Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Ireland to Chicago from £252

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 20/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
12:30 - 16:45
DUB
-
ORD
34h 15m
1 stop
Scandinavian Airlines Logo
20:20 - 18:20
ORD
-
DUB
17h 00m
1 stop
£359Scandinavian Airlines
Fri, 6 Mar - Mon, 9 Mar
Scandinavian Airlines Logo
19:05 - 16:45
DUB
-
ORD
27h 40m
1 stop
Scandinavian Airlines Logo
19:20 - 18:20
ORD
-
DUB
17h 00m
1 stop
£366Scandinavian Airlines
Thu, 26 Feb - Mon, 2 Mar
Scandinavian Airlines Logo
19:05 - 16:45
DUB
-
ORD
27h 40m
1 stop
Scandinavian Airlines Logo
19:20 - 18:20
ORD
-
DUB
17h 00m
1 stop
£366Scandinavian Airlines
Thu, 26 Feb - Mon, 2 Mar
Scandinavian Airlines Logo
11:15 - 16:45
DUB
-
ORD
35h 30m
2 stops
Scandinavian Airlines Logo
19:20 - 18:20
ORD
-
DUB
17h 00m
1 stop
£369Scandinavian Airlines
Thu, 26 Feb - Mon, 2 Mar
Scandinavian Airlines Logo
11:15 - 16:45
DUB
-
ORD
35h 30m
2 stops
Scandinavian Airlines Logo
19:20 - 18:20
ORD
-
DUB
17h 00m
1 stop
£369Scandinavian Airlines
Thu, 26 Feb - Mon, 2 Mar
Scandinavian Airlines Logo
18:55 - 16:45
DUB
-
ORD
27h 50m
2 stops
Scandinavian Airlines Logo
20:20 - 18:20
ORD
-
DUB
17h 00m
1 stop
£370Scandinavian Airlines
Fri, 6 Mar - Mon, 9 Mar
Icelandair Logo
11:30 - 17:20
DUB
-
ORD
11h 50m
1 stop
Icelandair Logo
18:30 - 10:15
ORD
-
DUB
9h 45m
1 stop
£385Icelandair
Thu, 19 Feb - Mon, 23 Feb
Scandinavian Airlines Logo
11:40 - 16:10
DUB
-
ORD
34h 30m
2 stops
Scandinavian Airlines Logo
06:50 - 11:50
ORD
-
DUB
23h 00m
2 stops
£387Scandinavian Airlines
Thu, 23 Apr - Tue, 28 Apr
Finnair Logo
09:30 - 11:30
DUB
-
ORD
8h 00mdirect
Finnair Logo
22:25 - 11:50
ORD
-
DUB
7h 25mdirect
£389Finnair
Wed, 13 May - Tue, 26 May
Finnair Logo
09:30 - 11:30
DUB
-
ORD
8h 00mdirect
Finnair Logo
22:25 - 11:50
ORD
-
DUB
7h 25mdirect
£390Finnair
Wed, 13 May - Tue, 26 May

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
26 Feb
DUB19:05Dublin
27h 40m
1 stop
ORD16:45Chicago O'Hare Intl
2 Mar
ORD19:20Chicago O'Hare Intl
17h 00m
1 stop
DUB18:20Dublin
£348
Scandinavian Airlines
26 Feb
DUB11:15Dublin
35h 30m
2 stops
ORD16:45Chicago O'Hare Intl
2 Mar
ORD19:20Chicago O'Hare Intl
17h 00m
1 stop
DUB18:20Dublin
£351
Scandinavian Airlines
6 Mar
DUB12:30Dublin
34h 15m
1 stop
ORD16:45Chicago O'Hare Intl
9 Mar
ORD20:20Chicago O'Hare Intl
17h 00m
1 stop
DUB18:20Dublin
£359

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
19 Feb
DUB11:30Dublin
11h 50m
1 stop
ORD17:20Chicago O'Hare Intl
23 Feb
ORD18:30Chicago O'Hare Intl
9h 45m
1 stop
DUB10:15Dublin
£385
Icelandair
25 Mar
DUB11:30Dublin
11h 50m
1 stop
ORD18:20Chicago O'Hare Intl
1 Apr
ORD19:25Chicago O'Hare Intl
11h 50m
1 stop
DUB13:15Dublin
£394
Icelandair
6 Jun
DUB14:15Dublin
10h 00m
1 stop
ORD18:15Chicago O'Hare Intl
22 Jun
ORD19:25Chicago O'Hare Intl
11h 50m
1 stop
DUB13:15Dublin
£403

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 9 February 2026.
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

Fri 6/3

12:30-16:45

1 stop34h 15m

Chicago O'Hare Intl

Mon 9/3

20:20-18:20

1 stop17h 00m

£359

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 26/2

19:05-16:45

1 stop27h 40m

Chicago O'Hare Intl

Mon 2/3

19:20-18:20

1 stop17h 00m

£366

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 26/2

19:05-16:45

1 stop27h 40m

Chicago O'Hare Intl

Mon 2/3

19:20-18:20

1 stop17h 00m

£366

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 26/2

11:15-16:45

2 stops35h 30m

Chicago O'Hare Intl

Mon 2/3

19:20-18:20

1 stop17h 00m

£369

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 26/2

11:15-16:45

2 stops35h 30m

Chicago O'Hare Intl

Mon 2/3

19:20-18:20

1 stop17h 00m

£369

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 6/3

18:55-16:45

2 stops27h 50m

Chicago O'Hare Intl

Mon 9/3

20:20-18:20

1 stop17h 00m

£370

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 19/2

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Mon 23/2

18:30-10:15

1 stop9h 45m

£385

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 23/4

11:40-16:10

2 stops34h 30m

Chicago O'Hare Intl

Tue 28/4

06:50-11:50

2 stops23h 00m

£387

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 13/5

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Tue 26/5

22:25-11:50

Nonstop7h 25m

£389

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 13/5

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Tue 26/5

22:25-11:50

Nonstop7h 25m

£390

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 £350, 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 £353.

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 £528. 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 £594.

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 £494. In contrast, the most expensive time of day to depart to Chicago O'Hare Intl Airport is at midday when prices are around £605.

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 £462 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 £396 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 33% 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

£346

Fastest flight time

8h 30m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Ireland in the past 72 hours is £346. The best return flight deal from Ireland to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is £462.
The fastest flight from Ireland to Chicago O'Hare Intl Airport takes 8h 30m
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 £294Free CancellationRating
7.1
609 reviews
Search Icelandair flights
British AirwaysPriceFrom £319Free CancellationRating
6.7
7,723 reviews
Search British Airways flights
Aer LingusPriceFrom £340Free CancellationRating
7.2
1,447 reviews
Search Aer Lingus flights
United AirlinesPriceFrom £349Free CancellationRating
7.4
9,262 reviews
Search United Airlines flights

Travelling to a place near Chicago?

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

An easier way to manage your Chicago O'Hare Intl Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 11/3
Wed 18/3
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Chicago