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Cheap flights from Ontario to Shannon from $506

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 1/21. 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 Ontario to Shannon

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:10 am - 4:45 pmONT-SNN
27h 35m2 stops
American Airlines Logo
2:00 pm - 10:29 pmSNN-ONT
40h 29m2 stops
$768American Airlines
Find Deal
Thu, Oct 30 - Mon, Nov 3
American Airlines Logo
6:00 am - 11:30 amONT-SNN
22h 30m2 stops
American Airlines Logo
9:15 pm - 10:02 pmSNN-ONT
32h 47m2 stops
$773American Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
British Airways Logo
12:46 pm - 3:45 pmONT-SNN
18h 59m2 stops
British Airways Logo
7:50 am - 10:29 pmSNN-ONT
22h 39m2 stops
$1,349British Airways
Find Deal
Fri, Nov 7 - Tue, Nov 11
American Airlines Logo
6:17 am - 5:55 amONT-SNN
15h 38m2 stops
American Airlines Logo
7:50 am - 10:49 pmSNN-ONT
22h 59m2 stops
$2,361American Airlines
Find Deal
Wed, Dec 17 - Wed, Jan 7

American Airlines flights from Ontario to Shannon, Clare

Our best American Airlines deals on Ontario to Shannon, Clare flight tickets
American Airlines
Oct 30
ONT6:10 amOntario
27h 35m
2 stops
SNN4:45 pmShannon
Nov 3
SNN2:00 pmShannon
40h 29m
2 stops
ONT10:29 pmOntario
$768
Find similar
American Airlines
Mar 27
ONT6:00 amOntario
22h 30m
2 stops
SNN11:30 amShannon
Mar 31
SNN9:15 pmShannon
32h 47m
2 stops
ONT10:02 pmOntario
$773
Find similar
American Airlines
Dec 17
ONT6:17 amOntario
15h 38m
2 stops
SNN5:55 amShannon
Jan 7
SNN7:50 amShannon
22h 59m
2 stops
ONT10:49 pmOntario
$2,361
Find similar

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 October 16, 2025.
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 10/30

6:10 am-4:45 pm

2 stops27h 35m

Shannon

Mon 11/3

2:00 pm-10:29 pm

2 stops40h 29m

$768

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Fri 3/27

6:00 am-11:30 am

2 stops22h 30m

Shannon

Tue 3/31

9:15 pm-10:02 pm

2 stops32h 47m

$773

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Fri 11/7

12:46 pm-3:45 pm

2 stops18h 59m

Shannon

Tue 11/11

7:50 am-10:29 pm

2 stops22h 39m

$1,349

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Wed 12/17

6:17 am-5:55 am

2 stops15h 38m

Shannon

Wed 1/7

7:50 am-10:49 pm

2 stops22h 59m

$2,361

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Wed 1/21

10:58 am-11:30 am

2 stops16h 32m

$506

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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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 day to depart on your flight to Shannon, Clare?

The cheapest day to depart from Ontario to Shannon, Clare is on a Friday when prices can be found for as low as $805. The most expensive day to fly to Shannon, Clare is Tuesday, with ticket prices averaging around $889.

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

Our data shows that the cheapest Ontario to Shannon, Clare flights are usually those with departure times in the afternoon. Our users have found flights to Shannon, Clare in the afternoon for as low as $744. Flights at noon are often more expensive with an average ticket price of $953.

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

Direct flights

None
There are no direct flights from Ontario to Shannon, Clare. There are no popular flight routes from Ontario to Shannon, Clare.
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  • 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
Ennis
Adare
Bunratty
Lahinch
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.

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