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Cheap flights from Ireland to Chicago from £337

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 1/2. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — CHI
2 Jan — 9 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 3 December 2025.

Wed 10/1205:55DUB - ORD
1 stop14h 25mDelta
Sun 14/1205:30ORD - DUB
1 stop20h 15mDelta
Deal found 2/12£445
Wed 10/1209:00DUB - ORD
1 stop12h 10mUnited Airlines
Sun 14/1213:36ORD - DUB
2 stops14h 44mUnited Airlines
Deal found 2/12£448
Sun 7/1205:55DUB - ORD
1 stop14h 25mDelta
Sun 14/1213:20ORD - DUB
1 stop12h 25mDelta
Deal found 1/12£501
Sun 7/1205:55DUB - MDW
2 stops18h 23mDelta
Sun 14/1212:50MDW - DUB
1 stop12h 55mDelta
Deal found 1/12£505
Sun 7/1209:00DUB - ORD
1 stop14h 48mUnited Airlines
Sun 14/1218:35ORD - DUB
Nonstop7h 35mUnited Airlines
Deal found 1/12£507
Sun 7/1209:45DUB - MDW
1 stop20h 02mKLM
Sun 14/1213:05MDW - DUB
1 stop12h 40mKLM
Deal found 1/12£513
Mon 22/1207:35DUB - ORD
1 stop13h 50mBritish Airways
Wed 31/1217:10ORD - DUB
1 stop10h 30mBritish Airways
Deal found 2/12£515
Thu 18/1209:45DUB - MDW
1 stop29h 34mDelta
Fri 26/1217:59MDW - DUB
1 stop31h 46mDelta
Deal found 1/12£518
Wed 24/1211:30DUB - ORD
1 stop11h 49mMultiple Airlines
Fri 2/113:15ORD - DUB
1 stop11h 55mMultiple Airlines
Deal found 2/12£525
Mon 22/1209:45DUB - ORD
1 stop12h 34mDelta
Wed 31/1218:02ORD - DUB
2 stops15h 43mDelta
Deal found 2/12£526
Mon 22/1209:45DUB - MDW
1 stop12h 35mDelta
Wed 31/1218:08MDW - DUB
2 stops15h 37mDelta
Deal found 2/12£526
Mon 22/1209:45DUB - MDW
1 stop12h 35mKLM
Wed 31/1206:00MDW - DUB
1 stop19h 45mKLM
Deal found 2/12£528

Find flight deals from Ireland to Chicago

Keep the following information in mind while searching for Ireland to Chicago flight deals. Data was last updated 3 December 2025.

Round-trip from

£355

One-way from

£337

Popular in

July

Cheapest in

September

Average price

£393

Good round-trip deal

£366 or less

Good one-way deal

£381 or less
12/1-18/1
  • 12/1-18/1
  • 2 total stops
  • 25h 24m total
  • Ireland to Chicago
Search Deals
1/2
  • 1/2
  • 2 total stops
  • 17h 57m total
  • Ireland to Chicago
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£60 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Ireland to Chicago (CHI).
Search Deals
Price to beat on a one-way flight from Ireland to Chicago (CHI).
Search Deals

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 3 December 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

Fri 16/1

11:30-20:15

1 stop14h 45m

Chicago O'Hare Intl

Tue 20/1

18:25-12:10

1 stop11h 45m

£356

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 31/3

09:30-15:09

1 stop11h 39m

Chicago O'Hare Intl

Tue 7/4

14:55-06:30

1 stop9h 35m

£371

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 30/4

12:40-19:29

1 stop12h 49m

Chicago O'Hare Intl

Fri 8/5

16:45-09:55

1 stop11h 10m

£371

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 30/3

09:30-15:09

1 stop11h 39m

Chicago O'Hare Intl

Mon 6/4

16:05-09:55

1 stop11h 50m

£371

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 29/1

08:45-15:10

1 stop12h 25m

Chicago O'Hare Intl

Wed 4/2

13:58-10:50

2 stops14h 52m

£376

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 15/1

05:55-17:34

2 stops17h 39m

Chicago Midway

Fri 23/1

13:26-08:45

2 stops13h 19m

£379

DublinChicago

DUB - MDW

DUBMDW

Dublin

Fri 16/1

05:55-17:37

2 stops17h 42m

Chicago Midway

Fri 23/1

13:26-08:45

2 stops13h 19m

£379

DublinChicago

DUB - MDW

DUBMDW

Dublin

Sun 1/3

05:55-17:37

2 stops17h 42m

Chicago Midway

Wed 11/3

14:03-12:40

2 stops17h 37m

£380

DublinChicago

DUB - MDW

DUBMDW

Dublin

Sun 18/1

05:55-16:29

2 stops16h 34m

Chicago Midway

Sun 25/1

13:26-08:05

2 stops12h 39m

£385

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 5/2

05:55-17:55

2 stops18h 00m

Chicago Midway

Wed 11/2

10:46-08:05

2 stops15h 19m

£385

Flights are sorted by cheapest return flights first.

Deals found on 2/12

Showing 1-10 of 37 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 £295). Flying from Ireland to Chicago in July is currently the most expensive (average of £471). 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 3 December 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 21% on your trip compared to booking a flight at midday.

Weekly flight availability from Ireland to Chicago

Explore weekly flight availability from Ireland to Chicago. 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 3 December 2025.

The most flights from IE0 to CHI 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 (9 on average).

How often are flights from Ireland to Chicago delayed?

About 13% of weekly flights between Ireland and Chicago have experienced delays in the past year, with the average delay time being 139 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?

Thursday tends to have the lowest number of delays on this route, whereas Tuesday 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.

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 3 December 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.
United Airlines
7.4
Good
9,064 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

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
United Airlines
7.4
Good
9,064 reviews
United Airlines
7.4
Good
9,064 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

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
Aer Lingus
7.2
Good
1,384 reviews
United Airlines
7.4
Good
9,064 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

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
Brussels Airlines
7.2
Good
373 reviews
United Airlines
7.4
Good
9,064 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

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
Icelandair
7.0
Good
584 reviews
United Airlines
7.4
Good
9,064 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

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
British Airways
6.7
Okay
7,555 reviews
United Airlines
7.4
Good
9,064 reviews
Check prices

Boarding

7.7

Food

6.6

Comfort

7.3

Entertainment

7.1

Overall

7.4

Crew

8.1

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 17h 39m. Ireland and Chicago are separated by a distance of 3664 mi.

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

    The top 3 most reliable airlines when flying from Ireland to Chicago are Alaska Airlines (80%), Finnair (80%) and Iberia (79%).

  • What are the cheapest flights from Ireland to Chicago?

    The cheapest flight price from Ireland to Chicago is £352. On average you can expect to pay £897. The most popular route, (Dublin - Chicago O'Hare Intl), can usually be booked for £311.

  • 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 £295). Flying from Ireland to Chicago in July is currently the most expensive (average of £471). 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.
Heathrow to O'Hare Intl flights
Heathrow to Midway flights
Gatwick to O'Hare Intl flights
London City to O'Hare Intl flights
Stansted to O'Hare Intl flights
Luton to O'Hare Intl flights
Bruxelles-National to O'Hare Intl flights
Gatwick to Midway flights
Heathrow to St. Louis flights
Manchester to O'Hare Intl flights
Edinburgh to O'Hare Intl flights
Istanbul to O'Hare Intl flights
Birmingham to O'Hare Intl flights
Manchester to Midway flights
Gatwick to St. Louis flights
Edinburgh to Midway flights
London City to St. Louis flights
Newcastle upon Tyne to O'Hare Intl flights
Birmingham to Midway flights
Glasgow Intl to O'Hare Intl flights
Stansted to St. Louis flights
Glasgow Intl to Midway flights
Newcastle upon Tyne to Midway flights
Southend to O'Hare Intl flights
London City to Midway flights
Inverness to O'Hare Intl flights
Belfast Intl to O'Hare Intl flights
Leeds to O'Hare Intl flights
Dublin to O'Hare Intl flights
Manchester to St. Louis flights
Leeds to Midway flights
Belfast City to O'Hare Intl flights
Heathrow to Champaign flights
Liverpool to O'Hare Intl flights
Bristol to O'Hare Intl flights
Cardiff to O'Hare Intl flights
Southampton to O'Hare Intl flights
Birmingham to St. Louis flights
Southampton to Midway flights
Cardiff to Midway flights
Luton to St. Louis flights
Edinburgh to St. Louis flights
Bristol to Midway flights
Manchester to Peoria flights
Heathrow to Peoria flights
Darlington to O'Hare Intl flights
Newquay to O'Hare Intl flights

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 3 December 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£245Average£356FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£304Average£443FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£320Average£543FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Aer LingusCheapest£348Average£488FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£360Average£638FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£461Average£500FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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.

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