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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 27/8. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — CHI
9 Jul — 16 Jul1
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 9 June 2026.

Sun 27/908:35
DUB
-
ORD
2 stops18h 37m
British Airways
Sat 3/1013:35
ORD
-
DUB
2 stops14h 05m
British Airways
Deal found 6/6£468
Sun 14/609:30
DUB
-
ORD
Nonstop8h 00m
Multiple Airlines
Sun 21/612:00
ORD
-
DUB
1 stop15h 35m
Multiple Airlines
Deal found 7/6£469
Fri 12/613:45
DUB
-
ORD
1 stop11h 41m
Finnair
Thu 18/622:20
ORD
-
DUB
Nonstop7h 30m
Finnair
Deal found 5/6£470
Mon 13/710:40
DUB
-
ORD
1 stop14h 35m
JetBlue
Mon 5/1013:00
ORD
-
DUB
1 stop14h 00m
JetBlue
Deal found 5/6£471
Wed 23/911:35
DUB
-
ORD
Nonstop8h 25m
Aer Lingus
Fri 2/1021:00
ORD
-
DUB
Nonstop7h 35m
Aer Lingus
Deal found 8/6£472
Mon 31/809:30
DUB
-
ORD
Nonstop8h 00m
American Airlines
Fri 25/916:45
ORD
-
DUB
1 stop10h 50m
American Airlines
Deal found 8/6£472
Fri 12/611:45
DUB
-
ORD
1 stop15h 47m
British Airways
Sun 14/606:29
ORD
-
DUB
1 stop21h 06m
British Airways
Deal found 5/6£473
Fri 9/1011:45
DUB
-
ORD
1 stop13h 26m
Finnair
Mon 12/1012:04
ORD
-
DUB
1 stop15h 41m
Finnair
Deal found 8/6£474
Fri 3/710:40
DUB
-
ORD
1 stop14h 45m
JetBlue
Thu 6/810:56
ORD
-
DUB
1 stop15h 24m
JetBlue
Deal found 5/6£475
Wed 15/710:40
DUB
-
ORD
1 stop14h 35m
JetBlue
Wed 7/1014:15
ORD
-
DUB
1 stop12h 05m
JetBlue
Deal found 8/6£475
Sun 30/813:45
DUB
-
ORD
1 stop15h 15m
American Airlines
Thu 1/1013:15
ORD
-
DUB
1 stop11h 15m
American Airlines
Deal found 7/6£477
Thu 25/610:40
DUB
-
ORD
1 stop14h 45m
JetBlue
Thu 9/709:40
ORD
-
DUB
1 stop17h 20m
JetBlue
Deal found 6/6£478

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 9 June 2026.

Round-trip from

£468

One-way from

£363

Popular in

August

Cheapest in

November

Average price

£506

Good round-trip deal

£599 or less

Good one-way deal

£496 or less
British Airways
  • British Airways
  • 27/9-3/10
  • 3 total stops
  • 29h 47m total
  • Ireland to Chicago
Search Deals
WestJet
  • WestJet
  • 27/8
  • 2 total stops
  • 29h 19m total
  • Ireland to Chicago
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£48 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 9 June 2026.
Use the filters below to find and compare flights from Ireland to Chicago that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 2/9

11:40-16:10

2 stops34h 30m

Chicago O'Hare Intl

Wed 30/9

19:15-10:25

2 stops33h 10m

£520

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 5/11

10:40-13:20

Nonstop8h 40m

Chicago O'Hare Intl

Mon 9/11

18:30-08:10

Nonstop7h 40m

£541

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 23/9

11:40-16:10

2 stops34h 30m

Chicago O'Hare Intl

Fri 2/10

19:15-09:15

2 stops32h 00m

£548

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 10/7

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Thu 16/7

16:30-14:30

2 stops16h 00m

£549

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 7/7

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Thu 16/7

16:30-14:30

2 stops16h 00m

£549

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 8/7

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Tue 21/7

17:00-18:50

1 stop19h 50m

£549

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 3/8

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Mon 10/8

21:15-18:40

1 stop15h 25m

£550
Fastest return journey

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 3/8

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Mon 10/8

22:20-11:50

Nonstop7h 30m

£551

DublinChicago

DUB - MDW

DUBMDW

Dublin

Wed 23/9

08:55-18:11

2 stops15h 16m

Chicago Midway

Fri 2/10

09:49-07:55

1 stop16h 06m

£574

DublinChicago

DUB - MDW

DUBMDW

Dublin

Mon 3/8

05:55-18:33

2 stops18h 38m

Chicago Midway

Mon 10/8

13:27-10:00

1 stop14h 33m

£665

Flights are sorted by cheapest return flights first.

Deals found on 6/6

Showing 1-10 of 33 resultsSorted by cheapest first
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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, September is the cheapest month in which you can book a flight from Ireland to Chicago (average of £203). Flying from Ireland to Chicago in July is currently the most expensive (average of £398). 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 9 June 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 9 June 2026.

The most flights from IE0 to CHI are scheduled on a Monday (19 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (12 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 143 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?

Monday 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.

How far ahead should I book a flight from Ireland to Chicago?

Booking 49 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ireland to Chicago. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 9 June 2026.
Check out reviews from past customers who have flown with Finnair,United Airlines, andAer Lingus 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.
Finnair
7.7
Good
1,405 reviews
Check prices

Comfort

7.4

Boarding

7.7

Entertainment

6.9

Crew

8.2

Overall

7.7

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.
Finnair
7.7
Good
1,405 reviews
Finnair
7.7
Good
1,405 reviews
Check prices

Comfort

7.4

Boarding

7.7

Entertainment

6.9

Crew

8.2

Overall

7.7

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.
United Airlines
7.4
Good
9,801 reviews
Finnair
7.7
Good
1,405 reviews
Check prices

Comfort

7.4

Boarding

7.7

Entertainment

6.9

Crew

8.2

Overall

7.7

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.
Aer Lingus
7.3
Good
1,599 reviews
Finnair
7.7
Good
1,405 reviews
Check prices

Comfort

7.4

Boarding

7.7

Entertainment

6.9

Crew

8.2

Overall

7.7

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.
Brussels Airlines
7.2
Good
411 reviews
Finnair
7.7
Good
1,405 reviews
Check prices

Comfort

7.4

Boarding

7.7

Entertainment

6.9

Crew

8.2

Overall

7.7

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.
Icelandair
7.0
Good
670 reviews
Finnair
7.7
Good
1,405 reviews
Check prices

Comfort

7.4

Boarding

7.7

Entertainment

6.9

Crew

8.2

Overall

7.7

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2026

LAX - HEL

All crew members are really nice behavior. Devdutt also nice person.

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 8h 40m. 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 British Airways (80%).

  • What are the cheapest flights from Ireland to Chicago?

    The cheapest flight price from Ireland to Chicago is £385. On average you can expect to pay £587. The most popular route, (Dublin - Chicago O'Hare Intl), can usually be booked for £436.

  • 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, September is the cheapest month in which you can book a flight from Ireland to Chicago (average of £203). Flying from Ireland to Chicago in July is currently the most expensive (average of £398). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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
Stansted to O'Hare Intl flights
London City to O'Hare Intl flights
Heathrow to Midway flights
Luton to O'Hare Intl flights
Heathrow to St. Louis flights
Manchester to O'Hare Intl flights
Manchester to Midway flights
Edinburgh to O'Hare Intl flights
Stansted to St. Louis flights
Birmingham to O'Hare Intl flights
Gatwick to St. Louis flights
Birmingham to Midway flights
Gatwick to Midway flights
Liverpool to O'Hare Intl flights
Manchester to St. Louis flights
Edinburgh to Midway flights
London City to St. Louis flights
Glasgow Intl to O'Hare Intl flights
Leeds to O'Hare Intl flights
Glasgow Intl to Midway flights
Belfast Intl to O'Hare Intl flights
Dublin to O'Hare Intl flights
Luton to St. Louis flights
Southampton to O'Hare Intl flights
Edinburgh to St. Louis flights
Belfast City to O'Hare Intl flights
Bristol to O'Hare Intl flights
Dublin to Midway flights
Newcastle upon Tyne to O'Hare Intl flights
Cardiff to O'Hare Intl flights
Cardiff to Midway flights
Heathrow to Peoria flights
Vienna to O'Hare Intl flights
Bruxelles-National to O'Hare Intl flights
Leeds to Midway flights
London City to Midway flights
Newcastle upon Tyne to Midway flights
Bristol to Midway flights
Southend to O'Hare Intl flights
Newquay to O'Hare Intl flights
Heathrow to Champaign flights
Glasgow Intl to St. Louis flights
Birmingham to St. Louis flights
London City to Peoria flights
Glasgow Intl to Moline flights

Top 4 airlines flying from Ireland to Chicago

Discover the top 4 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 9 June 2026.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest£333Average£652FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Aer LingusCheapest£345Average£537FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£355Average£646FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£461Average£665FlexibilityNo cancel feeOn-time76%
Search Finnair 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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