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Cheap flights from Ontario to Shannon from $230

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Shannon departing on 5/5. 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 Ontario to Shannon

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
10:37 am - 10:15 am
ONT
-
SNN
15h 38m
2 stops
United Airlines Logo
12:30 pm - 10:59 pm
SNN
-
ONT
18h 29m
2 stops
$709United Airlines
Thu, May 7 - Mon, May 11
British Airways Logo
2:08 pm - 4:10 pm
ONT
-
SNN
18h 02m
2 stops
British Airways Logo
9:15 pm - 4:22 pm
SNN
-
ONT
27h 07m
2 stops
$757British Airways
Sun, Apr 26 - Mon, May 18
British Airways Logo
6:00 am - 4:45 pm
ONT
-
SNN
26h 45m
2 stops
British Airways Logo
8:05 pm - 6:42 pm
SNN
-
ONT
29h 37m
2 stops
$778British Airways
Thu, Mar 5 - Mon, Mar 9
British Airways Logo
12:19 pm - 11:20 am
ONT
-
SNN
39h 01m
2 stops
British Airways Logo
5:25 pm - 6:37 pm
SNN
-
ONT
33h 12m
2 stops
$798British Airways
Fri, Apr 24 - Sat, May 2
United Airlines Logo
7:00 am - 7:30 am
ONT
-
SNN
16h 30m
1 stop
United Airlines Logo
9:30 am - 8:17 pm
SNN
-
ONT
18h 47m
2 stops
$807United Airlines
Thu, Jul 9 - Thu, Jul 16
United Airlines Logo
7:00 am - 7:30 am
ONT
-
SNN
16h 30m
1 stop
United Airlines Logo
9:30 am - 8:17 pm
SNN
-
ONT
18h 47m
2 stops
$808United Airlines
Thu, Jul 9 - Thu, Jul 16
United Airlines Logo
7:00 am - 7:30 am
ONT
-
SNN
16h 30m
1 stop
United Airlines Logo
9:30 am - 10:28 pm
SNN
-
ONT
20h 58m
1 stop
$833United Airlines
Thu, Jul 9 - Thu, Jul 16
United Airlines Logo
5:55 am - 10:15 am
ONT
-
SNN
20h 20m
2 stops
United Airlines Logo
9:30 am - 8:17 pm
SNN
-
ONT
18h 47m
2 stops
$837United Airlines
Thu, Jul 9 - Thu, Jul 16
United Airlines Logo
1:00 pm - 7:30 am
ONT
-
SNN
34h 30m
2 stops
United Airlines Logo
9:30 am - 8:17 pm
SNN
-
ONT
18h 47m
2 stops
$852United Airlines
Thu, Jul 9 - Thu, Jul 16
United Airlines Logo
7:00 am - 10:15 am
ONT
-
SNN
19h 15m
2 stops
United Airlines Logo
12:30 pm - 9:58 pm
SNN
-
ONT
17h 28m
2 stops
$1,048United Airlines
Fri, Apr 24 - Sat, May 2

United Airlines flights from Ontario to Shannon, Clare

Our best United Airlines deals on Ontario to Shannon, Clare flight tickets
United Airlines
May 7
ONT10:37 amOntario
15h 38m
2 stops
SNN10:15 amShannon
May 11
SNN12:30 pmShannon
18h 29m
2 stops
ONT10:59 pmOntario
$709
United Airlines
Jul 9
ONT7:00 amOntario
16h 30m
1 stop
SNN7:30 amShannon
Jul 16
SNN9:30 amShannon
18h 47m
2 stops
ONT8:17 pmOntario
$807
United Airlines
Jul 9
ONT7:00 amOntario
16h 30m
1 stop
SNN7:30 amShannon
Jul 16
SNN9:30 amShannon
18h 47m
2 stops
ONT8:17 pmOntario
$808

British Airways flights from Ontario to Shannon, Clare

Our best British Airways deals on Ontario to Shannon, Clare flight tickets
British Airways
Apr 26
ONT2:08 pmOntario
18h 02m
2 stops
SNN4:10 pmShannon
May 18
SNN9:15 pmShannon
27h 07m
2 stops
ONT4:22 pmOntario
$757
British Airways
Mar 5
ONT6:00 amOntario
26h 45m
2 stops
SNN4:45 pmShannon
Mar 9
SNN8:05 pmShannon
29h 37m
2 stops
ONT6:42 pmOntario
$778
British Airways
Apr 24
ONT12:19 pmOntario
39h 01m
2 stops
SNN11:20 amShannon
May 2
SNN5:25 pmShannon
33h 12m
2 stops
ONT6:37 pmOntario
$798

momondo Fare Finder

 
Customize your flight search to find flights from Ontario 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 February 4, 2026.
Use the filters below to find and compare flights from Ontario to Shannon, Clare that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 5/7

10:37 am-10:15 am

2 stops15h 38m

Shannon

Mon 5/11

12:30 pm-10:59 pm

2 stops18h 29m

$709

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Sun 4/26

2:08 pm-4:10 pm

2 stops18h 02m

Shannon

Mon 5/18

9:15 pm-4:22 pm

2 stops27h 07m

$757

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 3/5

6:00 am-4:45 pm

2 stops26h 45m

Shannon

Mon 3/9

8:05 pm-6:42 pm

2 stops29h 37m

$778

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Fri 4/24

12:19 pm-11:20 am

2 stops39h 01m

Shannon

Sat 5/2

5:25 pm-6:37 pm

2 stops33h 12m

$798

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 7/9

7:00 am-7:30 am

1 stop16h 30m

Shannon

Thu 7/16

9:30 am-8:17 pm

2 stops18h 47m

$807

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 7/9

7:00 am-7:30 am

1 stop16h 30m

Shannon

Thu 7/16

9:30 am-8:17 pm

2 stops18h 47m

$808

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 7/9

7:00 am-7:30 am

1 stop16h 30m

Shannon

Thu 7/16

9:30 am-10:28 pm

1 stop20h 58m

$833

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 7/9

5:55 am-10:15 am

2 stops20h 20m

Shannon

Thu 7/16

9:30 am-8:17 pm

2 stops18h 47m

$837

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 7/9

1:00 pm-7:30 am

2 stops34h 30m

Shannon

Thu 7/16

9:30 am-8:17 pm

2 stops18h 47m

$852

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Fri 4/24

7:00 am-10:15 am

2 stops19h 15m

Shannon

Sat 5/2

12:30 pm-9:58 pm

2 stops17h 28m

$1,048

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to Shannon from

How to get the cheapest flight ticket from Ontario 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 airline that flies from Ontario to Shannon?

United Airlines and British Airways are the most popular carriers operating from Ontario to Shannon

What airlines fly to Shannon, Clare?

American Airlines, United Airlines and Delta are the top three most popular airlines that fly to Shannon, Clare from Ontario according to our data. American Airlines is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Shannon, Clare. Keep in mind that there are 4 different airlines that fly to Shannon, Clare on a routine basis, so you have a few additional options to choose from.

When to book flights from Ontario to Shannon, Clare

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Shannon, Clare according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Shannon, Clare (ONT to SNN) flight deals and tips

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

Fastest flight time

15h 38m

Direct flights

None
The fastest flight from Ontario to Shannon, Clare takes 15h 38m
There are no direct flights from Ontario to Shannon, Clare. There are no popular flight routes from Ontario to Shannon, Clare.
Search flight deals

  • How far is Ontario to Shannon by plane?

    There are 5075.2 mi between Ontario and Shannon. A reasonable flight in good conditions will take 15h 38m.

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

    Prices for flights from Ontario Airport to Shannon Airport are updated daily.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport 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 license 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.

Traveling to a place near Shannon?

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

Why use momondo?

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

Finding the right flight to Shannon from Ontario 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 Ontario to Shannon with flexible booking policies on momondo?

Yes. All flights to Shannon from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Shannon.

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

If you are simply researching potential flights to Shannon, momondo offers a useful price alert feature which will track prices for flights to Shannon from Ontario and alert you when they change.

An easier way to manage your Shannon, Clare trip

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