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Cheap flights from Ireland to Chicago O'Hare Intl Airport from £290
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 13/12. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
14 Nov — 21 Nov1
Find flight deals from Ireland to O'Hare Intl
Cheapest flights from Ireland to O'Hare IntlExplore the most affordable flight options available from Ireland to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 October 2025.
Explore the most affordable flight options available from Ireland to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 October 2025.
Wed 24/1211:30DUB - ORD
1 stop11h 49mAmerican Airlines
Sat 10/118:45ORD - DUB
1 stop12h 00mAmerican Airlines
Deal found 15/10£345
Wed 12/1111:30DUB - ORD
Nonstop8h 30mAer Lingus
Wed 19/1115:50ORD - DUB
Nonstop7h 20mAer Lingus
Deal found 13/10£347
Mon 15/1209:00DUB - ORD
1 stop12h 10mUnited Airlines
Tue 30/1211:07ORD - DUB
2 stops17h 13mUnited Airlines
Deal found 14/10£348
Mon 20/1016:40DUB - ORD
Nonstop8h 20mAer Lingus
Mon 27/1020:40ORD - DUB
Nonstop7h 20mAer Lingus
Deal found 13/10£349
Thu 6/1104:25DUB - ORD
1 stop17h 00mTAP AIR PORTUGAL
Wed 12/1119:10ORD - DUB
1 stop22h 10mTAP AIR PORTUGAL
Deal found 13/10£349
Fri 7/1115:20DUB - ORD
Nonstop8h 35mAer Lingus
Wed 12/1115:50ORD - DUB
Nonstop7h 20mAer Lingus
Deal found 13/10£351
Sat 27/1210:40DUB - ORD
Nonstop8h 50mUnited Airlines
Sat 10/118:35ORD - DUB
Nonstop7h 35mUnited Airlines
Deal found 15/10£352
Tue 23/1210:40DUB - ORD
Nonstop8h 50mLufthansa
Wed 7/118:35ORD - DUB
Nonstop7h 35mLufthansa
Deal found 14/10£352
Tue 23/1212:30DUB - ORD
1 stop34h 15mScandinavian Airlines
Wed 7/119:20ORD - DUB
1 stop34h 25mScandinavian Airlines
Deal found 13/10£353
Wed 5/1108:50DUB - ORD
1 stop11h 30mDelta
Tue 9/1217:20ORD - DUB
1 stop16h 25mDelta
Deal found 14/10£354
Mon 3/1108:50DUB - ORD
1 stop11h 30mDelta
Sun 9/1117:20ORD - DUB
1 stop16h 25mDelta
Deal found 13/10£355
Tue 23/1220:40DUB - ORD
1 stop23h 10mBritish Airways
Mon 5/118:30ORD - DUB
1 stop12h 05mBritish Airways
Deal found 14/10£355
Cheap flight deals from Ireland to O'Hare Intl
Keep the following information in mind while searching for Ireland to O'Hare Intl flight deals. Data was last updated 15 October 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Ireland to O'Hare Intl 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 15 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
Ireland
Fly to
O'Hare Intl
Route
Depart
Return
Price
DublinChicago
DUB - ORD
DUBORD
Dublin
Wed 24/12
09:00-19:30
1 stop16h 30m
Chicago O'Hare Intl
Sat 10/1
18:35-08:10
Nonstop7h 35m
£347
DublinChicago
DUB - ORD
DUBORD
Dublin
Mon 15/12
09:00-15:10
1 stop12h 10m
Chicago O'Hare Intl
Tue 30/12
11:07-10:20
2 stops17h 13m
£348
DublinChicago
DUB - ORD
DUBORD
Dublin
Wed 31/12
11:30-14:00
Nonstop8h 30m
Chicago O'Hare Intl
Thu 15/1
21:00-10:20
Nonstop7h 20m
£352
DublinChicago
DUB - ORD
DUBORD
Dublin
Wed 3/12
11:30-14:00
Nonstop8h 30m
Chicago O'Hare Intl
Thu 18/12
19:40-09:00
Nonstop7h 20m
£352
DublinChicago
DUB - ORD
DUBORD
Dublin
Wed 31/12
10:40-13:30
Nonstop8h 50m
Chicago O'Hare Intl
Thu 15/1
07:35-07:30
2 stops17h 55m
£352
DublinChicago
DUB - ORD
DUBORD
Dublin
Sat 27/12
11:30-14:00
Nonstop8h 30m
Chicago O'Hare Intl
Sun 11/1
21:00-10:20
Nonstop7h 20m
£352
DublinChicago
DUB - ORD
DUBORD
Dublin
Sat 27/12
10:40-13:30
Nonstop8h 50m
Chicago O'Hare Intl
Sat 10/1
14:00-07:30
1 stop11h 30m
£352
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
£352
DublinChicago
DUB - ORD
DUBORD
Dublin
Thu 12/2
10:40-13:30
Nonstop8h 50m
Chicago O'Hare Intl
Thu 26/2
18:35-08:10
Nonstop7h 35m
£352
DublinChicago
DUB - ORD
DUBORD
Dublin
Sun 1/3
10:40-13:30
Nonstop8h 50m
Chicago O'Hare Intl
Wed 11/3
19:35-08:10
Nonstop7h 35m
£352
Showing 1-10 of 19 results
Best time to book a flight from Ireland to O'Hare Intl
Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl 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 O'Hare Intl Airport
What is the cheapest month to book a flight from Ireland to Chicago O'Hare Intl Airport?
Currently, February is the cheapest month in which you can book a flight from Ireland to Chicago O'Hare Intl Airport (average of £294). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £467). 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 ORD?
Find hourly flight availability from Ireland to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 October 2025.
Unlike in the morning, when flights are generally more expensive, you can save up to 19% on flights from Ireland to Chicago O'Hare Intl Airport by exploring options for tickets in the afternoon.
Weekly flight availability from Ireland to Chicago O'Hare Intl Airport
Explore weekly flight availability from Ireland to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 15 October 2025.
The most flights from IE0 to ORD are scheduled on a Monday (13 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (12 on average).
Reviews of airlines servicing O'Hare Intl
Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated 15 October 2025.
Read reviews from past customers who have flown with Finnair, United Airlines, andAer Lingus from Ireland to Chicago O'Hare Intl Airport. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
6.7
Boarding
7.6
Comfort
7.4
Entertainment
6.9
Overall
7.6
Crew
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2025
FRA - DFW
Food
6.7
Boarding
7.6
Comfort
7.4
Entertainment
6.9
Overall
7.6
Crew
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2025
FRA - DFW
Food
6.7
Boarding
7.6
Comfort
7.4
Entertainment
6.9
Overall
7.6
Crew
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2025
FRA - DFW
Food
6.7
Boarding
7.6
Comfort
7.4
Entertainment
6.9
Overall
7.6
Crew
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2025
FRA - DFW
Food
6.7
Boarding
7.6
Comfort
7.4
Entertainment
6.9
Overall
7.6
Crew
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2025
FRA - DFW
Food
6.7
Boarding
7.6
Comfort
7.4
Entertainment
6.9
Overall
7.6
Crew
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2025
FRA - DFW
Related info for your journey
Find useful and relevant information for your journey from Ireland to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Travelling to a place near Chicago O'Hare Intl Airport?
Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locationsDowners Grove
Elk Grove Village
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Alternative routes for Ireland to O'Hare Intl
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Ireland to O'Hare Intl
Discover the top 6 airlines that operate flights from Ireland to O'Hare Intl. 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 15 October 2025.
Fly with Cheapflights
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How does Cheapflights help users find flights from Ireland to O'Hare Intl?
When you search for this flight from Ireland to O'Hare Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Ireland to O'Hare Intl?
Cheapflights simply makes it quick and affordable to book flights from Ireland to O'Hare Intl 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 O'Hare Intl with no change fees?
Cheapflights does show flights with no change fees to all users. To see these options for flights from Ireland to O'Hare Intl, users can toggle the no change fees filter when performing a flight search.
Can Cheapflights notify me if prices for flights from Ireland to O'Hare Intl become cheaper?
Yes! Start tracking prices for Ireland to O'Hare Intl flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.