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Cheap flights from Ontario to Ireland from €371

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 28/1. 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
06:02 - 07:20ONT-DUB
17h 18m2 stops
United Airlines Logo
09:50 - 15:18DUB-ONT
37h 28m2 stops
€434United Airlines
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Wed, 6 May - Wed, 13 May
British Airways Logo
15:09 - 15:20ONT-DUB
16h 11m2 stops
British Airways Logo
20:40 - 18:45DUB-ONT
30h 05m2 stops
€437British Airways
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Mon, 12 Jan - Mon, 19 Jan
British Airways Logo
16:45 - 19:40ONT-DUB
18h 55m2 stops
British Airways Logo
10:20 - 22:48DUB-ONT
20h 28m2 stops
€438British Airways
Find Deal
Tue, 13 Jan - Wed, 21 Jan
United Airlines Logo
05:05 - 07:30ONT-DUB
18h 25m2 stops
United Airlines Logo
09:00 - 21:58DUB-ONT
20h 58m2 stops
€450United Airlines
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Wed, 14 Jan - Wed, 21 Jan
Multiple Airlines Logo
12:55 - 09:45ONT-DUB
12h 50m1 stop
Multiple Airlines Logo
11:45 - 17:45DUB-ONT
14h 00m1 stop
€453Multiple Airlines
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Tue, 5 May - Tue, 12 May
Iberia Logo
12:55 - 09:45ONT-DUB
12h 50m1 stop
Iberia Logo
13:45 - 21:56DUB-ONT
16h 11m1 stop
€454Iberia
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Wed, 15 Apr - Wed, 22 Apr
United Airlines Logo
06:00 - 07:30ONT-DUB
18h 30m2 stops
United Airlines Logo
11:35 - 23:06DUB-ONT
19h 31m2 stops
€458United Airlines
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Wed, 18 Mar - Wed, 1 Apr
Delta Logo
07:30 - 23:25ONT-ORK
31h 55m2 stops
Delta Logo
13:25 - 23:58ORK-ONT
42h 33m2 stops
€503Delta
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Thu, 15 Jan - Mon, 19 Jan
American Airlines Logo
17:06 - 16:45ONT-SNN
15h 39m2 stops
American Airlines Logo
07:50 - 16:24SNN-ONT
40h 34m2 stops
€567American Airlines
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Thu, 19 Feb - Mon, 23 Feb
American Airlines Logo
12:57 - 16:45ONT-SNN
19h 48m2 stops
American Airlines Logo
07:50 - 22:48SNN-ONT
22h 58m2 stops
€568American Airlines
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Thu, 15 Jan - Tue, 20 Jan

United Airlines flights from Ontario to Ireland

Our best United Airlines deals on Ontario to Ireland flight tickets
United Airlines
6 May
ONT06:02Ontario
17h 18m
2 stops
DUB07:20Dublin
13 May
DUB09:50Dublin
37h 28m
2 stops
ONT15:18Ontario
€434
Find similar
United Airlines
14 Jan
ONT05:05Ontario
18h 25m
2 stops
DUB07:30Dublin
21 Jan
DUB09:00Dublin
20h 58m
2 stops
ONT21:58Ontario
€450
Find similar
United Airlines
18 Mar
ONT06:00Ontario
18h 30m
2 stops
DUB07:30Dublin
1 Apr
DUB11:35Dublin
19h 31m
2 stops
ONT23:06Ontario
€458
Find similar

British Airways flights from Ontario to Ireland

Our best British Airways deals on Ontario to Ireland flight tickets
British Airways
12 Jan
ONT15:09Ontario
16h 11m
2 stops
DUB15:20Dublin
19 Jan
DUB20:40Dublin
30h 05m
2 stops
ONT18:45Ontario
€437
Find similar
British Airways
13 Jan
ONT16:45Ontario
18h 55m
2 stops
DUB19:40Dublin
21 Jan
DUB10:20Dublin
20h 28m
2 stops
ONT22:48Ontario
€438
Find similar
British Airways
22 Jan
ONT23:59Ontario
26h 01m
2 stops
DUB10:00Dublin
29 Jan
DUB20:40Dublin
28h 42m
2 stops
ONT17:22Ontario
€481
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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 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 6/5

06:02-07:20

2 stops17h 18m

Dublin

Wed 13/5

09:50-15:18

2 stops37h 28m

€434

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 12/1

15:09-15:20

2 stops16h 11m

Dublin

Mon 19/1

20:40-18:45

2 stops30h 05m

€437

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 13/1

16:45-19:40

2 stops18h 55m

Dublin

Wed 21/1

10:20-22:48

2 stops20h 28m

€438

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 14/1

05:05-07:30

2 stops18h 25m

Dublin

Wed 21/1

09:00-21:58

2 stops20h 58m

€450

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 5/5

12:55-09:45

1 stop12h 50m

Dublin

Tue 12/5

11:45-17:45

1 stop14h 00m

€453

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 15/4

12:55-09:45

1 stop12h 50m

Dublin

Wed 22/4

13:45-21:56

1 stop16h 11m

€454

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 18/3

06:00-07:30

2 stops18h 30m

Dublin

Wed 1/4

11:35-23:06

2 stops19h 31m

€458

OntarioCork

ONT - ORK

ONTORK

Ontario

Thu 15/1

07:30-23:25

2 stops31h 55m

Cork

Mon 19/1

13:25-23:58

2 stops42h 33m

€503

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 19/2

17:06-16:45

2 stops15h 39m

Shannon

Mon 23/2

07:50-16:24

2 stops40h 34m

€567

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 15/1

12:57-16:45

2 stops19h 48m

Shannon

Tue 20/1

07:50-22:48

2 stops22h 58m

€568

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 €530.

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

12h 23m

Direct flights

None
The fastest flight from Ontario to Ireland takes 12h 23m
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 €40
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