Cheap flights from Ireland to Chicago O'Hare Intl Airport from £312
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — ORD
5 Dec — 12 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheap flight deals from Ireland to O'Hare Intl
Enter your travel dates to find the best prices.
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Cheapest flights from Ireland to O'Hare Intl
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 5 November 2026.
Sun 6/1219:05 -
1 stop27h 40m
Thu 10/1219:10 -
1 stop17h 10m
Deal found 4/11£436
Sat 21/1119:05 -
1 stop27h 40m
Mon 23/1119:10 -
1 stop17h 10m
Deal found 4/11£441
Sat 5/1211:30 -
1 stop11h 50m
Fri 25/1218:30 -
1 stop9h 45m
Deal found 4/11£448
Thu 19/1111:30 -
1 stop11h 50m
Mon 23/1118:30 -
1 stop9h 45m
Deal found 4/11£456
Sun 6/1219:05 -
1 stop27h 40m
Tue 29/1219:10 -
1 stop34h 35m
Deal found 4/11£462
Wed 16/1211:30 -
1 stop11h 50m
Mon 4/118:30 -
1 stop9h 45m
Deal found 31/10£465
Sat 21/1119:05 -
1 stop27h 40m
Sun 22/1119:10 -
1 stop34h 35m
Deal found 4/11£466
Sat 21/1110:05 -
2 stops36h 40m
Mon 30/1119:10 -
1 stop17h 10m
Deal found 1/11£468
Tue 24/1119:05 -
1 stop27h 40m
Sun 29/1119:10 -
2 stops33h 35m
Deal found 2/11£469
Tue 24/1111:30 -
2 stops35h 15m
Mon 30/1119:10 -
1 stop17h 10m
Deal found 3/11£470
Fri 4/1220:05 -
1 stop23h 40m
Mon 14/1220:30 -
1 stop16h 55m
Deal found 3/11£494
Thu 12/1120:05 -
1 stop25h 25m
Mon 16/1120:30 -
1 stop16h 55m
Deal found 2/11£495
Best flights from Ireland to O'Hare Intl
Discover carefully curated flight deals from Ireland to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 November 2026.
Wed 16/1208:50 -
2 stops18h 46m
Wed 23/1215:29 -
1 stop10h 26m
Deal found 1/11£494
Fri 4/1220:05 -
1 stop25h 30m
Mon 7/1220:30 -
1 stop16h 55m
Deal found 1/11£494
Mon 9/1109:00 -
1 stop16h 58m
Mon 16/1118:30 -
Nonstop7h 40m
Deal found 2/11£510
Tue 2/220:05 -
1 stop25h 15m
Tue 16/220:40 -
1 stop14h 05m
Deal found 31/10£502
Mon 9/1108:50 -
1 stop11h 35m
Mon 16/1114:44 -
2 stops17h 46m
Deal found 2/11£504
Thu 12/1109:00 -
1 stop12h 38m
Wed 18/1111:56 -
1 stop13h 34m
Deal found 4/11£511
Fri 22/120:05 -
1 stop23h 40m
Thu 28/118:40 -
1 stop10h 50m
Deal found 3/11£503
Sat 21/1108:50 -
1 stop11h 35m
Tue 24/1110:35 -
2 stops16h 25m
Deal found 4/11£505
Thu 26/1110:40 -
Nonstop8h 40m
Sun 29/1118:30 -
Nonstop7h 40m
Deal found 3/11£513
Sat 14/1108:50 -
2 stops18h 52m
Mon 23/1110:30 -
2 stops16h 30m
Deal found 4/11£511
Fri 20/1110:40 -
Nonstop8h 40m
Tue 24/1115:36 -
1 stop9h 54m
Deal found 4/11£514
Mon 1/220:05 -
2 stops48h 50m
Sun 7/217:40 -
2 stops17h 05m
Deal found 2/11£524
Thu 19/1110:40 -
Nonstop8h 40m
Mon 23/1118:30 -
Nonstop7h 40m
Deal found 4/11£514
Fri 4/1220:05 -
2 stops48h 50m
Mon 14/1220:30 -
1 stop16h 55m
Deal found 3/11£560
Thu 12/1110:40 -
Nonstop8h 40m
Sat 21/1107:45 -
1 stop20h 35m
Deal found 4/11£516
Tue 1/1220:05 -
1 stop23h 40m
Tue 8/1217:40 -
2 stops17h 05m
Deal found 3/11£566
Wed 2/1220:05 -
2 stops24h 50m
Wed 9/1220:30 -
1 stop14h 15m
Deal found 3/11£600
Wed 24/207:50 -
1 stop11h 55m
Sun 28/215:36 -
2 stops13h 54m
Deal found 3/11£645
Sat 9/107:50 -
2 stops22h 07m
Mon 11/118:40 -
1 stop10h 50m
Deal found 31/10£647
Direct flights from Ireland to O'Hare Intl
Explore direct flight options from Ireland to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 5 November 2026.
Mon 1/210:40 -
Nonstop8h 40m
Mon 8/218:30 -
Nonstop7h 40m
Deal found 3/11£493
Thu 26/1110:40 -
Nonstop8h 40m
Sun 29/1118:30 -
Nonstop7h 40m
Deal found 3/11£494
Wed 13/116:40 -
Nonstop8h 35m
Sat 16/121:00 -
Nonstop7h 25m
Deal found 3/11£497
Thu 12/1111:30 -
Nonstop8h 40m
Wed 18/1115:55 -
Nonstop7h 20m
Deal found 3/11£497
Wed 23/1211:30 -
Nonstop8h 40m
Wed 6/121:00 -
Nonstop7h 25m
Deal found 3/11£499
Mon 9/1111:30 -
Nonstop8h 40m
Mon 16/1115:55 -
Nonstop7h 20m
Deal found 2/11£500
Thu 26/1111:30 -
Nonstop8h 40m
Sun 29/1120:05 -
Nonstop7h 25m
Deal found 3/11£502
Wed 16/1211:30 -
Nonstop8h 40m
Wed 23/1215:55 -
Nonstop7h 20m
Deal found 1/11£506
Fri 20/1115:50 -
Nonstop8h 30m
Mon 23/1120:05 -
Nonstop7h 25m
Deal found 4/11£507
Fri 20/1115:50 -
Nonstop8h 30m
Tue 24/1120:05 -
Nonstop7h 25m
Deal found 4/11£508
Tue 24/1110:40 -
Nonstop8h 40m
Sun 29/1118:30 -
Nonstop7h 40m
Deal found 1/11£511
Tue 1/1210:40 -
Nonstop8h 40m
Wed 9/1218:30 -
Nonstop7h 40m
Deal found 3/11£512
Last-minute flights from Ireland to O'Hare Intl
Discover last-minute flight deals from Ireland to O'Hare Intl. Data last updated 5 November 2026 and is based on user searches.
Thu 12/1120:05 -
1 stop25h 25m
Mon 16/1120:30 -
1 stop16h 55m
Deal found 2/11£495
Thu 19/1111:30 -
1 stop11h 50m
Mon 23/1118:30 -
1 stop9h 45m
Deal found 4/11£456
Sat 21/1119:05 -
1 stop27h 40m
Mon 23/1119:10 -
1 stop17h 10m
Deal found 4/11£441
Sat 21/1119:05 -
1 stop27h 40m
Sun 22/1119:10 -
1 stop34h 35m
Deal found 4/11£466
Sat 21/1110:05 -
2 stops36h 40m
Mon 30/1119:10 -
1 stop17h 10m
Deal found 1/11£468
Tue 24/1119:05 -
1 stop27h 40m
Sun 29/1119:10 -
2 stops33h 35m
Deal found 2/11£469
Tue 24/1111:30 -
2 stops35h 15m
Mon 30/1119:10 -
1 stop17h 10m
Deal found 3/11£470
Fri 4/1220:05 -
1 stop23h 40m
Mon 14/1220:30 -
1 stop16h 55m
Deal found 3/11£494
Sat 5/1211:30 -
1 stop11h 50m
Fri 25/1218:30 -
1 stop9h 45m
Deal found 4/11£448
Sun 6/1219:05 -
1 stop27h 40m
Thu 10/1219:10 -
1 stop17h 10m
Deal found 4/11£436
Sun 6/1219:05 -
1 stop27h 40m
Thu 24/1219:10 -
1 stop32h 15m
Deal found 4/11£462
Wed 16/1211:30 -
1 stop11h 50m
Mon 4/118:30 -
1 stop9h 45m
Deal found 31/10£465
One-way flights from Ireland to O'Hare Intl
Search for one-way flight options from Ireland to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 5 November 2026.
Fri 11/1221:55 -
3 stops47h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 4/11£312
Thu 10/1213:20 -
2 stops32h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 4/11£313
Mon 7/1206:15 -
3 stops41h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 4/11£324
Sun 6/1220:50 -
2 stops26h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 4/11£328
Wed 9/1213:10 -
2 stops34h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 4/11£329
Sat 9/108:50 -
2 stops16h 26m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 1/11£333
Fri 8/113:25 -
2 stops26h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/11£335
Thu 19/1104:25 -
1 stop17h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/11£337
Sat 21/1104:15 -
1 stop17h 15m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 4/11£338
Sat 5/1216:55 -
1 stop28h 35m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 4/11£345
Tue 22/1207:50 -
2 stops21h 42m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 2/11£430
Fri 26/307:50 -
2 stops35h 41m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 31/10£464
Find 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 5 November 2026.
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 7,457,451 searches. Data last updated 5 November 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
Cheapest return flight
DublinChicago
DUB Dublin - ORD Chicago O'Hare Intl
DUBORD
Dublin
Sat 9/1
08:50-19:16
2 stops16h 26m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£333
DublinChicago
DUB Dublin - ORD Chicago O'Hare Intl
DUBORD
Dublin
Sat 9/1
08:50-19:16
2 stops16h 26m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£333
DublinChicago
DUB Dublin - ORD Chicago O'Hare Intl
DUBORD
Dublin
Thu 19/11
04:25-15:30
1 stop17h 05m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£337
DublinChicago
DUB Dublin - ORD Chicago O'Hare Intl
DUBORD
Dublin
Sat 21/11
16:55-15:30
1 stop28h 35m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£337
Fastest return journey
DublinChicago
DUB Dublin - ORD Chicago O'Hare Intl
DUBORD
Dublin
Mon 7/12
15:50-18:20
Nonstop8h 30m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£404
DublinChicago
DUB Dublin - ORD Chicago O'Hare Intl
DUBORD
Dublin
Sun 10/1
16:40-19:15
Nonstop8h 35m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£410
ShannonChicago
SNN Shannon - ORD Chicago O'Hare Intl
SNNORD
Shannon
Tue 22/12
07:50-23:32
2 stops21h 42m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£430
ShannonChicago
SNN Shannon - ORD Chicago O'Hare Intl
SNNORD
Shannon
Fri 26/3
07:50-14:31
2 stops35h 41m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£464
DublinChicago
DUB Dublin - ORD Chicago O'Hare Intl
DUBORD
Dublin
Sun 29/11
10:40-18:20
1 stop37h 40m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£469
DublinChicago
DUB Dublin - ORD Chicago O'Hare Intl
DUBORD
Dublin
Sat 9/1
04:15-13:49
2 stops39h 34m
Chicago O'Hare Intl
Wed 31/12
00:00-07:00
Nonstop0h 00m
£476
Flights are sorted by cheapest return flights first.
Deals found on 2/11
Showing 1-10 of 32 resultsSorted by cheapest first
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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.
DUB-ORD
SNN-ORD
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
IE0-ORD
DUB-ORD
SNN-ORD
What is the cheapest month to book a flight from Ireland to Chicago O'Hare Intl Airport?
Currently, November is the cheapest month in which you can book a flight from Ireland to Chicago O'Hare Intl Airport (average of £420). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £629). 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 5 November 2026.
When flying from Ireland to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
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 5 November 2026.
The most flights from IE0 to ORD are scheduled on a Monday (13 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (11 on average).
How often are flights from Ireland to Chicago delayed?
About 10% of weekly flights between Ireland and Chicago have experienced delays in the past year, with the average delay time being 165 minutes.
What is the most punctual flight time for Ireland to Chicago flights?
Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Monday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Ireland to Chicago flights?
Over the past year, Aer Lingus have had the lowest number of delays on this route, with just 8% of flights being delayed.
How far ahead should I book a flight from Ireland to Chicago O'Hare Intl Airport?
The best time to book flights from Ireland to Chicago O'Hare Intl Airport is 53 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
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 5 November 2026.
Read reviews from past customers who have flown with Finnair,Aer Lingus, andUnited Airlines
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.
Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.
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.
How long is the flight from Ireland to Chicago O'Hare Intl Airport?
There are many flights that can get you from Ireland to Chicago O'Hare Intl Airport in 16h 58m. Fly via Delta, British Airways, or United Airlines to get the fastest option. The distance between Ireland and Chicago O'Hare Intl Airport is about 3661 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the most reliable airlines from Ireland to Chicago O'Hare Intl Airport?
Consider Finnair (71%), American Airlines (68%) or Aer Lingus (68%) when booking your flight. These represent the most reliable airlines when flying from Ireland to Chicago O'Hare Intl Airport.
What are the cheapest flights from Ireland to Chicago O'Hare Intl Airport?
On average you can expect to pay £947 for a flight from Ireland to Chicago O'Hare Intl Airport. The cheapest flight overall is £386 while the most popular route, (Dublin - Chicago O'Hare Intl) is currently priced at £477.
Can I find deals for business class flights from Ireland to O'Hare Intl?
Yes. Cheapflights offers flight deals from Ireland to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ireland to Chicago O'Hare Intl Airport?
Currently, November is the cheapest month in which you can book a flight from Ireland to Chicago O'Hare Intl Airport (average of £420). Flying from Ireland to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £629). 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.
Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 5 November 2026.
Discover the top 5 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 7,457,451 searches. Data last updated 5 November 2026.
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 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.
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