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 $413. Users have also found prices from $437 and $444 on American Airlines and KLM, 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 $3,725, our data shows the cheapest flight currently is $394. When looking at the most popular route, (Chicago O'Hare Intl - Shannon), you can expect to pay $522 for that flight.

How far in advance should I book a flight from Illinois to Shannon, Clare?

Find a great deal and save up to 80% by booking at least 41 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Illinois to Shannon, Clare within the next two weeks, with the cheapest ticket starting at $539.

What is the cheapest month to fly from Illinois to Shannon, Clare?

Flights from Illinois to Shannon, Clare lean towards being more expensive in December. Prices are generally better when you fly from Illinois to Shannon, Clare in September, with the cheapest ticket starting at $526.

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.

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.

$268+ Flights from Illinois to Shannon

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Cheap flight deals from Illinois to Shannon

Most accurate provider	AranGrant 3 stars
Most trusted provider	AranGrant 3 stars
Round-trip from	$494 (American Airlines)
One-way from	$268 (Kiwi.com)
Popular in	December
Cheapest in	September
Average price	$825
Good round-trip deal	$721 or less
Good one-way deal	$513 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. 0% potential increase in price ($5 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($33 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 2025

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Price to beat on a round-trip flight from Illinois to Shannon.

Search Deals

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 May 1, 2025.

Wed 8/135:45 pmORD - SNN

1 stop16h 25mAmerican Airlines

Wed 8/209:15 pmSNN - ORD

1 stop20h 35mAmerican Airlines

Deal found 4/30

$494

Tue 8/56:05 pmORD - SNN

Nonstop7h 25mUnited Airlines

Tue 8/199:30 amSNN - ORD

Nonstop8h 15mUnited Airlines

Deal found 4/30

$522

Wed 9/36:10 pmORD - SNN

1 stop11h 00mDelta

Fri 9/121:05 pmSNN - ORD

1 stop13h 46mDelta

Deal found 5/1

$612

Wed 8/1311:19 amORD - SNN

2 stops17h 51mKLM

Wed 8/201:05 pmSNN - ORD

2 stops16h 50mKLM

Deal found 4/30

$631

Wed 7/235:14 pmSTL - SNN

2 stops16h 56mAmerican Airlines

Mon 8/47:40 amSNN - STL

2 stops17h 34mAmerican Airlines

Deal found 4/30

$637

Tue 7/227:17 amORD - SNN

1 stop16h 08mMultiple Airlines

Wed 7/301:45 pmSNN - ORD

1 stop11h 45mMultiple Airlines

Deal found 4/29

$647

Tue 5/2710:05 amSTL - SNN

2 stops19h 05mDelta

Wed 6/181:05 pmSNN - STL

2 stops26h 38mDelta

Deal found 5/1

$665

Mon 7/218:00 amSTL - SNN

1 stop17h 30mUnited Airlines

Fri 8/19:30 amSNN - STL

1 stop19h 15mUnited Airlines

Deal found 5/1

$678

Tue 8/59:15 pmORD - SNN

2 stops17h 20mAer Lingus

Wed 8/209:15 pmSNN - ORD

2 stops22h 45mAer Lingus

Deal found 4/30

$693

Thu 5/2912:48 pmMDW - SNN

2 stops16h 22mAir France

Thu 6/51:05 pmSNN - MDW

2 stops34h 31mAir France

Deal found 5/1

$771

Sun 6/226:27 pmORD - SNN

1 stop10h 43mAir France

Thu 7/31:05 pmSNN - ORD

1 stop14h 38mAir France

Deal found 5/1

$775

Sun 6/16:31 pmMDW - SNN

2 stops34h 39mMultiple Airlines

Tue 6/101:05 pmSNN - MDW

2 stops35h 36mMultiple Airlines

Deal found 4/30

$852

Best flights from Illinois to Shannon
Discover carefully curated flight deals from Illinois to Shannon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 1, 2025.

Wed 8/135:45 pmORD - SNN

1 stop16h 25mAmerican Airlines

Wed 8/209:15 pmSNN - ORD

1 stop20h 35mAmerican Airlines

Deal found 4/30

$494

Tue 8/56:05 pmORD - SNN

Nonstop7h 25mUnited Airlines

Tue 8/199:30 amSNN - ORD

Nonstop8h 15mUnited Airlines

Deal found 4/30

$522

Wed 9/36:10 pmORD - SNN

1 stop11h 00mDelta

Fri 9/121:05 pmSNN - ORD

1 stop13h 46mDelta

Deal found 5/1

$612

Wed 8/1311:19 amORD - SNN

2 stops17h 51mKLM

Wed 8/201:05 pmSNN - ORD

2 stops16h 50mKLM

Deal found 4/30

$631

Tue 7/227:17 amORD - SNN

1 stop16h 08mMultiple Airlines

Wed 7/301:45 pmSNN - ORD

1 stop11h 45mMultiple Airlines

Deal found 4/29

$647

Tue 8/59:15 pmORD - SNN

2 stops17h 20mAer Lingus

Tue 8/199:15 pmSNN - ORD

2 stops22h 45mAer Lingus

Deal found 4/30

$693

Thu 5/2912:48 pmMDW - SNN

2 stops16h 22mAir France

Thu 6/51:05 pmSNN - MDW

2 stops34h 31mAir France

Deal found 5/1

$771

Tue 7/291:17 pmSTL - SNN

2 stops16h 03mBritish Airways

Mon 8/117:40 amSNN - STL

2 stops17h 28mBritish Airways

Deal found 5/1

$882

Mon 7/711:25 amSTL - SNN

1 stop16h 50mLufthansa

Fri 7/1812:30 pmSNN - STL

1 stop14h 35mLufthansa

Deal found 5/1

$982

Tue 5/271:30 pmSTL - SNN

2 stops20h 40mAir Canada

Wed 6/187:40 amSNN - STL

3 stops21h 05mAir Canada

Deal found 4/30

$1,069

Wed 7/235:14 pmSTL - SNN

2 stops16h 56mAmerican Airlines

Mon 8/47:40 amSNN - STL

2 stops17h 34mAmerican Airlines

Deal found 4/30

$637

Tue 5/2710:05 amSTL - SNN

2 stops19h 05mDelta

Wed 6/181:05 pmSNN - STL

2 stops26h 38mDelta

Deal found 5/1

$665

Last-minute flights from Illinois to Shannon
Discover last-minute flight deals from Illinois to Shannon. Data last updated May 1, 2025 and is based on user searches.

Thu 5/17:25 pmORD - SNN

2 stops13h 45mMultiple Airlines

Thu 5/810:50 amSNN - ORD

2 stops18h 39mMultiple Airlines

Deal found 4/30

$883

Wed 5/79:15 pmORD - SNN

2 stops17h 20mAer Lingus

Thu 5/159:15 pmSNN - ORD

2 stops22h 45mAer Lingus

Deal found 4/30

$768

Wed 5/710:25 pmORD - SNN

1 stop11h 45mAmerican Airlines

Thu 5/159:15 pmSNN - ORD

1 stop20h 30mAmerican Airlines

Deal found 4/30

$790

Thu 5/81:29 pmORD - SNN

2 stops14h 46mUnited Airlines

Thu 5/1512:30 pmSNN - ORD

2 stops25h 10mUnited Airlines

Deal found 5/1

$799

Thu 5/87:25 pmORD - SNN

2 stops19h 25mMultiple Airlines

Thu 5/1510:50 amSNN - ORD

3 stops28h 05mMultiple Airlines

Deal found 5/1

$931

Fri 5/165:00 amSTL - SNN

2 stops48h 20mBritish Airways

Sat 6/75:30 pmSNN - STL

2 stops36h 24mBritish Airways

Deal found 5/1

$1,013

Tue 5/2012:00 pmORD - SNN

2 stops17h 20mAir Canada

Tue 6/249:15 pmSNN - ORD

2 stops23h 26mAir Canada

Deal found 5/1

$985

Tue 5/278:30 pmORD - SNN

1 stop18h 05mAmerican Airlines

Tue 6/39:15 pmSNN - ORD

1 stop25h 30mAmerican Airlines

Deal found 4/29

$634

Tue 5/2710:05 amSTL - SNN

2 stops19h 05mDelta

Wed 6/181:05 pmSNN - STL

2 stops26h 38mDelta

Deal found 5/1

$665

Tue 5/272:20 pmSTL - SNN

2 stops15h 00mAmerican Airlines

Wed 6/187:40 amSNN - STL

2 stops18h 39mAmerican Airlines

Deal found 4/30

$667

Tue 5/276:05 pmORD - SNN

Nonstop7h 25mUnited Airlines

Tue 6/39:30 amSNN - ORD

Nonstop8h 15mUnited Airlines

Deal found 4/29

$723

Tue 5/2711:07 amORD - SNN

2 stops18h 03mKLM

Tue 6/31:05 pmSNN - ORD

2 stops31h 42mKLM

Deal found 4/29

$748

One-way flights from Illinois to Shannon
Search for one-way flight options from Illinois to Shannon. Find affordable one-way fares based on user searches. Data last updated May 1, 2025.

Wed 8/67:25 pmORD - SNN

2 stops20h 00mMultiple Airlines

Deal found 4/30

$268

Wed 7/235:40 pmSTL - SNN

2 stops45h 10mMultiple Airlines

Deal found 4/30

$313

Fri 6/69:12 pmMDW - SNN

3 stops54h 18mMultiple Airlines

Deal found 4/30

$372

Wed 7/2311:25 amSTL - SNN

1 stop14h 05mUnited Airlines

Deal found 4/30

$413

Sun 8/108:35 pmORD - SNN

1 stop18h 00mAmerican Airlines

Deal found 5/1

$437

Wed 8/66:05 pmORD - SNN

Nonstop7h 25mUnited Airlines

Deal found 4/30

$439

Sun 8/1011:19 amORD - SNN

2 stops17h 51mKLM

Deal found 5/1

$444

Tue 5/131:38 pmSTL - SNN

2 stops15h 42mAmerican Airlines

Deal found 4/30

$491

Sat 7/123:45 pmORD - SNN

2 stops18h 20mAer Lingus

Deal found 4/30

$496

Tue 7/11:31 pmORD - SNN

1 stop15h 39mDelta

Deal found 4/30

$579

Mon 6/910:48 amSTL - SNN

2 stops18h 22mKLM

Deal found 4/30

$618

Sun 6/812:44 pmMDW - SNN

2 stops16h 26mDelta

Deal found 5/1

$633

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Shannon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Wed 8/13

5:45 pm-4:10 pm

1 stop16h 25m

Shannon

Wed 8/20

9:15 pm-11:50 am

1 stop20h 35m

$494

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Tue 8/5

6:05 pm-7:30 am

Nonstop7h 25m

Shannon

Tue 8/19

9:30 am-11:45 am

Nonstop8h 15m

$522

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Wed 9/3

6:10 pm-11:10 am

1 stop11h 00m

Shannon

Fri 9/12

1:05 pm-8:51 pm

1 stop13h 46m

$612

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Wed 8/13

11:19 am-11:10 am

2 stops17h 51m

Shannon

Wed 8/20

1:05 pm-11:55 pm

2 stops16h 50m

$631

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 7/23

5:14 pm-4:10 pm

2 stops16h 56m

Shannon

Mon 8/4

7:40 am-7:14 pm

2 stops17h 34m

$637

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Tue 7/22

7:17 am-5:25 am

1 stop16h 08m

Shannon

Wed 7/30

1:45 pm-7:30 pm

1 stop11h 45m

$647

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 5/27

10:05 am-11:10 am

2 stops19h 05m

Shannon

Wed 6/18

1:05 pm-9:43 am

2 stops26h 38m

$665

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Mon 7/21

8:00 am-7:30 am

1 stop17h 30m

Shannon

Fri 8/1

9:30 am-10:45 pm

1 stop19h 15m

$678

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Tue 8/5

9:15 pm-8:35 pm

2 stops17h 20m

Shannon

Tue 8/19

9:15 pm-2:00 pm

2 stops22h 45m

$693

ChicagoShannon

MDW - SNN

MDWSNN

Chicago Midway

Thu 5/29

12:48 pm-11:10 am

2 stops16h 22m

Shannon

Thu 6/5

1:05 pm-5:36 pm

2 stops34h 31m

$771

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 30 results

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 $995). 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?

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

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

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

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

7,934 reviews

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

7,934 reviews

Delta

8.0

Very good

7,934 reviews

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

1,334 reviews

Delta

8.0

Very good

7,934 reviews

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

1,448 reviews

Delta

8.0

Very good

7,934 reviews

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

8,696 reviews

Delta

8.0

Very good

7,934 reviews

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

7,934 reviews

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

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 $413. Users have also found prices from $437 and $444 on American Airlines and KLM, 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 $3,725, our data shows the cheapest flight currently is $394. When looking at the most popular route, (Chicago O'Hare Intl - Shannon), you can expect to pay $522 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 $995). 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

Ennis

Browse thousands of different options on Cheapflights for your next trip

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Other flights to Shannon

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Top 2 airlines flying from Illinois to Shannon

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$509	Average$751	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$526	Average$836	FlexibilityNo cancel fee	On-time69%

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$268+ 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 8/6. Fares are subject to change and may not be available on all flights or dates of travel.

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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 May 1, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Illinois to Shannon

Cheapest flights from Illinois to ShannonExplore 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 May 1, 2025.

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 May 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Shannon that are best for you.

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.

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?

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 May 1, 2025.

Rainfall in Shannon by month

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

Temperature in Shannon by month

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

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 May 1, 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.

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?

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

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

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

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

How can I find direct flights from Illinois to Shannon?

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

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

Traveling to a place near Illinois?

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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.

Top 2 airlines flying from Illinois to Shannon

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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 May 1, 2025.