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Cheap flights from Ontario to Shannon from €444

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 11/9. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Ontario to Shannon

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
07:00 - 07:30ONT  Ontario-SNN Shannon
16h 30m1 stop Chicago O'Hare Intl
United Airlines Logo
09:30 - 22:59SNN  Shannon-ONT Ontario
21h 29m1 stop Chicago O'Hare Intl
€815United Airlines
Tue, 18 Aug - Tue, 15 Sep
United Airlines Logo
13:56 - 07:30ONT  Ontario-SNN Shannon
33h 34m2 stops San Francisco Chicago O'Hare Intl
United Airlines Logo
09:30 - 12:12SNN  Shannon-ONT Ontario
34h 42m2 stops Chicago O'Hare Intl San Francisco
€818United Airlines
Wed, 2 Sep - Tue, 8 Sep
Delta Logo
07:05 - 11:10ONT  Ontario-SNN Shannon
20h 05m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
Delta Logo
13:05 - 23:34SNN  Shannon-ONT Ontario
18h 29m2 stops New York John F Kennedy Intl Salt Lake City
€819Delta
Tue, 25 Aug - Fri, 4 Sep
Multiple Airlines Logo
07:05 - 11:10ONT  Ontario-SNN Shannon
20h 05m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
Multiple Airlines Logo
13:05 - 16:24SNN  Shannon-ONT Ontario
35h 19m2 stops New York John F Kennedy Intl Salt Lake City
€826Multiple Airlines
Tue, 18 Aug - Tue, 1 Sep
Delta Logo
07:05 - 11:10ONT  Ontario-SNN Shannon
20h 05m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
Delta Logo
13:05 - 18:30SNN  Shannon-ONT Ontario
37h 25m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson
€832Delta
Tue, 25 Aug - Thu, 3 Sep
United Airlines Logo
07:00 - 07:30ONT  Ontario-SNN Shannon
16h 30m1 stop Chicago O'Hare Intl
United Airlines Logo
12:30 - 12:46SNN  Shannon-ONT Ontario
32h 16m2 stops Newark Denver Intl
€856United Airlines
Tue, 22 Sep - Tue, 29 Sep
United Airlines Logo
07:00 - 07:30ONT  Ontario-SNN Shannon
16h 30m1 stop Chicago O'Hare Intl
United Airlines Logo
09:30 - 22:35SNN  Shannon-ONT Ontario
21h 05m1 stop Chicago O'Hare Intl
€859United Airlines
Mon, 17 Aug - Mon, 31 Aug
Delta Logo
07:05 - 11:10ONT  Ontario-SNN Shannon
20h 05m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
Delta Logo
13:05 - 12:16SNN  Shannon-ONT Ontario
31h 11m2 stops New York John F Kennedy Intl Salt Lake City
€877Delta
Tue, 25 Aug - Sat, 5 Sep
Delta Logo
07:05 - 11:10ONT  Ontario-SNN Shannon
20h 05m2 stops Atlanta Hartsfield-Jackson New York John F Kennedy Intl
Delta Logo
13:05 - 10:42SNN  Shannon-ONT Ontario
29h 37m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson
€905Delta
Wed, 26 Aug - Fri, 4 Sep
United Airlines Logo
07:00 - 07:30ONT  Ontario-SNN Shannon
16h 30m1 stop Chicago O'Hare Intl
United Airlines Logo
09:30 - 22:35SNN  Shannon-ONT Ontario
21h 05m1 stop Chicago O'Hare Intl
€908United Airlines
Thu, 27 Aug - Thu, 3 Sep

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United Airlines flights from Ontario to Shannon, Clare

Our best United Airlines deals on Ontario to Shannon, Clare flight tickets
United Airlines
18 Aug
ONT07:00Ontario
16h 30m
1 stop
SNN07:30Shannon
15 Sept
SNN09:30Shannon
21h 29m
1 stop
ONT22:59Ontario
€815
United Airlines
2 Sept
ONT13:56Ontario
33h 34m
2 stops
SNN07:30Shannon
8 Sept
SNN09:30Shannon
34h 42m
2 stops
ONT12:12Ontario
€818
United Airlines
22 Sept
ONT07:00Ontario
16h 30m
1 stop
SNN07:30Shannon
29 Sept
SNN12:30Shannon
32h 16m
2 stops
ONT12:46Ontario
€856

KLM flights from Ontario to Shannon, Clare

Our best KLM deals on Ontario to Shannon, Clare flight tickets
KLM
31 Aug
ONT07:05Ontario
20h 05m
2 stops
SNN11:10Shannon
16 Sept
SNN13:05Shannon
18h 42m
2 stops
ONT23:47Ontario
€1,061
KLM
9 Aug
ONT07:05Ontario
20h 05m
2 stops
SNN11:10Shannon
11 Aug
SNN13:05Shannon
35h 19m
2 stops
ONT16:24Ontario
€1,311

momondo Fare Finder

 
Customise 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 13,528 searches. Data last updated 8 August 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 return flight

OntarioShannon

ONT Ontario - SNN Shannon

ONTSNN

Ontario

Tue 18/8

07:00-07:30

1 stop16h 30m

Shannon

Tue 15/9

09:30-22:59

1 stop21h 29m

€815

OntarioShannon

ONT Ontario - SNN Shannon

ONTSNN

Ontario

Wed 2/9

13:56-07:30

2 stops33h 34m

Shannon

Tue 8/9

09:30-12:12

2 stops34h 42m

€818

OntarioShannon

ONT Ontario - SNN Shannon

ONTSNN

Ontario

Tue 25/8

07:05-11:10

2 stops20h 05m

Shannon

Fri 4/9

13:05-23:34

2 stops18h 29m

€819

OntarioShannon

ONT Ontario - SNN Shannon

ONTSNN

Ontario

Tue 18/8

07:05-11:10

2 stops20h 05m

Shannon

Tue 1/9

13:05-16:24

2 stops35h 19m

€826

OntarioShannon

ONT Ontario - SNN Shannon

ONTSNN

Ontario

Tue 25/8

07:05-11:10

2 stops20h 05m

Shannon

Thu 3/9

13:05-18:30

2 stops37h 25m

€832

OntarioShannon

ONT Ontario - SNN Shannon

ONTSNN

Ontario

Tue 22/9

07:00-07:30

1 stop16h 30m

Shannon

Tue 29/9

12:30-12:46

2 stops32h 16m

€856
Fastest return journey

OntarioShannon

ONT Ontario - SNN Shannon

ONTSNN

Ontario

Mon 17/8

07:00-07:30

1 stop16h 30m

Shannon

Mon 31/8

09:30-22:35

1 stop21h 05m

€859

OntarioShannon

ONT Ontario - SNN Shannon

ONTSNN

Ontario

Tue 25/8

07:05-11:10

2 stops20h 05m

Shannon

Sat 5/9

13:05-12:16

2 stops31h 11m

€877

OntarioShannon

ONT Ontario - SNN Shannon

ONTSNN

Ontario

Wed 26/8

07:05-11:10

2 stops20h 05m

Shannon

Fri 4/9

13:05-10:42

2 stops29h 37m

€905

OntarioShannon

ONT Ontario - SNN Shannon

ONTSNN

Ontario

Thu 27/8

07:00-07:30

1 stop16h 30m

Shannon

Thu 3/9

09:30-22:35

1 stop21h 05m

€908

Flights are sorted by cheapest return flights first.

Showing 1-10 of 17 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 is the most popular carrier operating from Ontario to Shannon

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 return 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.
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Frequently asked questions about flying from Ontario to Shannon, Clare

  • How far is Ontario to Shannon by plane?

    Ontario and Shannon are 8167.8 km apart from one another. By plane, this route typically takes 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 were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and stopovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Shannon Airport.

  • What documentation or ID do you need to fly to Shannon Airport?

    The travel and health documents required for your trip to Shannon Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Shannon Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near Shannon?

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

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Shannon. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Shannon with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Shannon from Ontario with this policy.

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?

Of course. momondo tracks the price of Ontario to Shannon flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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