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Cheap flights from Ontario to Dublin from €399

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 2/12. 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
23:59 - 08:10ONT-DUB
24h 11m1 stop
United Airlines Logo
09:00 - 22:53DUB-ONT
21h 53m2 stops
€476United Airlines
Find Deal
Sun, 28 Dec - Fri, 9 Jan
United Airlines Logo
23:59 - 08:10ONT-DUB
24h 11m1 stop
United Airlines Logo
09:30 - 21:58DUB-ONT
20h 28m2 stops
€484United Airlines
Find Deal
Sat, 27 Dec - Fri, 9 Jan
United Airlines Logo
18:41 - 08:10ONT-DUB
29h 29m2 stops
United Airlines Logo
10:40 - 22:25DUB-ONT
19h 45m1 stop
€501United Airlines
Find Deal
Sat, 6 Dec - Thu, 18 Dec
Iberia Logo
07:03 - 07:10ONT-DUB
16h 07m1 stop
Iberia Logo
12:55 - 22:15DUB-ONT
17h 20m1 stop
€518Iberia
Find Deal
Sun, 7 Dec - Sun, 14 Dec
United Airlines Logo
06:00 - 07:30ONT-DUB
17h 30m2 stops
United Airlines Logo
10:40 - 22:25DUB-ONT
19h 45m1 stop
€522United Airlines
Find Deal
Sun, 7 Dec - Mon, 22 Dec
United Airlines Logo
06:00 - 07:30ONT-DUB
17h 30m2 stops
United Airlines Logo
09:30 - 21:36DUB-ONT
20h 06m2 stops
€544United Airlines
Find Deal
Sun, 1 Mar - Sun, 8 Mar
United Airlines Logo
23:59 - 07:10ONT-DUB
23h 11m2 stops
United Airlines Logo
09:30 - 21:58DUB-ONT
20h 28m2 stops
€549United Airlines
Find Deal
Wed, 24 Dec - Fri, 9 Jan
United Airlines Logo
23:59 - 08:10ONT-DUB
24h 11m1 stop
United Airlines Logo
09:30 - 21:58DUB-ONT
20h 28m2 stops
€551United Airlines
Find Deal
Wed, 24 Dec - Fri, 9 Jan
Air Canada Logo
06:00 - 07:10ONT-DUB
17h 10m2 stops
Air Canada Logo
09:00 - 20:50DUB-ONT
19h 50m2 stops
€563Air Canada
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Fri, 20 Feb - Sat, 28 Feb
Iberia Logo
10:57 - 09:45ONT-DUB
14h 48m1 stop
Iberia Logo
12:40 - 23:40DUB-ONT
19h 00m1 stop
€565Iberia
Find Deal
Tue, 31 Mar - Tue, 7 Apr

United Airlines flights from Ontario to Dublin

Our best United Airlines deals on Ontario to Dublin flight tickets
United Airlines
17 Nov
ONT07:00Ontario
17h 10m
1 stop
DUB08:10Dublin
26 Nov
DUB09:00Dublin
21h 31m
2 stops
ONT22:31Ontario
€471
Find similar
United Airlines
19 Nov
ONT07:00Ontario
17h 10m
1 stop
DUB08:10Dublin
26 Nov
DUB12:05Dublin
18h 46m
2 stops
ONT22:51Ontario
€475
Find similar
United Airlines
28 Dec
ONT23:59Ontario
24h 11m
1 stop
DUB08:10Dublin
9 Jan
DUB09:00Dublin
21h 53m
2 stops
ONT22:53Ontario
€476
Find similar

Iberia flights from Ontario to Dublin

Our best Iberia deals on Ontario to Dublin flight tickets
Iberia
7 Dec
ONT07:03Ontario
16h 07m
1 stop
DUB07:10Dublin
14 Dec
DUB12:55Dublin
17h 20m
1 stop
ONT22:15Ontario
€518
Find similar
Iberia
31 Mar
ONT10:57Ontario
14h 48m
1 stop
DUB09:45Dublin
7 Apr
DUB12:40Dublin
19h 00m
1 stop
ONT23:40Ontario
€565
Find similar
Iberia
12 May
ONT12:55Ontario
12h 50m
1 stop
DUB09:45Dublin
29 May
DUB11:45Dublin
16h 17m
1 stop
ONT20:02Ontario
€634
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 16 November 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

Sun 28/12

23:59-08:10

1 stop24h 11m

Dublin

Fri 9/1

09:00-22:53

2 stops21h 53m

€476

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 27/12

23:59-08:10

1 stop24h 11m

Dublin

Fri 9/1

09:30-21:58

2 stops20h 28m

€484

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sat 6/12

18:41-08:10

2 stops29h 29m

Dublin

Thu 18/12

10:40-22:25

1 stop19h 45m

€501

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 7/12

07:03-07:10

1 stop16h 07m

Dublin

Sun 14/12

12:55-22:15

1 stop17h 20m

€518

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 7/12

06:00-07:30

2 stops17h 30m

Dublin

Mon 22/12

10:40-22:25

1 stop19h 45m

€522

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Sun 1/3

06:00-07:30

2 stops17h 30m

Dublin

Sun 8/3

09:30-21:36

2 stops20h 06m

€544

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 24/12

23:59-07:10

2 stops23h 11m

Dublin

Fri 9/1

09:30-21:58

2 stops20h 28m

€549

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Wed 24/12

23:59-08:10

1 stop24h 11m

Dublin

Fri 9/1

09:30-21:58

2 stops20h 28m

€551

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Fri 20/2

06:00-07:10

2 stops17h 10m

Dublin

Sat 28/2

09:00-20:50

2 stops19h 50m

€563

OntarioDublin

ONT - DUB

ONTDUB

Ontario

Tue 31/3

10:57-09:45

1 stop14h 48m

Dublin

Tue 7/4

12:40-23:40

1 stop19h 00m

€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 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 €529.

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 €425. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around €585. 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 €354. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are €520 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
Swords
Cavan
Dundalk
Tullamore
Enniscorthy
Kildare
Bray
Mullingar
Naas
Arklow
Carlingford
Maynooth
Leixlip
Drogheda
Gorey
Malahide
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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