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Cheap flights from Ontario to Ireland from €336

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 4/5. 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.
British Airways Logo
16:45 - 17:05
ONT
-
DUB
16h 20m2 stops
British Airways Logo
08:50 - 22:48
DUB
-
ONT
21h 58m2 stops
€542British Airways
Mon, 12 Jan - Wed, 28 Jan
Iberia Logo
10:56 - 09:45
ONT
-
DUB
14h 49m1 stop
Iberia Logo
13:45 - 23:40
DUB
-
ONT
17h 55m1 stop
€560Iberia
Sun, 5 Apr - Thu, 16 Apr
United Airlines Logo
07:00 - 09:45
ONT
-
DUB
18h 45m1 stop
United Airlines Logo
09:50 - 22:52
DUB
-
ONT
45h 02m2 stops
€564United Airlines
Thu, 30 Apr - Thu, 7 May
United Airlines Logo
07:00 - 07:20
ONT
-
DUB
16h 20m2 stops
United Airlines Logo
09:50 - 22:26
DUB
-
ONT
44h 36m2 stops
€567United Airlines
Thu, 30 Apr - Thu, 7 May
British Airways Logo
16:45 - 19:40
ONT
-
DUB
18h 55m2 stops
British Airways Logo
20:40 - 18:45
DUB
-
ONT
30h 05m2 stops
€570British Airways
Sun, 11 Jan - Sat, 17 Jan
Multiple Airlines Logo
05:05 - 07:10
ONT
-
DUB
18h 05m2 stops
Multiple Airlines Logo
09:25 - 21:58
DUB
-
ONT
20h 33m2 stops
€578Multiple Airlines
Fri, 16 Jan - Fri, 23 Jan
Multiple Airlines Logo
06:00 - 14:45
ONT
-
ORK
24h 45m2 stops
Multiple Airlines Logo
06:00 - 21:05
ORK
-
ONT
23h 05m2 stops
€582Multiple Airlines
Thu, 29 Jan - Thu, 5 Feb
British Airways Logo
16:45 - 16:45
ONT
-
SNN
16h 00m2 stops
British Airways Logo
17:30 - 22:48
SNN
-
ONT
37h 18m2 stops
€584British Airways
Thu, 29 Jan - Mon, 2 Feb
KLM Logo
07:00 - 08:45
ONT
-
DUB
17h 45m1 stop
KLM Logo
08:55 - 22:09
DUB
-
ONT
21h 14m2 stops
€585KLM
Thu, 16 Apr - Thu, 30 Apr
JetBlue Logo
23:25 - 05:55
ONT
-
SNN
22h 30m1 stop
JetBlue Logo
14:40 - 22:09
SNN
-
ONT
15h 29m1 stop
€1,296JetBlue
Tue, 26 May - Fri, 5 Jun

British Airways flights from Ontario to Ireland

Our best British Airways deals on Ontario to Ireland flight tickets
British Airways
12 Jan
ONT16:45Ontario
16h 20m
2 stops
DUB17:05Dublin
28 Jan
DUB08:50Dublin
21h 58m
2 stops
ONT22:48Ontario
€542
Find similar
British Airways
11 Jan
ONT16:45Ontario
18h 55m
2 stops
DUB19:40Dublin
17 Jan
DUB20:40Dublin
30h 05m
2 stops
ONT18:45Ontario
€570
Find similar
British Airways
29 Jan
ONT16:45Ontario
16h 00m
2 stops
SNN16:45Shannon
2 Feb
SNN17:30Shannon
37h 18m
2 stops
ONT22:48Ontario
€584
Find similar

Iberia flights from Ontario to Ireland

Our best Iberia deals on Ontario to Ireland flight tickets
Iberia
5 Apr
ONT10:56Ontario
14h 49m
1 stop
DUB09:45Dublin
16 Apr
DUB13:45Dublin
17h 55m
1 stop
ONT23:40Ontario
€560
Find similar
Iberia
21 Apr
ONT06:43Ontario
19h 02m
1 stop
DUB09:45Dublin
30 Apr
DUB13:45Dublin
16h 11m
1 stop
ONT21:56Ontario
€727
Find similar
Iberia
29 Mar
ONT10:56Ontario
14h 49m
1 stop
DUB09:45Dublin
7 Apr
DUB12:40Dublin
17h 16m
1 stop
ONT21:56Ontario
€754
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 15 December 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 12/1

16:45-17:05

2 stops16h 20m

Dublin

Wed 28/1

08:50-22:48

2 stops21h 58m

€542

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 5/4

10:56-09:45

1 stop14h 49m

Dublin

Thu 16/4

13:45-23:40

1 stop17h 55m

€560

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Thu 30/4

07:00-09:45

1 stop18h 45m

Dublin

Thu 7/5

09:50-22:52

2 stops45h 02m

€564

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Thu 30/4

07:00-07:20

2 stops16h 20m

Dublin

Thu 7/5

09:50-22:26

2 stops44h 36m

€567

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 11/1

16:45-19:40

2 stops18h 55m

Dublin

Sat 17/1

20:40-18:45

2 stops30h 05m

€570

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 16/1

05:05-07:10

2 stops18h 05m

Dublin

Fri 23/1

09:25-21:58

2 stops20h 33m

€578

OntarioCork

ONT - ORK

ONTORK

Ontario

Thu 29/1

06:00-14:45

2 stops24h 45m

Cork

Thu 5/2

06:00-21:05

2 stops23h 05m

€582

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Thu 29/1

16:45-16:45

2 stops16h 00m

Shannon

Mon 2/2

17:30-22:48

2 stops37h 18m

€584

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Thu 16/4

07:00-08:45

1 stop17h 45m

Dublin

Thu 30/4

08:55-22:09

2 stops21h 14m

€585

OntarioShannon

ONT - SNN

ONTSNN

Ontario

Tue 26/5

23:25-05:55

1 stop22h 30m

Shannon

Fri 5/6

14:40-22:09

1 stop15h 29m

€1,296

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 American 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

12h 50m

Direct flights

None
The fastest flight from Ontario to Ireland takes 12h 50m
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
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