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Shannon

$272+ 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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SNN
sep. 10 — sep. 171
mié. 9/10
mié. 9/17
1 adult, Economy
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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 septiembre 5, 2025.

Round-trip from

$512
(Aunt Betty)

One-way from

$272
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$597

Good round-trip deal

$698 or less
From Illinois to Shannon
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One-way flight from Illinois to Shannon
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Highest demand for flights based on searches. 1% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Illinois to Shannon.
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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 septiembre 5, 2025.

This American Airlines deal was found by Cheapflights users on 9/3. 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.
dom. 10/1210:35 pmORD - SNN
1 stop11h 35mAmerican Airlines
mar. 10/217:40 amSNN - ORD
1 stop13h 00mAmerican Airlines
Deal found 9/3$513
This American Airlines deal was found by Cheapflights users on 9/3. 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.
mar. 12/305:10 pmORD - SNN
1 stop17h 35mAmerican Airlines
jue. 1/87:50 amSNN - ORD
1 stop13h 35mAmerican Airlines
Deal found 9/3$515
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/128:50 amORD - SNN
2 stops19h 25mUnited Airlines
mar. 10/2112:30 pmSNN - ORD
2 stops25h 09mUnited Airlines
Deal found 9/3$518
This Aunt Betty deal was found by Cheapflights users on 9/4. 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/146:00 pmORD - SNN
Nonstop7h 30mUnited Airlines
mar. 9/239:30 amSNN - ORD
Nonstop8h 15mUnited Airlines
Deal found 9/4$529
This Aunt Betty deal was found by Cheapflights users on 9/3. 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 Aunt Betty is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/156:00 pmORD - SNN
Nonstop7h 30mUnited Airlines
mar. 9/239:30 amSNN - ORD
Nonstop8h 15mUnited Airlines
Deal found 9/3$537
This United Airlines deal was found by Cheapflights users on 9/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/176:00 pmORD - SNN
Nonstop7h 30mUnited Airlines
mié. 9/249:30 amSNN - ORD
Nonstop8h 15mUnited Airlines
Deal found 9/4$541
This American Airlines deal was found by Cheapflights users on 9/4. 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. 9/174:55 pmORD - SNN
1 stop17h 15mAmerican Airlines
mié. 9/249:15 pmSNN - ORD
1 stop22h 40mAmerican Airlines
Deal found 9/4$544
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/148:20 amSTL - SNN
2 stops19h 55mUnited Airlines
mar. 9/239:30 amSNN - STL
1 stop15h 57mUnited Airlines
Deal found 9/3$581
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/135:30 pmSTL - SNN
1 stop32h 00mUnited Airlines
mar. 9/239:30 amSNN - STL
2 stops20h 14mUnited Airlines
Deal found 9/3$608
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/129:17 amSTL - SNN
1 stop16h 13mUnited Airlines
mié. 9/2412:30 pmSNN - STL
2 stops15h 46mUnited Airlines
Deal found 9/3$618
This United Airlines deal was found by Cheapflights users on 9/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/153:20 pmSTL - SNN
1 stop10h 10mUnited Airlines
mar. 9/239:30 amSNN - STL
1 stop10h 49mUnited Airlines
Deal found 9/3$638
This United Airlines deal was found by Cheapflights users on 9/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/155:22 pmSTL - SNN
1 stop10h 53mUnited Airlines
mié. 9/249:30 amSNN - STL
1 stop10h 49mUnited Airlines
Deal found 9/4$646

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 septiembre 5, 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

dom. 10/12

10:35 pm-4:10 pm

1 stop11h 35m

Shannon

mar. 10/21

7:40 am-2:40 pm

1 stop13h 00m

$513

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

mar. 12/30

5:10 pm-4:45 pm

1 stop17h 35m

Shannon

jue. 1/8

7:50 am-3:25 pm

1 stop13h 35m

$515

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

dom. 10/12

7:10 am-10:15 am

1 stop21h 05m

Shannon

mar. 10/21

12:30 pm-7:39 am

2 stops25h 09m

$518

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

lun. 9/15

6:02 pm-10:15 am

1 stop10h 13m

Shannon

mar. 9/23

9:30 am-11:45 am

Nonstop8h 15m

$537

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

mié. 9/17

6:00 pm-7:30 am

Nonstop7h 30m

Shannon

mié. 9/24

9:30 am-11:45 am

Nonstop8h 15m

$541

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

mié. 9/17

4:55 pm-4:10 pm

1 stop17h 15m

Shannon

mié. 9/24

9:15 pm-1:55 pm

1 stop22h 40m

$544

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

dom. 9/14

8:20 am-10:15 am

2 stops19h 55m

Shannon

mié. 9/24

9:30 am-10:16 pm

2 stops18h 46m

$581

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

dom. 9/14

8:20 am-10:15 am

2 stops19h 55m

Shannon

mar. 9/23

9:30 am-10:16 pm

2 stops18h 46m

$581

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

mar. 9/16

3:20 pm-7:30 am

1 stop10h 10m

Shannon

mar. 9/23

9:30 am-2:19 pm

1 stop10h 49m

$638

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

mié. 9/17

3:20 pm-7:30 am

1 stop10h 10m

Shannon

mié. 9/24

9:30 am-2:19 pm

1 stop10h 49m

$638

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/2

Showing 1-10 of 24 results
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2
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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, February is the cheapest month in which you can book a flight from Illinois to Shannon, Clare (average of $533). Flying from Illinois to Shannon, Clare in June is currently the most expensive (average of $927). 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 septiembre 5, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Shannon, Clare as you normally would.

Weekly flight availability from Illinois to Shannon, Clare

Explore weekly flight availability from Illinois to Shannon. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated septiembre 5, 2025.

The most flights from USIL to SNN are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

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 35m. 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 $840, our data shows the cheapest flight currently is $597. When looking at the most popular route, (Chicago O'Hare Intl - Shannon), you can expect to pay $518 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, February is the cheapest month in which you can book a flight from Illinois to Shannon, Clare (average of $533). Flying from Illinois to Shannon, Clare in June is currently the most expensive (average of $927). 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 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 septiembre 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$530Average$752FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$595Average$845FlexibilityNo cancel feeOn-time69%

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