov
British Airways Logo
08:35 - 18:15DUB-ORD
15h 40m1 stop
British Airways Logo
22:35 - 07:40ORD-DUB
27h 05m1 stop
£348British Airways
Find Deal
Fri, 3 Oct - Thu, 9 Oct

Scandinavian Airlines flights from Ireland to Chicago O'Hare Intl Airport

Our best Scandinavian Airlines deals on Ireland to Chicago O'Hare Intl Airport flight tickets
Scandinavian Airlines
31 Oct
DUB10:45Dublin
36h 00m
2 stops
ORD17:45Chicago O'Hare Intl
3 Nov
ORD19:20Chicago O'Hare Intl
34h 25m
1 stop
DUB11:45Dublin
£293
Find similar
Scandinavian Airlines
31 Oct
DUB12:30Dublin
34h 15m
1 stop
ORD17:45Chicago O'Hare Intl
3 Nov
ORD19:20Chicago O'Hare Intl
34h 25m
1 stop
DUB11:45Dublin
£304
Find similar
Scandinavian Airlines
29 Oct
DUB19:05Dublin
28h 40m
1 stop
ORD18:45Chicago O'Hare Intl
3 Nov
ORD19:20Chicago O'Hare Intl
34h 25m
1 stop
DUB11:45Dublin
£306
Find similar

British Airways flights from Ireland to Chicago O'Hare Intl Airport

Our best British Airways deals on Ireland to Chicago O'Hare Intl Airport flight tickets
British Airways
16 Oct
DUB12:45Dublin
11h 30m
1 stop
ORD18:15Chicago O'Hare Intl
19 Oct
ORD19:15Chicago O'Hare Intl
10h 40m
1 stop
DUB11:55Dublin
£338
Find similar
British Airways
3 Oct
DUB08:35Dublin
15h 40m
1 stop
ORD18:15Chicago O'Hare Intl
9 Oct
ORD22:35Chicago O'Hare Intl
27h 05m
1 stop
DUB07:40Dublin
£348
Find similar
British Airways
13 Sept
DUB08:35Dublin
13h 20m
1 stop
ORD15:55Chicago O'Hare Intl
26 Sept
ORD22:35Chicago O'Hare Intl
14h 45m
1 stop
DUB19:20Dublin
£350
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 2 August 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 10/9

12:15-21:15

1 stop15h 00m

Chicago O'Hare Intl

Wed 1/10

19:25-13:15

1 stop11h 50m

£281

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 10/11

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Sun 23/11

18:30-10:15

1 stop9h 45m

£281

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 10/9

12:15-21:15

1 stop15h 00m

Chicago O'Hare Intl

Wed 1/10

19:25-13:15

1 stop11h 50m

£284

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 31/10

10:45-17:45

2 stops36h 00m

Chicago O'Hare Intl

Mon 3/11

19:20-11:45

1 stop34h 25m

£293

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 31/10

12:30-17:45

1 stop34h 15m

Chicago O'Hare Intl

Mon 3/11

19:20-11:45

1 stop34h 25m

£304

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 16/10

12:45-18:15

1 stop11h 30m

Chicago O'Hare Intl

Sun 19/10

19:15-11:55

1 stop10h 40m

£338

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 20/9

16:40-19:00

Nonstop8h 20m

Chicago O'Hare Intl

Sat 4/10

15:45-05:10

Nonstop7h 25m

£343

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 1/9

08:55-14:40

1 stop11h 45m

Chicago O'Hare Intl

Mon 8/9

17:00-15:00

2 stops16h 00m

£346

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 30/10

08:45-16:10

1 stop12h 25m

Chicago O'Hare Intl

Wed 12/11

10:40-07:50

2 stops15h 10m

£346

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 3/10

08:35-18:15

1 stop15h 40m

Chicago O'Hare Intl

Thu 9/10

22:35-07:40

1 stop27h 05m

£348

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 February. Flight prices, which tend to average around £381, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Chicago O'Hare Intl Airport from Ireland during November instead. Flights to Chicago O'Hare Intl Airport in November, while not as cheap as those in February, still average around £391.

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 £538. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Chicago O'Hare Intl Airport on Saturday is £610.

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 £565. In contrast, the most expensive time of day to depart to Chicago O'Hare Intl Airport is at midday when prices are around £604.

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 £454 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 £390 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 37% 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

£237

Fastest flight time

8h 00m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Ireland in the past 72 hours is £237. The best return flight deal from Ireland to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is £281.
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 every day.
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 £262Free CancellationRating
7.0
520 reviews
Search Icelandair flights
British AirwaysPriceFrom £293Free CancellationRating
6.6
7,224 reviews
Search British Airways flights
United AirlinesPriceFrom £296Free CancellationRating
7.4
8,904 reviews
Search United Airlines flights
Aer LingusPriceFrom £312Free CancellationRating
7.1
1,193 reviews
Search Aer Lingus flights
FinnairPriceFrom £373Free CancellationRating
7.6
1,317 reviews
Search Finnair flights
IberiaPriceFrom £382Free CancellationRating
7.0
2,862 reviews
Search Iberia flights
American AirlinesPriceFrom £496Free 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
Evanston
Northbrook
Schaumburg
Lake Geneva
Lincolnshire
Glenview
Joliet
Oak Brook
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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