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Cheap flights from Ireland to Chicago from €345

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to Chicago departing on 6/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Recent return flight deals from Ireland to Chicago

Enter your travel dates to find the best prices.
Scandinavian Airlines Logo
10:10 - 16:45
DUB
-
ORD
12h 35m1 stop
Scandinavian Airlines Logo
20:20 - 10:45
ORD
-
DUB
33h 25m2 stops
€401Scandinavian Airlines
Sun, 1 Mar - Wed, 11 Mar
Scandinavian Airlines Logo
19:05 - 16:45
DUB
-
ORD
27h 40m1 stop
Scandinavian Airlines Logo
19:20 - 18:20
ORD
-
DUB
17h 00m1 stop
€402Scandinavian Airlines
Fri, 6 Feb - Wed, 18 Feb
Icelandair Logo
12:15 - 21:40
DUB
-
ORD
15h 25m1 stop
Icelandair Logo
22:40 - 13:15
ORD
-
DUB
32h 35m1 stop
€406Icelandair
Wed, 27 May - Tue, 9 Jun
Icelandair Logo
12:15 - 18:15
DUB
-
ORD
12h 00m1 stop
Icelandair Logo
19:25 - 11:05
ORD
-
DUB
9h 40m1 stop
€415Icelandair
Wed, 27 May - Thu, 11 Jun
Multiple Airlines Logo
06:00 - 14:20
ORK
-
ORD
14h 20m1 stop
Multiple Airlines Logo
17:35 - 14:45
ORD
-
ORK
15h 10m2 stops
€497Multiple Airlines
Fri, 16 Jan - Thu, 22 Jan
Multiple Airlines Logo
06:00 - 17:55
ORK
-
ORD
17h 55m2 stops
Multiple Airlines Logo
17:35 - 14:45
ORD
-
ORK
15h 10m2 stops
€502Multiple Airlines
Fri, 16 Jan - Thu, 22 Jan
British Airways Logo
07:50 - 17:00
SNN
-
ORD
15h 10m1 stop
British Airways Logo
18:45 - 11:30
ORD
-
SNN
10h 45m1 stop
€513British Airways
Mon, 19 Jan - Mon, 26 Jan
British Airways Logo
07:50 - 17:00
SNN
-
ORD
15h 10m1 stop
British Airways Logo
18:45 - 16:45
ORD
-
SNN
16h 00m1 stop
€514British Airways
Tue, 20 Jan - Tue, 27 Jan
American Airlines Logo
07:50 - 15:25
SNN
-
ORD
13h 35m1 stop
American Airlines Logo
18:25 - 11:30
ORD
-
SNN
11h 05m1 stop
€645American Airlines
Thu, 15 Jan - Mon, 19 Jan
American Airlines Logo
11:55 - 18:45
ORK
-
ORD
12h 50m1 stop
American Airlines Logo
21:45 - 11:10
ORD
-
ORK
31h 25m1 stop
€647American Airlines
Wed, 11 Feb - Sun, 15 Feb

United Airlines flights from Ireland to Chicago O'Hare Intl Airport

Our best United Airlines deals on Ireland to Chicago O'Hare Intl Airport flight tickets
United Airlines
14 Dec
DUB09:00Dublin
12h 10m
1 stop
ORD15:10Chicago O'Hare Intl
23 Dec
ORD18:35Chicago O'Hare Intl
7h 35m
DUB08:10Dublin
€581
Find similar
United Airlines
14 Dec
DUB10:40Dublin
8h 50m
ORD13:30Chicago O'Hare Intl
23 Dec
ORD18:35Chicago O'Hare Intl
7h 35m
DUB08:10Dublin
€584
Find similar
United Airlines
14 Dec
DUB10:40Dublin
8h 50m
ORD13:30Chicago O'Hare Intl
23 Dec
ORD18:35Chicago O'Hare Intl
7h 35m
DUB08:10Dublin
€585
Find similar

Icelandair flights from Ireland to Chicago O'Hare Intl Airport

Our best Icelandair deals on Ireland to Chicago O'Hare Intl Airport flight tickets
Icelandair
27 May
DUB12:15Dublin
15h 25m
1 stop
ORD21:40Chicago O'Hare Intl
9 Jun
ORD22:40Chicago O'Hare Intl
32h 35m
1 stop
DUB13:15Dublin
€406
Find similar
Icelandair
27 May
DUB12:15Dublin
12h 00m
1 stop
ORD18:15Chicago O'Hare Intl
11 Jun
ORD19:25Chicago O'Hare Intl
9h 40m
1 stop
DUB11:05Dublin
€415
Find similar
Icelandair
22 Apr
DUB12:15Dublin
12h 00m
1 stop
ORD18:15Chicago O'Hare Intl
26 Apr
ORD19:25Chicago O'Hare Intl
11h 50m
1 stop
DUB13:15Dublin
€416
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Ireland to Chicago O'Hare Intl Airport 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, momondo users made 13,528 searches. Data last updated 7 December 2025.
Use the filters below to find and compare flights from Ireland to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 1/3

10:10-16:45

1 stop12h 35m

Chicago O'Hare Intl

Wed 11/3

20:20-10:45

2 stops33h 25m

€401

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 6/2

19:05-16:45

1 stop27h 40m

Chicago O'Hare Intl

Wed 18/2

19:20-18:20

1 stop17h 00m

€402

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 27/5

12:15-21:40

1 stop15h 25m

Chicago O'Hare Intl

Tue 9/6

22:40-13:15

1 stop32h 35m

€406

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 27/5

12:15-18:15

1 stop12h 00m

Chicago O'Hare Intl

Thu 11/6

19:25-11:05

1 stop9h 40m

€415

CorkChicago

ORK - ORD

ORKORD

Cork

Fri 16/1

06:00-14:20

1 stop14h 20m

Chicago O'Hare Intl

Thu 22/1

17:35-14:45

2 stops15h 10m

€497

CorkChicago

ORK - ORD

ORKORD

Cork

Fri 16/1

06:00-17:55

2 stops17h 55m

Chicago O'Hare Intl

Thu 22/1

17:35-14:45

2 stops15h 10m

€502

ShannonChicago

SNN - ORD

SNNORD

Shannon

Mon 19/1

07:50-17:00

1 stop15h 10m

Chicago O'Hare Intl

Mon 26/1

18:45-11:30

1 stop10h 45m

€513

ShannonChicago

SNN - ORD

SNNORD

Shannon

Tue 20/1

07:50-17:00

1 stop15h 10m

Chicago O'Hare Intl

Tue 27/1

18:45-16:45

1 stop16h 00m

€514

ShannonChicago

SNN - ORD

SNNORD

Shannon

Thu 15/1

07:50-15:25

1 stop13h 35m

Chicago O'Hare Intl

Mon 19/1

18:25-11:30

1 stop11h 05m

€645

CorkChicago

ORK - ORD

ORKORD

Cork

Wed 11/2

11:55-18:45

1 stop12h 50m

Chicago O'Hare Intl

Sun 15/2

21:45-11:10

1 stop31h 25m

€647

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Chicago from

How to get the cheapest flight ticket from Ireland to Chicago O'Hare Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

In general, November is the cheapest month to fly from Ireland to Chicago O'Hare Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around €419. If you are unable to visit Chicago O'Hare Intl Airport during the month of November, then departing from Ireland during the month September is also very affordable. Most momondo users find prices during this month for around €420.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

On average, the least expensive day to fly to Chicago O'Hare Intl Airport from Ireland is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as €633. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Chicago O'Hare Intl Airport is Tuesday, with ticket prices averaging around €737.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Our data shows that the cheapest Ireland to Chicago O'Hare Intl Airport flights are usually those with departure times in the evening. Our users have found flights to Chicago O'Hare Intl Airport in the evening for as low as €520. Flights to Chicago O'Hare Intl Airport are more costly at midday, with an average ticket price of €673. Departure times at midday fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Ireland to Chicago O'Hare Intl flight route?

Fly from Dublin to Chicago O'Hare Intl for the best Ireland - Chicago O'Hare Intl flight prices

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around €518 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Ireland for as low as €465 on momondo.

What cabin class options are available on Ireland to Chicago O'Hare Intl flights?

There are 3 cabin classes available to choose from on Ireland to Chicago O'Hare Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Ireland to Chicago O'Hare Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Ireland to Chicago O'Hare Intl Airport.

Cheap Ireland to Chicago O'Hare Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to Chicago O'Hare Intl Airport

Best price found

€391

Fastest flight time

8h 05m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Ireland in the past 72 hours is €391. The best return flight deal from Ireland to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is €505.
The fastest flight from Ireland to Chicago O'Hare Intl Airport takes 8h 05m
Direct flights go from Ireland to Chicago O'Hare Intl Airport every day.
Search flight deals

  • When did momondo last update prices for flights from Ireland to Chicago O'Hare Intl Airport?

    Prices for flights from Ireland to Chicago O'Hare Intl Airport refresh daily.

  • How many operators does momondo search for flights from Ireland to Chicago O'Hare Intl Airport?

  • How old do you have to be to fly from Ireland to Chicago O'Hare Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ireland to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The necessary travel and health documents for your Chicago O'Hare Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Ireland to Chicago O'Hare Intl Airport?

Best airlines flying from Ireland to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Ireland to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom €380Free CancellationRating
7.0
586 reviews
Search Icelandair flights
Aer LingusPriceFrom €389Free CancellationRating
7.2
1,389 reviews
Search Aer Lingus flights
United AirlinesPriceFrom €398Free CancellationRating
7.4
9,072 reviews
Search United Airlines flights
British AirwaysPriceFrom €400Free CancellationRating
6.7
7,563 reviews
Search British Airways flights
American AirlinesPriceFrom €512Free CancellationRating
7.2
11,046 reviews
Search American Airlines flights

Travelling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Rosemont
Oakbrook Terrace
Elk Grove Village
Crystal Lake

Why use momondo?

Why should I use momondo to find a flight deal from Ireland to Chicago?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ireland to Chicago . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ireland to Chicago with flexible booking policies on momondo?

Yes. All flights to Chicago from Ireland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ireland to Chicago?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ireland to Chicago.

I’m not ready to book a flight from Ireland to Chicago right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ireland to Chicago now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Chicago and let you know when they change.

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