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Cheap flights from Dublin to Chicago from €394

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Dublin to Chicago departing on 28/12. 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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Cheap return flights

American Airlines Logo
12:55 - 21:19DUB-ORD
14h 24m1 stop
American Airlines Logo
16:33 - 12:45ORD-DUB
14h 12m2 stops
€394American Airlines
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Sun, 28 Dec - Sat, 10 Jan
Logo
05:55 - 14:10DUB-ORD
14h 15m1 stop
Logo
17:20 - 15:45ORD-DUB
16h 25m1 stop
€395
Find Deal
Fri, 24 Oct - Mon, 3 Nov
United Airlines Logo
09:20 - 14:55DUB-ORD
11h 35m1 stop
United Airlines Logo
12:55 - 07:10ORD-DUB
12h 15m1 stop
€396United Airlines
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Mon, 22 Sep - Wed, 15 Oct
Delta Logo
06:00 - 16:10DUB-ORD
15h 10m1 stop
Delta Logo
15:45 - 15:45ORD-DUB
18h 00m2 stops
€397Delta
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Thu, 30 Oct - Wed, 12 Nov
British Airways Logo
15:25 - 14:50DUB-ORD
29h 25m1 stop
British Airways Logo
20:40 - 17:55ORD-DUB
15h 15m1 stop
€399British Airways
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Tue, 30 Sep - Tue, 7 Oct
United Airlines Logo
09:50 - 15:04DUB-ORD
11h 14m1 stop
United Airlines Logo
20:20 - 09:45ORD-DUB
7h 25mdirect
€401United Airlines
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Fri, 26 Sep - Sun, 19 Oct
Aer Lingus Logo
15:20 - 17:55DUB-ORD
8h 35mdirect
Aer Lingus Logo
21:00 - 10:20ORD-DUB
7h 20mdirect
€423Aer Lingus
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Fri, 19 Dec - Sun, 11 Jan
Aer Lingus Logo
15:20 - 17:55DUB-ORD
8h 35mdirect
Aer Lingus Logo
15:50 - 05:10ORD-DUB
7h 20mdirect
€433Aer Lingus
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Fri, 19 Dec - Tue, 30 Dec
British Airways Logo
11:00 - 23:53DUB-ORD
18h 53m2 stops
British Airways Logo
18:36 - 17:05ORD-DUB
16h 29m2 stops
€435British Airways
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Thu, 9 Oct - Tue, 14 Oct
Icelandair Logo
11:30 - 17:20DUB-ORD
11h 50m1 stop
Icelandair Logo
18:30 - 10:15ORD-DUB
9h 45m1 stop
€450Icelandair
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Fri, 26 Dec - Tue, 13 Jan

American Airlines flights from Dublin to Chicago O'Hare Intl Airport

Our best American Airlines deals on Dublin to Chicago O'Hare Intl Airport flight tickets
American Airlines
28 Dec
DUB12:55Dublin
14h 24m
1 stop
ORD21:19Chicago O'Hare Intl
10 Jan
ORD16:33Chicago O'Hare Intl
14h 12m
2 stops
DUB12:45Dublin
€394
Find similar
American Airlines
15 Sept
DUB12:45Dublin
29h 05m
1 stop
ORD11:50Chicago O'Hare Intl
20 Sept
ORD18:55Chicago O'Hare Intl
28h 35m
1 stop
DUB05:30Dublin
€410
Find similar
American Airlines
15 Sept
DUB15:20Dublin
26h 30m
1 stop
ORD11:50Chicago O'Hare Intl
20 Sept
ORD18:55Chicago O'Hare Intl
28h 35m
1 stop
DUB05:30Dublin
€411
Find similar

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

Our best United Airlines deals on Dublin to Chicago O'Hare Intl Airport flight tickets
United Airlines
22 Sept
DUB09:20Dublin
11h 35m
1 stop
ORD14:55Chicago O'Hare Intl
15 Oct
ORD12:55Chicago O'Hare Intl
12h 15m
1 stop
DUB07:10Dublin
€396
Find similar
United Airlines
11 Sept
DUB09:20Dublin
11h 35m
1 stop
ORD14:55Chicago O'Hare Intl
17 Sept
ORD18:02Chicago O'Hare Intl
11h 08m
1 stop
DUB11:10Dublin
€397
Find similar
United Airlines
26 Sept
DUB09:50Dublin
11h 14m
1 stop
ORD15:04Chicago O'Hare Intl
19 Oct
ORD20:20Chicago O'Hare Intl
7h 25m
DUB09:45Dublin
€401
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momondo Fare Finder

 
Customise your flight search to find flights from Dublin 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 2 September 2025.
Use the filters below to find and compare flights from Dublin 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 28/12

12:55-21:19

1 stop14h 24m

Chicago O'Hare Intl

Sat 10/1

16:33-12:45

2 stops14h 12m

€394

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 24/10

05:55-14:10

1 stop14h 15m

Chicago O'Hare Intl

Mon 3/11

17:20-15:45

1 stop16h 25m

€395

DublinChicago

DUB - ORD

DUBORD

Dublin

Mon 22/9

09:20-14:55

1 stop11h 35m

Chicago O'Hare Intl

Wed 15/10

12:55-07:10

1 stop12h 15m

€396

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 30/10

06:00-16:10

1 stop15h 10m

Chicago O'Hare Intl

Wed 12/11

15:45-15:45

2 stops18h 00m

€397

DublinChicago

DUB - ORD

DUBORD

Dublin

Tue 30/9

15:25-14:50

1 stop29h 25m

Chicago O'Hare Intl

Tue 7/10

20:40-17:55

1 stop15h 15m

€399

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 26/9

09:50-15:04

1 stop11h 14m

Chicago O'Hare Intl

Sun 19/10

20:20-09:45

Nonstop7h 25m

€401

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 19/12

15:20-17:55

Nonstop8h 35m

Chicago O'Hare Intl

Sun 11/1

21:00-10:20

Nonstop7h 20m

€423

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 19/12

15:20-17:55

Nonstop8h 35m

Chicago O'Hare Intl

Tue 30/12

15:50-05:10

Nonstop7h 20m

€433

DublinChicago

DUB - ORD

DUBORD

Dublin

Thu 9/10

11:00-23:53

2 stops18h 53m

Chicago O'Hare Intl

Tue 14/10

18:36-17:05

2 stops16h 29m

€435

DublinChicago

DUB - ORD

DUBORD

Dublin

Fri 26/12

11:30-17:20

1 stop11h 50m

Chicago O'Hare Intl

Tue 13/1

18:30-10:15

1 stop9h 45m

€450

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 Dublin 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 typical price of a round-trip flight between Dublin and Chicago O'Hare Intl Airport?

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

In general, February is the cheapest month to fly from Dublin to Chicago O'Hare Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around €430. If you are unable to visit Chicago O'Hare Intl Airport during the month of February, then departing from Dublin during the month September is also very affordable. Most momondo users find prices during this month for around €441.

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 Dublin is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as €606. 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 €703.

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

Our data shows that the cheapest Dublin 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 €518. Flights to Chicago O'Hare Intl Airport are more costly at midday, with an average ticket price of €676. Departure times at midday fall within the peak daily travel times, which is why tickets can be more expensive.

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

Fly from Dublin to Chicago O'Hare Intl for the best Dublin - 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 Dublin when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around €511 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 Dublin for as low as €439 on momondo.

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

There are 3 cabin classes available to choose from on Dublin 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.

How have Dublin to Chicago O'Hare Intl Airport flight prices changed over time?

As of September 2025, prices for Dublin to Chicago O'Hare Intl Airport flights are approximately 36% more expensive when compared to flights at the same time last year.

When to book flights from Dublin to Chicago O'Hare Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Dublin to Chicago O'Hare Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Dublin to Chicago O'Hare Intl Airport (DUB to ORD) flight deals and tips

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

Best price found

€689

Fastest flight time

8h 00m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Dublin in the past 72 hours is €689. The best return flight deal from Dublin to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is €463.
The fastest flight from Dublin to Chicago O'Hare Intl Airport takes 8h 00m
Direct flights go from Dublin to Chicago O'Hare Intl Airport every day.
Search flight deals

  • How far is Dublin to Chicago O'Hare Intl by plane?

    Chicago O'Hare Intl is 5895.0 km away from Dublin. In terms of flight time, this usually takes a little over 8h 00m.

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

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

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

  • How old do you have to be to fly from Dublin Airport 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 from Dublin Airport 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 you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

  • What is the most popular airline from Dublin to Chicago O'Hare Intl Airport?

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

Compare and see reviews for airlines that fly from Dublin to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
IcelandairPriceFrom €335Free CancellationRating
7.0
544 reviews
Search Icelandair flights
United AirlinesPriceFrom €354Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
British AirwaysPriceFrom €375Free CancellationRating
6.7
7,344 reviews
Search British Airways flights
Aer LingusPriceFrom €380Free CancellationRating
7.2
1,247 reviews
Search Aer Lingus flights
American AirlinesPriceFrom €417Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

  • United Airlines Flights From Dublin to Chicago O'Hare Intl Airport

    United Airlines flies from Dublin to Chicago O'Hare Intl Airport around 7 times per week, with 8,937 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Dublin to Chicago O'Hare Intl Airport in the last 72 hours was €415 (round-trip), much lower than the average airfare cost of €681 for United Airlines flights on this route.

  • Aer Lingus Flights From Dublin to Chicago O'Hare Intl Airport

    The best Aer Lingus deal for Dublin to Chicago O'Hare Intl Airport flight tickets found on momondo in the last 72 hours was €445, round-trip. It should be noted that an average Aer Lingus flight deal for this route in this time was higher, at €609 round-trip. Aer Lingus operates 21 flights out of Dublin into Chicago O'Hare Intl Airport in an average week, so prices vary by time and availability. 1,247 Aer Lingus reviews by users on momondo have scored the airline at 7.2/10.

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 Dublin to Chicago?

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

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

All flight searches from Dublin to Chicago on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Chicago from Dublin. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Dublin to Chicago flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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