$223 Cheap Flights from Chicago (ORD) to Dublin (DUB)

View $223 flight on Thu, Aug 7, 2025Opens in a new window

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to Dublin Airport (DUB)

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Cheap Flights from Chicago to Dublin (ORD-DUB)

Prices were available within the past 7 days and start at $223 for one-way flights and $381 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Wed, Nov 12 - Wed, Nov 19
ORD
Chicago
DUB
Dublin
$381 Roundtrip, just found
$381
Roundtrip
just found
Select Icelandair flight, departing Wed, Nov 12 from Chicago to Dublin, returning Wed, Nov 19, priced at $381 just found
Icelandair
Fri, Oct 3 - Wed, Oct 22
ORD
Chicago
DUB
Dublin
$386 Roundtrip, found 5 days ago
$386
Roundtrip
found 5 days ago
Select Icelandair flight, departing Fri, Oct 3 from Chicago to Dublin, returning Wed, Oct 22, priced at $386 found 5 days ago
Icelandair
Sat, Sep 27 - Wed, Oct 22
ORD
Chicago
DUB
Dublin
$391 Roundtrip, found 6 days ago
$391
Roundtrip
found 6 days ago
Select Icelandair flight, departing Sat, Sep 27 from Chicago to Dublin, returning Wed, Oct 22, priced at $391 found 6 days ago
Scandinavian Airlines
Fri, Nov 14 - Sat, Nov 22
ORD
Chicago
DUB
Dublin
$399 Roundtrip, found 3 hours ago
$399
Roundtrip
found 3 hours ago
Select Scandinavian Airlines flight, departing Fri, Nov 14 from Chicago to Dublin, returning Sat, Nov 22, priced at $399 found 3 hours ago
Aer Lingus
Wed, Dec 3 - Thu, Dec 11
ORD
Chicago
DUB
Dublin
$409 Roundtrip, found 15 hours ago
$409
Roundtrip
found 15 hours ago
Select Aer Lingus flight, departing Wed, Dec 3 from Chicago to Dublin, returning Thu, Dec 11, priced at $409 found 15 hours ago
TAP Portugal
Thu, Oct 23 - Tue, Nov 11
ORD
Chicago
DUB
Dublin
$428 Roundtrip, found 1 day ago
$428
Roundtrip
found 1 day ago
Select TAP Portugal flight, departing Thu, Oct 23 from Chicago to Dublin, returning Tue, Nov 11, priced at $428 found 1 day ago
United
Sun, Aug 3 - Thu, Aug 21
ORD
Chicago
DUB
Dublin
$511 Roundtrip, found 1 day ago
$511
Roundtrip
found 1 day ago
Select United flight, departing Sun, Aug 3 from Chicago to Dublin, returning Thu, Aug 21, priced at $511 found 1 day ago
Air Canada
Mon, Aug 11 - Thu, Aug 21
ORD
Chicago
DUB
Dublin
$511 Roundtrip, found 2 hours ago
$511
Roundtrip
found 2 hours ago
Select Air Canada flight, departing Mon, Aug 11 from Chicago to Dublin, returning Thu, Aug 21, priced at $511 found 2 hours ago
American Airlines
Tue, Aug 5 - Thu, Aug 21
ORD
Chicago
DUB
Dublin
$521 Roundtrip, found 1 day ago
$521
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Aug 5 from Chicago to Dublin, returning Thu, Aug 21, priced at $521 found 1 day ago
Iberia
Tue, Aug 12 - Thu, Aug 21
ORD
Chicago
DUB
Dublin
$523 Roundtrip, just found
$523
Roundtrip
just found
Select Iberia flight, departing Tue, Aug 12 from Chicago to Dublin, returning Thu, Aug 21, priced at $523 just found

Find the cheapest month to fly from Chicago (ORD) to Dublin (DUB)

January is typically the cheapest month to fly

From $378 - $847 per traveler.

Graph displaying average flight prices per month

Flights from Chicago (ORD) to Dublin (DUB)
Origin airport
O'Hare Intl.
Destination airport
Dublin
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United
Roundtrip price
$381
Distance
3664 mi
Average flight time
13 hours 25 mins

Chicago to Dublin Flights

The cheapest times to fly from Chicago to Dublin

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Chicago to Dublin are during the month of November. You can find some of the cheapest flights from Chicago to Dublin with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chicago to Dublin

Sunday is one of the best days to book for cheap flights from Chicago to Dublin: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Chicago to Dublin

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Chicago to Dublin in 2025. You can also book with separate airlines for your outbound and return journeys, from $223 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Chicago to Dublin flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Chicago to Dublin airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to Dublin Airport (DUB) cost?
Cheap round-trip fares from O'Hare Intl. Airport (ORD) to Dublin Airport (DUB) start from $513. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Aer Lingus flight leaving ORD on July 29 2025 and touching down at DUB. The price was last updated on July 2 2025 and has not changed since.
What is the cheapest month to fly from ORD to DUB?
The cheapest flights from ORD to DUB are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from O'Hare Intl. Airport (ORD) to Dublin Airport (DUB)?
When setting off from O'Hare Intl. Airport (ORD), you can jump on a direct flight to Dublin Airport (DUB) with Aer Lingus.
What is the cheapest airline that flies from ORD to DUB?
At the moment, the cheapest carrier operating one-way flights from ORD to DUB is United. You can jet off on this route from $439. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from ORD on September 1 2025. Prices were last updated on July 2 2025 and have not changed since.
How many flights per day from O'Hare Intl. Airport (ORD) to Dublin Airport (DUB)?
On average, you can take your pick of 6 nonstop flights departing from O'Hare Intl. Airport (ORD) to Dublin Airport (DUB) per week. If you don't see one that fits your travel plans, consider booking a flight that has a layover. Customize your search results on Expedia to include one stop or more and select the next best alternative.
What are the most popular departure times for flights from O'Hare Intl. Airport (ORD) to Dublin Airport (DUB)?
Flights between ORD and DUB are their busiest at 9 PM. For a quieter trip and possibly cheaper tickets, choose a time outside the usual busy windows.
What day of the week has the most flights from ORD to DUB?
Saturday has the most flights from O'Hare Intl. Airport (ORD) to Dublin Airport (DUB). Consider taking off on this day and you'll have the best chance of finding a schedule that works for you.
What is the earliest flight from O'Hare Intl. Airport (ORD) to Dublin Airport (DUB)?
Take the earliest flight at around 9:00PM UTC-6, heading out of O'Hare Intl. Airport (ORD). You'll be flying for about 7h 20m, coming in to land at Dublin Airport (DUB) at approximately 10:20AM UTC+0.
How long does it take to fly from O'Hare Intl. Airport (ORD) to Dublin Airport (DUB)?
It takes around 7 hours and 19 minutes to travel the 3,700 mi from ORD to DUB.
What airline has the least delays from ORD to DUB?
Consider booking with Lufthansa if you'd like to go straight from O'Hare Intl. Airport (ORD) to Dublin Airport (DUB) without any delays. This airline has the best track record for punctuality, with an on-time performance of 93%. Want to be updated if anything changes? You can check your flight status using the Expedia App.
What is the best time to fly from O'Hare Intl. Airport (ORD) to Dublin Airport (DUB)?
Book a flight from O'Hare Intl. Airport (ORD) to Dublin Airport (DUB) that takes off before 3 PM to reduce the risk of cancellations and delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Dublin from O'Hare Intl. Airport (ORD)?
If you're traveling on a direct flight from O'Hare Intl. Airport (ORD) to Dublin, Dublin Airport (DUB) is the only airport you can land at.
Is it cheaper to buy a plane ticket from O'Hare Intl. Airport (ORD) to Dublin Airport (DUB) last-minute?
Booking your plane ticket from ORD to DUB just before your journey is typically more expensive. But if you're flexible with your travel dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book an ORD to DUB flight and hotel package?
You'll generally save money by booking an ORD to DUB flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. Once you've chosen your preferred flights and accommodations, consider adding extras including activities, car rentals and tours.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to Dublin Airport (DUB)?
If you booked your ORD to DUB flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you'd like more information.

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