Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from Ontario to Shannon from $315

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 9/9. 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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Ontario to Shannon

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:00 am - 7:30 am
ONT
-
SNN
16h 30m
1 stop
United Airlines Logo
9:30 am - 6:19 pm
SNN
-
ONT
16h 49m
1 stop
$681United Airlines
Sun, Aug 16 - Thu, Sep 3
United Airlines Logo
7:13 pm - 7:30 am
ONT
-
SNN
28h 17m
2 stops
United Airlines Logo
9:30 am - 6:19 pm
SNN
-
ONT
16h 49m
1 stop
$685United Airlines
Sat, Aug 15 - Wed, Sep 2
United Airlines Logo
7:13 pm - 7:30 am
ONT
-
SNN
28h 17m
2 stops
United Airlines Logo
9:30 am - 12:38 pm
SNN
-
ONT
35h 08m
2 stops
$696United Airlines
Sat, Aug 15 - Fri, Sep 4
United Airlines Logo
7:00 am - 7:30 am
ONT
-
SNN
16h 30m
1 stop
United Airlines Logo
9:30 am - 6:19 pm
SNN
-
ONT
16h 49m
1 stop
$719United Airlines
Thu, Aug 20 - Thu, Sep 3
United Airlines Logo
5:45 am - 10:15 am
ONT
-
SNN
20h 30m
2 stops
United Airlines Logo
9:30 am - 6:19 pm
SNN
-
ONT
16h 49m
1 stop
$723United Airlines
Fri, Aug 21 - Tue, Aug 25
Delta Logo
10:59 pm - 11:10 am
ONT
-
SNN
52h 11m
2 stops
Delta Logo
1:05 pm - 11:04 am
SNN
-
ONT
29h 59m
2 stops
$724Delta
Fri, Aug 21 - Fri, Sep 4
Delta Logo
10:59 pm - 11:10 am
ONT
-
SNN
52h 11m
2 stops
Delta Logo
1:05 pm - 6:01 pm
SNN
-
ONT
36h 56m
2 stops
$730Delta
Fri, Aug 21 - Thu, Sep 3
United Airlines Logo
7:00 am - 7:30 am
ONT
-
SNN
16h 30m
1 stop
United Airlines Logo
9:30 am - 6:19 pm
SNN
-
ONT
16h 49m
1 stop
$731United Airlines
Sun, Aug 16 - Wed, Sep 2
United Airlines Logo
6:30 am - 7:30 am
ONT
-
SNN
17h 00m
1 stop
United Airlines Logo
9:30 am - 6:19 pm
SNN
-
ONT
16h 49m
1 stop
$734United Airlines
Tue, Aug 4 - Wed, Aug 12
United Airlines Logo
5:00 am - 7:30 am
ONT
-
SNN
18h 30m
2 stops
United Airlines Logo
12:30 pm - 10:58 pm
SNN
-
ONT
18h 28m
2 stops
$736United Airlines
Sun, Aug 16 - Thu, Sep 3

United Airlines flights from Ontario to Shannon, Clare

Our best United Airlines deals on Ontario to Shannon, Clare flight tickets
United Airlines
Aug 16
ONT7:00 amOntario
16h 30m
1 stop
SNN7:30 amShannon
Sep 1
SNN9:30 amShannon
16h 49m
1 stop
ONT6:19 pmOntario
$681
United Airlines
Aug 15
ONT7:13 pmOntario
28h 17m
2 stops
SNN7:30 amShannon
Sep 2
SNN9:30 amShannon
16h 49m
1 stop
ONT6:19 pmOntario
$685
United Airlines
Aug 15
ONT7:13 pmOntario
28h 17m
2 stops
SNN7:30 amShannon
Sep 4
SNN9:30 amShannon
35h 08m
2 stops
ONT12:38 pmOntario
$696

Delta flights from Ontario to Shannon, Clare

Our best Delta deals on Ontario to Shannon, Clare flight tickets
Delta
Aug 21
ONT10:59 pmOntario
52h 11m
2 stops
SNN11:10 amShannon
Sep 4
SNN1:05 pmShannon
29h 59m
2 stops
ONT11:04 amOntario
$724
Delta
Aug 21
ONT10:59 pmOntario
52h 11m
2 stops
SNN11:10 amShannon
Sep 3
SNN1:05 pmShannon
36h 56m
2 stops
ONT6:01 pmOntario
$730
Delta
Aug 21
ONT10:59 pmOntario
52h 11m
2 stops
SNN11:10 amShannon
Sep 1
SNN1:05 pmShannon
29h 59m
2 stops
ONT11:04 amOntario
$775

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 March 27, 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

Cheapest round-trip
Quickest round-trip

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Sun 8/16

7:00 am-7:30 am

1 stop16h 30m

Shannon

Thu 9/3

9:30 am-6:19 pm

1 stop16h 49m

$681

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Sat 8/15

7:13 pm-7:30 am

2 stops28h 17m

Shannon

Wed 9/2

9:30 am-6:19 pm

1 stop16h 49m

$685

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Sat 8/15

7:13 pm-7:30 am

2 stops28h 17m

Shannon

Fri 9/4

9:30 am-12:38 pm

2 stops35h 08m

$696

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 8/20

7:00 am-7:30 am

1 stop16h 30m

Shannon

Thu 9/3

9:30 am-6:19 pm

1 stop16h 49m

$719

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Fri 8/21

5:45 am-10:15 am

2 stops20h 30m

Shannon

Tue 8/25

9:30 am-6:19 pm

1 stop16h 49m

$723

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Fri 8/21

10:59 pm-11:10 am

2 stops52h 11m

Shannon

Fri 9/4

1:05 pm-11:04 am

2 stops29h 59m

$724

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Fri 8/21

10:59 pm-11:10 am

2 stops52h 11m

Shannon

Thu 9/3

1:05 pm-6:01 pm

2 stops36h 56m

$730

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Sun 8/16

7:00 am-7:30 am

1 stop16h 30m

Shannon

Wed 9/2

9:30 am-6:19 pm

1 stop16h 49m

$731

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Tue 8/4

6:30 am-7:30 am

1 stop17h 00m

Shannon

Wed 8/12

9:30 am-6:19 pm

1 stop16h 49m

$734

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Sun 8/16

5:00 am-7:30 am

2 stops18h 30m

Shannon

Thu 9/3

12:30 pm-10:58 pm

2 stops18h 28m

$736

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 KLM 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 41% of people opting to fly with this airline when traveling to Shannon, Clare. Keep in mind that there are 5 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

16h 30m

Direct flights

None
The fastest flight from Ontario to Shannon, Clare takes 16h 30m
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 16h 30m.

  • 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
Ennis
Adare
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.

An easier way to manage your Shannon, Clare trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sun 4/26
Sun 5/3
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Ireland