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Flights to Chicago

€272 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 2/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Ireland to Chicago

Cheap return flights

Enter your travel dates to find the best prices.
JetBlue Logo
11:30 - 07:44
DUB
-
ORD
26h 14m
1 stop
JetBlue Logo
06:00 - 08:20
ORD
-
DUB
20h 20m
1 stop
€496JetBlue
Fri, 8 May - Sun, 17 May
Multiple Airlines Logo
19:50 - 23:15
DUB
-
ORD
33h 25m
3 stops
Multiple Airlines Logo
19:33 - 10:10
ORD
-
DUB
32h 37m
3 stops
€498Multiple Airlines
Fri, 8 May - Sun, 17 May
British Airways Logo
10:30 - 18:15
DUB
-
ORD
13h 45m
1 stop
British Airways Logo
17:00 - 12:00
ORD
-
DUB
13h 00m
1 stop
€499British Airways
Tue, 19 May - Mon, 10 Aug
British Airways Logo
10:30 - 18:15
DUB
-
ORD
13h 45m
1 stop
British Airways Logo
21:15 - 16:20
ORD
-
DUB
13h 05m
1 stop
€500British Airways
Tue, 19 May - Sun, 9 Aug
Finnair Logo
09:30 - 11:30
DUB
-
ORD
8h 00mdirect
Finnair Logo
22:25 - 11:50
ORD
-
DUB
7h 25mdirect
€502Finnair
Fri, 8 May - Sun, 17 May
JetBlue Logo
11:30 - 07:44
DUB
-
ORD
26h 14m
1 stop
JetBlue Logo
06:00 - 08:20
ORD
-
DUB
20h 20m
1 stop
€503JetBlue
Fri, 8 May - Sun, 17 May
Icelandair Logo
12:15 - 21:25
DUB
-
ORD
15h 10m
1 stop
Icelandair Logo
19:25 - 13:15
ORD
-
DUB
11h 50m
1 stop
€504Icelandair
Fri, 4 Sep - Sun, 20 Sep
Icelandair Logo
12:15 - 21:25
DUB
-
ORD
15h 10m
1 stop
Icelandair Logo
19:25 - 13:15
ORD
-
DUB
11h 50m
1 stop
€506Icelandair
Fri, 18 Sep - Mon, 21 Sep
Air France Logo
12:00 - 17:56
DUB
-
MDW
11h 56m
1 stop
Air France Logo
13:49 - 07:55
MDW
-
DUB
12h 06m
1 stop
€545Air France
Tue, 2 Jun - Tue, 9 Jun
Air France Logo
10:00 - 18:33
DUB
-
MDW
14h 33m
1 stop
Air France Logo
13:59 - 07:55
MDW
-
DUB
11h 56m
1 stop
€579Air France
Fri, 8 May - Thu, 14 May

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 19 April 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

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 8/5

11:30-07:44

1 stop26h 14m

Chicago O'Hare Intl

Sun 17/5

06:00-08:20

1 stop20h 20m

€496

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 8/5

19:50-23:15

3 stops33h 25m

Chicago O'Hare Intl

Sun 17/5

19:33-10:10

3 stops32h 37m

€498

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 19/5

10:30-18:15

1 stop13h 45m

Chicago O'Hare Intl

Mon 10/8

17:00-12:00

1 stop13h 00m

€499

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 19/5

10:30-18:15

1 stop13h 45m

Chicago O'Hare Intl

Sun 9/8

21:15-16:20

1 stop13h 05m

€500
Fastest return journey

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 8/5

09:30-11:30

Nonstop8h 00m

Chicago O'Hare Intl

Sun 17/5

22:25-11:50

Nonstop7h 25m

€502

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 8/5

11:30-07:44

1 stop26h 14m

Chicago O'Hare Intl

Sun 17/5

06:00-08:20

1 stop20h 20m

€503

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 4/9

12:15-21:25

1 stop15h 10m

Chicago O'Hare Intl

Sun 20/9

19:25-13:15

1 stop11h 50m

€504

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 18/9

12:15-21:25

1 stop15h 10m

Chicago O'Hare Intl

Mon 21/9

19:25-13:15

1 stop11h 50m

€506

DublinChicago

DUB - MDW

DUBMDW

Dublin

Tue 2/6

12:00-17:56

1 stop11h 56m

Chicago Midway

Tue 9/6

13:49-07:55

1 stop12h 06m

€545

DublinChicago

DUB - MDW

DUBMDW

Dublin

Fri 8/5

10:00-18:33

1 stop14h 33m

Chicago Midway

Thu 14/5

13:59-07:55

1 stop11h 56m

€579

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 €397, 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 €601. 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 €755.

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 €589. 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 €726 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 €557 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 DUBLINSeptember24% cheaperFlying from Dublin to Chicago costs on average just €397 in September
MOST EXPENSIVE MONTH TO FLY TO CHICAGO FROM DUBLINAugust26% more expensiveIt costs about €660 for flights to Chicago from Dublin in August
MOST POPULAR MONTH TO FLY TO CHICAGO FROM DUBLINOctober432% 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

€272

Best Round-Trip Price

€496

Fastest flight time

16h 13m

Popular in

August
The best one-way flight price to Chicago from Ireland in the last 72 hours is €272 (Dublin to Chicago Midway).
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The best round-trip flight price to Chicago from Ireland in the last 72 hours is €496 (Dublin to Chicago O'Hare Intl).
Search Deals
The fastest flight to Chicago from Ireland takes 16h 13m (Dublin to Chicago O'Hare Intl).
Search Deals
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 €522. 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 €206 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 Logan Square?

Yes, you can get a flight ticket to Chicago O'Hare Intl if you want to reach Logan Square. It is the nearest Chicago airport (17.3 km away).

What’s the closest airport to McCormick Place?

The closest airport to McCormick Place is 27.7 km away - Chicago’s Chicago O'Hare Intl 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 April 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

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