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Cheap flights from Ireland to Chicago from £343

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 8/3. 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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0 bags

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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.
Scandinavian Airlines Logo
10:10 - 16:45
DUB
-
ORD
12h 35m1 stop
Scandinavian Airlines Logo
19:20 - 10:45
ORD
-
DUB
33h 25m2 stops
£353Scandinavian Airlines
Sat, 7 Feb - Wed, 11 Feb
Scandinavian Airlines Logo
12:30 - 16:45
DUB
-
ORD
34h 15m1 stop
Scandinavian Airlines Logo
19:10 - 11:45
ORD
-
DUB
34h 35m1 stop
£357Scandinavian Airlines
Wed, 4 Feb - Sun, 8 Feb
Scandinavian Airlines Logo
11:30 - 16:45
DUB
-
ORD
35h 15m2 stops
Scandinavian Airlines Logo
19:20 - 11:45
ORD
-
DUB
34h 25m2 stops
£357Scandinavian Airlines
Tue, 3 Feb - Sat, 7 Feb
Scandinavian Airlines Logo
12:30 - 16:45
DUB
-
ORD
34h 15m1 stop
Scandinavian Airlines Logo
19:10 - 18:20
ORD
-
DUB
17h 10m1 stop
£358Scandinavian Airlines
Wed, 4 Feb - Sun, 8 Feb
Scandinavian Airlines Logo
12:30 - 16:45
DUB
-
ORD
34h 15m1 stop
Scandinavian Airlines Logo
19:10 - 19:35
ORD
-
DUB
18h 25m2 stops
£362Scandinavian Airlines
Wed, 4 Feb - Sun, 8 Feb
Scandinavian Airlines Logo
12:30 - 16:45
DUB
-
ORD
34h 15m1 stop
Scandinavian Airlines Logo
19:10 - 19:35
ORD
-
DUB
18h 25m2 stops
£363Scandinavian Airlines
Wed, 4 Feb - Sun, 8 Feb
Scandinavian Airlines Logo
19:05 - 16:45
DUB
-
ORD
27h 40m1 stop
Scandinavian Airlines Logo
19:10 - 10:45
ORD
-
DUB
33h 35m2 stops
£363Scandinavian Airlines
Wed, 4 Feb - Sun, 8 Feb
Scandinavian Airlines Logo
10:10 - 16:45
DUB
-
ORD
12h 35m1 stop
Scandinavian Airlines Logo
20:20 - 10:45
ORD
-
DUB
33h 25m2 stops
£367Scandinavian Airlines
Sun, 1 Mar - Wed, 11 Mar
Scandinavian Airlines Logo
11:30 - 16:45
DUB
-
ORD
35h 15m2 stops
Scandinavian Airlines Logo
19:10 - 10:45
ORD
-
DUB
33h 35m2 stops
£369Scandinavian Airlines
Wed, 4 Feb - Sun, 8 Feb
Scandinavian Airlines Logo
19:05 - 16:45
DUB
-
ORD
27h 40m1 stop
Scandinavian Airlines Logo
19:20 - 18:10
ORD
-
DUB
16h 50m2 stops
£370Scandinavian Airlines
Thu, 12 Feb - Thu, 26 Feb

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
1 Apr
DUB19:45Dublin
26h 10m
1 stop
ORD15:55Chicago O'Hare Intl
6 Apr
ORD20:30Chicago O'Hare Intl
15h 35m
1 stop
DUB18:05Dublin
£434
Find similar
British Airways
31 Mar
DUB20:20Dublin
23h 30m
1 stop
ORD13:50Chicago O'Hare Intl
7 Apr
ORD22:35Chicago O'Hare Intl
14h 15m
1 stop
DUB18:50Dublin
£436
Find similar
British Airways
24 Dec
DUB10:20Dublin
14h 25m
1 stop
ORD18:45Chicago O'Hare Intl
31 Dec
ORD17:10Chicago O'Hare Intl
10h 30m
1 stop
DUB09:40Dublin
£507
Find similar

Icelandair flights from Ireland to Chicago O'Hare Intl Airport

Our best Icelandair deals on Ireland to Chicago O'Hare Intl Airport flight tickets
Icelandair
22 Apr
DUB12:15Dublin
12h 00m
1 stop
ORD18:15Chicago O'Hare Intl
26 Apr
ORD19:25Chicago O'Hare Intl
11h 50m
1 stop
DUB13:15Dublin
£409
Find similar
Icelandair
22 Apr
DUB12:15Dublin
12h 00m
1 stop
ORD18:15Chicago O'Hare Intl
26 Apr
ORD22:40Chicago O'Hare Intl
32h 35m
1 stop
DUB13:15Dublin
£412
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 23 December 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

Sat 7/2

10:10-16:45

1 stop12h 35m

Chicago O'Hare Intl

Wed 11/2

19:20-10:45

2 stops33h 25m

£353

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 4/2

12:30-16:45

1 stop34h 15m

Chicago O'Hare Intl

Sun 8/2

19:10-11:45

1 stop34h 35m

£357

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 3/2

11:30-16:45

2 stops35h 15m

Chicago O'Hare Intl

Sat 7/2

19:20-11:45

2 stops34h 25m

£357

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 4/2

12:30-16:45

1 stop34h 15m

Chicago O'Hare Intl

Sun 8/2

19:10-18:20

1 stop17h 10m

£358

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 4/2

12:30-16:45

1 stop34h 15m

Chicago O'Hare Intl

Sun 8/2

19:10-19:35

2 stops18h 25m

£362

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 4/2

12:30-16:45

1 stop34h 15m

Chicago O'Hare Intl

Sun 8/2

19:10-19:35

2 stops18h 25m

£363

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 4/2

19:05-16:45

1 stop27h 40m

Chicago O'Hare Intl

Sun 8/2

19:10-10:45

2 stops33h 35m

£363

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 1/3

10:10-16:45

1 stop12h 35m

Chicago O'Hare Intl

Wed 11/3

20:20-10:45

2 stops33h 25m

£367

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 4/2

11:30-16:45

2 stops35h 15m

Chicago O'Hare Intl

Sun 8/2

19:10-10:45

2 stops33h 35m

£369

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 12/2

19:05-16:45

1 stop27h 40m

Chicago O'Hare Intl

Thu 26/2

19:20-18:10

2 stops16h 50m

£370

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 November. Flight prices, which tend to average around £354, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Chicago O'Hare Intl Airport from Ireland during September instead. Flights to Chicago O'Hare Intl Airport in September, while not as cheap as those in November, still average around £364.

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 Wednesday. Travellers who choose to depart for Chicago O'Hare Intl Airport on a Wednesday will often find tickets for as low as £533. 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 £598.

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 £502. In contrast, the most expensive time of day to depart to Chicago O'Hare Intl Airport is at midday when prices are around £595.

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 £451 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 £404 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 25% 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

£371

Fastest flight time

8h 35m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Ireland in the past 72 hours is £371. The best return flight deal from Ireland to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is £470.
The fastest flight from Ireland to Chicago O'Hare Intl Airport takes 8h 35m
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 £241Free CancellationRating
7.0
592 reviews
Search Icelandair flights
British AirwaysPriceFrom £299Free CancellationRating
6.7
7,605 reviews
Search British Airways flights
FinnairPriceFrom £315Free CancellationRating
7.6
1,339 reviews
Search Finnair flights
Aer LingusPriceFrom £344Free CancellationRating
7.2
1,410 reviews
Search Aer Lingus flights
United AirlinesPriceFrom £354Free CancellationRating
7.4
9,105 reviews
Search United Airlines flights
American AirlinesPriceFrom £453Free CancellationRating
7.2
11,054 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
Schaumburg
Northbrook
Lincolnshire
Lake Geneva
Joliet
Oak Park
Oak Brook
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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