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Shannon

$414+ Cheap flights from Ontario (ONT) to Shannon (SNN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SNN
febr. 21 — febr. 281
ds. 2/21
ds. 2/28
1 adult, Economy
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Cheap flight deals from Ontario to Shannon

Cheapest flights from Ontario to Shannon
Explore the most affordable flight options available from Ontario to Shannon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on gener 22, 2026.

This oojo deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dl. 2/165:02 pm
ONT
-
SNN
2 stops15h 43m
British Airways
dj. 2/267:50 am
SNN
-
ONT
2 stops22h 39m
British Airways
Deal found 1/21$420
This oojo deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dv. 1/3011:59 pm
ONT
-
SNN
2 stops27h 31m
British Airways
dj. 2/127:50 am
SNN
-
ONT
2 stops21h 34m
British Airways
Deal found 1/21$470
This oojo deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ds. 3/285:02 pm
ONT
-
SNN
2 stops39h 08m
British Airways
dg. 4/127:30 am
SNN
-
ONT
2 stops22h 29m
British Airways
Deal found 1/21$476
This oojo deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ds. 2/1410:56 am
ONT
-
SNN
2 stops16h 34m
British Airways
ds. 2/215:25 pm
SNN
-
ONT
2 stops35h 59m
British Airways
Deal found 1/21$520
This oojo deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dc. 9/1612:47 pm
ONT
-
SNN
2 stops19h 23m
British Airways
dl. 9/219:15 pm
SNN
-
ONT
2 stops28h 24m
British Airways
Deal found 1/20$545
This British Airways deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 3/56:00 am
ONT
-
SNN
2 stops29h 25m
British Airways
dl. 3/97:50 am
SNN
-
ONT
2 stops41h 52m
British Airways
Deal found 1/21$550
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dc. 9/167:00 am
ONT
-
SNN
1 stop16h 30m
United Airlines
dl. 9/219:30 am
SNN
-
ONT
2 stops19h 51m
United Airlines
Deal found 1/20$603
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dl. 5/111:40 pm
ONT
-
SNN
2 stops36h 35m
United Airlines
dl. 5/259:30 am
SNN
-
ONT
1 stop20h 56m
United Airlines
Deal found 1/21$664
This oojo deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dc. 1/2110:58 am
ONT
-
SNN
2 stops16h 32m
British Airways
dc. 1/288:05 pm
SNN
-
ONT
2 stops29h 17m
British Airways
Deal found 1/20$759
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dg. 7/126:53 pm
ONT
-
SNN
2 stops28h 37m
United Airlines
dj. 7/239:30 am
SNN
-
ONT
1 stop20h 56m
United Airlines
Deal found 1/21$956
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dv. 5/227:00 am
ONT
-
SNN
1 stop16h 30m
United Airlines
ds. 5/309:30 am
SNN
-
ONT
2 stops19h 51m
United Airlines
Deal found 1/21$966
This Priceline deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dt. 2/242:39 pm
ONT
-
SNN
2 stops18h 06m
British Airways
dc. 3/47:50 am
SNN
-
ONT
2 stops22h 29m
British Airways
Deal found 1/21$996

Find flight deals from Ontario to Shannon

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Shannon (SNN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated gener 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$420
(oojo)

One-way from

$414
(United Airlines)

Popular in

June

Cheapest in

March

Average price

$869
Provider with most accurate pricing for Ontario-Shannon flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Shannon flights.
Search Deals
From Ontario to Shannon
Search Deals
One-way flight from Ontario to Shannon
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($173 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Shannon 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, Cheapflights users made 2,558,603 searches. Data last updated gener 22, 2026.
Use the filters below to find and compare flights from Ontario to Shannon that are best for you.

Fly from

Ontario

Fly to

Shannon

Route

Depart

Return

Price

OntarioShannon

ONT - SNN

ONTSNN

Ontario

dg. 5/3

12:19 pm-11:20 am

2 stops39h 01m

Shannon

dc. 5/13

7:40 am-11:46 pm

2 stops24h 06m

$420

OntarioShannon

ONT - SNN

ONTSNN

Ontario

dl. 2/16

5:02 pm-4:45 pm

2 stops15h 43m

Shannon

dj. 2/26

7:50 am-10:29 pm

2 stops22h 39m

$420

OntarioShannon

ONT - SNN

ONTSNN

Ontario

dc. 4/1

10:56 am-11:20 am

2 stops16h 24m

Shannon

ds. 4/11

5:30 pm-10:35 pm

2 stops37h 05m

$470

OntarioShannon

ONT - SNN

ONTSNN

Ontario

ds. 3/28

5:02 pm-3:10 pm

2 stops39h 08m

Shannon

dg. 4/12

7:30 am-9:59 pm

2 stops22h 29m

$476

OntarioShannon

ONT - SNN

ONTSNN

Ontario

ds. 2/14

10:56 am-11:30 am

2 stops16h 34m

Shannon

ds. 2/21

5:25 pm-9:24 pm

2 stops35h 59m

$520

OntarioShannon

ONT - SNN

ONTSNN

Ontario

dj. 2/26

2:39 pm-4:45 pm

2 stops18h 06m

Shannon

dv. 3/6

8:05 pm-9:02 pm

2 stops32h 57m

$520

OntarioShannon

ONT - SNN

ONTSNN

Ontario

dj. 3/5

10:56 am-4:45 pm

2 stops21h 49m

Shannon

dl. 3/9

8:05 pm-10:49 pm

2 stops33h 44m

$550

OntarioShannon

ONT - SNN

ONTSNN

Ontario

dl. 5/11

1:40 pm-10:15 am

2 stops36h 35m

Shannon

dl. 5/25

9:30 am-10:26 pm

1 stop20h 56m

$664

OntarioShannon

ONT - SNN

ONTSNN

Ontario

dg. 7/12

6:53 pm-7:30 am

2 stops28h 37m

Shannon

dj. 7/23

9:30 am-10:26 pm

1 stop20h 56m

$956

OntarioShannon

ONT - SNN

ONTSNN

Ontario

dt. 6/9

6:02 am-10:15 am

2 stops20h 13m

$414

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 19 results
1
2
  • Most accurate provider: When it comes to deals on Ontario-Shannon, Clare flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Shannon, Clare flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Shannon, Clare flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Shannon, Clare flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Shannon, Clare flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Shannon

Have a flexible travel schedule? Discover the best time to fly to Shannon from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Shannon

What is the cheapest month to book a flight from Ontario to Shannon, Clare?

Currently, August is the cheapest month in which you can book a flight from Ontario to Shannon, Clare (average of $469). Flying from Ontario to Shannon, Clare in December is currently the most expensive (average of $766). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Shannon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Shannon, Clare?

    British Airways can get you from Ontario to Shannon, Clare in just under 39h 01m. Your travel time can differ by up to . Airlines will cover a distance of 5072 mi.

  • Can I find deals for flights from Ontario to Shannon that include hotel bookings?

    Yes. In addition to deals on Ontario to Shannon flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Shannon?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Shannon.

  • Can I find deals for business class flights from Ontario to Shannon?

    Yes. Cheapflights offers flight deals from Ontario to Shannon by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Shannon, Clare?

    Currently, August is the cheapest month in which you can book a flight from Ontario to Shannon, Clare (average of $469). Flying from Ontario to Shannon, Clare in December is currently the most expensive (average of $766). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Shannon?

Book flights to Shannon if you plan to visit one of these locations
Ennis

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