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Cheap flights from Ireland to Chicago from £363

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 30/1. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — CHI
31 Jan — 7 Feb1
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 1 January 2026.

Tue 30/1217:15DUB - ORD
1 stop27h 05mKLM
Sat 3/116:25ORD - DUB
1 stop23h 45mKLM
Deal found 29/12£623
Wed 31/1206:00DUB - ORD
1 stop15h 10mDelta
Tue 6/113:55ORD - DUB
2 stops16h 45mDelta
Deal found 30/12£628
Tue 30/1213:35DUB - ORD
1 stop26h 19mUnited Airlines
Sat 3/118:21ORD - DUB
1 stop9h 59mUnited Airlines
Deal found 30/12£638
Wed 31/1218:35DUB - ORD
2 stops25h 35mSWISS
Tue 6/115:45ORD - DUB
2 stops44h 00mSWISS
Deal found 30/12£770
Wed 31/1217:15DUB - ORD
2 stops27h 55mMultiple Airlines
Sun 4/117:20ORD - DUB
1 stop16h 25mMultiple Airlines
Deal found 31/12£773
Wed 31/1217:20DUB - ORD
1 stop25h 50mLufthansa
Sun 4/118:35ORD - DUB
Nonstop7h 35mLufthansa
Deal found 31/12£899
Wed 31/1209:45DUB - MDW
1 stop29h 20mKLM
Tue 6/113:28MDW - DUB
2 stops12h 37mKLM
Deal found 30/12£1,013
Tue 30/1219:00DUB - ORD
2 stops28h 00mBritish Airways
Sat 3/120:40ORD - DUB
1 stop15h 05mBritish Airways
Deal found 30/12£1,142
Tue 30/1205:55DUB - MDW
2 stops16h 25mDelta
Sat 3/111:48MDW - DUB
1 stop13h 57mDelta
Deal found 29/12£1,226
Tue 30/1208:50DUB - ORD
2 stops17h 46mDelta
Sat 3/107:00ORD - DUB
2 stops19h 05mDelta
Deal found 29/12£1,276
Wed 31/1206:00DUB - MDW
2 stops17h 19mDelta
Tue 6/113:28MDW - DUB
2 stops12h 37mDelta
Deal found 30/12£1,406
Wed 31/1217:15DUB - MDW
2 stops30h 04mKLM
Sun 4/109:50MDW - DUB
1 stop15h 55mKLM
Deal found 31/12£1,565

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 1 January 2026.

Round-trip from

£366

One-way from

£363

Popular in

July

Cheapest in

September

Average price

£425

Good round-trip deal

£498 or less

Good one-way deal

£370 or less
Scandinavian Airlines
  • Scandinavian Airlines
  • 14/3-18/3
  • 2 total stops
  • 29h 35m total
  • Ireland to Chicago
Search Deals
Scandinavian Airlines
  • Scandinavian Airlines
  • 30/1
  • 1 total stop
  • 27h 40m total
  • Ireland to Chicago
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (£54 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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 1 January 2026.
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

Thu 5/2

12:30-16:45

1 stop34h 15m

Chicago O'Hare Intl

Mon 9/2

19:20-18:20

1 stop17h 00m

£371

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 13/2

18:55-16:45

2 stops27h 50m

Chicago O'Hare Intl

Fri 20/2

19:20-10:10

2 stops32h 50m

£373

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 4/2

08:50-14:20

1 stop11h 30m

Chicago O'Hare Intl

Tue 17/2

14:25-15:45

2 stops19h 20m

£393

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 12/2

05:55-20:44

2 stops20h 49m

Chicago O'Hare Intl

Mon 16/2

07:00-07:50

2 stops18h 50m

£398

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 17/1

05:55-17:54

2 stops17h 59m

Chicago O'Hare Intl

Fri 23/1

14:25-15:45

2 stops19h 20m

£398

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 15/1

05:55-17:45

2 stops17h 50m

Chicago O'Hare Intl

Thu 22/1

17:20-15:45

1 stop16h 25m

£398

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 12/2

05:55-17:37

2 stops17h 42m

Chicago Midway

Mon 16/2

13:26-15:45

2 stops20h 19m

£398

DublinChicago

DUB - MDW

DUBMDW

Dublin

Sun 1/3

05:55-18:40

2 stops18h 45m

Chicago Midway

Tue 10/3

12:47-07:45

1 stop13h 58m

£400

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 15/1

05:55-17:34

2 stops17h 39m

Chicago Midway

Thu 22/1

09:32-08:45

2 stops17h 13m

£400

DublinChicago

DUB - MDW

DUBMDW

Dublin

Fri 13/2

05:55-18:40

2 stops18h 45m

Chicago Midway

Fri 20/2

09:34-08:45

2 stops17h 11m

£400

Flights are sorted by cheapest return flights first.

Deals found on 31/12

Showing 1-10 of 28 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 £290). Flying from Ireland to Chicago in July is currently the most expensive (average of £473). 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 1 January 2026.

When flying from Ireland to Chicago, 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

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 1 January 2026.

The most flights from IE0 to CHI are scheduled on a Wednesday (13 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

How often are flights from Ireland to Chicago delayed?

About 12% of weekly flights between Ireland and Chicago have experienced delays in the past year, with the average delay time being 140 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 7% 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 1 January 2026.
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
9,128 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,128 reviews
United Airlines
7.4
Good
9,128 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Aer Lingus
7.2
Good
1,418 reviews
United Airlines
7.4
Good
9,128 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Brussels Airlines
7.2
Good
376 reviews
United Airlines
7.4
Good
9,128 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
Icelandair
7.1
Good
593 reviews
United Airlines
7.4
Good
9,128 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
British Airways
6.7
Okay
7,631 reviews
United Airlines
7.4
Good
9,128 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

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 42m. Ireland and Chicago are separated by a distance of 3664 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 Iberia (81%), American Airlines (80%) and British Airways (79%).

  • What are the cheapest flights from Ireland to Chicago?

    The cheapest flight price from Ireland to Chicago is £347. On average you can expect to pay £935. The most popular route, (Dublin - Chicago O'Hare Intl), can usually be booked for £358.

  • 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 £290). Flying from Ireland to Chicago in July is currently the most expensive (average of £473). 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

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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
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London City to O'Hare Intl flights
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Heathrow to Champaign flights
Birmingham to St. Louis flights
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Heathrow to Peoria flights
Edinburgh to St. Louis flights
Glasgow Intl to St. Louis flights
Inverness to O'Hare Intl flights
Manchester to Peoria 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 1 January 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£240Average£339FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£298Average£435FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£315Average£463FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Aer LingusCheapest£343Average£497FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£353Average£621FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£452Average£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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