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Shannon

$399+ 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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — SNN
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
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Cheap 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 July 1, 2025.

Round-trip from

$487
(United Airlines)

One-way from

$399
(United Airlines)

Popular in

December

Cheapest in

March

Average price

$964
From Ontario to Shannon
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One-way flight from Ontario to Shannon
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Highest demand for flights based on searches. 18% potential increase in price ($209 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($76 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find 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 July 1, 2025.

This United Airlines deal was found by Cheapflights users on 6/29. 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.
Wed 8/137:00 amONT - SNN
1 stop16h 30mUnited Airlines
Wed 8/209:30 amSNN - ONT
1 stop21h 00mUnited Airlines
Deal found 6/29$487
This Booking.com deal was found by Cheapflights users on 6/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/24:45 pmONT - SNN
2 stops15h 20mBritish Airways
Tue 8/127:40 amSNN - ONT
2 stops18h 12mBritish Airways
Deal found 6/30$816

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 July 1, 2025.
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

Wed 8/13

7:00 am-7:30 am

1 stop16h 30m

Shannon

Wed 8/20

9:30 am-10:30 pm

1 stop21h 00m

$487

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Sat 8/2

4:45 pm-4:05 pm

2 stops15h 20m

Shannon

Tue 8/12

7:40 am-5:52 pm

2 stops18h 12m

$816

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Tue 8/12

6:10 am-7:30 am

2 stops17h 20m

$399

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Mon 8/11

7:05 am-11:10 am

2 stops20h 05m

$418

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

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, February is the cheapest month in which you can book a flight from Ontario to Shannon, Clare (average of $533). Flying from Ontario to Shannon, Clare in June is currently the most expensive (average of $938). 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.

Reviews of airlines servicing Shannon

Get insights into the airlines that provide service to Shannon. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Shannon. Reviews last updated July 1, 2025.
Peruse reviews from past customers who have flown with KLM, United Airlines, and British Airways from Ontario to Shannon to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,366 reviews

Comfort

7.7

Entertainment

7.1

Overall

7.8

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,366 reviews
KLM
7.8
Good
1,366 reviews

Comfort

7.7

Entertainment

7.1

Overall

7.8

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
United Airlines
7.4
Good
8,858 reviews
KLM
7.8
Good
1,366 reviews

Comfort

7.7

Entertainment

7.1

Overall

7.8

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
British Airways
6.6
Okay
7,086 reviews
KLM
7.8
Good
1,366 reviews

Comfort

7.7

Entertainment

7.1

Overall

7.8

Food

7.2

Boarding

7.8

Crew

8.4

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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.

  • 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, February is the cheapest month in which you can book a flight from Ontario to Shannon, Clare (average of $533). Flying from Ontario to Shannon, Clare in June is currently the most expensive (average of $938). 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 Ontario?

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

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