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Shannon

$259+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SNN
ene. 15 — ene. 221
jue. 1/15
jue. 1/22
1 adult, Economy
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Cheap 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 diciembre 16, 2025.

This Expedia deal was found by Cheapflights users on 12/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/244:05 pmSTL - SNN
2 stops37h 25mMultiple Airlines
lun. 1/58:05 pmSNN - STL
2 stops49h 24mMultiple Airlines
Deal found 12/15$963
This Ovago deal was found by Cheapflights users on 12/15. 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. 12/167:40 pmORD - SNN
2 stops15h 05mAer Lingus
mar. 12/238:05 pmSNN - ORD
1 stop28h 40mAer Lingus
Deal found 12/15$1,384
This Priceline deal was found by Cheapflights users on 12/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/166:35 pmORD - SNN
1 stop16h 10mMultiple Airlines
mar. 12/238:05 pmSNN - ORD
1 stop26h 55mMultiple Airlines
Deal found 12/15$1,413
This oojo deal was found by Cheapflights users on 12/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/158:35 pmORD - SNN
1 stop14h 10mBritish Airways
lun. 12/228:05 pmSNN - ORD
1 stop23h 45mBritish Airways
Deal found 12/14$1,563
This Ovago deal was found by Cheapflights users on 12/14. 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. 12/157:40 pmORD - SNN
2 stops15h 05mMultiple Airlines
lun. 12/228:05 pmSNN - ORD
1 stop25h 20mMultiple Airlines
Deal found 12/14$1,676
This FlightHub deal was found by Cheapflights users on 12/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/246:35 pmSTL - SNN
3 stops34h 55mAir Canada
lun. 1/57:50 amSNN - STL
3 stops19h 53mAir Canada
Deal found 12/15$1,996
This American Airlines deal was found by Cheapflights users on 12/15. 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.
mié. 12/246:00 pmSTL - SNN
2 stops40h 45mAmerican Airlines
lun. 1/52:45 pmSNN - STL
1 stop29h 38mAmerican Airlines
Deal found 12/15$2,571
This Ovago deal was found by Cheapflights users on 12/14. 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. 12/159:45 pmORD - SNN
1 stop13h 00mAer Lingus
lun. 12/228:05 pmSNN - ORD
1 stop23h 45mAer Lingus
Deal found 12/14$4,122

Find flight deals from Illinois to Shannon

Keep the following information in mind while searching for Illinois to Shannon flight deals. Data was last updated diciembre 16, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$470
(American Airlines)

One-way from

$259
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$1,141

Good round-trip deal

$598 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. 24% potential increase in price ($264 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 diciembre 16, 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

mar. 1/13

6:25 pm-11:30 am

1 stop11h 05m

Shannon

mar. 2/10

7:50 am-6:45 pm

1 stop16h 55m

$470

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

mar. 3/17

6:10 pm-11:30 am

1 stop12h 20m

Shannon

mar. 3/24

7:50 am-9:16 pm

2 stops18h 26m

$480

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

mar. 4/21

2:00 pm-10:15 am

2 stops14h 15m

Shannon

mar. 5/5

12:30 pm-7:22 pm

2 stops12h 52m

$493

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

dom. 4/26

8:00 am-10:15 am

2 stops20h 15m

Shannon

mié. 5/6

12:30 pm-8:17 pm

1 stop13h 47m

$493

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

lun. 4/27

12:59 pm-10:15 am

2 stops15h 16m

Shannon

mié. 5/6

12:30 pm-8:17 pm

1 stop13h 47m

$493

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

vie. 4/24

3:53 pm-11:20 am

2 stops13h 27m

Shannon

jue. 4/30

9:15 pm-2:40 pm

1 stop23h 25m

$526

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

sáb. 3/7

1:33 pm-11:30 am

2 stops15h 57m

Shannon

sáb. 3/14

7:50 am-10:52 pm

2 stops20h 02m

$666

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

vie. 2/6

4:05 pm-3:45 pm

2 stops17h 40m

Shannon

mar. 2/10

5:30 pm-3:29 pm

2 stops51h 59m

$683

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

mié. 1/14

3:54 pm-4:45 pm

2 stops18h 51m

Shannon

jue. 1/29

7:50 am-6:14 pm

2 stops16h 24m

$696

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

mar. 1/6

12:11 pm-11:30 am

2 stops41h 19m

Shannon

mar. 1/20

7:50 am-6:16 pm

2 stops16h 26m

$894

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 28 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 $473). 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 diciembre 16, 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 05m. 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 $673, our data shows the cheapest flight currently is $473. When looking at the most popular route, (Chicago O'Hare Intl - Shannon), you can expect to pay $488 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 $473). 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

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Top 2 airlines flying from Illinois to Shannon

Discover the top 2 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 diciembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$544Average$818FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$593Average$820FlexibilityNo cancel feeOn-time69%

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