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Cheap flights from Ontario to Ireland from $457

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 Ireland departing on 3/9. 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

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Find the cheapest flights from Ontario to Ireland

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
2:39 pm - 4:45 pm
ONT
-
SNN
19h 06m
2 stops
American Airlines Logo
9:15 pm - 7:09 pm
SNN
-
ONT
29h 54m
2 stops
$525American Airlines
Wed, Mar 18 - Tue, Mar 31
United Airlines Logo
5:00 am - 7:30 am
ONT
-
SNN
42h 30m
2 stops
United Airlines Logo
9:30 am - 10:26 pm
SNN
-
ONT
20h 56m
1 stop
$634United Airlines
Sat, May 30 - Thu, Aug 13
United Airlines Logo
11:59 pm - 7:30 am
ONT
-
DUB
24h 31m
2 stops
United Airlines Logo
9:50 am - 12:38 pm
DUB
-
ONT
34h 48m
2 stops
$635United Airlines
Sun, Mar 22 - Tue, Apr 28
British Airways Logo
2:39 pm - 5:05 pm
ONT
-
DUB
18h 26m
2 stops
British Airways Logo
10:55 am - 10:06 am
DUB
-
ONT
30h 11m
2 stops
$637British Airways
Mon, Mar 2 - Tue, Mar 10
United Airlines Logo
11:59 pm - 9:45 am
ONT
-
DUB
25h 46m
1 stop
United Airlines Logo
9:20 am - 12:22 pm
DUB
-
ONT
35h 02m
2 stops
$638United Airlines
Sat, Mar 28 - Fri, May 1
Air Canada Logo
5:00 am - 7:10 am
ONT
-
DUB
18h 10m
2 stops
Air Canada Logo
9:50 am - 12:14 pm
DUB
-
ONT
34h 24m
2 stops
$639Air Canada
Sun, Feb 22 - Fri, Apr 17
Multiple Airlines Logo
1:15 pm - 10:55 pm
ONT
-
DUB
25h 40m
2 stops
Multiple Airlines Logo
5:55 am - 9:05 pm
DUB
-
ONT
23h 10m
2 stops
$657Multiple Airlines
Wed, Feb 18 - Tue, Feb 24
Delta Logo
10:25 pm - 8:45 am
ONT
-
DUB
27h 20m
2 stops
Delta Logo
8:55 am - 10:37 pm
DUB
-
ONT
21h 42m
2 stops
$659Delta
Sun, Mar 22 - Wed, Apr 29
Delta Logo
1:15 pm - 7:45 am
ONT
-
DUB
34h 30m
1 stop
Delta Logo
8:55 am - 5:15 pm
DUB
-
ONT
40h 20m
2 stops
$662Delta
Sun, Feb 22 - Mon, Apr 13
British Airways Logo
2:39 pm - 4:10 pm
ONT
-
SNN
17h 31m
2 stops
British Airways Logo
7:30 am - 10:35 pm
SNN
-
ONT
23h 05m
2 stops
$663British Airways
Sun, Apr 5 - Tue, Apr 14

KLM flights from Ontario to Ireland

Our best KLM deals on Ontario to Ireland flight tickets
KLM
May 5
ONT7:00 amOntario
17h 45m
1 stop
DUB8:45 amDublin
May 15
DUB11:00 amDublin
15h 15m
1 stop
ONT6:15 pmOntario
$738
KLM
Apr 25
ONT7:00 amOntario
17h 45m
1 stop
DUB8:45 amDublin
May 29
DUB11:00 amDublin
15h 15m
1 stop
ONT6:15 pmOntario
$771

Air Canada flights from Ontario to Ireland

Our best Air Canada deals on Ontario to Ireland flight tickets
Air Canada
Feb 22
ONT5:00 amOntario
18h 10m
2 stops
DUB7:10 amDublin
Apr 14
DUB9:50 amDublin
39h 57m
2 stops
ONT5:47 pmOntario
$639
Air Canada
Feb 26
ONT5:00 amOntario
18h 10m
2 stops
DUB7:10 amDublin
Apr 17
DUB9:50 amDublin
34h 48m
2 stops
ONT12:38 pmOntario
$672
Air Canada
May 5
ONT6:00 amOntario
17h 45m
2 stops
DUB7:45 amDublin
May 15
DUB9:50 amDublin
45h 09m
2 stops
ONT10:59 pmOntario
$703

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Ireland 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 January 27, 2026.
Use the filters below to find and compare flights from Ontario to Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Wed 3/18

2:39 pm-4:45 pm

2 stops19h 06m

Shannon

Tue 3/31

9:15 pm-7:09 pm

2 stops29h 54m

$525

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Sat 5/30

5:00 am-7:30 am

2 stops42h 30m

Shannon

Thu 8/13

9:30 am-10:26 pm

1 stop20h 56m

$634

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 3/22

11:59 pm-7:30 am

2 stops24h 31m

Dublin

Tue 4/28

9:50 am-12:38 pm

2 stops34h 48m

$635

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 3/2

2:39 pm-5:05 pm

2 stops18h 26m

Dublin

Tue 3/10

10:55 am-10:06 am

2 stops30h 11m

$637

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 3/28

11:59 pm-9:45 am

1 stop25h 46m

Dublin

Fri 5/1

9:20 am-12:22 pm

2 stops35h 02m

$638

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 2/22

5:00 am-7:10 am

2 stops18h 10m

Dublin

Fri 4/17

9:50 am-12:14 pm

2 stops34h 24m

$639

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 2/18

1:15 pm-10:55 pm

2 stops25h 40m

Dublin

Tue 2/24

5:55 am-9:05 pm

2 stops23h 10m

$657

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 3/22

10:25 pm-8:45 am

2 stops27h 20m

Dublin

Wed 4/29

8:55 am-10:37 pm

2 stops21h 42m

$659

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 2/22

1:15 pm-7:45 am

1 stop34h 30m

Dublin

Mon 4/13

8:55 am-5:15 pm

2 stops40h 20m

$662

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Sun 4/5

2:39 pm-4:10 pm

2 stops17h 31m

Shannon

Tue 4/14

7:30 am-10:35 pm

2 stops23h 05m

$663

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Ireland from

How to get the cheapest flight ticket from Ontario to Ireland

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

Can stopping save me money on Ontario to Ireland flights?

You could potentially save up to 22% on your flight if you consider stops on a Ontario to Ireland flight.

Cheap Ontario to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Ireland

Fastest flight time

16h 05m

Direct flights

None
The fastest flight from Ontario to Ireland takes 16h 05m
There are no direct flights from Ontario to Ireland. There are no popular flight routes from Ontario to Ireland.
Search flight deals

  • When did momondo last update prices for flights from Ontario Airport to Ireland?

    Prices for flights from Ontario Airport to Ireland are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario Airport to Ireland?

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Ireland.

  • What documentation or ID do you need to fly to Ireland?

    The necessary travel and health documents for your Ireland 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.

Best airlines flying from Ontario to Ireland

Compare and see reviews for airlines that fly from Ontario to Ireland with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $527Free CancellationRating
7.9
8,119 reviews
Search Delta flights
American AirlinesPriceFrom $683Free CancellationRating
7.2
11,197 reviews
Search American Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Ireland from Ontario.

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

momondo does allow users to show only those flights to Ireland from Ontario which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Ontario to Ireland?

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 Ireland.

I’m not ready to book a flight from Ontario to Ireland right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to Ireland flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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