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Cheap flights from Ontario to Ireland from €401

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 1/12. 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

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 - 22:49DUB-ONT
21h 49m3 stops
€472United Airlines
Find Deal
Mon, 1 Dec - Wed, 10 Dec
United Airlines Logo
07:00 - 09:55ONT-DUB
18h 55m2 stops
United Airlines Logo
09:00 - 22:49DUB-ONT
21h 49m3 stops
€476United Airlines
Find Deal
Mon, 1 Dec - Wed, 10 Dec
Iberia Logo
07:00 - 07:10ONT-DUB
16h 10m1 stop
Iberia Logo
12:55 - 22:28DUB-ONT
17h 33m1 stop
€519Iberia
Find Deal
Fri, 28 Nov - Fri, 5 Dec
Iberia Logo
07:00 - 07:10ONT-DUB
16h 10m1 stop
Iberia Logo
12:55 - 22:28DUB-ONT
17h 33m1 stop
€520Iberia
Find Deal
Fri, 28 Nov - Fri, 5 Dec
Delta Logo
07:05 - 08:45ONT-DUB
17h 40m2 stops
Delta Logo
10:45 - 21:07DUB-ONT
18h 22m2 stops
€567Delta
Find Deal
Sat, 13 Dec - Fri, 9 Jan
Delta Logo
07:05 - 07:45ONT-DUB
16h 40m1 stop
Delta Logo
09:45 - 19:39DUB-ONT
17h 54m1 stop
€592Delta
Find Deal
Mon, 1 Dec - Wed, 10 Dec
British Airways Logo
15:09 - 15:40ONT-DUB
16h 31m2 stops
British Airways Logo
12:05 - 22:31DUB-ONT
18h 26m2 stops
€640British Airways
Find Deal
Sun, 8 Feb - Thu, 26 Feb
Multiple Airlines Logo
10:50 - 07:10ONT-DUB
12h 20m1 stop
Multiple Airlines Logo
11:45 - 17:45DUB-ONT
14h 00m1 stop
€646Multiple Airlines
Find Deal
Sun, 4 Jan - Sun, 10 May
Multiple Airlines Logo
10:50 - 07:10ONT-DUB
12h 20m1 stop
Multiple Airlines Logo
13:00 - 22:48DUB-ONT
17h 48m1 stop
€662Multiple Airlines
Find Deal
Sun, 28 Dec - Wed, 7 Jan
British Airways Logo
15:08 - 15:40ONT-DUB
16h 32m2 stops
British Airways Logo
12:05 - 22:23DUB-ONT
18h 18m2 stops
€681British Airways
Find Deal
Tue, 11 Nov - Thu, 20 Nov

United Airlines flights from Ontario to Ireland

Our best United Airlines deals on Ontario to Ireland flight tickets
United Airlines
1 Dec
ONT07:00Ontario
17h 10m
1 stop
DUB08:10Dublin
10 Dec
DUB09:00Dublin
21h 49m
2 stops
ONT22:49Ontario
€472
Find similar
United Airlines
1 Dec
ONT07:00Ontario
18h 55m
2 stops
DUB09:55Dublin
10 Dec
DUB09:00Dublin
21h 49m
3 stops
ONT22:49Ontario
€476
Find similar
United Airlines
5 Nov
ONT07:00Ontario
17h 10m
1 stop
DUB08:10Dublin
13 Nov
DUB12:05Dublin
18h 46m
2 stops
ONT22:51Ontario
€477
Find similar

Iberia flights from Ontario to Ireland

Our best Iberia deals on Ontario to Ireland flight tickets
Iberia
28 Nov
ONT07:00Ontario
16h 10m
1 stop
DUB07:10Dublin
5 Dec
DUB12:55Dublin
17h 33m
1 stop
ONT22:28Ontario
€519
Find similar
Iberia
28 Nov
ONT07:00Ontario
16h 10m
1 stop
DUB07:10Dublin
5 Dec
DUB12:55Dublin
17h 33m
1 stop
ONT22:28Ontario
€520
Find similar
Iberia
8 Nov
ONT07:00Ontario
16h 10m
1 stop
DUB07:10Dublin
15 Nov
DUB12:55Dublin
17h 34m
1 stop
ONT22:29Ontario
€562
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 30 October 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 1/12

07:00-08:10

1 stop17h 10m

Dublin

Wed 10/12

09:00-22:49

3 stops21h 49m

€472

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 1/12

07:00-09:55

2 stops18h 55m

Dublin

Wed 10/12

09:00-22:49

3 stops21h 49m

€476

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 28/11

07:00-07:10

1 stop16h 10m

Dublin

Fri 5/12

12:55-22:28

1 stop17h 33m

€519

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 28/11

07:00-07:10

1 stop16h 10m

Dublin

Fri 5/12

12:55-22:28

1 stop17h 33m

€520

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 13/12

07:05-08:45

2 stops17h 40m

Dublin

Fri 9/1

10:45-21:07

2 stops18h 22m

€567

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 1/12

07:05-07:45

1 stop16h 40m

Dublin

Wed 10/12

09:45-19:39

1 stop17h 54m

€592

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 8/2

15:09-15:40

2 stops16h 31m

Dublin

Thu 26/2

12:05-22:31

2 stops18h 26m

€640

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 4/1

10:50-07:10

1 stop12h 20m

Dublin

Sun 10/5

11:45-17:45

1 stop14h 00m

€646

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 28/12

10:50-07:10

1 stop12h 20m

Dublin

Wed 7/1

13:00-22:48

1 stop17h 48m

€662

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 11/11

15:08-15:40

2 stops16h 32m

Dublin

Thu 20/11

12:05-22:23

2 stops18h 18m

€681

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 €524.

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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