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Cheap flights from Ontario to Ireland from €282

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 29/8. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Ontario to Ireland

Cheap return flights

Enter your travel dates to find the best prices.
JetBlue Logo
23:59 - 09:00
ONT
-
DUB
25h 01m
1 stop
JetBlue Logo
11:30 - 22:37
DUB
-
ONT
19h 07m
1 stop
€732JetBlue
Thu, 13 Aug - Wed, 26 Aug
United Airlines Logo
07:00 - 07:30
ONT
-
SNN
16h 30m
1 stop
United Airlines Logo
09:30 - 22:59
SNN
-
ONT
21h 29m
1 stop
€734United Airlines
Thu, 3 Sep - Thu, 10 Sep
United Airlines Logo
07:00 - 07:30
ONT
-
SNN
16h 30m
1 stop
United Airlines Logo
09:30 - 20:53
SNN
-
ONT
19h 23m
2 stops
€737United Airlines
Thu, 3 Sep - Thu, 10 Sep
United Airlines Logo
07:00 - 07:30
ONT
-
SNN
16h 30m
1 stop
United Airlines Logo
12:30 - 22:59
SNN
-
ONT
18h 29m
2 stops
€742United Airlines
Fri, 21 Aug - Fri, 11 Sep
JetBlue Logo
23:59 - 09:00
ONT
-
DUB
25h 01m
1 stop
JetBlue Logo
11:30 - 22:35
DUB
-
ONT
19h 05m
1 stop
€747JetBlue
Sun, 23 Aug - Tue, 8 Sep
Air Canada Logo
05:00 - 07:45
ONT
-
DUB
18h 45m
2 stops
Air Canada Logo
09:20 - 12:12
DUB
-
ONT
34h 52m
2 stops
€760Air Canada
Tue, 8 Sep - Tue, 15 Sep
Multiple Airlines Logo
14:27 - 19:50
ONT
-
ORK
21h 23m
2 stops
Multiple Airlines Logo
07:10 - 20:07
ORK
-
ONT
20h 57m
2 stops
€984Multiple Airlines
Fri, 4 Sep - Fri, 11 Sep
British Airways Logo
14:27 - 19:50
ONT
-
ORK
21h 23m
2 stops
British Airways Logo
20:30 - 22:37
ORK
-
ONT
34h 07m
2 stops
€985British Airways
Sun, 6 Sep - Sun, 13 Sep
Delta Logo
13:06 - 16:40
ONT
-
ORK
19h 34m
2 stops
Delta Logo
06:15 - 22:40
ORK
-
ONT
24h 25m
2 stops
€1,017Delta
Fri, 4 Sep - Fri, 11 Sep
Multiple Airlines Logo
05:00 - 15:10
ONT
-
ORK
26h 10m
3 stops
Multiple Airlines Logo
07:10 - 11:16
ORK
-
ONT
36h 06m
2 stops
€1,431Multiple Airlines
Fri, 4 Sep - Fri, 11 Sep

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Iberia flights from Ontario to Ireland

Our best Iberia deals on Ontario to Ireland flight tickets
Iberia
17 Aug
ONT10:29Ontario
15h 16m
1 stop
DUB09:45Dublin
1 Sept
DUB12:40Dublin
18h 19m
1 stop
ONT22:59Ontario
€766
Iberia
25 Aug
ONT12:33Ontario
13h 12m
1 stop
DUB09:45Dublin
8 Sept
DUB12:40Dublin
18h 19m
1 stop
ONT22:59Ontario
€776
Iberia
23 Aug
ONT12:33Ontario
13h 12m
1 stop
DUB09:45Dublin
8 Sept
DUB12:40Dublin
18h 19m
1 stop
ONT22:59Ontario
€779

JetBlue flights from Ontario to Ireland

Our best JetBlue deals on Ontario to Ireland flight tickets
JetBlue
13 Aug
ONT23:59Ontario
25h 01m
1 stop
DUB09:00Dublin
26 Aug
DUB11:30Dublin
19h 07m
1 stop
ONT22:37Ontario
€732
JetBlue
23 Aug
ONT23:59Ontario
25h 01m
1 stop
DUB09:00Dublin
8 Sept
DUB11:30Dublin
19h 05m
1 stop
ONT22:35Ontario
€747
JetBlue
23 Aug
ONT23:59Ontario
25h 01m
1 stop
DUB09:00Dublin
8 Sept
DUB11:30Dublin
19h 07m
1 stop
ONT22:37Ontario
€748

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 25 July 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

Cheapest return flight

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Thu 13/8

23:59-09:00

1 stop25h 01m

Dublin

Wed 26/8

11:30-22:37

1 stop19h 07m

€732

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 3/9

07:00-07:30

1 stop16h 30m

Shannon

Thu 10/9

09:30-22:59

1 stop21h 29m

€734

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 3/9

07:00-07:30

1 stop16h 30m

Shannon

Thu 10/9

09:30-20:53

2 stops19h 23m

€737
Fastest return journey

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Fri 21/8

07:00-07:30

1 stop16h 30m

Shannon

Fri 11/9

12:30-22:59

2 stops18h 29m

€742

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 23/8

23:59-09:00

1 stop25h 01m

Dublin

Tue 8/9

11:30-22:35

1 stop19h 05m

€747

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 8/9

05:00-07:45

2 stops18h 45m

Dublin

Tue 15/9

09:20-12:12

2 stops34h 52m

€760

OntarioCork

ONT - ORK

ONTORK

Ontario

Fri 4/9

14:27-19:50

2 stops21h 23m

Cork

Fri 11/9

07:10-20:07

2 stops20h 57m

€984

OntarioCork

ONT - ORK

ONTORK

Ontario

Sun 6/9

14:27-19:50

2 stops21h 23m

Cork

Sun 13/9

20:30-22:37

2 stops34h 07m

€985

OntarioCork

ONT - ORK

ONTORK

Ontario

Fri 4/9

13:06-16:40

2 stops19h 34m

Cork

Fri 11/9

06:15-22:40

2 stops24h 25m

€1,017

OntarioCork

ONT - ORK

ONTORK

Ontario

Fri 4/9

05:00-15:10

3 stops26h 10m

Cork

Fri 11/9

07:10-11:16

2 stops36h 06m

€1,431

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?

JetBlue, United Airlines, 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

12h 27m

Direct flights

None
The fastest flight from Ontario to Ireland takes 12h 27m
There are no direct flights from Ontario to Ireland. There are no popular flight routes from Ontario to Ireland.
Search flight deals

Frequently asked questions about flying from Ontario to Ireland

  • 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
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