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Cheap flights from Ontario to Ireland from €153

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 4/2. 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.
British Airways Logo
17:02 - 19:25
ONT
-
SNN
18h 23m
2 stops
British Airways Logo
07:50 - 21:24
SNN
-
ONT
21h 34m
2 stops
€350British Airways
Mon, 16 Feb - Thu, 26 Feb
British Airways Logo
14:39 - 16:45
ONT
-
SNN
18h 06m
2 stops
British Airways Logo
07:50 - 23:59
SNN
-
ONT
23h 09m
2 stops
€360British Airways
Wed, 4 Mar - Wed, 18 Mar
British Airways Logo
10:59 - 11:20
ONT
-
SNN
16h 21m
2 stops
British Airways Logo
07:40 - 22:35
SNN
-
ONT
22h 55m
2 stops
€403British Airways
Thu, 23 Apr - Wed, 6 May
British Airways Logo
14:39 - 15:45
ONT
-
SNN
17h 06m
2 stops
British Airways Logo
07:50 - 19:45
SNN
-
ONT
19h 55m
2 stops
€404British Airways
Fri, 13 Feb - Wed, 18 Feb
British Airways Logo
14:39 - 15:40
ONT
-
DUB
18h 01m
2 stops
British Airways Logo
13:00 - 22:07
DUB
-
ONT
17h 07m
2 stops
€412British Airways
Wed, 18 Mar - Thu, 2 Apr
Air Canada Logo
05:00 - 07:10
ONT
-
DUB
18h 10m
2 stops
Air Canada Logo
08:00 - 20:50
DUB
-
ONT
43h 50m
2 stops
€418Air Canada
Sun, 22 Feb - Wed, 11 Mar
United Airlines Logo
07:00 - 10:15
ONT
-
SNN
19h 15m
2 stops
United Airlines Logo
12:30 - 22:45
SNN
-
ONT
18h 15m
2 stops
€423United Airlines
Wed, 15 Apr - Wed, 29 Apr
Multiple Airlines Logo
10:56 - 17:00
ONT
-
DUB
22h 04m
2 stops
Multiple Airlines Logo
06:15 - 23:59
DUB
-
ONT
25h 44m
2 stops
€431Multiple Airlines
Wed, 25 Feb - Thu, 5 Mar
United Airlines Logo
06:00 - 07:30
ONT
-
DUB
18h 30m
2 stops
United Airlines Logo
10:40 - 22:18
DUB
-
ONT
18h 38m
1 stop
€437United Airlines
Wed, 18 Mar - Wed, 25 Mar
American Airlines Logo
06:00 - 06:20
ONT
-
SNN
16h 20m
2 stops
American Airlines Logo
14:45 - 16:05
SNN
-
ONT
33h 20m
2 stops
€476American Airlines
Sat, 31 Jan - Sat, 7 Feb

Air Canada flights from Ontario to Ireland

Our best Air Canada deals on Ontario to Ireland flight tickets
Air Canada
22 Feb
ONT05:00Ontario
18h 10m
2 stops
DUB07:10Dublin
11 Mar
DUB08:00Dublin
43h 50m
2 stops
ONT20:50Ontario
€418
Air Canada
25 Feb
ONT13:45Ontario
33h 25m
2 stops
DUB07:10Dublin
11 Mar
DUB08:00Dublin
43h 50m
2 stops
ONT20:50Ontario
€466
Air Canada
22 Feb
ONT05:00Ontario
18h 10m
2 stops
DUB07:10Dublin
13 Mar
DUB08:00Dublin
43h 50m
2 stops
ONT20:50Ontario
€481

American Airlines flights from Ontario to Ireland

Our best American Airlines deals on Ontario to Ireland flight tickets
American Airlines
24 Apr
ONT10:59Ontario
16h 21m
2 stops
DUB11:20Dublin
30 Apr
DUB09:30Dublin
22h 16m
1 stop
ONT23:46Ontario
€472
American Airlines
31 Jan
ONT06:00Ontario
16h 20m
2 stops
SNN06:20Shannon
7 Feb
SNN14:45Shannon
33h 20m
2 stops
ONT16:05Ontario
€476
American Airlines
25 Jan
ONT06:22Ontario
15h 58m
2 stops
SNN06:20Shannon
10 Feb
SNN07:50Shannon
22h 58m
2 stops
ONT22:48Ontario
€653

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 14 January 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

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Mon 16/2

17:02-19:25

2 stops18h 23m

Shannon

Thu 26/2

07:50-21:24

2 stops21h 34m

€350

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Wed 4/3

14:39-16:45

2 stops18h 06m

Shannon

Wed 18/3

07:50-23:59

2 stops23h 09m

€360

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 23/4

10:59-11:20

2 stops16h 21m

Shannon

Wed 6/5

07:40-22:35

2 stops22h 55m

€403

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Fri 13/2

14:39-15:45

2 stops17h 06m

Shannon

Wed 18/2

07:50-19:45

2 stops19h 55m

€404

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 18/3

14:39-15:40

2 stops18h 01m

Dublin

Thu 2/4

13:00-22:07

2 stops17h 07m

€412

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 22/2

05:00-07:10

2 stops18h 10m

Dublin

Wed 11/3

08:00-20:50

2 stops43h 50m

€418

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Wed 15/4

07:00-10:15

2 stops19h 15m

Shannon

Wed 29/4

12:30-22:45

2 stops18h 15m

€423

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 25/2

10:56-17:00

2 stops22h 04m

Dublin

Thu 5/3

06:15-23:59

2 stops25h 44m

€431

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 18/3

06:00-07:30

2 stops18h 30m

Dublin

Wed 25/3

10:40-22:18

1 stop18h 38m

€437

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Sat 31/1

06:00-06:20

2 stops16h 20m

Shannon

Sat 7/2

14:45-16:05

2 stops33h 20m

€476

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?

British Airways and United Airlines 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 33m

Direct flights

None
The fastest flight from Ontario to Ireland takes 15h 33m
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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