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Cheap flights from Ireland to Chicago from £234

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 13/5. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — CHI
11 May — 18 May1
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 11 April 2026.

Thu 7/510:40
DUB
-
ORD
1 stop16h 13m
JetBlue
Mon 1/620:30
ORD
-
DUB
1 stop29h 50m
JetBlue
Deal found 8/4£428
Thu 21/510:40
DUB
-
ORD
1 stop27h 20m
JetBlue
Sat 30/510:45
ORD
-
DUB
1 stop16h 15m
JetBlue
Deal found 6/4£429
Tue 24/1110:00
DUB
-
ORD
1 stop14h 50m
Multiple Airlines
Sat 5/1220:40
ORD
-
DUB
1 stop11h 35m
Multiple Airlines
Deal found 8/4£429
Fri 1/511:30
DUB
-
ORD
1 stop26h 11m
JetBlue
Sun 10/506:00
ORD
-
DUB
1 stop20h 20m
JetBlue
Deal found 10/4£432
Thu 7/510:40
DUB
-
ORD
1 stop16h 13m
JetBlue
Thu 14/509:49
ORD
-
DUB
1 stop16h 31m
JetBlue
Deal found 6/4£434
Mon 4/510:40
DUB
-
ORD
1 stop16h 56m
JetBlue
Mon 11/509:49
ORD
-
DUB
1 stop16h 31m
JetBlue
Deal found 7/4£435
Fri 8/511:30
DUB
-
ORD
1 stop26h 14m
JetBlue
Sun 17/506:00
ORD
-
DUB
1 stop20h 20m
JetBlue
Deal found 10/4£439
Fri 1/510:40
DUB
-
ORD
1 stop16h 56m
JetBlue
Wed 6/509:49
ORD
-
DUB
1 stop16h 31m
JetBlue
Deal found 9/4£440
Tue 21/414:15
DUB
-
ORD
1 stop10h 00m
Icelandair
Sun 26/419:25
ORD
-
DUB
1 stop11h 50m
Icelandair
Deal found 7/4£443
Wed 22/412:15
DUB
-
ORD
1 stop12h 00m
Icelandair
Sun 26/419:25
ORD
-
DUB
1 stop11h 50m
Icelandair
Deal found 8/4£443
Sat 2/508:55
DUB
-
MDW
2 stops15h 41m
Delta
Mon 11/512:53
MDW
-
DUB
1 stop13h 52m
Delta
Deal found 6/4£494
Fri 22/505:55
DUB
-
MDW
2 stops18h 38m
Delta
Fri 29/509:22
MDW
-
DUB
1 stop17h 53m
Delta
Deal found 7/4£495

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 11 April 2026.

Round-trip from

£428

One-way from

£234

Popular in

August

Cheapest in

September

Average price

£466

Good round-trip deal

£562 or less

Good one-way deal

£497 or less
JetBlue
  • JetBlue
  • 7/5-1/6
  • 2 total stops
  • 46h 03m total
  • Ireland to Chicago
Search Deals
JetBlue
  • JetBlue
  • 13/5
  • 1 total stop
  • 26h 14m total
  • Ireland to Chicago
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£28 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 11 April 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
Fastest return journey

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 15/5

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Mon 18/5

22:25-11:50

Nonstop7h 25m

£469

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 22/5

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Sun 24/5

22:20-11:50

Nonstop7h 30m

£469

DublinChicago

DUB - MDW

DUBMDW

Dublin

Sat 2/5

08:55-18:36

2 stops15h 41m

Chicago Midway

Mon 11/5

12:53-10:00

2 stops15h 07m

£494

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 21/5

05:55-20:14

2 stops20h 19m

Chicago O'Hare Intl

Sat 30/5

11:09-10:00

1 stop16h 51m

£495

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 7/5

08:55-17:56

2 stops15h 01m

Chicago Midway

Thu 14/5

10:59-09:15

2 stops16h 16m

£495

DublinChicago

DUB - MDW

DUBMDW

Dublin

Thu 7/5

05:55-17:56

2 stops18h 01m

Chicago Midway

Mon 1/6

13:59-07:55

1 stop11h 56m

£495

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 25/5

05:55-18:05

2 stops18h 10m

Chicago O'Hare Intl

Mon 1/6

15:50-10:45

1 stop12h 55m

£500

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 22/5

19:05-16:10

1 stop27h 05m

Chicago O'Hare Intl

Sun 24/5

19:15-18:20

1 stop17h 05m

£516

DublinChicago

DUB - MDW

DUBMDW

Dublin

Wed 22/4

05:55-17:58

2 stops18h 03m

Chicago Midway

Sun 26/4

13:24-09:15

2 stops13h 51m

£538

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 1/5

05:55-16:18

2 stops16h 23m

Chicago O'Hare Intl

Sun 10/5

14:00-10:00

1 stop14h 00m

£543

Flights are sorted by cheapest return flights first.

Deals found on 6/4

Showing 1-10 of 32 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, March is the cheapest month in which you can book a flight from Ireland to Chicago (average of £303). 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 11 April 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 11 April 2026.

The most flights from IE0 to CHI are scheduled on a Thursday (14 on average). You will have fewer flight options on Monday, 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 138 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.

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 11 April 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
1,385 reviews
Check prices

Food

6.7

Crew

8.2

Overall

7.7

Entertainment

6.9

Comfort

7.5

Boarding

7.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
Finnair
7.7
Good
1,385 reviews
Finnair
7.7
Good
1,385 reviews
Check prices

Food

6.7

Crew

8.2

Overall

7.7

Entertainment

6.9

Comfort

7.5

Boarding

7.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
United Airlines
7.4
Good
9,574 reviews
Finnair
7.7
Good
1,385 reviews
Check prices

Food

6.7

Crew

8.2

Overall

7.7

Entertainment

6.9

Comfort

7.5

Boarding

7.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
Aer Lingus
7.2
Good
1,503 reviews
Finnair
7.7
Good
1,385 reviews
Check prices

Food

6.7

Crew

8.2

Overall

7.7

Entertainment

6.9

Comfort

7.5

Boarding

7.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
Brussels Airlines
7.2
Good
400 reviews
Finnair
7.7
Good
1,385 reviews
Check prices

Food

6.7

Crew

8.2

Overall

7.7

Entertainment

6.9

Comfort

7.5

Boarding

7.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.
Icelandair
7.0
Good
632 reviews
Finnair
7.7
Good
1,385 reviews
Check prices

Food

6.7

Crew

8.2

Overall

7.7

Entertainment

6.9

Comfort

7.5

Boarding

7.7

Reviews

1 / 20
6.0
Good

Firuz,Feb 2026

FRA - HEL

Positive: Simple and quick check-in. It was refreshingly easy and polite check-in and boarding staff. Negative: We were delayed, and there was no communication. I am surprised that with an airline like Finnair, you do not get any snacks on a 2.5h flight. The flights are not as cheap as Ryanair, so a bit more service would be appreciated. The crew did not specify which drink was free and which was available for payment, as there was no menu at my seat.

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. 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 (87%), Austrian Airlines (87%) and Brussels Airlines (87%).

  • What are the cheapest flights from Ireland to Chicago?

    The cheapest flight price from Ireland to Chicago is £393. On average you can expect to pay £1,066. The most popular route, (Dublin - Chicago O'Hare Intl), can usually be booked for £491.

  • 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, March is the cheapest month in which you can book a flight from Ireland to Chicago (average of £303). 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

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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
Stansted to O'Hare Intl flights
Gatwick to O'Hare Intl flights
Heathrow to Midway flights
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Manchester to O'Hare Intl flights
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Heathrow to St. Louis flights
Manchester to Midway flights
Gatwick to Midway flights
Birmingham to O'Hare Intl flights
Glasgow Intl to O'Hare Intl flights
Gatwick to St. Louis flights
Edinburgh to Midway flights
Leeds to O'Hare Intl flights
Glasgow Intl to Midway flights
Stansted to St. Louis flights
Birmingham to Midway flights
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London City to St. Louis flights
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Newcastle upon Tyne to O'Hare Intl flights
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Heathrow to Peoria flights
Frederic Chopin to O'Hare Intl flights
Newcastle upon Tyne to Midway flights
Exeter to O'Hare Intl flights
Edinburgh to St. Louis flights
Grimsby to O'Hare Intl flights
Belfast Intl to O'Hare Intl flights
Cardiff to Midway flights
London City to Midway flights
Newquay to O'Hare Intl flights
Belfast City to O'Hare Intl flights
Heathrow to Champaign flights
Madrid to O'Hare Intl flights
Liverpool to O'Hare Intl flights
Heathrow to Moline flights
Bristol to Midway flights
Dublin to Midway flights
Southend to O'Hare Intl flights
Barcelona-El Prat to O'Hare Intl flights
Athens to O'Hare Intl 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 11 April 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£297Average£338FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
FinnairCheapest£323Average£571FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Aer LingusCheapest£344Average£513FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£353Average£641FlexibilityNo cancel feeOn-time69%
Search United 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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