$336 Cheap Flights from Chicago (ORD) to Shannon (SNN)

View $336 flight on Tue, Sep 23, 2025Opens in a new window

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to Shannon Airport (SNN)

Cheap Flights from Chicago to Shannon (ORD-SNN)

Prices were available within the past 7 days and start at $336 for one-way flights and $542 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Apr 4 - Tue, Apr 14
ORD
Chicago
SNN
Shannon
$542 Roundtrip, found 17 hours ago
$542
Roundtrip
found 17 hours ago
Select United flight, departing Sat, Apr 4 from Chicago to Shannon, returning Tue, Apr 14, priced at $542 found 17 hours ago
United
Sat, Apr 4 - Mon, Apr 13
ORD
Chicago
SNN
Shannon
$592 Roundtrip, found 17 hours ago
$592
Roundtrip
found 17 hours ago
Select United flight, departing Sat, Apr 4 from Chicago to Shannon, returning Mon, Apr 13, priced at $592 found 17 hours ago
United
Thu, Apr 2 - Tue, Apr 14
ORD
Chicago
SNN
Shannon
$593 Roundtrip, found 17 hours ago
$593
Roundtrip
found 17 hours ago
Select United flight, departing Thu, Apr 2 from Chicago to Shannon, returning Tue, Apr 14, priced at $593 found 17 hours ago
United
Sat, Apr 4 - Sun, Apr 19
ORD
Chicago
SNN
Shannon
$597 Roundtrip, found 17 hours ago
$597
Roundtrip
found 17 hours ago
Select United flight, departing Sat, Apr 4 from Chicago to Shannon, returning Sun, Apr 19, priced at $597 found 17 hours ago
United
Tue, Sep 9 - Thu, Sep 25
ORD
Chicago
SNN
Shannon
$608 Roundtrip, found 6 days ago
$608
Roundtrip
found 6 days ago
Select United flight, departing Tue, Sep 9 from Chicago to Shannon, returning Thu, Sep 25, priced at $608 found 6 days ago
Lufthansa
Fri, Apr 24 - Fri, May 1
ORD
Chicago
SNN
Shannon
$610 Roundtrip, found 6 days ago
$610
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Fri, Apr 24 from Chicago to Shannon, returning Fri, May 1, priced at $610 found 6 days ago
United
Sat, Sep 13 - Tue, Sep 23
ORD
Chicago
SNN
Shannon
$614 Roundtrip, found 5 days ago
$614
Roundtrip
found 5 days ago
Select United flight, departing Sat, Sep 13 from Chicago to Shannon, returning Tue, Sep 23, priced at $614 found 5 days ago
Delta
Wed, Sep 3 - Thu, Sep 11
ORD
Chicago
SNN
Shannon
$673 Roundtrip, found 2 hours ago
$673
Roundtrip
found 2 hours ago
Select Delta flight, departing Wed, Sep 3 from Chicago to Shannon, returning Thu, Sep 11, priced at $673 found 2 hours ago
American Airlines
Tue, Nov 4 - Wed, Nov 19
ORD
Chicago
SNN
Shannon
$730 Roundtrip, found 9 hours ago
$730
Roundtrip
found 9 hours ago
Select American Airlines flight, departing Tue, Nov 4 from Chicago to Shannon, returning Wed, Nov 19, priced at $730 found 9 hours ago
Air Canada
Wed, Nov 5 - Wed, Nov 12
ORD
Chicago
SNN
Shannon
$734 Roundtrip, found 5 days ago
$734
Roundtrip
found 5 days ago
Select Air Canada flight, departing Wed, Nov 5 from Chicago to Shannon, returning Wed, Nov 12, priced at $734 found 5 days ago

Find the cheapest month to fly from Chicago (ORD) to Shannon (SNN)

August is typically the cheapest month to fly

From $537 - $1,492 per traveler.

Graph displaying average flight prices per month

Alternative airports near Shannon

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Shannon Airport SNN. Cheapest and Closest option available. Average driving time to city center is 7 minutes. Flights from $707
SNN
Shannon Airport
CheapestClosest
Average driving time to city center7 min
Flights from $707
Flights from Chicago (ORD) to Shannon (SNN)
Origin airport
O'Hare Intl.
Destination airport
Shannon
Airlines serving
Aer Lingus, Air Canada, American Airlines, British Airways, Delta, JetBlue Airways, Lufthansa, United
Roundtrip price
$542
Distance
3580 mi
Average flight time
7 hours 25 mins

Chicago to Shannon Flights

The cheapest times to fly from Chicago to Shannon

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 Shannon are during the month of April. You can find some of the cheapest flights from Chicago to Shannon with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chicago to Shannon

Sunday is one of the best days to book for cheap flights from Chicago to Shannon: 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 Shannon

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 Shannon in 2025. You can also book with separate airlines for your outbound and return journeys, from $336 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 Shannon 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 Shannon 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 Shannon Airport (SNN) cost?
Grab a cheap one-way flight from $336 or cheap return flight from $542 from O'Hare Intl. Airport (ORD) to Shannon Airport (SNN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from O'Hare Intl. Airport (ORD) to Shannon Airport (SNN)?
The cheapest month to fly from ORD to SNN is April, when there's less demand. Off-peak season is typically when you'll find lower airfares between these airports.
What is the cheapest airline that flies from O'Hare Intl. Airport (ORD) to Shannon Airport (SNN)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest ORD to SNN flight.
How many flights per day from O'Hare Intl. Airport (ORD) to Shannon Airport (SNN)?
Direct flights from O'Hare Intl. Airport (ORD) to Shannon Airport (SNN) aren't available daily, so you'll have to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from ORD to SNN?
You'll generally find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What airline has the least delays from ORD to SNN?
Consider booking with United Airlines if you'd like to fly straight from O'Hare Intl. Airport (ORD) to Shannon Airport (SNN) without any holdups. This airline has the best track record for punctuality, with an on-time performance of 81%. 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 Shannon Airport (SNN)?
To arrive at Shannon Airport (SNN) on schedule, choose a flight that leaves O'Hare Intl. Airport (ORD) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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.
Is it cheaper to buy a plane ticket from O'Hare Intl. Airport (ORD) to Shannon Airport (SNN) last-minute?
Booking your flight from ORD to SNN shortly before your trip is generally more expensive. However, if you're flexible with your travel dates and times, you could land a cheap last-minute fare.
Is it cheaper to book an ORD to SNN flight and hotel package?
You can save money by booking an ORD to SNN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. Once you've selected your ideal accommodations and flights, 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 Shannon Airport (SNN)?
It's generally possible to reschedule or cancel your ORD to SNN flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.