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Cheap flights from Ontario to Dublin from €402

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 18/11. 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 Dublin

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
06:00 - 07:30ONT-DUB
17h 30m2 stops
United Airlines Logo
09:00 - 20:58DUB-ONT
43h 58m2 stops
€454United Airlines
Find Deal
Wed, 7 Jan - Wed, 14 Jan
Delta Logo
07:05 - 07:45ONT-DUB
16h 40m1 stop
Delta Logo
05:55 - 22:47DUB-ONT
24h 52m2 stops
€472Delta
Find Deal
Wed, 3 Dec - Thu, 11 Dec
United Airlines Logo
07:00 - 08:10ONT-DUB
18h 10m1 stop
United Airlines Logo
12:05 - 22:51DUB-ONT
18h 46m2 stops
€474United Airlines
Find Deal
Wed, 29 Oct - Thu, 6 Nov
KLM Logo
07:05 - 07:45ONT-DUB
16h 40m1 stop
KLM Logo
09:45 - 19:42DUB-ONT
17h 57m1 stop
€517KLM
Find Deal
Wed, 12 Nov - Mon, 17 Nov
Air Canada Logo
05:05 - 07:10ONT-DUB
18h 05m2 stops
Air Canada Logo
09:00 - 20:58DUB-ONT
19h 58m2 stops
€518Air Canada
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Tue, 30 Dec - Mon, 12 Jan
Iberia Logo
10:47 - 07:10ONT-DUB
12h 23m1 stop
Iberia Logo
12:55 - 23:57DUB-ONT
19h 02m1 stop
€560Iberia
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Sat, 15 Nov - Sat, 22 Nov
British Airways Logo
16:47 - 19:50ONT-DUB
19h 03m2 stops
British Airways Logo
20:40 - 18:18DUB-ONT
53h 38m2 stops
€590British Airways
Find Deal
Thu, 4 Dec - Tue, 23 Dec
Iberia Logo
07:03 - 07:10ONT-DUB
16h 07m1 stop
Iberia Logo
13:00 - 22:14DUB-ONT
17h 14m1 stop
€611Iberia
Find Deal
Thu, 4 Dec - Tue, 23 Dec
KLM Logo
13:00 - 12:35ONT-DUB
15h 35m2 stops
KLM Logo
11:00 - 18:15DUB-ONT
15h 15m1 stop
€628KLM
Find Deal
Wed, 15 Apr - Sat, 25 Apr
British Airways Logo
16:47 - 16:35ONT-DUB
15h 48m2 stops
British Airways Logo
12:05 - 22:29DUB-ONT
18h 24m2 stops
€677British Airways
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Wed, 5 Nov - Tue, 18 Nov

United Airlines flights from Ontario to Dublin

Our best United Airlines deals on Ontario to Dublin flight tickets
United Airlines
7 Jan
ONT06:00Ontario
17h 30m
2 stops
DUB07:30Dublin
14 Jan
DUB09:00Dublin
43h 58m
2 stops
ONT20:58Ontario
€454
Find similar
United Airlines
29 Oct
ONT07:00Ontario
18h 10m
1 stop
DUB08:10Dublin
6 Nov
DUB12:05Dublin
18h 46m
2 stops
ONT22:51Ontario
€474
Find similar
United Airlines
29 Oct
ONT07:00Ontario
18h 10m
1 stop
DUB08:10Dublin
6 Nov
DUB12:05Dublin
18h 46m
2 stops
ONT22:51Ontario
€475
Find similar

Delta flights from Ontario to Dublin

Our best Delta deals on Ontario to Dublin flight tickets
Delta
3 Dec
ONT07:05Ontario
16h 40m
1 stop
DUB07:45Dublin
11 Dec
DUB05:55Dublin
24h 52m
2 stops
ONT22:47Ontario
€472
Find similar
Delta
20 Oct
ONT11:36Ontario
13h 09m
1 stop
DUB08:45Dublin
5 Nov
DUB05:55Dublin
19h 15m
2 stops
ONT17:10Ontario
€473
Find similar
Delta
1 Dec
ONT22:25Ontario
25h 20m
2 stops
DUB07:45Dublin
8 Dec
DUB09:45Dublin
17h 54m
1 stop
ONT19:39Ontario
€521
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 October 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

06:00-07:30

2 stops17h 30m

Dublin

Wed 14/1

09:00-20:58

2 stops43h 58m

€454

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 3/12

07:05-07:45

1 stop16h 40m

Dublin

Thu 11/12

05:55-22:47

2 stops24h 52m

€472

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 29/10

07:00-08:10

1 stop18h 10m

Dublin

Thu 6/11

12:05-22:51

2 stops18h 46m

€474

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 12/11

07:05-07:45

1 stop16h 40m

Dublin

Mon 17/11

09:45-19:42

1 stop17h 57m

€517

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 30/12

05:05-07:10

2 stops18h 05m

Dublin

Mon 12/1

09:00-20:58

2 stops19h 58m

€518

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 15/11

10:47-07:10

1 stop12h 23m

Dublin

Sat 22/11

12:55-23:57

1 stop19h 02m

€560

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Thu 4/12

16:47-19:50

2 stops19h 03m

Dublin

Tue 23/12

20:40-18:18

2 stops53h 38m

€590

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Thu 4/12

07:03-07:10

1 stop16h 07m

Dublin

Tue 23/12

13:00-22:14

1 stop17h 14m

€611

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 15/4

13:00-12:35

2 stops15h 35m

Dublin

Sat 25/4

11:00-18:15

1 stop15h 15m

€628

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 5/11

16:47-16:35

2 stops15h 48m

Dublin

Tue 18/11

12:05-22:29

2 stops18h 24m

€677

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 month to fly to Dublin?

If you aren’t able to travel during the month of December, then book flights to Dublin from Ontario during March instead. Flights to Dublin in March, while not as cheap as those in December, still average around €521.

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 €424. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around €583. 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 at midday. Our users have found flights to Dublin at midday for as low as €353. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are €518 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

Direct flights

None
There are no direct flights from Ontario to Dublin. There are no popular flight routes from Ontario to Dublin.
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  • How far is Ontario to Dublin by plane?

    The distance between Ontario and Dublin is about 8266.8 km. Typically, this will take 12h 23m 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
Cavan
Swords
Dundalk
Tullamore
Enniscorthy
Kildare
Bray
Naas
Mullingar
Maynooth
Arklow
Leixlip
Carlingford
Drogheda
Malahide
Portmarnock
Castleknock

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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