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Cheap flights from Ireland to Chicago from £261

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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — CHI
20 Dec — 27 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 20 November 2025.

Wed 3/1211:30DUB - ORD
1 stop11h 50mIcelandair
Mon 15/1218:30ORD - DUB
1 stop9h 45mIcelandair
Deal found 19/11£368
Wed 10/1211:30DUB - ORD
1 stop12h 09mMultiple Airlines
Sun 14/1216:55ORD - DUB
1 stop9h 45mMultiple Airlines
Deal found 19/11£370
Tue 2/1211:30DUB - ORD
1 stop12h 14mMultiple Airlines
Fri 12/1214:42ORD - DUB
1 stop11h 58mMultiple Airlines
Deal found 18/11£371
Tue 2/1217:15DUB - ORD
1 stop27h 05mMultiple Airlines
Thu 11/1210:35ORD - DUB
1 stop16h 45mMultiple Airlines
Deal found 19/11£374
Fri 5/1205:55DUB - ORD
2 stops18h 32mDelta
Mon 8/1210:36ORD - DUB
2 stops15h 24mDelta
Deal found 18/11£375
Wed 10/1205:55DUB - ORD
2 stops21h 44mDelta
Sun 14/1213:20ORD - DUB
1 stop12h 25mDelta
Deal found 19/11£377
Fri 5/1205:55DUB - ORD
2 stops18h 32mDelta
Thu 11/1215:50ORD - DUB
1 stop11h 30mDelta
Deal found 18/11£378
Fri 5/1205:55DUB - MDW
2 stops18h 23mDelta
Mon 8/1210:49MDW - DUB
1 stop14h 56mDelta
Deal found 18/11£378
Mon 24/1105:55DUB - MDW
2 stops18h 23mDelta
Tue 2/1213:50MDW - DUB
1 stop11h 55mDelta
Deal found 17/11£378
Thu 4/1208:50DUB - ORD
2 stops17h 45mDelta
Wed 10/1216:25ORD - DUB
1 stop14h 15mDelta
Deal found 19/11£379
Thu 4/1205:55DUB - MDW
2 stops18h 05mDelta
Wed 10/1213:50MDW - DUB
2 stops16h 50mDelta
Deal found 19/11£379
Thu 27/1113:25DUB - MDW
2 stops16h 15mDelta
Wed 3/1213:14MDW - DUB
2 stops13h 31mDelta
Deal found 19/11£382

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 20 November 2025.

Round-trip from

£355

One-way from

£261

Popular in

July

Cheapest in

September

Average price

£365

Good round-trip deal

£427 or less

Good one-way deal

£504 or less
British Airways
  • British Airways
  • 31/3-7/4
  • 2 total stops
  • 24h 10m total
  • Ireland to Chicago
Search Deals
6/2
  • 6/2
  • 2 total stops
  • 39h 35m 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 20 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 31/3

08:35-15:55

1 stop13h 20m

Chicago O'Hare Intl

Tue 7/4

17:00-09:50

1 stop10h 50m

£355

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 27/2

19:05-16:45

1 stop27h 40m

Chicago O'Hare Intl

Wed 11/3

20:20-18:20

1 stop17h 00m

£358

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 3/3

19:05-16:45

1 stop27h 40m

Chicago O'Hare Intl

Sat 7/3

19:20-18:20

1 stop17h 00m

£358

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 27/2

19:05-16:45

1 stop27h 40m

Chicago O'Hare Intl

Sat 7/3

19:20-18:20

1 stop17h 00m

£358

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 3/3

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Fri 6/3

18:30-10:15

1 stop9h 45m

£368

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 27/3

11:30-20:07

1 stop13h 37m

Chicago O'Hare Intl

Sat 4/4

14:36-06:30

1 stop9h 54m

£371

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 5/12

05:55-18:27

2 stops18h 32m

Chicago O'Hare Intl

Mon 8/12

10:36-08:00

2 stops15h 24m

£375

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 12/1

06:00-15:10

1 stop15h 10m

Chicago O'Hare Intl

Mon 19/1

07:01-07:50

2 stops18h 49m

£375

DublinChicago

DUB - MDW

DUBMDW

Dublin

Fri 16/1

05:55-17:37

2 stops17h 42m

Chicago Midway

Sun 25/1

13:26-15:45

2 stops20h 19m

£375

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 10/12

05:55-21:39

2 stops21h 44m

Chicago O'Hare Intl

Sun 14/12

13:20-07:45

1 stop12h 25m

£377

Flights are sorted by cheapest return flights first.

Deals found on 17/11

Showing 1-10 of 35 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 £475). 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 20 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 20 November 2025.

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

How often are flights $[0, preposition:'from ']$[0, article:'from ']$[0, place:'from'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] delayed?

About 13% of weekly flights between $[0, place:'genitive'] and $[1, place:'genitive'] have experienced delays in the past year, with the average delay time being 139 minutes.

What is the most punctual flight time for $[0,article:'genitive ']$[0,place:'genitive'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] 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.

Which airline has the best punctuality record on $[0,article:'genitive ']$[0,place:'genitive'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] flights?

Over the past year, Etihad Airways have had the lowest number of delays on this route, with no flights being classified as 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 20 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
9,020 reviews
Check prices

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

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
9,020 reviews
United Airlines
7.4
Good
9,020 reviews
Check prices

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

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
1,376 reviews
United Airlines
7.4
Good
9,020 reviews
Check prices

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

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
9,020 reviews
Check prices

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

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
7.0
Good
580 reviews
United Airlines
7.4
Good
9,020 reviews
Check prices

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

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
7,532 reviews
United Airlines
7.4
Good
9,020 reviews
Check prices

Crew

8.1

Food

6.6

Boarding

7.7

Entertainment

7.1

Comfort

7.3

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 13h 20m. 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 Air Canada (78%), 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 £343. On average you can expect to pay £1,003. The most popular route, (Dublin - Chicago O'Hare Intl), can usually be booked for £365.

  • 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 £475). 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
Heathrow to St. Louis flights
Bruxelles-National to O'Hare Intl flights
Gatwick to Midway flights
Glasgow Intl to O'Hare Intl flights
Edinburgh to O'Hare Intl flights
Manchester to O'Hare Intl flights
Istanbul to O'Hare Intl flights
Gatwick to St. Louis flights
Glasgow Intl to Midway flights
Manchester to Midway flights
Edinburgh to Midway flights
London City to St. Louis flights
Birmingham to O'Hare Intl flights
Leeds to O'Hare Intl flights
Southend to O'Hare Intl flights
Leeds to Midway flights
Belfast Intl to O'Hare Intl flights
Birmingham to Midway flights
Edinburgh to St. Louis flights
Newcastle upon Tyne to O'Hare Intl flights
Belfast City to O'Hare Intl flights
Glasgow Intl to Moline flights
Glasgow Intl to St. Louis flights
Heathrow to Champaign flights
Manchester to Peoria flights
Southampton to O'Hare Intl flights
Manchester to St. Louis flights
Leeds to St. Louis flights
Newcastle upon Tyne to Midway flights
Norwich to O'Hare Intl flights
Newquay to O'Hare Intl flights
Bristol to O'Hare Intl flights
Dublin to O'Hare Intl flights
Exeter to O'Hare Intl flights
Stansted to St. Louis flights
Luton to St. Louis flights
Birmingham to St. Louis flights
London City to Midway flights
Newcastle upon Tyne to St. Louis flights
Liverpool to O'Hare Intl flights
Cardiff to Midway flights
Grimsby 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 20 November 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£247Average£367FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£306Average£489FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£323Average£561FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Aer LingusCheapest£351Average£492FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£363Average£637FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£464Average£504FlexibilityNo 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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