Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Ireland to Chicago from €239

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 13/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Voted the 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.
American Airlines Logo
11:30 - 17:44DUB-ORD
12h 14m1 stop
American Airlines Logo
18:25 - 14:20ORD-DUB
13h 55m1 stop
€392American Airlines
Find Deal
Sun, 16 Nov - Fri, 28 Nov
Delta Logo
08:50 - 14:20DUB-ORD
11h 30m1 stop
Delta Logo
07:30 - 07:50ORD-DUB
18h 20m2 stops
€392Delta
Find Deal
Wed, 24 Dec - Sat, 10 Jan
Multiple Airlines Logo
11:55 - 21:05DUB-ORD
14h 10m1 stop
Multiple Airlines Logo
20:15 - 07:10ORD-DUB
28h 55m1 stop
€394Multiple Airlines
Find Deal
Fri, 31 Oct - Sat, 8 Nov
Multiple Airlines Logo
05:10 - 20:05DUB-ORD
20h 55m1 stop
Multiple Airlines Logo
20:15 - 07:10ORD-DUB
28h 55m1 stop
€396Multiple Airlines
Find Deal
Sun, 7 Dec - Mon, 22 Dec
United Airlines Logo
09:00 - 17:48DUB-ORD
14h 48m1 stop
United Airlines Logo
18:35 - 08:10ORD-DUB
7h 35mdirect
€397United Airlines
Find Deal
Wed, 10 Dec - Sat, 10 Jan
Aer Lingus Logo
15:20 - 17:55DUB-ORD
8h 35mdirect
Aer Lingus Logo
15:50 - 05:10ORD-DUB
7h 20mdirect
€398Aer Lingus
Find Deal
Tue, 4 Nov - Tue, 16 Dec
United Airlines Logo
09:00 - 17:48DUB-ORD
14h 48m1 stop
United Airlines Logo
13:00 - 10:20ORD-DUB
15h 20m1 stop
€398United Airlines
Find Deal
Sun, 16 Nov - Sun, 23 Nov
Aer Lingus Logo
11:30 - 14:00DUB-ORD
8h 30mdirect
Aer Lingus Logo
19:40 - 09:00ORD-DUB
7h 20mdirect
€401Aer Lingus
Find Deal
Thu, 11 Dec - Fri, 26 Dec
British Airways Logo
20:40 - 13:50DUB-ORD
23h 10m1 stop
British Airways Logo
17:40 - 15:25ORD-DUB
15h 45m2 stops
€407British Airways
Find Deal
Tue, 11 Nov - Mon, 24 Nov
British Airways Logo
10:20 - 20:50DUB-ORD
16h 30m2 stops
British Airways Logo
17:40 - 15:25ORD-DUB
15h 45m2 stops
€412British Airways
Find Deal
Wed, 12 Nov - Mon, 24 Nov

Aer Lingus flights from Ireland to Chicago O'Hare Intl Airport

Our best Aer Lingus deals on Ireland to Chicago O'Hare Intl Airport flight tickets
Aer Lingus
4 Nov
DUB15:20Dublin
8h 35m
ORD17:55Chicago O'Hare Intl
16 Dec
ORD15:50Chicago O'Hare Intl
7h 20m
DUB05:10Dublin
€398
Find similar
Aer Lingus
11 Dec
DUB11:30Dublin
8h 30m
ORD14:00Chicago O'Hare Intl
26 Dec
ORD19:40Chicago O'Hare Intl
7h 20m
DUB09:00Dublin
€401
Find similar
Aer Lingus
25 Oct
DUB11:35Dublin
8h 25m
ORD14:00Chicago O'Hare Intl
7 Nov
ORD19:40Chicago O'Hare Intl
7h 20m
DUB09:00Dublin
€405
Find similar

Air Canada flights from Ireland to Chicago O'Hare Intl Airport

Our best Air Canada deals on Ireland to Chicago O'Hare Intl Airport flight tickets
Air Canada
24 Oct
DUB09:20Dublin
16h 44m
1 stop
ORD20:04Chicago O'Hare Intl
9 Nov
ORD07:05Chicago O'Hare Intl
18h 05m
2 stops
DUB07:10Dublin
€401
Find similar
Air Canada
14 Nov
DUB09:00Dublin
12h 10m
1 stop
ORD15:10Chicago O'Hare Intl
22 Nov
ORD07:20Chicago O'Hare Intl
17h 50m
2 stops
DUB07:10Dublin
€404
Find similar
Air Canada
16 Nov
DUB09:00Dublin
35h 55m
2 stops
ORD14:55Chicago O'Hare Intl
23 Nov
ORD17:55Chicago O'Hare Intl
55h 15m
2 stops
DUB07:10Dublin
€405
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 13,528 searches. Data last updated 17 October 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

Sun 16/11

11:30-17:44

1 stop12h 14m

Chicago O'Hare Intl

Fri 28/11

18:25-14:20

1 stop13h 55m

€392

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 24/12

08:50-14:20

1 stop11h 30m

Chicago O'Hare Intl

Sat 10/1

07:30-07:50

2 stops18h 20m

€392

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 31/10

11:55-21:05

1 stop14h 10m

Chicago O'Hare Intl

Sat 8/11

20:15-07:10

1 stop28h 55m

€394

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 7/12

05:10-20:05

1 stop20h 55m

Chicago O'Hare Intl

Mon 22/12

20:15-07:10

1 stop28h 55m

€396

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 10/12

09:00-17:48

1 stop14h 48m

Chicago O'Hare Intl

Sat 10/1

18:35-08:10

Nonstop7h 35m

€397

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 4/11

15:20-17:55

Nonstop8h 35m

Chicago O'Hare Intl

Tue 16/12

15:50-05:10

Nonstop7h 20m

€398

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 16/11

09:00-17:48

1 stop14h 48m

Chicago O'Hare Intl

Sun 23/11

13:00-10:20

1 stop15h 20m

€398

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 11/12

11:30-14:00

Nonstop8h 30m

Chicago O'Hare Intl

Fri 26/12

19:40-09:00

Nonstop7h 20m

€401

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 11/11

20:40-13:50

1 stop23h 10m

Chicago O'Hare Intl

Mon 24/11

17:40-15:25

2 stops15h 45m

€407

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 12/11

10:20-20:50

2 stops16h 30m

Chicago O'Hare Intl

Mon 24/11

17:40-15:25

2 stops15h 45m

€412

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?

In general, September is the cheapest month to fly from Ireland to Chicago O'Hare Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around €419. If you are unable to visit Chicago O'Hare Intl Airport during the month of September, then departing from Ireland during the month February is also very affordable. Most momondo users find prices during this month for around €433.

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

On average, the least expensive day to fly to Chicago O'Hare Intl Airport from Ireland is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as €629. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Chicago O'Hare Intl Airport is Sunday, with ticket prices averaging around €740.

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

Our data shows that the cheapest Ireland to Chicago O'Hare Intl Airport flights are usually those with departure times in the evening. Our users have found flights to Chicago O'Hare Intl Airport in the evening for as low as €519. Flights to Chicago O'Hare Intl Airport are more costly at midday, with an average ticket price of €680. Departure times at midday fall within the peak daily travel times, which is why tickets can be more expensive.

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 €517 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 €458 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 24% 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 05m

Direct flights

Every day
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 €531.
The fastest flight from Ireland to Chicago O'Hare Intl Airport takes 8h 05m
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 refresh 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?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check 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 necessary travel and health documents for your Chicago O'Hare Intl Airport 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 licence 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 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 €353Free CancellationRating
7.0
556 reviews
Search Icelandair flights
United AirlinesPriceFrom €356Free CancellationRating
7.4
8,984 reviews
Search United Airlines flights
Aer LingusPriceFrom €389Free CancellationRating
7.2
1,343 reviews
Search Aer Lingus flights
British AirwaysPriceFrom €400Free CancellationRating
6.7
7,459 reviews
Search British Airways flights
American AirlinesPriceFrom €510Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights

Travelling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Rosemont
Oakbrook Terrace
Elk Grove Village
Crystal Lake

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ireland to Chicago . Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to Chicago from Ireland on momondo can be compared and filtered by various policies on offer, including flexible booking.

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 not ready to book a flight from Ireland to Chicago now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Chicago and let you know when they change.

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
Sun 16/11
Sun 23/11
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Chicago