Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Ireland to Chicago from £306

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 14/5. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — CHI
19 Feb — 26 Feb1
1 adult
1 adult, Economy, 0 bags

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 January 2026.

Round-trip from

£319

One-way from

£306

Popular in

July

Cheapest in

November

Average price

£440

Good round-trip deal

£464 or less

Good one-way deal

£257 or less
10/6-7/9
  • 10/6-7/9
  • 1 total stop
  • 19h 15m total
  • Ireland to Chicago
Search Deals
Finnair
  • Finnair
  • 14/5
  • Nonstop
  • 8h 00m total
  • Ireland to Chicago
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£50 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 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

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 January 2026.

Wed 10/609:30
DUB
-
ORD
Nonstop8h 00m
Multiple Airlines
Mon 7/921:15
ORD
-
DUB
1 stop11h 15m
Multiple Airlines
Deal found 18/1£319
Wed 13/509:30
DUB
-
ORD
Nonstop8h 00m
Finnair
Tue 26/522:25
ORD
-
DUB
Nonstop7h 25m
Finnair
Deal found 19/1£325
Fri 15/509:30
DUB
-
ORD
Nonstop8h 00m
Finnair
Mon 25/522:25
ORD
-
DUB
Nonstop7h 25m
Finnair
Deal found 19/1£326
Tue 5/508:35
DUB
-
ORD
1 stop12h 25m
Multiple Airlines
Fri 15/522:25
ORD
-
DUB
Nonstop7h 25m
Multiple Airlines
Deal found 19/1£331
Thu 16/409:30
DUB
-
ORD
1 stop16h 25m
Multiple Airlines
Wed 22/421:15
ORD
-
DUB
1 stop11h 20m
Multiple Airlines
Deal found 19/1£333
Wed 13/508:35
DUB
-
ORD
1 stop12h 20m
Multiple Airlines
Tue 26/518:10
ORD
-
DUB
1 stop11h 55m
Multiple Airlines
Deal found 19/1£342
Tue 31/310:30
DUB
-
ORD
1 stop13h 05m
Multiple Airlines
Tue 7/422:35
ORD
-
DUB
1 stop14h 15m
Multiple Airlines
Deal found 19/1£343
Wed 22/409:30
DUB
-
ORD
1 stop16h 25m
Finnair
Sun 26/412:30
ORD
-
DUB
1 stop15h 15m
Finnair
Deal found 19/1£349
Wed 1/408:35
DUB
-
ORD
1 stop15h 00m
Multiple Airlines
Mon 6/421:15
ORD
-
DUB
1 stop15h 25m
Multiple Airlines
Deal found 19/1£359
Wed 4/311:30
DUB
-
ORD
2 stops35h 15m
Scandinavian Airlines
Wed 11/320:20
ORD
-
DUB
1 stop17h 00m
Scandinavian Airlines
Deal found 18/1£361
Mon 2/308:50
DUB
-
ORD
1 stop12h 35m
British Airways
Sun 8/322:45
ORD
-
DUB
1 stop10h 35m
British Airways
Deal found 19/1£365
Thu 5/205:55
DUB
-
MDW
2 stops18h 00m
Delta
Tue 10/213:26
MDW
-
DUB
2 stops20h 19m
Delta
Deal found 19/1£388

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 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

Wed 10/6

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Mon 7/9

21:15-14:30

1 stop11h 15m

£319

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 10/6

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Mon 7/9

22:30-11:50

Nonstop7h 20m

£325

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 31/3

10:30-18:15

1 stop13h 45m

Chicago O'Hare Intl

Tue 7/4

22:35-18:50

1 stop14h 15m

£343

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 22/4

09:30-19:55

1 stop16h 25m

Chicago O'Hare Intl

Sun 26/4

12:30-09:45

1 stop15h 15m

£349

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 28/2

05:10-15:20

1 stop16h 10m

Chicago O'Hare Intl

Sun 8/3

19:35-08:10

Nonstop7h 35m

£380

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 5/2

13:25-14:20

1 stop30h 55m

Chicago O'Hare Intl

Tue 10/2

10:29-07:50

2 stops15h 21m

£384

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 1/2

08:50-22:44

2 stops19h 54m

Chicago O'Hare Intl

Sat 7/2

10:29-07:50

2 stops15h 21m

£388

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 2/3

05:55-18:01

2 stops18h 06m

Chicago O'Hare Intl

Sun 8/3

19:14-15:45

2 stops15h 31m

£388

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 3/2

05:55-17:55

2 stops18h 00m

Chicago O'Hare Intl

Sun 8/2

17:20-15:45

1 stop16h 25m

£388

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 5/2

05:55-17:55

2 stops18h 00m

Chicago O'Hare Intl

Tue 10/2

07:00-07:50

2 stops18h 50m

£388

Flights are sorted by cheapest return flights first.

Deals found on 18/1

Showing 1-10 of 34 results
1
2
3
4

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 £298). 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 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 20 January 2026.

The most flights from IE0 to CHI are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 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 132 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 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 20 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
9,186 reviews
Check prices

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,186 reviews
United Airlines
7.4
Good
9,186 reviews
Check prices

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Aer Lingus
7.2
Good
1,437 reviews
United Airlines
7.4
Good
9,186 reviews
Check prices

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Brussels Airlines
7.2
Good
382 reviews
United Airlines
7.4
Good
9,186 reviews
Check prices

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Icelandair
7.1
Good
602 reviews
United Airlines
7.4
Good
9,186 reviews
Check prices

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,690 reviews
United Airlines
7.4
Good
9,186 reviews
Check prices

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 (84%), Austrian Airlines (83%) and Brussels Airlines (83%).

  • What are the cheapest flights from Ireland to Chicago?

    The cheapest flight price from Ireland to Chicago is £256. On average you can expect to pay £904. The most popular route, (Dublin - Chicago O'Hare Intl), can usually be booked for £444.

  • 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 £298). 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

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
Heathrow to Midway flights
London City to O'Hare Intl flights
Stansted to O'Hare Intl flights
Luton to O'Hare Intl flights
Edinburgh to O'Hare Intl flights
Manchester to O'Hare Intl flights
Heathrow to St. Louis flights
Edinburgh to Midway flights
Manchester to Midway flights
Gatwick to Midway flights
Birmingham to O'Hare Intl flights
Gatwick to St. Louis flights
Glasgow Intl to O'Hare Intl flights
Newcastle upon Tyne to O'Hare Intl flights
Stansted to St. Louis flights
London City to St. Louis flights
Southampton to O'Hare Intl flights
Birmingham to Midway flights
Glasgow Intl to Midway flights
Norwich to O'Hare Intl flights
Luton to St. Louis flights
Leeds to O'Hare Intl flights
Belfast Intl to O'Hare Intl flights
London City to Midway flights
Amsterdam to O'Hare Intl flights
Belfast City to O'Hare Intl flights
Bristol to O'Hare Intl flights
Newcastle upon Tyne to Midway flights
Liverpool to O'Hare Intl flights
Inverness to O'Hare Intl flights
Cardiff to O'Hare Intl flights
Heathrow to Champaign flights
Manchester to St. Louis flights
Manchester to Peoria flights
Bruxelles-National to O'Hare Intl flights
Gatwick to Champaign flights
Edinburgh to Moline flights
Bristol to Midway flights
Glasgow Intl to St. Louis flights
Athens to O'Hare Intl flights
Heathrow to Peoria flights
Manchester to Moline flights
Birmingham to St. Louis flights
Southend to O'Hare Intl flights
Leeds to Midway flights
Exeter to O'Hare Intl flights
Dublin 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 January 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£241Average£340FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£299Average£420FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£316Average£447FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Aer LingusCheapest£346Average£489FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£354Average£626FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapest£454Average£505FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.