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Flights to Chicago

€254 Cheap flights to Chicago

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Chicago departing on 15/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Ireland to Chicago

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:15 - 14:15
ORK
-
ORD
14h 00m
1 stop
Multiple Airlines Logo
17:10 - 14:40
ORD
-
ORK
15h 30m
1 stop
€494Multiple Airlines
Thu, 18 Jun - Tue, 23 Jun
Multiple Airlines Logo
06:15 - 14:15
ORK
-
ORD
14h 00m
1 stop
Multiple Airlines Logo
20:20 - 14:40
ORD
-
ORK
12h 20m
1 stop
€496Multiple Airlines
Sat, 23 May - Thu, 28 May
KLM Logo
13:05 - 21:36
SNN
-
ORD
14h 31m
1 stop
KLM Logo
06:05 - 11:10
ORD
-
SNN
23h 05m
1 stop
€509KLM
Mon, 1 Jun - Wed, 10 Jun
Delta Logo
13:05 - 21:36
SNN
-
ORD
14h 31m
1 stop
Delta Logo
06:07 - 11:10
ORD
-
SNN
23h 03m
1 stop
€510Delta
Tue, 26 May - Tue, 2 Jun
Delta Logo
13:05 - 21:48
SNN
-
ORD
14h 43m
1 stop
Delta Logo
18:00 - 11:10
ORD
-
SNN
11h 10m
1 stop
€511Delta
Tue, 23 Jun - Mon, 29 Jun
British Airways Logo
06:30 - 12:30
DUB
-
ORD
12h 00m
1 stop
British Airways Logo
17:10 - 09:50
ORD
-
DUB
10h 40m
1 stop
€520British Airways
Sat, 24 Oct - Sat, 7 Nov
Finnair Logo
09:30 - 11:30
DUB
-
ORD
8h 00mdirect
Finnair Logo
11:50 - 09:45
ORD
-
DUB
15h 55m
1 stop
€522Finnair
Thu, 21 May - Sat, 30 May
Finnair Logo
09:30 - 11:29
DUB
-
ORD
7h 59mdirect
Finnair Logo
22:20 - 11:50
ORD
-
DUB
7h 30mdirect
€525Finnair
Thu, 18 Jun - Thu, 25 Jun
KLM Logo
12:00 - 18:18
DUB
-
MDW
12h 18m
1 stop
KLM Logo
17:59 - 10:00
MDW
-
DUB
10h 01m
1 stop
€534KLM
Wed, 10 Jun - Wed, 9 Sep
British Airways Logo
10:30 - 15:55
DUB
-
ORD
11h 25m
1 stop
British Airways Logo
22:20 - 11:50
ORD
-
DUB
7h 30mdirect
€536British Airways
Thu, 4 Jun - Sun, 7 Jun

momondo Fare Finder

 
Locate flights to Chicago that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 13,528 searches and data was last updated on 9 May 2026.
Use the filters below to find and compare flights to Chicago that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

CorkChicago

ORK - ORD

ORKORD

Cork

Thu 18/6

06:15-14:15

1 stop14h 00m

Chicago O'Hare Intl

Tue 23/6

17:10-14:40

1 stop15h 30m

€494

CorkChicago

ORK - ORD

ORKORD

Cork

Sat 23/5

06:15-14:15

1 stop14h 00m

Chicago O'Hare Intl

Thu 28/5

20:20-14:40

1 stop12h 20m

€496

ShannonChicago

SNN - ORD

SNNORD

Shannon

Mon 1/6

13:05-21:36

1 stop14h 31m

Chicago O'Hare Intl

Wed 10/6

06:05-11:10

1 stop23h 05m

€509

ShannonChicago

SNN - ORD

SNNORD

Shannon

Tue 26/5

13:05-21:36

1 stop14h 31m

Chicago O'Hare Intl

Tue 2/6

06:07-11:10

1 stop23h 03m

€510

ShannonChicago

SNN - ORD

SNNORD

Shannon

Tue 23/6

13:05-21:48

1 stop14h 43m

Chicago O'Hare Intl

Mon 29/6

18:00-11:10

1 stop11h 10m

€511

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 24/10

06:30-12:30

1 stop12h 00m

Chicago O'Hare Intl

Sat 7/11

17:10-09:50

1 stop10h 40m

€520

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 21/5

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Sat 30/5

11:50-09:45

1 stop15h 55m

€522
Fastest return journey

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 18/6

09:30-11:29

Nonstop7h 59m

Chicago O'Hare Intl

Thu 25/6

22:20-11:50

Nonstop7h 30m

€525

DublinChicago

DUB - MDW

DUBMDW

Dublin

Wed 10/6

12:00-18:18

1 stop12h 18m

Chicago Midway

Wed 9/9

17:59-10:00

1 stop10h 01m

€534

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 4/6

10:30-15:55

1 stop11h 25m

Chicago O'Hare Intl

Sun 7/6

22:20-11:50

Nonstop7h 30m

€536

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

Chicago flights insights and trends

Explore insights for your Chicago flight to craft the best travel plan

What is the cheapest month to fly to Chicago?

The cheapest month to fly to Chicago from Ireland is in September. Flight prices, which tend to average around €398, are often lower during this time because this is during the off-season. If you don’t want to visit Chicago in September, then you should wait until November to fly from Ireland, when ticket prices are also cheap, with an average price of €402.

What is the absolute cheapest flight to Chicago?

See prices from:

What is the cheapest day to depart on your flight to Chicago?

On average, the least expensive day to fly to Chicago from Ireland is on a Thursday. momondo users have found tickets for Thursday departures for as low as €606. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Chicago on Sunday is €766.

What is the cheapest time of day to depart on your flight to Chicago?

In the afternoon is the cheapest time of day to fly from Ireland to Chicago when you can find flight prices for as low as €592. Flying to Chicago in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at midday when prices are €708 on average. Flights to Chicago from Ireland at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight to Chicago?

You are more likely to see cheaper flights to Chicago from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago for around €558 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago from Ireland for as low as €411 on momondo.

Cheapest flights to Chicago

Find the cheapest flights to Chicago from your nearest city or airport
Find flights from Dublin to Chicago O'Hare Intl Airport
CHEAPEST MONTH TO FLY TO CHICAGO FROM DUBLINSeptember25% cheaperFlying from Dublin to Chicago costs on average just €398 in September
MOST EXPENSIVE MONTH TO FLY TO CHICAGO FROM DUBLINAugust26% more expensiveIt costs about €662 for flights to Chicago from Dublin in August
MOST POPULAR MONTH TO FLY TO CHICAGO FROM DUBLINOctober417% more users visitedMore momondo users searched in flights to Chicago from Dublin in October than any other month

Cheap Chicago flight deals and tips

Summary info about Chicago flight prices, duration and airlines

Best One-Way Price

€254

Best Round-Trip Price

€494

Fastest flight time

16h 25m

Popular in

August
The best one-way flight price to Chicago from Ireland in the last 72 hours is €254 (Dublin to Chicago O'Hare Intl).
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The best round-trip flight price to Chicago from Ireland in the last 72 hours is €494 (Cork to Chicago O'Hare Intl).
Search Deals
The fastest flight to Chicago from Ireland takes 16h 25m (Dublin to Chicago O'Hare Intl).
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August has the highest demand for flights to Chicago, with a 7% price increase on average.
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Frequently asked questions about flying to Chicago

When is it best to fly to Chicago to go sightseeing?

The city of Chicago has many sights to see while visiting. Many tourists find it ideal to go sightseeing when the weather is warmer, but not blistering. Consider booking your flight to Chicago for May or June, when temperatures are a bit higher and the chance of rain is relatively low. Many travellers find it worthwhile to visit Magnificent Mile and Grant Park.

How far in advance should I book a flight to Chicago?

We recommend purchasing flights from Ireland to Chicago 49 days ahead of your departure date because this is when momondo users tend to see the best flight rates. On average, our users have found flights to Chicago for €524. However, in the past 72 hours, people saw flights from Ireland for as low as €332.

Is there an alternative airport near Chicago?

Finding an alternative and possibly cheaper destination airport near Chicago is possible. If you are planning a flight to Chicago, consider booking flights to Chicago Midway Airport (14 km from Chicago city centre) or Chicago Greater Rockford Airport (126 km from Chicago city centre).

Is there a cheaper alternative to flying into Chicago?

With an average price of €228 per person, Chicago Midway Airport is the cheapest airport to fly into when planning your trip to Chicago. This price can fluctuate based on where you are flying from. momondo’s Airport-to-Airport Pricing Tool can help users find the best prices.

Are there flights to Lincoln Park?

Yes, you can get a flight ticket to Chicago Midway if you want to reach Lincoln Park. It is the nearest Chicago airport (16.9 km away).

What’s the closest airport to McCormick Place?

The closest airport to McCormick Place is 12.7 km away - Chicago’s Chicago Midway airport.

When did momondo last update prices for flights to Chicago?

Prices for flights to Chicago are refreshed on a daily basis.

How many operators does momondo search for flights to Chicago?

As of May 2026, there are 6 operators available to choose from for flights to Chicago.

How old do you have to be to fly to Chicago?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel to Chicago.

What documentation or ID do you need to fly to Chicago?

The travel and health documents required for your trip to Chicago can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Chicago. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

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

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

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

How can momondo help me find flights to Chicago?

Once you have performed a search for flights to Chicago, momondo helps you find the right flight by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to Chicago

Popular Flights to Chicago

Popular routes according to searches in the past day on momondo
Dublin to Chicago Flightsfrom €546
Shannon to Chicago Flightsfrom €588
Cork to Chicago Flightsfrom €581
Milltown (Kerry) to Chicago Flightsfrom €1,129