How long is the flight from Ireland to Chicago?

Departing from Ireland to Chicago will take you 11h 50m. Ireland and Chicago are separated by a distance of 3661 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Chicago ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Chicago, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

What are the cheapest flights from Ireland to Chicago?

The cheapest flight price from Ireland to Chicago is £107. On average you can expect to pay £1,226. The most popular route, (Dublin - Chicago O'Hare Intl), can usually be booked for £334.

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 (88%), Finnair (82%) and American Airlines (78%).

What are the most popular airlines that fly from Ireland to Chicago?

The most popular airlines flying from Ireland to Chicago are Aer Lingus, Finnair and United Airlines. Something to consider prior to booking your flight.

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.

£334+ Cheap Flights from Ireland to Chicago

Cheap flight deals from Ireland to Chicago

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 30 September 2026.

Wed 23/1211:30 -

1 stop11h 50m

Wed 6/118:30 -

1 stop9h 45m

Deal found 26/9£334

Mon 23/1111:30 -

1 stop11h 50m

Sun 29/1118:30 -

1 stop9h 45m

Deal found 25/9£345

Wed 25/1111:30 -

1 stop11h 50m

Sun 29/1118:30 -

1 stop9h 45m

Deal found 25/9£346

Fri 18/1211:30 -

1 stop11h 50m

Wed 30/1218:30 -

1 stop9h 45m

Deal found 25/9£357

Thu 17/1211:30 -

1 stop11h 50m

Mon 28/1218:30 -

1 stop9h 45m

Deal found 25/9£362

Mon 21/1211:30 -

1 stop11h 50m

Wed 30/1218:30 -

1 stop9h 45m

Deal found 25/9£363

Mon 23/1111:30 -

1 stop11h 50m

Sat 30/118:30 -

1 stop9h 45m

Deal found 26/9£364

Wed 2/1211:30 -

1 stop11h 50m

Sun 6/1218:30 -

1 stop9h 45m

Deal found 27/9£365

Tue 10/1105:10 -

1 stop14h 00m

Tue 17/1116:20 -

1 stop12h 40m

Deal found 26/9£373

Thu 5/1105:10 -

1 stop14h 00m

Thu 12/1116:20 -

1 stop18h 10m

Deal found 26/9£373

Wed 11/1107:50 -

1 stop11h 55m

Wed 18/1120:30 -

1 stop14h 15m

Deal found 27/9£444

Fri 2/1012:30 -

2 stops14h 59m

Fri 9/1012:09 -

1 stop16h 06m

Deal found 25/9£458

Find flight deals from Ireland to Chicago

Round-trip from	£334
Popular in	August
Cheapest in	November
Average price	£430
Good round-trip deal	£408 or less
Good one-way deal	£468 or less

Icelandair
23/12-6/1
2 total stops
21h 35m total
Ireland to Chicago

Search Deals

Highest demand for flights based on searches. 12% potential increase in price (£52 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Tue 10/11

16:55-15:30

1 stop28h 35m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£351

ShannonChicago

SNN Shannon - ORD Chicago O'Hare Intl

SNNORD

Shannon

Sat 26/12

07:50-13:45

1 stop11h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£357

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 2/12

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Sun 6/12

18:30-10:15

1 stop9h 45m

£364

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Wed 21/10

10:40-19:14

1 stop14h 34m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£367

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Mon 22/3

05:45-16:37

2 stops15h 52m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£368

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 22/10

10:40-19:14

1 stop14h 34m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£376

ShannonChicago

SNN Shannon - ORD Chicago O'Hare Intl

SNNORD

Shannon

Fri 26/3

07:50-14:45

1 stop11h 55m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£388

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Fri 23/10

10:40-19:00

1 stop14h 20m

Chicago O'Hare Intl

Wed 31/12

00:00-07:00

Nonstop0h 00m

£404

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Mon 16/11

09:00-15:38

1 stop12h 38m

Chicago O'Hare Intl

Mon 23/11

14:21-10:20

1 stop13h 59m

£407

DublinChicago

DUB Dublin - ORD Chicago O'Hare Intl

DUBORD

Dublin

Thu 5/11

09:00-15:38

1 stop12h 38m

Chicago O'Hare Intl

Thu 12/11

15:36-09:55

1 stop12h 19m

£407

Flights are sorted by cheapest return flights first.

Deals found on 25/9

Showing 1-10 of 25 resultsSorted by cheapest first

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.

DUB-ORD

SNN-ORD

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

IE0-CHI

DUB-ORD

SNN-ORD

What is the cheapest month to book a flight from Ireland to Chicago?

Currently, November is the cheapest month in which you can book a flight from Ireland to Chicago (average of £385). Flying from Ireland to Chicago in July is currently the most expensive (average of £632). 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?

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

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 (12 on average).

How often are flights from Ireland to Chicago delayed?

About 10% of weekly flights between Ireland and Chicago have experienced delays in the past year, with the average delay time being 165 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 Saturday 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 71 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

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

7.6

Good

1,432 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jake,Jun 2026

RNO - SEA

Our checked baggage was not transferred correctly so now we are stuck in Budapest with out essential luggage. We are not able to get much help from FinnAir because their service from Seattle is on periodic.

Finnair

7.6

Good

1,432 reviews

Finnair

7.6

Good

1,432 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jake,Jun 2026

RNO - SEA

United Airlines

7.4

Good

10,260 reviews

Finnair

7.6

Good

1,432 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jake,Jun 2026

RNO - SEA

Aer Lingus

7.3

Good

1,800 reviews

Finnair

7.6

Good

1,432 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jake,Jun 2026

RNO - SEA

Brussels Airlines

7.2

Good

433 reviews

Finnair

7.6

Good

1,432 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jake,Jun 2026

RNO - SEA

Lufthansa

6.8

Okay

8,251 reviews

Finnair

7.6

Good

1,432 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Jake,Jun 2026

RNO - SEA

Related info for your journey

How long is the flight from Ireland to Chicago?
Departing from Ireland to Chicago will take you 11h 50m. 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 Alaska Airlines (88%), Finnair (82%) and American Airlines (78%).
What are the cheapest flights from Ireland to Chicago?
The cheapest flight price from Ireland to Chicago is £107. On average you can expect to pay £1,226. The most popular route, (Dublin - Chicago O'Hare Intl), can usually be booked for £334.
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, November is the cheapest month in which you can book a flight from Ireland to Chicago (average of £385). Flying from Ireland to Chicago in July is currently the most expensive (average of £632). 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

Alternative routes

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Complete your trip

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Alternative routes for Ireland to Chicago

Heathrow to O'Hare Intl flights

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Heathrow to Moline flights

Top 6 airlines flying from Ireland to Chicago

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£312	Average£481	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Lufthansa	Cheapest£337	Average£657	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£359	Average£653	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Aer Lingus	Cheapest£380	Average£550	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
JetBlue	Cheapest£458	Average£476	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Finnair	Cheapest£464	Average£672	FlexibilityNo cancel fee	On-time76%	Search Finnair flights

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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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Cheap flights from Ireland to Chicago from £334

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Ireland to Chicago

Cheapest flights from Ireland to ChicagoExplore 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 30 September 2026.

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 30 September 2026.

Best flights from Ireland to ChicagoDiscover carefully curated flight deals from Ireland to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Discover carefully curated flight deals from Ireland to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Direct flights from Ireland to ChicagoExplore direct flight options from Ireland to Chicago based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 September 2026.

Explore direct flight options from Ireland to Chicago based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 September 2026.

Last-minute flights from Ireland to ChicagoDiscover last-minute flight deals from Ireland to Chicago. Data last updated 30 September 2026 and is based on user searches.

Discover last-minute flight deals from Ireland to Chicago. Data last updated 30 September 2026 and is based on user searches.

One-way flights from Ireland to ChicagoSearch for one-way flight options from Ireland to Chicago. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.

Search for one-way flight options from Ireland to Chicago. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.

Find flight deals from Ireland to Chicago

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Use the filters below to find and compare flights from Ireland to Chicago that are best for you.

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.

Cheapflights Insights

What is the cheapest month to book a flight from Ireland to Chicago?

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 30 September 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 30 September 2026.

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 (12 on average).

How often are flights from Ireland to Chicago delayed?

About 10% of weekly flights between Ireland and Chicago have experienced delays in the past year, with the average delay time being 165 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 Saturday 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 71 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

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.

Related info for your journey

How long is the flight from Ireland to Chicago?

What are the most reliable airlines from Ireland to Chicago?

What are the cheapest flights from Ireland to Chicago?

Can I find deals for flights from Ireland to Chicago that include hotel bookings?

How can I find direct flights from Ireland to Chicago?

Can I find deals for business class flights from Ireland to Chicago?

What is the cheapest month to book a flight from Ireland to Chicago?

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.

Other flights to Chicago

Explore flights to Chicago departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 30 September 2026.

Complete your trip

Complete your trip to Chicago by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Illinois

Book a non-stop flight to one of these other cities located in Illinois.

Search flights from Ireland to Chicago by cabin class

Find flights from Ireland to Chicago, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Ireland and Chicago flights

Browse other Ireland and Chicago flight options. Last updated on 30 September 2026.

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Top 6 airlines flying from Ireland to Chicago

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How does Cheapflights help users find flights from Ireland to Chicago?

Why should you use Cheapflights to find cheap flight tickets from Ireland to Chicago?

Can Cheapflights find flights from Ireland to Chicago with no change fees?

Can Cheapflights notify me if prices for flights from Ireland to Chicago become cheaper?

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Travel Smart

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 30 September 2026.

Best flights from Ireland to Chicago
Discover carefully curated flight deals from Ireland to Chicago that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 September 2026.

Direct flights from Ireland to Chicago
Explore direct flight options from Ireland to Chicago based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 September 2026.

Last-minute flights from Ireland to Chicago
Discover last-minute flight deals from Ireland to Chicago. Data last updated 30 September 2026 and is based on user searches.

One-way flights from Ireland to Chicago
Search for one-way flight options from Ireland to Chicago. Find affordable one-way fares based on user searches. Data last updated 30 September 2026.