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Flights to Chicago O'Hare Intl

€339 Cheap flights to Chicago O'Hare Intl Airport

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 O'Hare Intl Airport departing on 7/10. 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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Find the cheapest flights from Ireland to Chicago O'Hare Intl Airport

Cheap return flights

Logo
11:45 - 20:05DUB-ORD
14h 20m1 stop
Logo
18:35 - 08:10ORD-DUB
7h 35mdirect
€377
Find Deal
Wed, 5 Nov - Tue, 11 Nov
Scandinavian Airlines Logo
11:30 - 18:45DUB-ORD
36h 15m2 stops
Scandinavian Airlines Logo
19:20 - 19:35ORD-DUB
18h 15m2 stops
€380Scandinavian Airlines
Find Deal
Wed, 29 Oct - Sun, 2 Nov
Aer Lingus Logo
11:30 - 14:00DUB-ORD
8h 30mdirect
Aer Lingus Logo
22:45 - 15:40ORD-DUB
11h 55m1 stop
€382Aer Lingus
Find Deal
Sun, 1 Mar - Wed, 11 Mar
American Airlines Logo
10:55 - 17:45DUB-ORD
11h 50m1 stop
American Airlines Logo
20:40 - 14:15ORD-DUB
11h 35m1 stop
€386American Airlines
Find Deal
Sat, 1 Nov - Sat, 8 Nov
Aer Lingus Logo
11:35 - 14:00DUB-ORD
8h 25mdirect
Aer Lingus Logo
15:45 - 05:10ORD-DUB
7h 25mdirect
€386Aer Lingus
Find Deal
Mon, 13 Oct - Mon, 20 Oct
American Airlines Logo
11:30 - 20:26DUB-ORD
14h 56m1 stop
American Airlines Logo
18:45 - 09:40ORD-DUB
32h 55m1 stop
€391American Airlines
Find Deal
Wed, 17 Dec - Tue, 6 Jan
British Airways Logo
08:50 - 20:50DUB-ORD
18h 00m2 stops
British Airways Logo
11:48 - 09:35ORD-DUB
15h 47m2 stops
€392British Airways
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Tue, 11 Nov - Tue, 18 Nov
United Airlines Logo
09:20 - 18:41DUB-ORD
15h 21m1 stop
United Airlines Logo
20:20 - 09:45ORD-DUB
7h 25mdirect
€396United Airlines
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Sat, 27 Sep - Tue, 30 Sep
United Airlines Logo
09:20 - 20:04DUB-ORD
16h 44m1 stop
United Airlines Logo
12:45 - 07:30ORD-DUB
12h 45m2 stops
€397United Airlines
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Fri, 24 Oct - Mon, 3 Nov
British Airways Logo
10:30 - 23:31DUB-ORD
19h 01m2 stops
British Airways Logo
17:10 - 09:50ORD-DUB
10h 40m1 stop
€415British Airways
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Thu, 13 Nov - Sat, 22 Nov

momondo Fare Finder

 
Locate flights to Chicago O'Hare Intl 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 15 September 2025.
Use the filters below to find and compare flights to Chicago O'Hare Intl Airport that are best for you.

Fly from

Route

Depart

Return

Price

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 5/11

11:45-20:05

1 stop14h 20m

Chicago O'Hare Intl

Tue 11/11

18:35-08:10

Nonstop7h 35m

€377

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 29/10

11:30-18:45

2 stops36h 15m

Chicago O'Hare Intl

Sun 2/11

19:20-19:35

2 stops18h 15m

€380

DublinChicago

DUB - ORD

DUBORD

Dublin

Sun 1/3

11:30-14:00

Nonstop8h 30m

Chicago O'Hare Intl

Wed 11/3

22:45-15:40

1 stop11h 55m

€382

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 1/11

10:55-17:45

1 stop11h 50m

Chicago O'Hare Intl

Sat 8/11

20:40-14:15

1 stop11h 35m

€386

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 13/10

11:35-14:00

Nonstop8h 25m

Chicago O'Hare Intl

Mon 20/10

15:45-05:10

Nonstop7h 25m

€386

DublinChicago

DUB - ORD

DUBORD

Dublin

Wed 17/12

11:30-20:26

1 stop14h 56m

Chicago O'Hare Intl

Tue 6/1

18:45-09:40

1 stop32h 55m

€391

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 11/11

08:50-20:50

2 stops18h 00m

Chicago O'Hare Intl

Tue 18/11

11:48-09:35

2 stops15h 47m

€392

DublinChicago

DUB - ORD

DUBORD

Dublin

Sat 27/9

09:20-18:41

1 stop15h 21m

Chicago O'Hare Intl

Tue 30/9

20:20-09:45

Nonstop7h 25m

€396

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 24/10

09:20-20:04

1 stop16h 44m

Chicago O'Hare Intl

Mon 3/11

12:45-07:30

2 stops12h 45m

€397

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 13/11

10:30-23:31

2 stops19h 01m

Chicago O'Hare Intl

Sat 22/11

17:10-09:50

1 stop10h 40m

€415

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 O'Hare Intl Airport from

Flights to Chicago O'Hare Intl Airport – Travel Insights & Trends

Get data-powered insights and trends for flights to Chicago O'Hare Intl Airport to help you craft the best travel plan.

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.

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 €612. 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 Sunday, with ticket prices averaging around €715.

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

In general, September 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 €429. If you are unable to visit Chicago O'Hare Intl Airport during the month of September, then departing from Ireland during the month February is also very affordable. Most momondo users find prices during this month for around €430.

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 €516. Flights to Chicago O'Hare Intl Airport are more costly at midday, with an average ticket price of €675. 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 €515 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 €455 on momondo.

Cheapest flights to Chicago O'Hare Intl

Find the cheapest flights to Chicago O'Hare Intl from your nearest city or airport
Find flights from Dublin to Chicago O'Hare Intl Airport
CHEAPEST MONTH TO FLY TO CHICAGO O'HARE INTL AIRPORT FROM DUBLINSeptember17% cheaperFlying from Dublin to Chicago O'Hare Intl Airport costs on average just €429 in September
MOST EXPENSIVE MONTH TO FLY TO CHICAGO O'HARE INTL AIRPORT FROM DUBLINJuly26% more expensiveIt costs about €652 for flights to Chicago O'Hare Intl Airport from Dublin in July
MOST POPULAR MONTH TO FLY TO CHICAGO O'HARE INTL AIRPORT FROM DUBLINOctober217% more users visitedMore momondo users searched in flights to Chicago O'Hare Intl Airport from Dublin in October than any other month

Cheap Chicago O'Hare Intl Airport flight deals and tips

Summary info about Chicago O'Hare Intl Airport flight prices, duration and airlines

Best One-Way Price

€339

Best Round-Trip Price

€377

Fastest flight time

8h 00m

Popular in

July
The best one-way flight price to Chicago from Ireland in the last 72 hours is €339 (Shannon to Chicago O'Hare Intl).
Search Deals
The best round-trip flight price to Chicago from Ireland in the last 72 hours is €377 (Dublin to Chicago O'Hare Intl).
Search Deals
The fastest flight to Chicago from Ireland takes 8h 00m (Dublin to Chicago O'Hare Intl).
Search Deals
July has the highest demand for flights to Chicago, with a 15% price increase on average.
Search Deals

Frequently asked questions about flying to Chicago O'Hare Intl Airport

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

In general, when booking your flight to Chicago O'Hare Intl Airport, September is the cheapest month on average.

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

Most flyers found that booking flight tickets 60 days in advance of their planned departure date is, on average, the best time to get cheap flights to Chicago O'Hare Intl Airport.

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

Most of our users find that booking their departure to Chicago O'Hare Intl Airport on a Wednesday is the cheapest. Conversely, departing on a Sunday seems to be the most expensive.

What is the cheapest time of day to fly to Chicago O'Hare Intl Airport?

Typically, cheap prices to Chicago O'Hare Intl Airport are most often found for Evening flights. Cheap prices are less likely for Midday flights.

Is there an alternative airport near Chicago O'Hare Intl Airport?

Finding an alternative and possibly cheaper destination airport near Chicago O'Hare Intl Airport is possible. If you are planning a flight to Chicago O'Hare Intl Airport, 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 €184 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.

Which airlines fly to Chicago O'Hare Intl Airport?

You can find flights to Chicago O'Hare Intl Airport from 5 airlines. If you’re unsure which to fly with, consider booking your flight with Aer Lingus, United Airlines or British Airways as these are the most popular among our users. Aer Lingus is the most favoured with 63% of momondo travellers booking flights with this airline.

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

Prices for flights to Chicago O'Hare Intl Airport are refreshed on a daily basis.

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

As of September 2025, there are 6 operators available to choose from for flights to Chicago O'Hare Intl Airport.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel to Chicago O'Hare Intl Airport.

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

The travel and health documents required for your trip to Chicago O'Hare Intl Airport 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 O'Hare Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport 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 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?

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

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