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Shannon

$397+ Cheap flights from Illinois to Shannon (SNN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SNN
nov. 29 — déc. 61
sam. 11/29
sam. 12/6
1 adult, Economy
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Find flight deals from Illinois to Shannon

Cheapest flights from Illinois to Shannon
Explore the most affordable flight options available from Illinois to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octobre 30, 2025.

This American Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 11/98:40 pmORD - SNN
1 stop14h 05mAmerican Airlines
mar. 11/187:50 amSNN - ORD
1 stop16h 55mAmerican Airlines
Deal found 10/29$470
This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/59:45 pmORD - SNN
1 stop12h 00mAmerican Airlines
jeu. 12/117:50 amSNN - ORD
1 stop16h 55mAmerican Airlines
Deal found 10/30$520
This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/58:35 pmORD - SNN
1 stop13h 10mAmerican Airlines
sam. 12/137:50 amSNN - ORD
2 stops17h 37mAmerican Airlines
Deal found 10/30$580
This American Airlines deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/56:35 pmORD - SNN
1 stop15h 10mAmerican Airlines
ven. 12/127:50 amSNN - ORD
1 stop15h 10mAmerican Airlines
Deal found 10/30$620
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 11/98:40 pmORD - SNN
1 stop14h 05mMultiple Airlines
mar. 11/187:50 amSNN - ORD
1 stop13h 35mMultiple Airlines
Deal found 10/29$637
This Ovago deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/106:30 pmORD - SNN
1 stop11h 00mMultiple Airlines
mer. 11/197:50 amSNN - ORD
1 stop15h 10mMultiple Airlines
Deal found 10/29$648
This Ovago deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/118:40 pmORD - SNN
1 stop14h 05mMultiple Airlines
mer. 11/197:50 amSNN - ORD
1 stop12h 00mMultiple Airlines
Deal found 10/29$652
This Air Canada deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 12/34:05 pmSTL - SNN
2 stops13h 25mAir Canada
dim. 12/78:05 pmSNN - STL
2 stops49h 24mAir Canada
Deal found 10/29$683
This American Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 12/311:50 amSTL - SNN
1 stop12h 30mAmerican Airlines
dim. 12/72:45 pmSNN - STL
2 stops14h 53mAmerican Airlines
Deal found 10/29$717
This American Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/1211:50 amSTL - SNN
1 stop12h 30mAmerican Airlines
ven. 12/192:45 pmSNN - STL
2 stops16h 40mAmerican Airlines
Deal found 10/28$841
This Kiwi.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 10/305:56 pmMDW - SNN
1 stop30h 59mMultiple Airlines
jeu. 11/68:05 pmSNN - MDW
2 stops32h 15mMultiple Airlines
Deal found 10/29$1,044
This Air Canada deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/124:05 pmSTL - SNN
2 stops17h 40mMultiple Airlines
ven. 12/197:50 amSNN - STL
3 stops19h 53mMultiple Airlines
Deal found 10/28$1,433

Cheap flight deals from Illinois to Shannon

Keep the following information in mind while searching for Illinois to Shannon flight deals. Data was last updated octobre 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$470
(American Airlines)

One-way from

$397
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$965

Good round-trip deal

$726 or less
Provider with most accurate pricing for Chicago (CHI)-Shannon flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Shannon flights.
Search Deals
From Illinois to Shannon
Search Deals
One-way flight from Illinois to Shannon
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($121 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Shannon.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Shannon 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, Cheapflights users made 2,558,603 searches. Data last updated octobre 30, 2025.
Use the filters below to find and compare flights from Illinois to Shannon that are best for you.

Fly from

Illinois

Fly to

Shannon

Route

Depart

Return

Price

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

lun. 4/27

5:40 pm-11:20 am

1 stop11h 40m

Shannon

mer. 5/6

9:15 pm-2:40 pm

1 stop23h 25m

$470

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

mar. 4/21

4:45 pm-10:15 am

1 stop11h 30m

Shannon

ven. 5/1

12:30 pm-9:05 pm

2 stops14h 35m

$492

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

lun. 4/27

2:00 pm-10:15 am

2 stops14h 15m

Shannon

mar. 5/5

12:30 pm-6:47 pm

1 stop12h 17m

$492

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

mer. 4/22

1:12 pm-10:15 am

2 stops15h 03m

Shannon

mar. 5/5

12:30 pm-9:05 pm

2 stops14h 35m

$492

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

lun. 4/27

11:15 am-10:15 am

2 stops17h 00m

Shannon

mer. 5/6

12:30 pm-6:47 pm

1 stop12h 17m

$492

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

ven. 12/5

9:45 pm-3:45 pm

1 stop12h 00m

Shannon

jeu. 12/11

7:50 am-6:45 pm

1 stop16h 55m

$520

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

mer. 4/1

9:15 pm-8:35 pm

1 stop17h 20m

Shannon

sam. 4/18

7:40 am-1:50 pm

1 stop12h 10m

$520

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

mer. 12/3

4:05 pm-11:30 am

2 stops13h 25m

Shannon

dim. 12/7

8:05 pm-3:29 pm

2 stops49h 24m

$683

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

mer. 12/3

11:50 am-6:20 am

1 stop12h 30m

Shannon

dim. 12/7

2:45 pm-11:38 pm

2 stops14h 53m

$717

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

ven. 12/12

11:50 am-6:20 am

1 stop12h 30m

Shannon

ven. 12/19

2:45 pm-1:25 am

2 stops16h 40m

$841

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 23 results
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Best time to book a flight from Illinois to Shannon

Have a flexible travel schedule? Discover the best time to fly to Shannon from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to Shannon

What is the cheapest month to book a flight from Illinois to Shannon, Clare?

Currently, November is the cheapest month in which you can book a flight from Illinois to Shannon, Clare (average of $492). Flying from Illinois to Shannon, Clare in June is currently the most expensive (average of $760). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to SNN?

Find hourly flight availability from Illinois to Shannon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octobre 30, 2025.

A simple way to save on the total cost of your ticket is to fly from Illinois to Shannon, Clare in the evening. If you’re flexible enough to do this you can expect to save up to 23% on your trip compared to booking a flight in the afternoon.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Shannon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Shannon from Illinois?

    Most people fly into Shannon (SNN) if they book a flight to Shannon from Illinois. Shannon is conveniently located just 2.1 mi from Shannon’s city center.

  • How long is the flight from Illinois to Shannon, Clare?

    Departing from Illinois to Shannon, Clare will take you 11h 30m. The distance from Illinois to Shannon, Clare is about 3578 mi. This flight may include one or multiple stops.

  • What are the most popular routes from Illinois to Shannon, Clare?

    When deciding which route to take from Illinois to Shannon, Clare consider Chicago O'Hare Intl - Shannon, Lambert-St Louis - Shannon or Chicago Midway - Shannon as they are the most popular.

  • What are the cheapest flights from Illinois to Shannon, Clare?

    While on average a flight from Illinois to Shannon, Clare is generally $766, our data shows the cheapest flight currently is $606. When looking at the most popular route, (Chicago O'Hare Intl - Shannon), you can expect to pay $492 for that flight.

  • Can I find deals for flights from Illinois to Shannon that include hotel bookings?

    Yes. In addition to deals on Illinois to Shannon flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Shannon?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Shannon.

  • Can I find deals for business class flights from Illinois to Shannon?

    Yes. Cheapflights offers flight deals from Illinois to Shannon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to Shannon, Clare?

    Currently, November is the cheapest month in which you can book a flight from Illinois to Shannon, Clare (average of $492). Flying from Illinois to Shannon, Clare in June is currently the most expensive (average of $760). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Shannon?

Book flights to Shannon if you plan to visit one of these locations
Ennis

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Alternative routes for Illinois to Shannon

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Illinois to Shannon

Discover the top 3 airlines that operate flights from Illinois to Shannon. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated octobre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$544Average$804FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$597Average$845FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$736Average$1,042FlexibilityNo cancel feeOn-time70%

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