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Cheap flights from Ireland to Chicago from £330
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/1. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — CHI
29 Nov — 6 Dec1
Find flight deals from Ireland to Chicago
Cheapest flights from Ireland to ChicagoExplore the most affordable flight options available from Ireland to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2025.
Explore the most affordable flight options available from Ireland to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2025.
Fri 5/1211:30DUB - ORD
1 stop11h 50mIcelandair
Tue 16/1218:30ORD - DUB
1 stop9h 45mIcelandair
Deal found 28/10£341
Wed 10/1209:10DUB - ORD
1 stop16h 55mLufthansa
Fri 30/118:35ORD - DUB
Nonstop7h 35mLufthansa
Deal found 28/10£342
Wed 24/1210:40DUB - ORD
Nonstop8h 50mMultiple Airlines
Sat 10/118:35ORD - DUB
Nonstop7h 35mMultiple Airlines
Deal found 28/10£344
Fri 7/1105:55DUB - ORD
1 stop14h 25mDelta
Sat 15/1110:35ORD - DUB
2 stops15h 25mDelta
Deal found 28/10£346
Wed 24/1210:40DUB - ORD
Nonstop8h 50mLufthansa
Sat 10/118:35ORD - DUB
Nonstop7h 35mLufthansa
Deal found 28/10£347
Wed 10/1211:45DUB - ORD
1 stop14h 20mLufthansa
Sat 31/116:20ORD - DUB
1 stop12h 55mLufthansa
Deal found 28/10£348
Fri 7/1108:50DUB - ORD
1 stop11h 30mDelta
Thu 13/1111:19ORD - DUB
2 stops14h 41mDelta
Deal found 28/10£349
Thu 11/1208:50DUB - ORD
2 stops17h 45mDelta
Mon 2/207:01ORD - DUB
2 stops18h 49mDelta
Deal found 28/10£350
Wed 10/1205:55DUB - MDW
2 stops18h 23mDelta
Sun 1/218:35MDW - DUB
2 stops15h 10mDelta
Deal found 28/10£350
Thu 6/1108:45DUB - ORD
1 stop12h 25mDelta
Fri 14/1110:35ORD - DUB
2 stops15h 25mDelta
Deal found 28/10£351
Mon 8/1209:00DUB - ORD
1 stop12h 10mUnited Airlines
Mon 15/1215:35ORD - DUB
1 stop12h 20mUnited Airlines
Deal found 28/10£352
Sat 8/1105:55DUB - ORD
2 stops18h 12mDelta
Sat 22/1115:56ORD - DUB
1 stop9h 49mDelta
Deal found 28/10£352
Cheap flight deals from Ireland to Chicago
Keep the following information in mind while searching for Ireland to Chicago flight deals. Data was last updated 30 October 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Ireland to Chicago 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, Cheapflights users made 858,174 searches. Data last updated 30 October 2025.
Use the filters below to find and compare flights from Ireland to Chicago that are best for you.
Fly from
Ireland
Fly to
Chicago
Route
Depart
Return
Price
DublinChicago
DUB - ORD
DUBORD
Dublin
Sat 6/12
11:30-17:20
1 stop11h 50m
Chicago O'Hare Intl
Sun 14/12
18:30-10:15
1 stop9h 45m
£341
DublinChicago
DUB - ORD
DUBORD
Dublin
Thu 11/12
11:30-17:20
1 stop11h 50m
Chicago O'Hare Intl
Wed 17/12
18:30-10:15
1 stop9h 45m
£341
DublinChicago
DUB - ORD
DUBORD
Dublin
Fri 5/12
11:30-17:20
1 stop11h 50m
Chicago O'Hare Intl
Tue 16/12
18:30-10:15
1 stop9h 45m
£341
DublinChicago
DUB - ORD
DUBORD
Dublin
Wed 24/12
05:55-14:20
1 stop14h 25m
Chicago O'Hare Intl
Sat 10/1
07:00-08:05
2 stops19h 05m
£350
DublinChicago
DUB - ORD
DUBORD
Dublin
Thu 11/12
08:50-20:35
2 stops17h 45m
Chicago O'Hare Intl
Mon 2/2
07:01-07:50
2 stops18h 49m
£350
DublinChicago
DUB - MDW
DUBMDW
Dublin
Wed 10/12
05:55-18:18
2 stops18h 23m
Chicago Midway
Sun 1/2
18:35-15:45
2 stops15h 10m
£350
DublinChicago
DUB - ORD
DUBORD
Dublin
Fri 13/2
09:00-15:10
1 stop12h 10m
Chicago O'Hare Intl
Fri 20/2
18:35-08:10
Nonstop7h 35m
£352
DublinChicago
DUB - MDW
DUBMDW
Dublin
Wed 10/12
05:55-18:18
2 stops18h 23m
Chicago Midway
Fri 30/1
13:28-08:45
2 stops13h 17m
£352
DublinChicago
DUB - MDW
DUBMDW
Dublin
Wed 24/12
05:55-17:26
2 stops17h 31m
Chicago Midway
Sat 10/1
09:34-08:05
2 stops16h 31m
£354
DublinChicago
DUB - ORD
DUBORD
Dublin
Fri 12/12
09:00-16:52
1 stop13h 52m
Chicago O'Hare Intl
Fri 30/1
15:35-07:30
1 stop9h 55m
£355
Showing 1-10 of 34 results
Best time to book a flight from Ireland to Chicago
Have a flexible travel schedule? Discover the best time to fly to Chicago from Ireland with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ireland to Chicago
What is the cheapest month to book a flight from Ireland to Chicago?
Currently, February is the cheapest month in which you can book a flight from Ireland to Chicago (average of £296). Flying from Ireland to Chicago in July is currently the most expensive (average of £470). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from IE to CHI?
Find hourly flight availability from Ireland to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 October 2025.
A simple way to save on the total cost of your ticket is to fly from Ireland to Chicago in the afternoon. If you’re flexible enough to do this you can expect to save up to 19% on your trip compared to booking a flight at midday.
Reviews of airlines servicing Chicago
Get insights into the airlines that provide service to Chicago. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chicago. Reviews last updated 30 October 2025.
Check out reviews from past customers who have flown with United Airlines, Aer Lingus, andBrussels Airlines from Ireland to Chicago to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Food
6.6
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Food
6.6
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Food
6.6
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Food
6.6
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Food
6.6
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Overall
7.4
Boarding
7.7
Comfort
7.3
Crew
8.1
Food
6.6
Entertainment
7.1
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Related info for your journey
Find useful and relevant information for your journey from Ireland to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Ireland to Chicago
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Ireland to Chicago
Discover the top 6 airlines that operate flights from Ireland to Chicago. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 30 October 2025.
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Ireland to Chicago?
Cheapflights helps you search for flights from Ireland to Chicago via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
Why should you use Cheapflights to find cheap flight tickets from Ireland to Chicago?
Cheapflights simply makes it quick and affordable to book flights from Ireland to Chicago by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from Ireland to Chicago with no change fees?
Yes, we can. To see specific flights from Ireland to Chicago with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Ireland to Chicago become cheaper?
Not ready to book yet? You can track prices for flights from Ireland to Chicago on Cheapflights with our Price Alert feature and get notified when better prices are available.