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Cheap flights from Illinois to Shannon from $470

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Shannon departing on 4/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Illinois to Shannon

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
10:00 pm - 8:35 pm
STL
-
SNN
16h 35m1 stop
American Airlines Logo
9:15 pm - 7:30 pm
SNN
-
STL
28h 15m1 stop
$470American Airlines
Tue, Apr 21 - Tue, May 5
American Airlines Logo
10:35 pm - 8:35 pm
ORD
-
SNN
16h 00m1 stop
American Airlines Logo
9:15 pm - 3:55 pm
SNN
-
ORD
24h 40m1 stop
$470American Airlines
Mon, Apr 27 - Wed, May 6
American Airlines Logo
7:03 pm - 4:10 pm
STL
-
SNN
15h 07m2 stops
American Airlines Logo
7:40 am - 7:30 pm
SNN
-
STL
17h 50m1 stop
$474American Airlines
Tue, Apr 21 - Tue, May 5
American Airlines Logo
8:45 pm - 4:45 pm
ORD
-
SNN
14h 00m1 stop
American Airlines Logo
7:50 am - 8:04 pm
SNN
-
ORD
18h 14m2 stops
$476American Airlines
Tue, Jan 13 - Tue, Feb 10
American Airlines Logo
6:10 pm - 11:30 am
ORD
-
SNN
12h 20m1 stop
American Airlines Logo
7:50 am - 9:16 pm
SNN
-
ORD
18h 26m2 stops
$480American Airlines
Tue, Mar 17 - Tue, Mar 24
United Airlines Logo
12:59 pm - 10:15 am
ORD
-
SNN
15h 16m2 stops
United Airlines Logo
12:30 pm - 8:17 pm
SNN
-
ORD
13h 47m1 stop
$493United Airlines
Mon, Apr 27 - Wed, May 6
Air Canada Logo
4:05 pm - 3:45 pm
STL
-
SNN
17h 40m2 stops
Air Canada Logo
5:30 pm - 3:29 pm
SNN
-
STL
51h 59m2 stops
$683Air Canada
Fri, Feb 6 - Tue, Feb 10
Air Canada Logo
11:25 am - 11:20 am
STL
-
SNN
17h 55m3 stops
Air Canada Logo
9:15 pm - 8:05 pm
SNN
-
STL
28h 50m2 stops
$684Air Canada
Tue, Apr 21 - Tue, May 5
United Airlines Logo
5:20 pm - 10:15 am
STL
-
SNN
10h 55m1 stop
United Airlines Logo
12:30 pm - 7:48 pm
SNN
-
STL
13h 18m1 stop
$689United Airlines
Sat, Apr 18 - Sun, Apr 26
British Airways Logo
2:54 pm - 11:30 am
STL
-
SNN
14h 36m2 stops
British Airways Logo
7:50 am - 11:12 pm
SNN
-
STL
21h 22m2 stops
$696British Airways
Wed, Jan 14 - Thu, Jan 29

British Airways flights from Illinois to Shannon, Clare

Our best British Airways deals on Illinois to Shannon, Clare flight tickets
British Airways
Apr 7
ORD11:36 amChicago O'Hare Intl
17h 44m
2 stops
SNN11:20 amShannon
Apr 17
SNN7:40 amShannon
17h 20m
2 stops
ORD7:00 pmChicago O'Hare Intl
$627
Find similar
British Airways
Jan 13
ORD3:27 pmChicago O'Hare Intl
19h 18m
2 stops
SNN4:45 pmShannon
Feb 10
SNN7:50 amShannon
17h 25m
2 stops
ORD7:15 pmChicago O'Hare Intl
$639
Find similar
British Airways
Jan 9
ORD5:32 pmChicago O'Hare Intl
16h 13m
2 stops
SNN3:45 pmShannon
Jan 14
SNN8:05 pmShannon
29h 10m
2 stops
ORD7:15 pmChicago O'Hare Intl
$640
Find similar

American Airlines flights from Illinois to Shannon, Clare

Our best American Airlines deals on Illinois to Shannon, Clare flight tickets
American Airlines
Apr 21
STL10:00 pmLambert-St Louis
16h 35m
1 stop
SNN8:35 pmShannon
May 5
SNN9:15 pmShannon
28h 15m
1 stop
STL7:30 pmLambert-St Louis
$470
Find similar
American Airlines
Apr 21
STL7:03 pmLambert-St Louis
15h 07m
2 stops
SNN4:10 pmShannon
May 5
SNN7:40 amShannon
17h 50m
1 stop
STL7:30 pmLambert-St Louis
$474
Find similar
American Airlines
Jan 13
ORD8:45 pmChicago O'Hare Intl
14h 00m
1 stop
SNN4:45 pmShannon
Feb 10
SNN7:50 amShannon
18h 14m
2 stops
ORD8:04 pmChicago O'Hare Intl
$476
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to Shannon, Clare 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, momondo users made 832,500 searches. Data last updated December 17, 2025.
Use the filters below to find and compare flights from Illinois to Shannon, Clare that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 4/21

10:00 pm-8:35 pm

1 stop16h 35m

Shannon

Tue 5/5

9:15 pm-7:30 pm

1 stop28h 15m

$470

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Mon 4/27

10:35 pm-8:35 pm

1 stop16h 00m

Shannon

Wed 5/6

9:15 pm-3:55 pm

1 stop24h 40m

$470

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 4/21

7:03 pm-4:10 pm

2 stops15h 07m

Shannon

Tue 5/5

7:40 am-7:30 pm

1 stop17h 50m

$474

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Tue 1/13

8:45 pm-4:45 pm

1 stop14h 00m

Shannon

Tue 2/10

7:50 am-8:04 pm

2 stops18h 14m

$476

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Tue 3/17

6:10 pm-11:30 am

1 stop12h 20m

Shannon

Tue 3/24

7:50 am-9:16 pm

2 stops18h 26m

$480

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Mon 4/27

12:59 pm-10:15 am

2 stops15h 16m

Shannon

Wed 5/6

12:30 pm-8:17 pm

1 stop13h 47m

$493

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 2/6

4:05 pm-3:45 pm

2 stops17h 40m

Shannon

Tue 2/10

5:30 pm-3:29 pm

2 stops51h 59m

$683

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 4/21

11:25 am-11:20 am

3 stops17h 55m

Shannon

Tue 5/5

9:15 pm-8:05 pm

2 stops28h 50m

$684

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Sat 4/18

5:20 pm-10:15 am

1 stop10h 55m

Shannon

Sun 4/26

12:30 pm-7:48 pm

1 stop13h 18m

$689

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 1/14

2:54 pm-11:30 am

2 stops14h 36m

Shannon

Thu 1/29

7:50 am-11:12 pm

2 stops21h 22m

$696

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Shannon from

How to get the cheapest flight ticket from Illinois to Shannon, Clare

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Shannon, Clare?

The cheapest day to depart from Illinois to Shannon, Clare is on a Monday when prices can be found for as low as $726. The most expensive day to fly to Shannon, Clare is Friday, with ticket prices averaging around $918.

What is the cheapest time of day to depart on your flight to Shannon, Clare?

Our data shows that the cheapest Illinois to Shannon, Clare flights are usually those with departure times in the evening. Our users have found flights to Shannon, Clare in the evening for as low as $785. Flights in the morning are often more expensive with an average ticket price of $920.

What is the cheapest Illinois to Shannon flight route?

Fly from Chicago O'Hare Intl to Shannon for the best Illinois - Shannon flight prices

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

You are more likely to see cheaper flights to Shannon, Clare from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Shannon, Clare for around $817 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Shannon, Clare from Illinois for as low as $694 on momondo.

What cabin class options are available on Illinois to Shannon flights?

There are 3 cabin classes available to choose from on Illinois to Shannon flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Shannon, Clare flights?

You could potentially save up to 29% on your flight if you consider stops on a Illinois to Shannon, Clare flight.

Cheap Illinois to Shannon, Clare flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Shannon, Clare

Best Price Found

$598

Fastest flight time

7h 25m

Direct flights

None
The best flight deal from Illinois to Shannon, Clare found on momondo in the last 72 hours is $598
The fastest flight from Illinois to Shannon, Clare takes 7h 25m
There are no direct flights from Illinois to Shannon, Clare. There are no popular flight routes from Illinois to Shannon, Clare.
Search flight deals

  • When did momondo last update prices for flights from Illinois to Shannon Airport?

    Prices for flights from Illinois to Shannon Airport refresh daily.

  • How many operators does momondo search for flights from Illinois to Shannon Airport?

  • How old do you have to be to fly from Illinois to Shannon Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Shannon Airport.

  • What documentation or ID do you need to fly to Shannon Airport?

    The required travel and health documents for your Shannon Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Shannon Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Illinois to Shannon, Clare?

Best airlines flying from Illinois to Shannon, Clare

Compare and see reviews for airlines that fly from Illinois to Shannon, Clare with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $544Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
United AirlinesPriceFrom $593Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights

Traveling to a place near Shannon?

Book flights to Shannon if you plan to visit one of these locations
Limerick
Adare
Bunratty
Ennis
Nenagh
Lahinch

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Shannon?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Shannon for you.

Can I find flights from Illinois to Shannon with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to Shannon flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to Shannon?

momondo helps you find the best flight between Illinois and Shannon by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Illinois to Shannon right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Illinois to Shannon flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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