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Cheap flights from Ontario to Ireland from €340

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 2/5. 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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Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
07:00 - 08:10ONT-DUB
17h 10m1 stop
United Airlines Logo
09:00 - 12:32DUB-ONT
35h 32m2 stops
€452United Airlines
Find Deal
Wed, 26 Nov - Wed, 3 Dec
United Airlines Logo
06:00 - 08:10ONT-DUB
18h 10m2 stops
United Airlines Logo
09:00 - 12:32DUB-ONT
35h 32m2 stops
€457United Airlines
Find Deal
Wed, 26 Nov - Wed, 3 Dec
Air Canada Logo
05:05 - 07:10ONT-DUB
18h 05m2 stops
Air Canada Logo
09:00 - 20:42DUB-ONT
19h 42m2 stops
€471Air Canada
Find Deal
Tue, 25 Nov - Wed, 3 Dec
Delta Logo
07:05 - 07:45ONT-DUB
16h 40m1 stop
Delta Logo
05:55 - 17:08DUB-ONT
19h 13m2 stops
€475Delta
Find Deal
Wed, 26 Nov - Wed, 3 Dec
Air Canada Logo
05:05 - 07:10ONT-DUB
18h 05m2 stops
Air Canada Logo
09:00 - 20:42DUB-ONT
19h 42m2 stops
€478Air Canada
Find Deal
Tue, 25 Nov - Wed, 3 Dec
Delta Logo
07:05 - 07:45ONT-DUB
16h 40m1 stop
Delta Logo
09:45 - 11:02DUB-ONT
33h 17m1 stop
€482Delta
Find Deal
Mon, 24 Nov - Fri, 5 Dec
British Airways Logo
10:58 - 11:30ONT-SNN
16h 32m2 stops
British Airways Logo
07:50 - 20:10SNN-ONT
20h 20m2 stops
€592British Airways
Find Deal
Fri, 16 Jan - Fri, 23 Jan
American Airlines Logo
15:09 - 15:45ONT-SNN
17h 36m2 stops
American Airlines Logo
07:40 - 23:43SNN-ONT
24h 03m2 stops
€748American Airlines
Find Deal
Fri, 27 Mar - Tue, 31 Mar
American Airlines Logo
15:09 - 15:25ONT-ORK
17h 16m2 stops
American Airlines Logo
07:20 - 23:43ORK-ONT
24h 23m2 stops
€766American Airlines
Find Deal
Fri, 27 Mar - Tue, 31 Mar
British Airways Logo
10:57 - 11:10ONT-ORK
17h 13m2 stops
British Airways Logo
11:45 - 23:43ORK-ONT
19h 58m2 stops
€795British Airways
Find Deal
Fri, 27 Mar - Sat, 4 Apr

United Airlines flights from Ontario to Ireland

Our best United Airlines deals on Ontario to Ireland flight tickets
United Airlines
26 Nov
ONT07:00Ontario
17h 10m
1 stop
DUB08:10Dublin
3 Dec
DUB09:00Dublin
35h 32m
2 stops
ONT12:32Ontario
€452
Find similar
United Airlines
26 Nov
ONT06:00Ontario
18h 10m
2 stops
DUB08:10Dublin
3 Dec
DUB09:00Dublin
35h 32m
2 stops
ONT12:32Ontario
€457
Find similar
United Airlines
23 Nov
ONT07:00Ontario
17h 10m
1 stop
DUB08:10Dublin
3 Dec
DUB09:00Dublin
19h 42m
2 stops
ONT20:42Ontario
€472
Find similar

Air Canada flights from Ontario to Ireland

Our best Air Canada deals on Ontario to Ireland flight tickets
Air Canada
25 Nov
ONT05:05Ontario
18h 05m
2 stops
DUB07:10Dublin
5 Dec
DUB09:00Dublin
19h 42m
2 stops
ONT20:42Ontario
€471
Find similar
Air Canada
25 Nov
ONT05:05Ontario
18h 05m
2 stops
DUB07:10Dublin
3 Dec
DUB09:00Dublin
19h 42m
2 stops
ONT20:42Ontario
€478
Find similar
Air Canada
24 Dec
ONT05:05Ontario
42h 05m
2 stops
DUB07:10Dublin
14 Jan
DUB09:00Dublin
43h 58m
2 stops
ONT20:58Ontario
€484
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 13 November 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

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 26/11

07:00-08:10

1 stop17h 10m

Dublin

Wed 3/12

09:00-12:32

2 stops35h 32m

€452

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 26/11

06:00-08:10

2 stops18h 10m

Dublin

Wed 3/12

09:00-12:32

2 stops35h 32m

€457

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 25/11

05:05-07:10

2 stops18h 05m

Dublin

Wed 3/12

09:00-20:42

2 stops19h 42m

€471

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 26/11

07:05-07:45

1 stop16h 40m

Dublin

Wed 3/12

05:55-17:08

2 stops19h 13m

€475

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 25/11

05:05-07:10

2 stops18h 05m

Dublin

Wed 3/12

09:00-20:42

2 stops19h 42m

€478

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 24/11

07:05-07:45

1 stop16h 40m

Dublin

Fri 5/12

09:45-11:02

1 stop33h 17m

€482

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Fri 16/1

10:58-11:30

2 stops16h 32m

Shannon

Fri 23/1

07:50-20:10

2 stops20h 20m

€592

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Fri 27/3

15:09-15:45

2 stops17h 36m

Shannon

Tue 31/3

07:40-23:43

2 stops24h 03m

€748

OntarioCork

ONT - ORK

ONTORK

Ontario

Fri 27/3

15:09-15:25

2 stops17h 16m

Cork

Tue 31/3

07:20-23:43

2 stops24h 23m

€766

OntarioCork

ONT - ORK

ONTORK

Ontario

Fri 27/3

10:57-11:10

2 stops17h 13m

Cork

Sat 4/4

11:45-23:43

2 stops19h 58m

€795

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 €531.

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.
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  • 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

Popular Cities in Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom €38
Flights to Corkfrom €106
Flights to Shannon, Clarefrom €121
Flights to Donegalfrom €77
Flights to Milltown (Kerry)from €38