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Cheap flights from Ontario to Dublin from €389

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 Dublin departing on 16/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from Ontario to Dublin

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
05:05 - 08:10
ONT
-
DUB
19h 05m2 stops
United Airlines Logo
09:00 - 21:58
DUB
-
ONT
44h 58m2 stops
€536United Airlines
Wed, 7 Jan - Wed, 14 Jan
Multiple Airlines Logo
05:00 - 07:10
ONT
-
DUB
18h 10m2 stops
Multiple Airlines Logo
09:00 - 12:43
DUB
-
ONT
35h 43m2 stops
€538Multiple Airlines
Tue, 17 Feb - Fri, 27 Feb
British Airways Logo
16:45 - 17:00
ONT
-
DUB
16h 15m2 stops
British Airways Logo
10:55 - 22:48
DUB
-
ONT
19h 53m2 stops
€542British Airways
Tue, 3 Feb - Tue, 10 Feb
British Airways Logo
17:06 - 17:00
ONT
-
DUB
15h 54m2 stops
British Airways Logo
19:45 - 20:18
DUB
-
ONT
32h 33m2 stops
€546British Airways
Tue, 3 Mar - Wed, 29 Apr
American Airlines Logo
15:19 - 15:40
ONT
-
DUB
16h 21m2 stops
American Airlines Logo
11:30 - 21:29
DUB
-
ONT
17h 59m2 stops
€552American Airlines
Tue, 17 Feb - Fri, 27 Feb
Air Canada Logo
05:15 - 06:10
ONT
-
DUB
17h 55m2 stops
Air Canada Logo
09:50 - 20:46
DUB
-
ONT
18h 56m2 stops
€556Air Canada
Tue, 24 Mar - Fri, 10 Apr
Air Canada Logo
05:00 - 07:10
ONT
-
DUB
18h 10m2 stops
Air Canada Logo
08:00 - 20:50
DUB
-
ONT
19h 50m2 stops
€557Air Canada
Tue, 3 Mar - Wed, 11 Mar
United Airlines Logo
07:00 - 07:20
ONT
-
DUB
16h 20m2 stops
United Airlines Logo
09:50 - 20:46
DUB
-
ONT
18h 56m2 stops
€559United Airlines
Tue, 14 Apr - Tue, 28 Apr
Iberia Logo
12:55 - 09:45
ONT
-
DUB
12h 50m1 stop
Iberia Logo
13:45 - 23:40
DUB
-
ONT
17h 55m1 stop
€560Iberia
Tue, 7 Apr - Thu, 16 Apr
KLM Logo
07:30 - 12:40
ONT
-
DUB
21h 10m2 stops
KLM Logo
09:45 - 21:05
DUB
-
ONT
19h 20m1 stop
€565KLM
Tue, 17 Feb - Fri, 27 Feb

United Airlines flights from Ontario to Dublin

Our best United Airlines deals on Ontario to Dublin flight tickets
United Airlines
7 Jan
ONT05:05Ontario
19h 05m
2 stops
DUB08:10Dublin
14 Jan
DUB09:00Dublin
44h 58m
2 stops
ONT21:58Ontario
€536
Find similar
United Airlines
14 Apr
ONT07:00Ontario
16h 20m
2 stops
DUB07:20Dublin
28 Apr
DUB09:50Dublin
18h 56m
2 stops
ONT20:46Ontario
€559
Find similar
United Airlines
13 Mar
ONT23:59Ontario
47h 11m
2 stops
DUB06:10Dublin
22 Mar
DUB08:00Dublin
35h 18m
2 stops
ONT12:18Ontario
€572
Find similar

Air Canada flights from Ontario to Dublin

Our best Air Canada deals on Ontario to Dublin flight tickets
Air Canada
24 Mar
ONT05:15Ontario
17h 55m
2 stops
DUB06:10Dublin
10 Apr
DUB09:50Dublin
18h 56m
2 stops
ONT20:46Ontario
€556
Find similar
Air Canada
3 Mar
ONT05:00Ontario
18h 10m
2 stops
DUB07:10Dublin
11 Mar
DUB08:00Dublin
19h 50m
2 stops
ONT20:50Ontario
€557
Find similar
Air Canada
5 Feb
ONT06:00Ontario
17h 10m
2 stops
DUB07:10Dublin
18 Feb
DUB09:00Dublin
40h 41m
2 stops
ONT17:41Ontario
€566
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Ontario to Dublin 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 18 December 2025.
Use the filters below to find and compare flights from Ontario to Dublin that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 7/1

05:05-08:10

2 stops19h 05m

Dublin

Wed 14/1

09:00-21:58

2 stops44h 58m

€536

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 17/2

05:00-07:10

2 stops18h 10m

Dublin

Fri 27/2

09:00-12:43

2 stops35h 43m

€538

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 3/2

16:45-17:00

2 stops16h 15m

Dublin

Tue 10/2

10:55-22:48

2 stops19h 53m

€542

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 3/3

17:06-17:00

2 stops15h 54m

Dublin

Wed 29/4

19:45-20:18

2 stops32h 33m

€546

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 17/2

15:19-15:40

2 stops16h 21m

Dublin

Fri 27/2

11:30-21:29

2 stops17h 59m

€552

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 24/3

05:15-06:10

2 stops17h 55m

Dublin

Fri 10/4

09:50-20:46

2 stops18h 56m

€556

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 3/3

05:00-07:10

2 stops18h 10m

Dublin

Wed 11/3

08:00-20:50

2 stops19h 50m

€557

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 14/4

07:00-07:20

2 stops16h 20m

Dublin

Tue 28/4

09:50-20:46

2 stops18h 56m

€559

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 7/4

12:55-09:45

1 stop12h 50m

Dublin

Thu 16/4

13:45-23:40

1 stop17h 55m

€560

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 17/2

07:30-12:40

2 stops21h 10m

Dublin

Fri 27/2

09:45-21:05

1 stop19h 20m

€565

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 Dublin from

How to get the cheapest flight ticket from Ontario to Dublin

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 day to depart on your flight to Dublin?

Our data shows that Friday is the least expensive day to fly to Dublin. Tickets to fly out on this day can be as low as €421. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around €579. These prices are subject to change though, so be sure to set up a Price Alert for flights to Dublin.

What is the cheapest time of day to depart on your flight to Dublin?

Our data shows that the cheapest Ontario to Dublin flights are usually those with departure times in the morning. Our users have found flights to Dublin in the morning for as low as €463. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are €515 on average. Flights to Dublin from Ontario in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

When to book flights from Ontario to Dublin

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Dublin according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Ontario to Dublin (ONT to DUB) flight deals and tips

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

Fastest flight time

12h 50m

Direct flights

None
The fastest flight from Ontario to Dublin takes 12h 50m
There are no direct flights from Ontario to Dublin. There are no popular flight routes from Ontario to Dublin.
Search flight deals

  • How far is Ontario to Dublin by plane?

    The distance between Ontario and Dublin is about 8266.8 km. Typically, this will take 12h 50m by plane in normal conditions.

  • When did momondo last update prices for flights from Ontario Airport to Dublin Airport?

    Prices for flights from Ontario Airport to Dublin Airport refresh daily.

  • How old do you have to be to fly from Ontario Airport to Dublin Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Dublin Airport.

  • What documentation or ID do you need to fly to Dublin Airport?

    The required travel and health documents for your Dublin Airport 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 Dublin Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near Dublin?

Book flights to Dublin if you plan to visit one of these locations
Kilkenny
Athlone
Wicklow
Swords
Cavan
Dundalk
Tullamore
Kildare
Naas
Enniscorthy
Bray
Mullingar
Carlingford
Arklow
Gorey
Malahide
Maynooth
Leixlip
Castleknock
Drogheda

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Dublin?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Dublin. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Dublin with flexible booking policies on momondo?

All flight searches from Ontario to Dublin on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Dublin?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Dublin.

I’m not ready to book a flight from Ontario to Dublin right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Dublin from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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