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Cheap flights from Ontario to Ireland from €383

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 22/2. 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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Find the cheapest flights from Ontario to Ireland

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
13:00 - 07:30
ONT
-
SNN
34h 30m
2 stops
United Airlines Logo
09:30 - 22:26
SNN
-
ONT
20h 56m
1 stop
€532United Airlines
Sat, 30 May - Wed, 12 Aug
United Airlines Logo
23:59 - 07:30
ONT
-
DUB
24h 31m
2 stops
United Airlines Logo
09:50 - 12:38
DUB
-
ONT
34h 48m
2 stops
€532United Airlines
Sun, 22 Mar - Tue, 28 Apr
British Airways Logo
14:39 - 17:00
ONT
-
DUB
18h 21m
2 stops
British Airways Logo
18:00 - 19:45
DUB
-
ONT
33h 45m
2 stops
€534British Airways
Tue, 24 Feb - Tue, 3 Mar
United Airlines Logo
23:59 - 09:45
ONT
-
DUB
25h 46m
1 stop
United Airlines Logo
09:20 - 12:22
DUB
-
ONT
35h 02m
2 stops
€535United Airlines
Sat, 28 Mar - Fri, 1 May
Air Canada Logo
05:00 - 07:10
ONT
-
DUB
18h 10m
2 stops
Air Canada Logo
09:50 - 17:47
DUB
-
ONT
39h 57m
2 stops
€536Air Canada
Sun, 22 Feb - Tue, 14 Apr
British Airways Logo
07:30 - 09:40
ONT
-
DUB
18h 10m
2 stops
British Airways Logo
20:30 - 21:06
DUB
-
ONT
32h 36m
2 stops
€538British Airways
Tue, 28 Apr - Wed, 6 May
Air Canada Logo
13:43 - 08:15
ONT
-
DUB
58h 32m
2 stops
Air Canada Logo
09:50 - 17:52
DUB
-
ONT
40h 02m
2 stops
€542Air Canada
Fri, 24 Apr - Tue, 12 May
Multiple Airlines Logo
13:15 - 22:55
ONT
-
DUB
25h 40m
2 stops
Multiple Airlines Logo
05:55 - 21:05
DUB
-
ONT
23h 10m
2 stops
€551Multiple Airlines
Wed, 18 Feb - Tue, 24 Feb
Delta Logo
22:25 - 08:45
ONT
-
DUB
27h 20m
2 stops
Delta Logo
08:55 - 22:37
DUB
-
ONT
21h 42m
2 stops
€552Delta
Sun, 22 Mar - Wed, 29 Apr
Delta Logo
13:15 - 07:45
ONT
-
DUB
34h 30m
1 stop
Delta Logo
08:55 - 17:15
DUB
-
ONT
40h 20m
2 stops
€555Delta
Sun, 22 Feb - Mon, 13 Apr

KLM flights from Ontario to Ireland

Our best KLM deals on Ontario to Ireland flight tickets
KLM
5 May
ONT07:00Ontario
17h 45m
1 stop
DUB08:45Dublin
15 May
DUB11:00Dublin
15h 15m
1 stop
ONT18:15Ontario
€619
KLM
25 Apr
ONT07:00Ontario
17h 45m
1 stop
DUB08:45Dublin
29 May
DUB11:00Dublin
15h 15m
1 stop
ONT18:15Ontario
€646

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
14 Apr
DUB09:50Dublin
39h 57m
2 stops
ONT17:47Ontario
€536
Air Canada
24 Apr
ONT13:43Ontario
58h 32m
2 stops
DUB08:15Dublin
12 May
DUB09:50Dublin
40h 02m
2 stops
ONT17:52Ontario
€542
Air Canada
26 Feb
ONT05:00Ontario
18h 10m
2 stops
DUB07:10Dublin
15 Apr
DUB09:50Dublin
42h 46m
2 stops
ONT20:36Ontario
€563

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 28 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

Sat 30/5

13:00-07:30

2 stops34h 30m

Shannon

Wed 12/8

09:30-22:26

1 stop20h 56m

€532

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 22/3

23:59-07:30

2 stops24h 31m

Dublin

Tue 28/4

09:50-12:38

2 stops34h 48m

€532

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 24/2

14:39-17:00

2 stops18h 21m

Dublin

Tue 3/3

18:00-19:45

2 stops33h 45m

€534

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 28/3

23:59-09:45

1 stop25h 46m

Dublin

Fri 1/5

09:20-12:22

2 stops35h 02m

€535

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 22/2

05:00-07:10

2 stops18h 10m

Dublin

Tue 14/4

09:50-17:47

2 stops39h 57m

€536

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 28/4

07:30-09:40

2 stops18h 10m

Dublin

Wed 6/5

20:30-21:06

2 stops32h 36m

€538

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 24/4

13:43-08:15

2 stops58h 32m

Dublin

Tue 12/5

09:50-17:52

2 stops40h 02m

€542

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 18/2

13:15-22:55

2 stops25h 40m

Dublin

Tue 24/2

05:55-21:05

2 stops23h 10m

€551

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 22/3

22:25-08:45

2 stops27h 20m

Dublin

Wed 29/4

08:55-22:37

2 stops21h 42m

€552

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 22/2

13:15-07:45

1 stop34h 30m

Dublin

Mon 13/4

08:55-17:15

2 stops40h 20m

€555

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, American Airlines, 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

16h 05m

Direct flights

None
The fastest flight from Ontario to Ireland takes 16h 05m
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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