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Cheap flights from Ontario to Ireland from €195

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 5/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Find the cheapest flights from Ontario to Ireland

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
07:00 - 09:45
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
09:50 - 22:45
DUB
-
ONT
44h 55m
2 stops
€536United Airlines
Tue, 14 Apr - Tue, 28 Apr
British Airways Logo
14:08 - 18:50
ONT
-
DUB
20h 42m
2 stops
British Airways Logo
08:35 - 22:35
DUB
-
ONT
22h 00m
2 stops
€541British Airways
Tue, 14 Apr - Tue, 28 Apr
United Airlines Logo
06:10 - 08:10
ONT
-
DUB
18h 00m
2 stops
United Airlines Logo
10:40 - 20:50
DUB
-
ONT
18h 10m
2 stops
€558United Airlines
Mon, 16 Feb - Tue, 24 Feb
United Airlines Logo
06:10 - 08:10
ONT
-
DUB
18h 00m
2 stops
United Airlines Logo
09:30 - 20:50
DUB
-
ONT
19h 20m
2 stops
€559United Airlines
Mon, 16 Feb - Tue, 24 Feb
United Airlines Logo
05:10 - 10:40
ONT
-
DUB
21h 30m
3 stops
United Airlines Logo
09:50 - 20:36
DUB
-
ONT
18h 46m
2 stops
€560United Airlines
Tue, 14 Apr - Tue, 28 Apr
United Airlines Logo
06:05 - 07:20
ONT
-
DUB
17h 15m
2 stops
United Airlines Logo
11:35 - 22:26
DUB
-
ONT
18h 51m
1 stop
€563United Airlines
Wed, 1 Apr - Fri, 10 Apr
United Airlines Logo
07:00 - 09:45
ONT
-
DUB
18h 45m
1 stop
United Airlines Logo
09:50 - 20:36
DUB
-
ONT
42h 46m
2 stops
€564United Airlines
Fri, 24 Apr - Tue, 28 Apr
United Airlines Logo
05:10 - 07:30
ONT
-
DUB
18h 20m
2 stops
United Airlines Logo
09:50 - 20:36
DUB
-
ONT
42h 46m
2 stops
€568United Airlines
Fri, 24 Apr - Tue, 28 Apr
Air Canada Logo
05:10 - 08:15
ONT
-
DUB
43h 05m
2 stops
Air Canada Logo
09:50 - 20:36
DUB
-
ONT
42h 46m
2 stops
€572Air Canada
Sun, 5 Apr - Mon, 13 Apr
British Airways Logo
10:59 - 14:30
ONT
-
DUB
19h 31m
2 stops
British Airways Logo
08:35 - 20:27
DUB
-
ONT
19h 52m
2 stops
€573British Airways
Thu, 30 Apr - Tue, 12 May

Air Canada flights from Ontario to Ireland

Our best Air Canada deals on Ontario to Ireland flight tickets
Air Canada
5 Apr
ONT05:10Ontario
43h 05m
2 stops
DUB08:15Dublin
13 Apr
DUB09:50Dublin
42h 46m
2 stops
ONT20:36Ontario
€572
Air Canada
5 May
ONT06:00Ontario
17h 45m
2 stops
DUB07:45Dublin
15 May
DUB09:50Dublin
40h 02m
2 stops
ONT17:52Ontario
€597
Air Canada
3 Apr
ONT05:10Ontario
43h 05m
2 stops
DUB08:15Dublin
13 Apr
DUB09:50Dublin
34h 48m
2 stops
ONT12:38Ontario
€600

British Airways flights from Ontario to Ireland

Our best British Airways deals on Ontario to Ireland flight tickets
British Airways
14 Apr
ONT14:08Ontario
20h 42m
2 stops
DUB18:50Dublin
28 Apr
DUB08:35Dublin
22h 00m
2 stops
ONT22:35Ontario
€541
British Airways
30 Apr
ONT10:59Ontario
19h 31m
2 stops
DUB14:30Dublin
12 May
DUB08:35Dublin
19h 52m
2 stops
ONT20:27Ontario
€573
British Airways
24 Apr
ONT14:08Ontario
19h 42m
2 stops
DUB17:50Dublin
12 May
DUB08:35Dublin
19h 52m
2 stops
ONT20:27Ontario
€583

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 4 February 2026.
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

Tue 14/4

07:00-09:45

1 stop18h 45m

Dublin

Tue 28/4

09:50-22:45

2 stops44h 55m

€536

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 14/4

14:08-18:50

2 stops20h 42m

Dublin

Tue 28/4

08:35-22:35

2 stops22h 00m

€541

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 16/2

06:10-08:10

2 stops18h 00m

Dublin

Tue 24/2

10:40-20:50

2 stops18h 10m

€558

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Mon 16/2

06:10-08:10

2 stops18h 00m

Dublin

Tue 24/2

09:30-20:50

2 stops19h 20m

€559

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 14/4

05:10-10:40

3 stops21h 30m

Dublin

Tue 28/4

09:50-20:36

2 stops18h 46m

€560

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 1/4

06:05-07:20

2 stops17h 15m

Dublin

Fri 10/4

11:35-22:26

1 stop18h 51m

€563

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 24/4

07:00-09:45

1 stop18h 45m

Dublin

Tue 28/4

09:50-20:36

2 stops42h 46m

€564

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 24/4

05:10-07:30

2 stops18h 20m

Dublin

Tue 28/4

09:50-20:36

2 stops42h 46m

€568

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 5/4

05:10-08:15

2 stops43h 05m

Dublin

Mon 13/4

09:50-20:36

2 stops42h 46m

€572

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Thu 30/4

10:59-14:30

2 stops19h 31m

Dublin

Tue 12/5

08:35-20:27

2 stops19h 52m

€573

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 airline that flies from Ontario to Ireland?

United Airlines, JetBlue, and British Airways are the most popular carriers operating from Ontario to Ireland

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

15h 38m

Direct flights

None
The fastest flight from Ontario to Ireland takes 15h 38m
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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