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Shannon

$349+ 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 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SNN
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
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 March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$655
(American Airlines)

One-way from

$349
(Mytrip)

Popular in

December

Cheapest in

February

Average price

$726

Good round-trip deal

$800 or less

Good one-way deal

$513 or less
Provider with most accurate pricing for Chicago (CHI)-Shannon flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Shannon flights.
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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. 0% potential increase in price ($2 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Illinois to Shannon.
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Price to beat on a one-way 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 March 31, 2025.

This American Airlines deal was found by Cheapflights users on 3/30. 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.
Wed 5/141:59 pmSTL - SNN
2 stops15h 21mAmerican Airlines
Wed 5/217:40 amSNN - STL
2 stops17h 43mAmerican Airlines
Deal found 3/30$655
This United Airlines deal was found by Cheapflights users on 3/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/84:45 pmORD - SNN
1 stop11h 30mUnited Airlines
Thu 10/1612:30 pmSNN - ORD
1 stop14h 02mUnited Airlines
Deal found 3/30$656
This Mytrip deal was found by Cheapflights users on 3/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/316:35 pmORD - SNN
2 stops20h 10mMultiple Airlines
Mon 4/75:40 pmSNN - ORD
2 stops28h 15mMultiple Airlines
Deal found 3/30$672
This United Airlines deal was found by Cheapflights users on 3/31. 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.
Mon 7/148:00 amSTL - SNN
1 stop17h 30mUnited Airlines
Fri 7/259:30 amSNN - STL
1 stop19h 15mUnited Airlines
Deal found 3/31$704
This KLM deal was found by Cheapflights users on 3/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/251:30 pmORD - SNN
1 stop15h 40mKLM
Tue 6/31:05 pmSNN - ORD
2 stops31h 42mKLM
Deal found 3/30$731
This American Airlines deal was found by Cheapflights users on 3/30. 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.
Wed 5/78:30 pmORD - SNN
1 stop18h 05mAmerican Airlines
Thu 5/157:40 amSNN - ORD
1 stop15h 20mAmerican Airlines
Deal found 3/30$732
This Bravofly deal was found by Cheapflights users on 3/30. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/254:15 pmMDW - SNN
2 stops36h 55mMultiple Airlines
Tue 6/31:05 pmSNN - MDW
2 stops38h 22mMultiple Airlines
Deal found 3/30$765
This Delta deal was found by Cheapflights users on 3/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/286:45 amSTL - SNN
2 stops22h 25mDelta
Sun 6/151:05 pmSNN - STL
2 stops16h 37mDelta
Deal found 3/30$778
This Gotogate deal was found by Cheapflights users on 3/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/141:30 pmSTL - SNN
2 stops20h 40mMultiple Airlines
Wed 5/2112:30 pmSNN - STL
1 stop17h 07mMultiple Airlines
Deal found 3/30$826
This Aeromexico deal was found by Cheapflights users on 3/30. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/245:15 pmORD - SNN
2 stops35h 55mAir France
Tue 6/31:05 pmSNN - ORD
2 stops35h 32mAir France
Deal found 3/30$866
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/161:31 pmORD - SNN
1 stop15h 39mDelta
Sat 7/261:05 pmSNN - ORD
1 stop14h 29mDelta
Deal found 3/31$876
This KLM deal was found by Cheapflights users on 3/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/301:09 pmSTL - SNN
2 stops16h 01mKLM
Sun 6/151:05 pmSNN - STL
2 stops16h 37mKLM
Deal found 3/30$880

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 March 31, 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

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 5/14

1:59 pm-11:20 am

2 stops15h 21m

Shannon

Wed 5/21

7:40 am-7:23 pm

2 stops17h 43m

$655

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 7/14

8:00 am-7:30 am

1 stop17h 30m

Shannon

Fri 7/25

9:30 am-10:45 pm

1 stop19h 15m

$704

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Sun 5/25

1:30 pm-11:10 am

1 stop15h 40m

Shannon

Tue 6/3

1:05 pm-2:47 pm

2 stops31h 42m

$731

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Wed 5/7

8:30 pm-8:35 pm

1 stop18h 05m

Shannon

Thu 5/15

7:40 am-5:00 pm

1 stop15h 20m

$732

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Wed 5/7

1:29 pm-10:15 am

2 stops14h 46m

Shannon

Thu 5/15

12:30 pm-6:40 pm

1 stop12h 10m

$740

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Tue 5/20

9:55 am-8:20 pm

2 stops28h 25m

Shannon

Thu 5/29

10:50 am-8:55 am

3 stops28h 05m

$759

ChicagoShannon

MDW - SNN

MDWSNN

Chicago Midway

Sun 5/25

4:15 pm-11:10 am

2 stops36h 55m

Shannon

Tue 6/3

1:05 pm-9:27 pm

2 stops38h 22m

$765

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 5/28

6:45 am-11:10 am

2 stops22h 25m

Shannon

Sun 6/15

1:05 pm-11:42 pm

2 stops16h 37m

$778

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 5/14

1:30 pm-4:10 pm

2 stops20h 40m

Shannon

Wed 5/21

12:30 pm-11:37 pm

1 stop17h 07m

$826

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 5/29

1:09 pm-11:10 am

2 stops16h 01m

Shannon

Sun 6/15

1:05 pm-11:42 pm

2 stops16h 37m

$829

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/30

Showing 1-10 of 34 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, 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 $1,007). 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 March 31, 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.

Rainfall in Shannon by month

Plan your trip to Shannon by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Shannon, Clare ranges from 2.3 - 4.1 inches per month. October is typically the wettest month, when rainfall can reach 4.1 in. April is typically the driest time to visit Shannon, Clare when rainfall is around 2.3 in.

Temperature in Shannon by month

Plan your trip to Shannon by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Shannon, Clare, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 60.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

Reviews of airlines servicing Shannon

Get insights into the airlines that provide service to Shannon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Shannon. Reviews last updated March 31, 2025.
Read reviews from past customers who have flown Delta, KLM and Air France from Illinois to Shannon. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,425 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,614 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines to fly from Illinois to Shannon, Clare one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $493. Users have also found prices from $588 and $633 on Aer Lingus and American Airlines, respectively.

  • 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 $3,838, our data shows the cheapest flight currently is $513. When looking at the most popular route, (Chicago O'Hare Intl - Shannon), you can expect to pay $672 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 $1,007). 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

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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 March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$509Average$738FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$526Average$850FlexibilityNo cancel feeOn-time69%
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