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Cheap flights from Ontario to Ireland from €338

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 13/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from Ontario to Ireland

Cheap return flights

American Airlines Logo
10:38 - 16:45ONT-SNN
22h 07m2 stops
American Airlines Logo
07:50 - 21:40SNN-ONT
21h 50m2 stops
€496American Airlines
Find Deal
Mon, 16 Feb - Tue, 24 Feb
KLM Logo
11:36 - 08:45ONT-DUB
13h 09m1 stop
KLM Logo
09:45 - 19:19DUB-ONT
17h 34m1 stop
€552KLM
Find Deal
Mon, 20 Oct - Wed, 5 Nov
KLM Logo
11:36 - 08:45ONT-DUB
13h 09m1 stop
KLM Logo
09:45 - 19:19DUB-ONT
17h 34m1 stop
€553KLM
Find Deal
Mon, 20 Oct - Wed, 5 Nov
JetBlue Logo
22:56 - 08:20ONT-DUB
25h 24m1 stop
JetBlue Logo
11:30 - 21:29DUB-ONT
17h 59m1 stop
€557JetBlue
Find Deal
Fri, 12 Sep - Tue, 16 Sep
British Airways Logo
14:51 - 17:00ONT-DUB
19h 09m2 stops
British Airways Logo
08:50 - 21:59DUB-ONT
21h 09m2 stops
€558British Airways
Find Deal
Wed, 29 Oct - Thu, 6 Nov
Air France Logo
11:36 - 08:45ONT-DUB
13h 09m1 stop
Air France Logo
09:45 - 19:19DUB-ONT
17h 34m1 stop
€559Air France
Find Deal
Mon, 20 Oct - Wed, 5 Nov
Air France Logo
11:36 - 08:45ONT-DUB
13h 09m1 stop
Air France Logo
09:45 - 19:19DUB-ONT
17h 34m1 stop
€561Air France
Find Deal
Mon, 20 Oct - Wed, 5 Nov
American Airlines Logo
10:57 - 10:15ONT-DUB
16h 18m2 stops
American Airlines Logo
11:30 - 22:23DUB-ONT
18h 53m2 stops
€563American Airlines
Find Deal
Wed, 29 Oct - Thu, 6 Nov
JetBlue Logo
22:56 - 08:20ONT-DUB
25h 24m1 stop
JetBlue Logo
11:30 - 21:29DUB-ONT
17h 59m1 stop
€572JetBlue
Find Deal
Sun, 7 Sep - Tue, 16 Sep
British Airways Logo
16:45 - 19:50ONT-DUB
19h 05m2 stops
British Airways Logo
10:55 - 22:02DUB-ONT
19h 07m2 stops
€596British Airways
Find Deal
Fri, 2 Jan - Sat, 10 Jan

KLM flights from Ontario to Ireland

Our best KLM deals on Ontario to Ireland flight tickets
KLM
20 Oct
ONT11:36Ontario
13h 09m
1 stop
DUB08:45Dublin
5 Nov
DUB09:45Dublin
17h 34m
1 stop
ONT19:19Ontario
€552
Find similar
KLM
20 Oct
ONT11:36Ontario
13h 09m
1 stop
DUB08:45Dublin
5 Nov
DUB09:45Dublin
17h 34m
1 stop
ONT19:19Ontario
€553
Find similar
KLM
20 Oct
ONT11:36Ontario
13h 09m
1 stop
DUB08:45Dublin
5 Nov
DUB09:45Dublin
17h 34m
1 stop
ONT19:19Ontario
€570
Find similar

Air France flights from Ontario to Ireland

Our best Air France deals on Ontario to Ireland flight tickets
Air France
20 Oct
ONT11:36Ontario
13h 09m
1 stop
DUB08:45Dublin
5 Nov
DUB09:45Dublin
17h 34m
1 stop
ONT19:19Ontario
€559
Find similar
Air France
20 Oct
ONT11:36Ontario
13h 09m
1 stop
DUB08:45Dublin
5 Nov
DUB09:45Dublin
17h 34m
1 stop
ONT19:19Ontario
€561
Find similar
Air France
29 Oct
ONT11:36Ontario
13h 09m
1 stop
DUB07:45Dublin
5 Nov
DUB09:45Dublin
17h 34m
1 stop
ONT19:19Ontario
€621
Find similar

momondo Fare Finder

 
Customise 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 13,528 searches. Data last updated 28 August 2025.
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

Mon 16/2

10:38-16:45

2 stops22h 07m

Shannon

Tue 24/2

07:50-21:40

2 stops21h 50m

€496

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 20/10

11:36-08:45

1 stop13h 09m

Dublin

Wed 5/11

09:45-19:19

1 stop17h 34m

€552

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 20/10

11:36-08:45

1 stop13h 09m

Dublin

Wed 5/11

09:45-19:19

1 stop17h 34m

€553

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 12/9

22:56-08:20

1 stop25h 24m

Dublin

Tue 16/9

11:30-21:29

1 stop17h 59m

€557

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 29/10

14:51-17:00

2 stops19h 09m

Dublin

Thu 6/11

08:50-21:59

2 stops21h 09m

€558

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 20/10

11:36-08:45

1 stop13h 09m

Dublin

Wed 5/11

09:45-19:19

1 stop17h 34m

€559

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 20/10

11:36-08:45

1 stop13h 09m

Dublin

Wed 5/11

09:45-19:19

1 stop17h 34m

€561

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 29/10

10:57-10:15

2 stops16h 18m

Dublin

Thu 6/11

11:30-22:23

2 stops18h 53m

€563

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 7/9

22:56-08:20

1 stop25h 24m

Dublin

Tue 16/9

11:30-21:29

1 stop17h 59m

€572

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 2/1

16:45-19:50

2 stops19h 05m

Dublin

Sat 10/1

10:55-22:02

2 stops19h 07m

€596

Flights are sorted by cheapest return 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

What is the cheapest month to fly to Ireland?

The month of March is another great option to travel to Ireland, with average flight prices from Ontario averaging around €522.

Cheap Ontario to Ireland flight deals and tips

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

Direct flights

None
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 refresh daily.

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

    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 Ireland.

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

    The required travel and health documents for your Ireland trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Ireland. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

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

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

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

Yes. momondo allows you to filter the results for Ontario to Ireland flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Ireland from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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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Find better results for your trip to Ireland

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