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
1 adult
1 adult, Economy, 0 bags

Find flight deals from Ireland to Chicago

Enter your travel dates to find the best prices.

Cheapest flights from Ireland to Chicago
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.

Round-trip from

£341

One-way from

£330

Popular in

July

Cheapest in

September

Average price

£457

Good round-trip deal

£422 or less

Good one-way deal

£435 or less
Icelandair
  • Icelandair
  • 6/12-16/12
  • 2 total stops
  • 21h 35m total
  • Ireland to Chicago
British Airways
  • British Airways
  • 24/12
  • 1 total stop
  • 11h 35m total
  • Ireland to Chicago
Highest demand for flights based on searches. 14% potential increase in price (£58 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£7 potential savings vs. average return price).
Average for round-trip flights in October 2025
Price to beat on a round-trip flight from Ireland to Chicago (CHI).
Price to beat on a one-way flight from Ireland to Chicago (CHI).

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

Flights are sorted by cheapest return flights first.

Deals found on 28/10

Showing 1-10 of 34 results
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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
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Overall

7.4

Boarding

7.7

Comfort

7.3

Crew

8.1

Food

6.6

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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.
  • How long is the flight from Ireland to Chicago?

    Departing from Ireland to Chicago will take you 11h 50m. Ireland and Chicago are separated by a distance of 3661 mi. This flight may include one or multiple stops.

  • What are the most reliable airlines from Ireland to Chicago?

    The top 3 most reliable airlines when flying from Ireland to Chicago are American Airlines (80%), Aer Lingus (80%) and Iberia (80%).

  • What are the cheapest flights from Ireland to Chicago?

    The cheapest flight price from Ireland to Chicago is £340. On average you can expect to pay £1,017. The most popular route, (Dublin - Chicago O'Hare Intl), can usually be booked for £318.

  • Can I find deals for flights from Ireland to Chicago that include hotel bookings?

    Yes. In addition to deals on Ireland to Chicago flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Ireland to Chicago?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ireland to Chicago.

  • Can I find deals for business class flights from Ireland to Chicago?

    Yes. Cheapflights offers flight deals from Ireland to Chicago 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?

    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.

See more FAQs

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.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£244Average£363FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£304Average£485FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£320Average£556FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Aer LingusCheapest£347Average£482FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£359Average£635FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£460Average£575FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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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.

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