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Cheap flights from Ireland to Chicago from £294

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 18/11. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — CHI
13 Dec — 20 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 13 November 2025.

Fri 21/1105:55DUB - ORD
1 stop14h 25mDelta
Thu 27/1107:00ORD - DUB
2 stops19h 00mDelta
Deal found 10/11£356
Tue 18/1117:15DUB - ORD
1 stop27h 05mMultiple Airlines
Mon 24/1117:20ORD - DUB
1 stop16h 25mMultiple Airlines
Deal found 11/11£359
Wed 19/1105:55DUB - ORD
1 stop14h 25mDelta
Tue 25/1110:46ORD - DUB
2 stops19h 54mDelta
Deal found 11/11£360
Tue 18/1105:55DUB - ORD
2 stops20h 34mDelta
Mon 24/1107:00ORD - DUB
2 stops18h 50mDelta
Deal found 11/11£361
Thu 20/1108:55DUB - ORD
1 stop12h 15mDelta
Wed 26/1106:45ORD - DUB
1 stop19h 00mDelta
Deal found 11/11£363
Fri 21/1105:55DUB - MDW
2 stops18h 19mDelta
Thu 27/1106:00MDW - DUB
2 stops20h 45mDelta
Deal found 10/11£363
Thu 20/1105:55DUB - MDW
2 stops18h 13mDelta
Wed 26/1109:34MDW - DUB
2 stops16h 31mDelta
Deal found 11/11£365
Fri 21/1105:55DUB - ORD
1 stop14h 25mDelta
Fri 28/1110:25ORD - DUB
2 stops15h 35mDelta
Deal found 11/11£369
Fri 21/1108:50DUB - ORD
1 stop11h 30mMultiple Airlines
Sat 6/1217:20ORD - DUB
1 stop23h 35mMultiple Airlines
Deal found 12/11£372
Sat 22/1105:55DUB - ORD
1 stop14h 25mDelta
Mon 1/1208:55ORD - DUB
2 stops17h 10mDelta
Deal found 11/11£373
Thu 20/1105:55DUB - MDW
2 stops18h 23mDelta
Thu 27/1109:41MDW - DUB
1 stop16h 04mDelta
Deal found 12/11£376
Tue 18/1108:50DUB - MDW
2 stops15h 18mDelta
Fri 28/1109:34MDW - DUB
2 stops16h 11mDelta
Deal found 11/11£378

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 13 November 2025.

Round-trip from

£350

One-way from

£294

Popular in

July

Cheapest in

September

Average price

£364

Good round-trip deal

£426 or less

Good one-way deal

£503 or less
Lufthansa
  • Lufthansa
  • 24/3-31/3
  • 1 total stop
  • 21h 40m total
  • Ireland to Chicago
Search Deals
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 18/11
  • 1 total stop
  • 28h 05m total
  • Ireland to Chicago
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£61 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 November 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 13 November 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

Tue 24/3

05:00-14:10

1 stop14h 10m

Chicago O'Hare Intl

Tue 31/3

20:15-09:45

Nonstop7h 30m

£350

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 31/3

08:35-18:15

1 stop15h 40m

Chicago O'Hare Intl

Tue 7/4

19:05-11:55

1 stop10h 50m

£354

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 22/2

09:00-15:10

1 stop12h 10m

Chicago O'Hare Intl

Wed 4/3

18:35-08:10

Nonstop7h 35m

£361

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 30/3

09:40-17:50

1 stop14h 10m

Chicago O'Hare Intl

Tue 7/4

16:45-09:55

1 stop11h 10m

£361

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 1/3

05:55-16:40

2 stops16h 45m

Chicago O'Hare Intl

Wed 11/3

13:30-08:45

1 stop14h 15m

£362

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 12/2

08:50-17:37

2 stops14h 47m

Chicago Midway

Thu 26/2

13:49-07:45

1 stop11h 56m

£362

DublinChicago

DUB - MDW

DUBMDW

Dublin

Sun 1/3

05:55-17:37

2 stops17h 42m

Chicago Midway

Wed 11/3

13:00-08:45

2 stops14h 45m

£362

DublinChicago

DUB - MDW

DUBMDW

Dublin

Fri 13/2

05:55-18:37

2 stops18h 42m

Chicago Midway

Fri 27/2

10:53-07:45

1 stop14h 52m

£362

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 12/2

05:55-17:37

2 stops17h 42m

Chicago Midway

Thu 26/2

09:34-07:45

2 stops16h 11m

£363

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 22/2

08:45-15:10

1 stop12h 25m

Chicago O'Hare Intl

Wed 4/3

14:11-12:40

2 stops16h 29m

£364

Flights are sorted by cheapest return flights first.

Deals found on 12/11

Showing 1-10 of 33 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 £474). 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 13 November 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 20% 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 13 November 2025.

The most flights from IE0 to CHI are scheduled on a Monday (13 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (12 on average).

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 13 November 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
9,015 reviews
Check prices

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

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
9,015 reviews
United Airlines
7.4
Good
9,015 reviews
Check prices

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

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
1,370 reviews
United Airlines
7.4
Good
9,015 reviews
Check prices

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

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
369 reviews
United Airlines
7.4
Good
9,015 reviews
Check prices

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

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
7.1
Good
578 reviews
United Airlines
7.4
Good
9,015 reviews
Check prices

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

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
7,516 reviews
United Airlines
7.4
Good
9,015 reviews
Check prices

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Boarding

7.7

Overall

7.4

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 12h 10m. Ireland and Chicago are separated by a distance of 3661 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Ireland to Chicago one-way?

    £294 is the cheapest one-way deal found within the past few days, from TAP AIR PORTUGAL. You may also be able to find cheap deals on Aer Lingus and British Airways, with prices starting from £319 and £331, respectively.

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

    The top 3 most reliable airlines when flying from Ireland to Chicago are Air Canada (86%), Austrian Airlines (75%) and Brussels Airlines (75%).

  • What are the cheapest flights from Ireland to Chicago?

    The cheapest flight price from Ireland to Chicago is £342. On average you can expect to pay £1,001. 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 £295). Flying from Ireland to Chicago in July is currently the most expensive (average of £474). 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
Gatwick to O'Hare Intl flights
Heathrow to Midway flights
London City to O'Hare Intl flights
Stansted to O'Hare Intl flights
Luton to O'Hare Intl flights
Gatwick to Midway flights
Heathrow to St. Louis flights
Bruxelles-National to O'Hare Intl flights
Manchester to O'Hare Intl flights
Edinburgh to O'Hare Intl flights
Istanbul to O'Hare Intl flights
Manchester to Midway flights
Glasgow Intl to O'Hare Intl flights
Gatwick to St. Louis flights
London City to St. Louis flights
Bristol to O'Hare Intl flights
Bristol to Midway flights
Birmingham to O'Hare Intl flights
Southend to O'Hare Intl flights
Edinburgh to Midway flights
Leeds to O'Hare Intl flights
Birmingham to Midway flights
Dublin to O'Hare Intl flights
Manchester to St. Louis flights
Newcastle upon Tyne to O'Hare Intl flights
Belfast Intl to O'Hare Intl flights
Leeds to Midway flights
Belfast City to O'Hare Intl flights
Dublin to Midway flights
Glasgow Intl to Midway flights
London City to Midway flights
Manchester to Moline flights
Gatwick to Champaign flights
Stansted to St. Louis flights
Edinburgh to St. Louis flights
Heathrow to Peoria flights
Southampton to O'Hare Intl flights
Heathrow to Champaign flights
Newcastle upon Tyne to St. Louis flights
Luton to St. Louis flights
Manchester to Peoria flights
Glasgow Intl to Moline flights
Heathrow to Moline flights
Newcastle upon Tyne to Midway flights
Liverpool to O'Hare Intl flights
Heathrow to Evansville flights
Southampton to Midway 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 13 November 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£246Average£366FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£306Average£488FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£322Average£560FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Aer LingusCheapest£350Average£491FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£362Average£636FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£463Average£503FlexibilityNo 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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