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Cheap flights from Illinois to Shannon from €341

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Shannon departing on 6/4. 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 return flights

Enter your travel dates to find the best prices.
American Airlines Logo
22:00 - 20:35
STL
-
SNN
16h 35m1 stop
American Airlines Logo
07:40 - 19:30
SNN
-
STL
17h 50m1 stop
€401American Airlines
Tue, 21 Apr - Tue, 5 May
American Airlines Logo
22:35 - 20:35
ORD
-
SNN
16h 00m1 stop
American Airlines Logo
07:40 - 13:50
SNN
-
ORD
12h 10m1 stop
€401American Airlines
Tue, 21 Apr - Tue, 5 May
American Airlines Logo
19:03 - 16:10
STL
-
SNN
15h 07m2 stops
American Airlines Logo
07:40 - 19:30
SNN
-
STL
17h 50m1 stop
€404American Airlines
Tue, 21 Apr - Tue, 5 May
United Airlines Logo
14:00 - 10:15
ORD
-
SNN
14h 15m2 stops
United Airlines Logo
12:30 - 18:47
SNN
-
ORD
12h 17m1 stop
€420United Airlines
Tue, 21 Apr - Tue, 5 May
United Airlines Logo
16:30 - 10:15
ORD
-
SNN
11h 45m1 stop
United Airlines Logo
12:30 - 20:17
SNN
-
ORD
13h 47m1 stop
€458United Airlines
Mon, 27 Apr - Wed, 6 May
Lufthansa Logo
15:00 - 11:15
ORD
-
SNN
14h 15m1 stop
Lufthansa Logo
12:00 - 19:55
SNN
-
ORD
13h 55m1 stop
€493Lufthansa
Fri, 24 Apr - Sat, 2 May
Multiple Airlines Logo
16:05 - 16:45
STL
-
SNN
19h 40m2 stops
Multiple Airlines Logo
12:30 - 19:48
SNN
-
STL
13h 18m1 stop
€532Multiple Airlines
Wed, 25 Mar - Sat, 4 Apr
Air Canada Logo
16:05 - 11:30
STL
-
SNN
13h 25m2 stops
Air Canada Logo
07:50 - 15:29
SNN
-
STL
37h 39m2 stops
€561Air Canada
Thu, 8 Jan - Wed, 21 Jan
Multiple Airlines Logo
11:20 - 11:30
STL
-
SNN
18h 10m3 stops
Multiple Airlines Logo
20:05 - 15:29
SNN
-
STL
49h 24m2 stops
€581Multiple Airlines
Thu, 8 Jan - Wed, 21 Jan
Air Canada Logo
16:05 - 15:45
STL
-
SNN
17h 40m2 stops
Air Canada Logo
17:30 - 15:29
SNN
-
STL
51h 59m2 stops
€582Air Canada
Fri, 6 Feb - Tue, 10 Feb

American Airlines flights from Illinois to Shannon, Clare

Our best American Airlines deals on Illinois to Shannon, Clare flight tickets
American Airlines
21 Apr
STL22:00Lambert-St Louis
16h 35m
1 stop
SNN20:35Shannon
5 May
SNN07:40Shannon
17h 50m
1 stop
STL19:30Lambert-St Louis
€401
Find similar
American Airlines
21 Apr
STL19:03Lambert-St Louis
15h 07m
2 stops
SNN16:10Shannon
5 May
SNN07:40Shannon
17h 50m
1 stop
STL19:30Lambert-St Louis
€404
Find similar
American Airlines
21 Apr
STL18:29Lambert-St Louis
15h 41m
2 stops
SNN16:10Shannon
5 May
SNN07:40Shannon
18h 23m
2 stops
STL20:03Lambert-St Louis
€412
Find similar

United Airlines flights from Illinois to Shannon, Clare

Our best United Airlines deals on Illinois to Shannon, Clare flight tickets
United Airlines
21 Apr
ORD14:00Chicago O'Hare Intl
14h 15m
2 stops
SNN10:15Shannon
5 May
SNN12:30Shannon
12h 52m
2 stops
ORD19:22Chicago O'Hare Intl
€420
Find similar
United Airlines
27 Apr
ORD16:30Chicago O'Hare Intl
11h 45m
1 stop
SNN10:15Shannon
6 May
SNN12:30Shannon
13h 47m
1 stop
ORD20:17Chicago O'Hare Intl
€458
Find similar
United Airlines
14 Apr
ORD16:30Chicago O'Hare Intl
11h 45m
1 stop
SNN10:15Shannon
21 Apr
SNN12:30Shannon
11h 46m
1 stop
ORD18:16Chicago O'Hare Intl
€501
Find similar

momondo Fare Finder

 
Customise 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 13,528 searches. Data last updated 18 December 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 21/4

22:00-20:35

1 stop16h 35m

Shannon

Tue 5/5

07:40-19:30

1 stop17h 50m

€401

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Tue 21/4

22:35-20:35

1 stop16h 00m

Shannon

Tue 5/5

07:40-13:50

1 stop12h 10m

€401

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Tue 21/4

19:03-16:10

2 stops15h 07m

Shannon

Tue 5/5

07:40-19:30

1 stop17h 50m

€404

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Tue 21/4

14:00-10:15

2 stops14h 15m

Shannon

Tue 5/5

12:30-18:47

1 stop12h 17m

€420

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Mon 27/4

16:30-10:15

1 stop11h 45m

Shannon

Wed 6/5

12:30-20:17

1 stop13h 47m

€458

ChicagoShannon

ORD - SNN

ORDSNN

Chicago O'Hare Intl

Fri 24/4

15:00-11:15

1 stop14h 15m

Shannon

Sat 2/5

12:00-19:55

1 stop13h 55m

€493

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Wed 25/3

16:05-16:45

2 stops19h 40m

Shannon

Sat 4/4

12:30-19:48

1 stop13h 18m

€532

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 8/1

16:05-11:30

2 stops13h 25m

Shannon

Wed 21/1

07:50-15:29

2 stops37h 39m

€561

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Thu 8/1

11:20-11:30

3 stops18h 10m

Shannon

Wed 21/1

20:05-15:29

2 stops49h 24m

€581

St. LouisShannon

STL - SNN

STLSNN

Lambert-St Louis

Fri 6/2

16:05-15:45

2 stops17h 40m

Shannon

Tue 10/2

17:30-15:29

2 stops51h 59m

€582

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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 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 €696 when searching weeks before you fly. 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 €591 on momondo.

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

There is only 1 cabin class 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.

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

Fastest flight time

7h 25m

Direct flights

Every day

Airports in Shannon, Clare

1 airport
The fastest flight from Illinois to Shannon, Clare takes 7h 25m
Direct flights go from Illinois to Shannon, Clare every day.
There is 1 airport in Shannon, Clare. From Illinois there are direct flights to Shannon (SNN).
Search flight deals

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

    Prices for flights from Illinois to Shannon Airport are refreshed on a daily basis.

  • 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 stopovers. 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 necessary travel and health documents for your Shannon Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Travelling to a place near Shannon?

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

Why use momondo?

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

Finding the right flight to Shannon from Illinois is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Shannon quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to Shannon from Illinois with this policy.

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

Once you have performed a search for Illinois to Shannon flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to Shannon from Illinois are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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