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Cheap flights from Ontario to Ireland from €405

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 8/2. 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.
United Airlines Logo
06:10 - 07:30ONT-DUB
17h 20m2 stops
United Airlines Logo
10:40 - 20:58DUB-ONT
18h 18m2 stops
€482United Airlines
Find Deal
Mon, 19 Jan - Fri, 30 Jan
United Airlines Logo
06:00 - 08:10ONT-DUB
18h 10m2 stops
United Airlines Logo
09:00 - 12:47DUB-ONT
35h 47m2 stops
€501United Airlines
Find Deal
Fri, 30 Jan - Fri, 6 Feb
United Airlines Logo
06:10 - 07:30ONT-DUB
17h 20m2 stops
United Airlines Logo
10:40 - 20:58DUB-ONT
18h 18m2 stops
€525United Airlines
Find Deal
Fri, 9 Jan - Thu, 22 Jan
United Airlines Logo
06:10 - 08:10ONT-DUB
18h 00m2 stops
United Airlines Logo
10:40 - 20:58DUB-ONT
18h 18m2 stops
€547United Airlines
Find Deal
Thu, 1 Jan - Thu, 15 Jan
Air Canada Logo
05:10 - 08:15ONT-DUB
19h 05m2 stops
Air Canada Logo
09:20 - 23:06DUB-ONT
21h 46m2 stops
€555Air Canada
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Tue, 28 Apr - Wed, 13 May
Iberia Logo
11:01 - 09:45ONT-DUB
14h 44m1 stop
Iberia Logo
13:45 - 23:40DUB-ONT
17h 55m1 stop
€568Iberia
Find Deal
Wed, 15 Apr - Wed, 29 Apr
American Airlines Logo
16:45 - 16:45ONT-SNN
16h 00m2 stops
American Airlines Logo
07:50 - 22:48SNN-ONT
22h 58m2 stops
€582American Airlines
Find Deal
Sun, 11 Jan - Sat, 24 Jan
Delta Logo
13:09 - 23:25ONT-ORK
26h 16m2 stops
Delta Logo
13:25 - 23:53ORK-ONT
42h 28m2 stops
€661Delta
Find Deal
Fri, 13 Feb - Tue, 17 Feb
Delta Logo
13:09 - 23:25ONT-ORK
26h 16m2 stops
Delta Logo
13:25 - 23:53ORK-ONT
42h 28m2 stops
€704Delta
Find Deal
Fri, 13 Feb - Tue, 17 Feb
American Airlines Logo
13:32 - 16:45ONT-SNN
20h 13m2 stops
American Airlines Logo
21:15 - 17:49SNN-ONT
28h 34m2 stops
€748American Airlines
Find Deal
Thu, 26 Mar - Mon, 30 Mar

British Airways flights from Ontario to Ireland

Our best British Airways deals on Ontario to Ireland flight tickets
British Airways
16 Jan
ONT10:58Ontario
16h 17m
2 stops
DUB11:15Dublin
23 Jan
DUB06:40Dublin
18h 42m
2 stops
ONT17:22Ontario
€730
Find similar
British Airways
21 Mar
ONT17:02Ontario
16h 33m
2 stops
DUB16:35Dublin
4 Apr
DUB11:15Dublin
18h 47m
2 stops
ONT22:02Ontario
€759
Find similar
British Airways
11 Mar
ONT15:09Ontario
17h 16m
2 stops
ORK15:25Cork
25 Mar
ORK11:55Cork
18h 48m
2 stops
ONT23:43Ontario
€796
Find similar

United Airlines flights from Ontario to Ireland

Our best United Airlines deals on Ontario to Ireland flight tickets
United Airlines
11 Feb
ONT06:10Ontario
17h 20m
2 stops
DUB07:30Dublin
15 Feb
DUB09:00Dublin
45h 57m
2 stops
ONT22:57Ontario
€501
Find similar
United Airlines
9 Jan
ONT06:10Ontario
17h 20m
2 stops
DUB07:30Dublin
22 Jan
DUB10:40Dublin
18h 18m
2 stops
ONT20:58Ontario
€525
Find similar
United Airlines
11 Mar
ONT06:00Ontario
18h 30m
2 stops
DUB07:30Dublin
25 Mar
DUB08:00Dublin
21h 25m
2 stops
ONT22:25Ontario
€564
Find similar

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 19 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

Mon 19/1

06:10-07:30

2 stops17h 20m

Dublin

Fri 30/1

10:40-20:58

2 stops18h 18m

€482

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 30/1

06:00-08:10

2 stops18h 10m

Dublin

Fri 6/2

09:00-12:47

2 stops35h 47m

€501

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 9/1

06:10-07:30

2 stops17h 20m

Dublin

Thu 22/1

10:40-20:58

2 stops18h 18m

€525

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Thu 1/1

06:10-08:10

2 stops18h 00m

Dublin

Thu 15/1

10:40-20:58

2 stops18h 18m

€547

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 28/4

05:10-08:15

2 stops19h 05m

Dublin

Wed 13/5

09:20-23:06

2 stops21h 46m

€555

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 15/4

11:01-09:45

1 stop14h 44m

Dublin

Wed 29/4

13:45-23:40

1 stop17h 55m

€568

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Sun 11/1

16:45-16:45

2 stops16h 00m

Shannon

Sat 24/1

07:50-22:48

2 stops22h 58m

€582

OntarioCork

ONT - ORK

ONTORK

Ontario

Fri 13/2

13:09-23:25

2 stops26h 16m

Cork

Tue 17/2

13:25-23:53

2 stops42h 28m

€661

OntarioCork

ONT - ORK

ONTORK

Ontario

Fri 13/2

13:09-23:25

2 stops26h 16m

Cork

Tue 17/2

13:25-23:53

2 stops42h 28m

€704

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 26/3

13:32-16:45

2 stops20h 13m

Shannon

Mon 30/3

21:15-17:49

2 stops28h 34m

€748

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 €532.

Cheap Ontario to Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Ireland

Direct flights

None
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

Popular Cities in Ireland

Popular flights according to clicks in the last 7 days on momondo
Flights to Dublinfrom €40
Flights to Corkfrom €93
Flights to Shannon, Clarefrom €110
Flights to Donegalfrom €277
Flights to Milltown (Kerry)from €39