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Cheap flights from Ontario to Ireland from €305

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 1/3. 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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Cheap return flights

Delta Logo
11:36 - 08:45ONT-DUB
13h 09m1 stop
Delta Logo
09:45 - 19:19DUB-ONT
17h 34m1 stop
€401Delta
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Mon, 20 Oct - Wed, 5 Nov
Air Canada Logo
05:05 - 07:10ONT-DUB
18h 05m2 stops
Air Canada Logo
09:00 - 20:42DUB-ONT
19h 42m2 stops
€402Air Canada
Find Deal
Tue, 25 Nov - Fri, 5 Dec
United Airlines Logo
07:00 - 08:10ONT-DUB
17h 10m1 stop
United Airlines Logo
09:00 - 22:31DUB-ONT
21h 31m2 stops
€404United Airlines
Find Deal
Mon, 10 Nov - Wed, 19 Nov
United Airlines Logo
07:00 - 08:10ONT-DUB
17h 10m1 stop
United Airlines Logo
12:05 - 22:51DUB-ONT
18h 46m2 stops
€408United Airlines
Find Deal
Sun, 9 Nov - Wed, 19 Nov
American Airlines Logo
12:48 - 12:35ONT-DUB
16h 47m2 stops
American Airlines Logo
12:55 - 11:36DUB-ONT
30h 41m1 stop
€442American Airlines
Find Deal
Mon, 27 Oct - Mon, 3 Nov
Multiple Airlines Logo
07:00 - 07:10ONT-DUB
16h 10m2 stops
Multiple Airlines Logo
09:00 - 18:36DUB-ONT
17h 36m2 stops
€452Multiple Airlines
Find Deal
Tue, 11 Nov - Mon, 17 Nov
British Airways Logo
15:05 - 17:00ONT-DUB
17h 55m2 stops
British Airways Logo
08:50 - 21:40DUB-ONT
19h 50m2 stops
€455British Airways
Find Deal
Wed, 4 Mar - Thu, 19 Mar
Multiple Airlines Logo
06:35 - 07:10ONT-DUB
16h 35m1 stop
Multiple Airlines Logo
13:10 - 23:55DUB-ONT
18h 45m2 stops
€464Multiple Airlines
Find Deal
Thu, 4 Dec - Thu, 11 Dec
American Airlines Logo
12:48 - 12:35ONT-DUB
16h 47m2 stops
American Airlines Logo
10:45 - 21:59DUB-ONT
19h 14m2 stops
€489American Airlines
Find Deal
Mon, 27 Oct - Mon, 3 Nov
British Airways Logo
14:54 - 19:50ONT-ORK
20h 56m2 stops
British Airways Logo
20:30 - 19:03ORK-ONT
30h 33m2 stops
€735British Airways
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Tue, 30 Sep - Tue, 7 Oct

Delta flights from Ontario to Ireland

Our best Delta deals on Ontario to Ireland flight tickets
Delta
20 Oct
ONT11:36Ontario
13h 09m
1 stop
DUB08:45Dublin
5 Nov
DUB09:45Dublin
17h 34m
1 stop
ONT19:19Ontario
€401
Find similar
Delta
4 Mar
ONT22:30Ontario
25h 15m
1 stop
DUB07:45Dublin
19 Mar
DUB06:00Dublin
18h 15m
2 stops
ONT17:15Ontario
€458
Find similar
Delta
15 Oct
ONT07:05Ontario
17h 40m
1 stop
DUB08:45Dublin
22 Oct
DUB11:00Dublin
19h 22m
1 stop
ONT22:22Ontario
€484
Find similar

American Airlines flights from Ontario to Ireland

Our best American Airlines deals on Ontario to Ireland flight tickets
American Airlines
27 Oct
ONT12:48Ontario
16h 47m
2 stops
DUB12:35Dublin
3 Nov
DUB12:55Dublin
30h 41m
1 stop
ONT11:36Ontario
€442
Find similar
American Airlines
27 Oct
ONT12:48Ontario
16h 47m
2 stops
DUB12:35Dublin
3 Nov
DUB10:45Dublin
19h 14m
2 stops
ONT21:59Ontario
€489
Find similar
American Airlines
24 Sept
ONT12:47Ontario
12h 58m
1 stop
DUB09:45Dublin
7 Oct
DUB12:40Dublin
14h 12m
1 stop
ONT18:52Ontario
€908
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 18 September 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

Mon 20/10

11:36-08:45

1 stop13h 09m

Dublin

Wed 5/11

09:45-19:19

1 stop17h 34m

€401

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 25/11

05:05-07:10

2 stops18h 05m

Dublin

Fri 5/12

09:00-20:42

2 stops19h 42m

€402

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 10/11

07:00-08:10

1 stop17h 10m

Dublin

Wed 19/11

09:00-22:31

2 stops21h 31m

€404

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 9/11

07:00-08:10

1 stop17h 10m

Dublin

Wed 19/11

12:05-22:51

2 stops18h 46m

€408

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 27/10

12:48-12:35

2 stops16h 47m

Dublin

Mon 3/11

12:55-11:36

1 stop30h 41m

€442

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 11/11

07:00-07:10

2 stops16h 10m

Dublin

Mon 17/11

09:00-18:36

2 stops17h 36m

€452

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 4/3

15:05-17:00

2 stops17h 55m

Dublin

Thu 19/3

08:50-21:40

2 stops19h 50m

€455

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Thu 4/12

06:35-07:10

1 stop16h 35m

Dublin

Thu 11/12

13:10-23:55

2 stops18h 45m

€464

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 27/10

12:48-12:35

2 stops16h 47m

Dublin

Mon 3/11

10:45-21:59

2 stops19h 14m

€489

OntarioCork

ONT - ORK

ONTORK

Ontario

Tue 30/9

14:54-19:50

2 stops20h 56m

Cork

Tue 7/10

20:30-19:03

2 stops30h 33m

€735

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 €512.

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

Popular Cities in Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom €38
Flights to Corkfrom €111
Flights to Shannon, Clarefrom €110
Flights to Donegalfrom €100
Flights to Milltown (Kerry)from €38